WO2019155605A1

WO2019155605A1 - Elevator work platform and elevator

Info

Publication number: WO2019155605A1
Application number: PCT/JP2018/004599
Authority: WO
Inventors: 浩史川上; 智貴仮屋; 麻里大菅; 章永尾
Original assignee: 株式会社日立製作所
Priority date: 2018-02-09
Filing date: 2018-02-09
Publication date: 2019-08-15
Also published as: JP6965371B2; JPWO2019155605A1; CN111655603A; CN111655603B

Abstract

An elevator work platform 10 comprises a connection member 11 that is detachably attached to the top surface 120a of an elevator car 120, and a work floor assembly 15 that is detachably supported on the connection member 11. The connection member 11 can be attached to the elevator car 120 when the raising and lowering motion of the elevator car 120 is restricted by the activation of a stop device 130.

Description

Elevator worktable and elevator

The present invention relates to an elevator work table installed on an upper part of a passenger car and an elevator equipped with the elevator work table.

Normally, maintenance equipment such as hoisting machines are installed at the top of the elevator hoistway. At the time of maintenance and inspection of the maintenance target device, the worker gets on the elevator work table provided on the upper part of the car. As such an elevator work table, for example, there is one described in Patent Document 1.

Patent Document 1 describes a technique including an inspection work floor installed on a car, a work driver that raises the inspection work floor, and a guide rail that guides the rise of the inspection work floor. .

JP2015-155340A

However, in the technique described in Patent Document 1, since the work table is permanently installed at the top of the car, the weight of the car is increased by the work table, and the weight of other equipment that can be attached to the car is increased. It had the problem of being reduced.

This purpose is to provide an elevator work table and an elevator that can be detachably installed in a car in a state of ensuring safety in consideration of the above problems.

In order to solve the above problems and achieve the object, an elevator work platform includes a connecting member that is detachably attached to an upper surface portion of an elevator car in a vertical direction, and a work floor assembly that is detachably supported by the connecting member. And a solid. The connecting member can be attached to the car when a stop device provided on the upper surface portion of the car is operated to restrict the raising / lowering movement of the car.

In addition, the elevator is provided on the upper and lower surfaces of the car for moving up and down in the hoistway provided in the building structure, and a stop device for restricting the car from moving up and down, And an elevator work table that is detachably installed on the upper surface. As the elevator work table, the elevator work table described above is used.

According to the elevator work table and the elevator having the above-described configuration, the elevator work table and the elevator can be detachably installed in the car while ensuring safety.

It is a schematic block diagram which shows the top part of the elevator concerning an embodiment. It is a top view which shows the hoistway of the elevator concerning the example of an embodiment. It is a perspective view which shows the workbench for elevators concerning the embodiment. It is a top view which shows the state which installed the work platform for elevators in the elevator car concerning the example of an embodiment. It is a side view which shows the workbench for elevators concerning the embodiment. It is a top view which shows the connection member of the work bench | platform for elevators concerning the example of an embodiment. It is a side view which shows the connection member of the work platform for elevators concerning the embodiment. It is a side view which shows the state which folded the work floor assembly of the work bench | platform for elevators concerning the example of an embodiment.

Hereinafter, embodiments of the elevator work table and the elevator will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the common member in each figure.

1. Embodiment 1-1. Configuration of Elevator First, the configuration of an elevator according to an embodiment (hereinafter referred to as “this example”) will be described with reference to FIGS. 1 and 2.
FIG. 1 is a schematic configuration diagram illustrating a configuration example of the elevator according to the present example. FIG. 2 is a plan view showing a hoistway of the elevator.

As shown in FIG. 1, the elevator 1 of this example is provided in a hoistway 110 formed in a building structure. The elevator 1 moves up and down in the hoistway 110 and includes a car 120 on which people and luggage are placed, a main rope (not shown), a counterweight, a hoisting machine, and the like. A maintenance target device 150 such as a hoisting machine is installed at the top of the hoistway 110.

One end of the main rope in the axial direction is connected to the upper portion of the car 120, and the other end of the main rope in the axial direction is connected to the upper portion of the counterweight. Therefore, the car 120 is connected to the counterweight via the main rope.

A car side guide rail 201 is erected along the hoistway 110 in the hoistway 110. A car 120 is slidably supported on the car-side guide rail 201 via a slider (not shown). When the hoisting machine is driven, the car 120 moves up and down in the hoistway 110 along the pair of car-side guide rails 201. The direction in which the car-side guide rail 201 extends, that is, the direction in which the car 120 moves up and down is defined as the vertical direction.

In addition, the car 120 moves to the vicinity of the top of the hoistway 110 during maintenance inspection of the maintenance target device 150.

FIG. 2 is a plan view showing an upper surface portion of the car.
As shown in FIG. 2, an upper beam 121 indicating an example of a support member and a stopping device 130 are provided on the upper surface portion 120 a of the car 120. The upper beam 121 is provided so as to extend in the horizontal direction perpendicular to the vertical direction on the upper surface portion 120 a of the car 120. A fixing hole 121b for fixing the work table 10 to be described later is provided on the upper surface of the upper beam 121 in the vertical direction.

In addition, car-side guide rails 201 are arranged on both sides of the upper beam 121 of the car 120 in the longitudinal direction. Furthermore, a maintenance target device 150 is installed in the hoistway 110 (see FIG. 1) on one end side in the longitudinal direction of the upper beam 121 in the car 120.

The stop device 130 is disposed at both ends of the upper beam 121 on the upper surface of the car 120. In FIG. 2, only the stopping device 130 arranged on the maintenance target device 150 side is shown.

The stopping device 130 mechanically and electrically regulates the up-and-down movement of the car 120 during maintenance inspection of the maintenance target device 150. The stop device 130 includes an accommodation member 131, a lock member 132, a guide member 133, and a switch 136.

The housing member 131 is fixed to the upper surface 121a of the car 120. The housing member 131 has a substantially U-shaped cross section cut in the vertical direction. The housing member 131 is formed with a housing recess 131a having an upper surface opened in the vertical direction. A lock member 132 is housed in the housing recess 131a. A guide member 133 is disposed at an end of the housing member 131 on the car side guide rail 201 side.

The guide member 133 has a substantially U-shaped cross-section cut in the horizontal direction. The guide member 133 includes a pair of

guide surface portions

134 and 134 that face each other in the horizontal direction, and a connection surface portion 135 that connects the pair of

guide surface portions

134 and 134. The pair of

guide surface portions

134 and 134 are opposed to each other with an interval in the longitudinal direction of the upper beam 121. A guide hole 134 a is formed in the guide surface portion 134. The lock member 132 is slidably inserted into the guide hole 134a.

The lock member 132 is formed of a rod-shaped member. The lock member 132 is slidably supported by the guide member 133. One end of the locking member 132 in the axial direction faces the car-side guide rail 201. The other end of the lock member 132 in the axial direction is housed in the housing member 131. The other end of the lock member 132 is connected to the switch 136.

The switch 136 is disposed at the end of the housing member 131 opposite to the upper beam 121. The switch 136 is electrically connected to a control unit (not shown) that controls the entire elevator 1 by wire or wirelessly.

The elevator work table (hereinafter simply referred to as “work table”) 10 is detachably attached to an upper portion in the vertical direction of the car 120 having the above-described configuration during maintenance inspection of the maintenance target device 150.

1-2. Next, a detailed configuration of the work table 10 will be described with reference to FIGS. 3 to 8. FIG.
3 is a perspective view showing the workbench 10, FIG. 4 is a plan view showing a state where the workbench 10 is installed on the car 120, and FIG. 5 is a side view showing the workbench 10.

3 to 5, the work table 10 includes a first connecting member 11, a second connecting member 12, a work floor assembly 15, and a fall prevention book 16. The first connecting member 11 is fixed to one end portion in the longitudinal direction of the upper beam 121, and the second connecting member 12 is fixed to an intermediate portion in the longitudinal direction of the upper beam 121. The first connecting member 11 and the second connecting member 12 are detachably fixed to the upper beam 121 via fixing bolts 61, respectively. The work floor assembly 15 is detachably fixed to the first connecting member 11 and the second connecting member 12 via support bolts 62.

FIG. 6 is a plan view showing the first connecting member 11, and FIG. 7 is a side view showing the first connecting member 11.
As shown in FIGS. 6 and 7, the first connecting member 11 includes a fixed surface portion 21, a support surface portion 22, a regulating plate 23, and a protective cover 24.

The fixed surface portion 21 is formed in a rectangular substantially flat plate shape. The fixing surface portion 21 is provided with a fastening hole 21a into which a fixing bolt 61 (see FIG. 5) is screwed. As shown in FIG. 5, the fixed surface portion 21 is placed on the upper surface portion 121 a of the upper beam 121 and is fastened and fixed to the upper beam 121 via the fixing bolt 61. At one end portion of the fixed surface portion 21, a support surface portion 22 is continuously formed substantially vertically.

The support surface portion 22 is bent substantially vertically from one end portion of the fixed surface portion 21 upward in the vertical direction. The support surface portion 22 is provided with a fastening portion 22a into which the support bolt 62 is screwed. As shown in FIG. 5, a support column 31 of a work floor assembly 15 described later is fastened and fixed to the support surface portion 22 via a support bolt 62. Further, a reinforcing surface portion 25 is provided at a corner portion between the fixed surface portion 21 and the support surface portion 22 so as to connect the fixed surface portion 21 and the support surface portion 22.

A regulating plate 23 is provided at the other end of the fixed surface 21 opposite to the one end where the support surface 22 is provided. The restriction plate 23 is bent substantially vertically from the end of the fixed surface 21 opposite to the end where the reinforcing surface 25 is provided, downward in the vertical direction. When the fixed surface portion 21 is placed on the upper beam 121 on the upper beam 121, the restriction plate 23 is inserted into the housing recess 131 a of the housing member 131.

Further, a protective cover 24 is attached to the other end portion of the fixed surface portion 21 by a fixing screw 28. The protective cover 24 protrudes from the other end portion of the fixed surface portion 21 with a predetermined length, and the distal end portion is bent downward in the vertical direction. When the fixed surface portion 21 is placed on the upper beam 121 on the upper beam 121, the protective cover 24 covers the upper portion of the switch 136 of the stop device 130 in the vertical direction.

Further, as shown in FIGS. 3 and 4, the second connecting member 12 has a fixed surface portion 21 and a support surface portion 22, similarly to the first connecting member 11. The second connecting member 12 has a configuration in which the restriction plate 23 and the protective cover 24 are removed from the first connecting member 11, and the other configurations are the same, and thus the description thereof is omitted.

Next, the work floor assembly 15 will be described.
FIG. 8 is a side view showing a state in which the work floor assembly 15 is folded.

As shown in FIGS. 3 to 5, the work floor assembly 15 has two

support columns

31, 31, a base portion 32, and a floor member. The two

support columns

31, 31 are fixed to the first connecting member 11 or the second connecting member 12 via support bolts 62. As shown in FIG. 5, the lower end portion of the support column 31 in the vertical direction is fastened and fixed to the side surface portion 121 c of the upper beam 121 via a fixing bolt 63.

Further, as shown in FIG. 3, the reinforcing member 52 is fixed so as to connect the two

support columns

31, 31. Further, as shown in FIG. 5, the support column 31 is formed with a locking portion 31 a. The locking portion 31 a is formed by cutting out the end opposite to the upper beam 121 at the lower end in the vertical direction of the support column 31.

A rotating shaft 36 is attached to the upper end of the support column 31 in the vertical direction. A base portion 32 is rotatably supported on the rotation shaft 36. Therefore, the two

support columns

31 and 31 and the base portion 32 are connected via the rotation shaft 36.

As shown in FIG. 8, the two

support columns

31, 31 and the base portion 32 overlap each other by rotating the two

support columns

31, 31 around the rotation shaft 36. Thereby, the work floor assembly 15 can be folded small, and the work work of the work floor assembly 15 can be performed easily. Furthermore, the space for storing the work floor assembly 15 can be reduced.

The base portion 32 is formed in a substantially flat plate shape. A plurality of openings 32 a are formed on one surface of the base portion 32. Thereby, weight reduction of the work floor assembly 15 can be achieved. A support body 37 is rotatably attached to a side surface portion of the base portion 32.

The support body 37 is formed by bending a rod-shaped member. A rotating pin 37 a is provided at one end of the support 37. The rotation pin 37a is rotatably supported on the side surface portion of the base portion 32. In addition, after the work floor assembly 15 is deployed, a locking piece 37 b is provided at the other end of the support 37 opposite to the one end. The locking piece 37b is detachably locked to the locking portion 31a. Therefore, the support body 37 is interposed between the base portion 32 and the support column 31.

Further, as shown in FIG. 3, a floor member 34 is placed on one surface of the base portion 32. The floor member 34 is formed in a rectangular flat plate shape. A skirting board 34 a is formed on the peripheral edge of the floor member 34. The skirting board 34a is bent substantially vertically from the peripheral edge of the floor member 34 upward in the vertical direction.

In this example, the example in which the baseboard 34a is provided on the floor member 34 has been described. However, the present invention is not limited to this. The floor member 34 may be configured as a separate member.

Furthermore, a reinforcing member 51 is fixed to the other surface of the base portion 32 opposite to the one surface on which the floor member 34 is provided. This reinforcing member 51 increases the strength of the base portion 32.

The fall prevention book 16 is detachably attached to the base portion 32. The fall prevention book 16 has four leg portions 41, a handrail 42, and a fixing member 43. The four leg portions 41 are fixed to the four corners of the base portion 32 via fixing members 43. A handrail 42 is attached to the upper end portion of the leg portion 41 in the vertical direction via a fixing screw 64. The handrail 42 is attached to three sides excluding one side of the hall 301 side (see FIG. 4) of the building structure where an operator enters and exits. The handrail 42 ensures the safety of the operator during maintenance inspection.

The configurations of the work floor assembly 15 and the fall prevention book 16 are not limited to the above-described examples, and other various configurations can be applied. For example, a chain, a rope, or the like may be used as the handrail 42 of the fall prevention booklet 16. Further, the base portion 32 and the floor member 34 of the work floor assembly 15 may be configured by a plurality of members, or the base portion 32 may be configured to be folded in two.

2. Next, an example of the installation work of the work table 10 having the above-described configuration will be described.
First, as shown in FIG. 1, the car 120 is raised to the vicinity of the maintenance target device 150. As a result, as shown in FIGS. 3 and 4, one end of the locking member 132 in the stopping device 130 faces the regulation hole 201 a provided in the car-side guide rail 201. Then, as the lock member 132 slides along the axial direction, one end of the lock member 132 is removably inserted into the restriction hole 201a. As a result, the raising / lowering movement of the car 120 can be mechanically restricted by the stop device 130.

Furthermore, when the lock member 132 slides and is inserted into the restriction hole 201a, the switch 136 outputs a stop signal to a control unit (not shown). Thereby, a control part stops the drive of a winding machine. As a result, the raising / lowering movement of the car 120 is electrically restricted by the stopping device 130. Thereby, it is possible to prevent the car 120 from moving up and down against the intention of the operator during maintenance and inspection, and to ensure safety during maintenance and inspection.

Next, the fixed surface portions 21 of the first connecting member 11 and the second connecting member 12 of the work table 10 are placed on the upper surface portion 121 a of the upper beam 121. At this time, the restriction plate 23 of the first connecting member 11 is inserted into the housing recess 131 a of the housing member 131. The restricting plate 23 faces the other end of the lock member 132. Next, the first connecting member 11 and the second connecting member 12 are fastened and fixed to the upper beam 121 by the fixing bolt 61. In this way, the work table 10 can be stably installed by fixing the first connecting member 11 and the second connecting member 12 to the upper beam 121 having relatively high strength in the car 120.

In addition, as shown in FIG. 2, when the lock member 132 of the stop device 130 is not inserted into the restriction hole 201a, the other end of the lock member 132 is accommodated in the accommodation recess 131a. For this reason, the restriction plate 23 of the first connecting member 11 and the lock member 132 interfere with each other, so that the first connecting member 11 cannot be fixed to the upper beam 121.

In other words, the first connecting member 11 cannot be fixed in a state where the stop device 130 is activated and safety is not ensured. As shown in FIGS. 3 and 4, the first connecting member 11 can be fixed and the worktable 10 can be installed only when the stop device 130 is activated and safety is ensured.

Further, when the first connecting member 11 is placed on the upper beam 121, the protective cover 24 covers the upper portion of the switch 136 of the stop device 130 in the vertical direction. Thus, the protective cover 24 can prevent the operator from stepping on the switch 136 by mistake during maintenance inspection, and the switch 136 can be prevented from being damaged.

Next, the work floor assembly 15 is expanded and the locking piece 37b of the support 37 is locked to the locking portion of the support column 31. Thereby, since the support body 37 is interposed between the base part 32 and the support pillar 31, it can prevent that the base part 32 rotates toward the support pillar 31 centering on the rotating shaft 36. FIG. As a result, it is possible to prevent the work floor assembly 15 from being folded against the operator's intention during maintenance and inspection, and to improve work safety.

Then, the two

support columns

31 and 31 are fastened and fixed to the first connecting member 11 and the second connecting member 12 by the support bolts 62. Further, as shown in FIG. 5, the lower end portion of the support column 31 is fastened and fixed to the side surface portion 121 c of the upper beam 121 via a fixing bolt 63.

In addition, you may perform the latching operation | work of the support body 37, after fixing the two

support pillars

31 and 31 to the 1st connection member 11, the 2nd connection member 12, and the upper beam 121. FIG.

Next, the floor member 34 is mounted on one surface of the base portion 32 and attached. Further, the four leg portions 41 of the fall prevention book 16 are erected at the four corners of the base portion 32. Then, the leg portion 41 is fixed to the base portion 32 by the fixing member 43. Next, the handrail 42 is attached to the upper end portion of the leg portion 41 using a fixing screw 64. Thereby, the installation work of the work table 10 is completed.

Further, since the restricting plate 23 faces the other end of the lock member 132, movement of the lock member 132 toward the other end in the axial direction is restricted. Therefore, in a state where the first connecting member 11 is placed on the upper beam 121, the lock member 132 cannot be extracted from the restriction hole 201a. In other words, the restricting plate 23 restricts the movement of the stopping device 130 in the direction to release the restriction of the lifting / lowering movement of the car 120. As a result, at the time of maintenance inspection, since the restriction of the lifting and lowering movement of the car 120 in the stopping device 130 is not released, the safety at the time of maintenance inspection can be improved.

Furthermore, the stopping device 130 cannot release the restriction of the elevator car 120 until the first connecting member 11 is removed from the upper beam 121 and the restricting plate 23 comes out of the housing recess 131a. Thus, since the stop device 130 is not released until the work table 10 is removed from the car 120, the work for removing the work table 10 can be performed safely.

As described above, the work platform 10 cannot install the car 120 until the stop device 130 is activated. As a result, since the work table 10 cannot be installed on the car 120 during normal operation other than during maintenance and inspection, the weight of the car 120 can be reduced.

The present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention described in the claims. In the embodiment described above, the example in which the restriction plate 23 and the protective cover 24 are provided only on the first connecting member 11 has been described. However, the present invention is not limited to this, and the restriction plate 23 is also provided on the second connecting member 12. Further, a protective cover 24 may be provided.

For example, when the maintenance target device 150 is installed in the hoistway 110 on the other end side in the longitudinal direction of the upper beam 121 in the car 120, the second connecting member 12 is connected to the other end portion in the longitudinal direction of the upper beam 121. Fixed to. Then, the restriction plate 23 provided on the second connecting member 12 is inserted into the accommodation recess of the stopping device disposed at the other end portion of the upper beam 121 in the longitudinal direction.

Also, it is not limited to this. The restriction hole 201a into which the lock member 132 is removably inserted is not limited to that provided in the car side guide rail 201. A restriction hole may be formed in a member different from the car-side guide rail 201 provided in the hoistway 110, for example, a rail bracket or a weight-side guide rail that slidably supports a counterweight.

In this specification, words such as “parallel” and “orthogonal” are used, but these do not mean only strict “parallel” and “orthogonal”, but include “parallel” and “orthogonal”. Further, it may be in a state of “substantially parallel” or “substantially orthogonal” within a range where the function can be exhibited.

DESCRIPTION OF SYMBOLS 1 ... Elevator, 10 ... Elevator workbench (workbench), 11 ... 1st connection member (connection member), 12 ... 2nd connection member, 15 ... Work floor assembly, 16 ... Fall prevention book, 21 ... Fixed surface part 21a ... fastening hole, 22 ... support surface part, 22a ... fastening part, 23 ... restricting plate, 24 ... protective cover, 31 ... support pillar, 31a ... locking part, 32 ... base part, 32a ... opening, 34 ... floor Member, 36 ... rotating shaft, 37 ... support, 37a ... rotating pin, 37b ... locking piece, 41 ... leg, 42 ... handrail, 43 ... fixed member, 110 ... hoistway, 120 ... car, 120a ... upper surface portion, 121 ... upper beam (support member), 121a ... upper surface portion, 121b ... fixing hole, 121c ... side surface portion, 130 ... stop device, 131 ... housing member, 131a ... Description recess 132 ... lock member, 133 ... guide member, 134a ... guide hole, 136 ... switch, 150 ... maintenance target apparatus, 201 ... cage-side guide rails, 201a ... restriction hole

Claims

A connecting member that is detachably attached to the upper surface of the elevator car in the vertical direction;
A work floor assembly that is detachably supported by the connecting member,
The connecting member is
An elevator work table that can be attached to the car when a stop device provided on the upper surface of the car is activated to restrict the car from moving up and down.
The connecting member is
When the stop device restricts the lifting and lowering movement of the car, it can be inserted into the stopping device, and when the stopping device releases the restriction of the raising and lowering movement of the car, it has a restriction plate that interferes with the stopping device. The elevator work table according to claim 1.
The elevator work platform according to claim 2, wherein when the restriction plate is inserted into the stop device, the operation plate is restricted from moving in a direction in which the restriction of lifting / lowering movement of the car in the stop device is released.
The stop device is provided with a switch that electrically regulates the up-and-down movement of the car,
The elevator work platform according to claim 1, wherein the connecting member has a protective cover that covers the switch.
The elevator work platform according to claim 1, wherein the connecting member is detachably attached to a support member installed on an upper surface portion of the car.
The work floor assembly is
A support column supported by the connecting member;
A base portion rotatably connected to the support pillar via a rotation shaft;
The elevator work platform according to claim 1, further comprising a work floor placed on the base portion.
The stop device is provided with a lock member that mechanically regulates the vertical movement of the car and a switch that electrically regulates the vertical movement of the car,
The connecting member is
A restriction plate that is inserted into the stop device when the lock member restricts the lifting movement of the car and that interferes with the locking member when the locking member releases the lifting movement restriction;
A protective cover covering the switch,
The regulation plate is
When inserted into the stop device, restricting the movement of the lock member in the direction to release the restriction of the elevator movement,
The work floor assembly is
A support column supported by the connecting member;
A base portion rotatably connected to the support pillar via a rotation shaft;
A work floor placed on the base part,
The elevator work platform according to claim 1, further comprising a fall prevention book that is detachably installed on the work floor assembly.
A car that moves up and down in a hoistway provided in a building structure,
A stop device provided on an upper surface portion in the vertical direction of the car and restricting the raising and lowering movement of the car;
An elevator worktable detachably installed on the upper surface of the car,
The elevator work table is:
A connecting member detachably attached to the upper surface of the car;
A work floor assembly that is detachably supported by the connecting member,
The connecting member is
An elevator which can be attached to the car when the stop device is activated to restrict the car from moving up and down.
The stopping device is
A lock member that is removably inserted into a restriction hole provided in the hoistway, and restricts the lifting and lowering movement of the car;
A support member that is slidably supported by the lock member, and that is open at the top in the vertical direction;
A switch that outputs a stop signal to a control unit that controls the up-and-down movement of the car when the lock member is inserted into the restriction hole;
The connecting member is
A restriction plate that can be inserted into the housing member when the lock member is inserted into the restriction hole, and that interferes with the lock member when the lock member is not inserted into the restriction hole;
The elevator according to claim 8, further comprising a protective cover that covers the switch.