JP2011190076A - Safety belt hook device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety belt hook device for an elevator, for allowing a worker to more safely move from an elevator hall to the upper part of a passenger car by installing a safety belt hook on a jamb. <P>SOLUTION: The safety belt hook device 20 for the elevator is arranged inside the jamb 3 constituting an elevator hall doorway for the safety belt of the worker to be mounted thereto. It includes the safety belt hook 23 for the safety belt to be mounted thereto, and a hinge 24 for setting the safety belt hook 30 to be stored in the jamb 3 when the elevator normally travels, and for setting the safety belt hook 30 to be protruded into an elevator shaft 32 when the elevator shaft 32 is inspected inside. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a safety belt hook device for an elevator, and more particularly, to a safety belt hook device for an elevator having a safety belt hook for an operator to put a safety belt on when checking the elevator.

  As shown in FIG. 9, the entrance of the elevator 100 is configured by a three-way frame 104. When an operator moves from the landing 101 to the hoistway in order to check the articles in the hoistway of the elevator 100, the elevator door 102 of the elevator is opened from the landing 101 side, and the car in the hoistway is opened. You may get on top of. At this time, the worker attaches one end of the safety belt to the body, and attaches the other end of the safety belt to the safety belt hook installed on the upper portion of the car.

  In addition, as a technology related to elevator maintenance and inspection, it is disclosed that when a worker performs maintenance and inspection work on an elevator, a seat inspection fence is attached to a three-way frame constituting an elevator entrance and exit (Patent Literature). 1).

JP 2002-187777 A

  However, as the heights of buildings and the diversification of customer needs have led to larger elevators and higher speeds of operation, additional equipment is installed in the hoistway to provide wind-conditioning capsules and upper parts of the car. As a result, there is no sufficient space on the car. For this reason, when the worker moves from the landing to the upper portion of the car, it is difficult to secure a space for providing a safety belt hook for placing a safety belt near the worker.

  Therefore, when an operator moves from the landing to the upper part of the car, the safety belt hook may be installed at an inconvenient position, and the position where the safety belt hook is attached is often farther than the landing. Thus, the worker may not be able to move safely from the landing to the top of the car.

  The present invention has been made in view of the above, and an object of the present invention is to provide an elevator that allows an operator to move more safely from a landing to an upper part of a car by installing a safety belt hook in a three-way frame. It is to provide a safety belt hook device.

  An elevator safety belt hook device according to the present invention is an elevator safety belt hook device that is disposed inside a three-way frame that constitutes an entrance for an elevator landing, and for mounting a safety belt for an operator, A safety belt hook for mounting a safety belt, and when the elevator normally travels, the safety belt hook is stored in the three-way frame, and when the inspection in the elevator hoistway is performed, the safety belt hook is And a hinge protruding from the hoistway.

  According to the present invention, by installing the safety belt hook in the three-way frame, the worker can move more safely from the landing to the upper part of the car.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows the elevator 1 provided with Embodiment 1 of the safety belt hook apparatus of the elevator of this invention. It is the side view which shows the structural example which looked at the elevator shown in FIG. 1 from the arrow B direction. It is a perspective view which shows the structural example of the safety belt hook apparatus of FIG. It is a figure which shows the usage example of the safety belt hook apparatus of FIG. It is a figure which shows Embodiment 2 of the safety belt hook apparatus of the elevator of this invention. It is the side view which looked at Embodiment 2 of the present invention from the D direction. It is a side view which shows Embodiment 3 of the safety belt hook apparatus of the elevator of this invention. It is a figure which shows Embodiment 4 of the safety belt hook apparatus of the elevator of this invention. It is a figure which shows the three-way frame of the conventional elevator.

  Embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a front view showing an elevator 1 including a first embodiment of an elevator safety belt hook device according to the present invention.

  The entrance / exit 2 of the elevator 1 shown in FIG. 1 is comprised by the three-way frame 3, and the entrance / exit 2 can be opened by moving the landing doors 5 and 5 in the direction away from each other in the R1 and R2 directions. The three-way frame 3 includes vertical frames 7 and 8 and a horizontal frame 9. A hall indicator box (HIB) 11 is provided on the wall surface 12 of the platform 10 above the platform 10.

  FIG. 2 shows an example of the structure of the elevator 1 shown in FIG. 1 as viewed from the direction of arrow B. FIG. 2A shows a safety belt when the operator normally uses the elevator without using the safety belt hook 23. The state of the hook device 20 is shown, and FIG. 2B shows the state of the safety belt hook device 20 when the operator performs an inspection work using the safety belt hook 23.

  3 shows a structural example of the safety belt hook device 20, FIG. 3 (A) shows a case where the elevator is normally used, and FIG. 3 (B) shows a case where the elevator is stopped. The state where the safety belt hook device 20 is used is shown.

  FIG. 4 shows an example of use of the safety belt hook device 20, and FIG. 4 (A) shows a state where the elevator is normally used and the landing door 5 is in a closed state. (B) is a case where the elevator is normally used, and shows a state where the landing door 5 is opened in the R1 direction. And FIG.4 (C) is a case where operation | movement of an elevator is stopped, Comprising: The state where the door is further opened rather than the state at the time of the door opening of the landing door 5 shown in FIG.4 (B) is shown. Yes.

  As shown in FIG. 2A, an opening 13 is formed in the vertical frame 8 of the three-way frame 3, and a safety belt hook device 20 is rotatably supported by the opening 13.

  As shown in FIG. 3, the safety belt hook device 20 includes a plate-shaped three-way frame portion 21, a plate member 22, a safety belt hook 23, and a hinge 24. The three-way frame portion 21 and the plate member 22 are arranged in a straight line, and the safety belt hook 23 is provided so as to protrude perpendicular to the three-way frame portion 21 and the plate member 22.

  As shown in FIG. 3, for example, a circular opening 25 is formed in the safety hook 23. The rotation axis L of the hinge 24 is parallel to the horizontal direction X. The horizontal direction X is orthogonal to the vertical direction Z in which the car moves up and down. The rotation axis L of the hinge 24 is supported so as to be rotatable with respect to the vertical frame 8 of the three-way frame.

  As shown in FIG. 3A, when the safety belt hook 23 is not used, the safety belt hook 23 of the safety belt hook device 20 protrudes in the Y1 direction. Then, as shown in FIG. 3B, the safety hook device 20 rotates 180 degrees in the M direction around the rotation axis L, so that the safety belt hook 23 of the safety belt hook device 20 is in the Y1 direction. It can project in the Y2 direction which is the opposite direction. In the use state of the safety belt hook 23 shown in FIGS. 2B and 3B, the safety belt hook 23 can be projected horizontally in the Y2 direction on the hoistway side. Therefore, the operator can detachably attach the mounting portion 31 of the safety belt 30 to the opening 25 of the safety belt hook 23.

  When the operator finishes the inspection work and removes the mounting portion 31 of the safety belt 30 shown in FIG. 3B from the opening 25 of the safety belt hook 23, the safety belt hook 23 is rotated by the rotation axis L of the hinge 24. As shown in FIGS. 3 (B) to 3 (A), the safety belt hook 23 shown in FIG. 3 (B) is used from the use state shown in FIG. 3 (B) by rotating 180 degrees in the N direction. The safety band hook 23 shown can be returned to the retracted state.

  Next, an operation example of the first embodiment of the present invention described above will be described.

  In FIG. 1, when the elevator 1 operates normally and the car of the elevator 1 moves in the Z direction, the safety belt hook 23 of the safety belt hook device 20 is as shown in FIG. The vertical frame 8 and the horizontal frame 9 of the three-way frame 3 are stored in the space formed. The state in which the safety belt hook 23 is stored in the space formed by the vertical frame 8 and the horizontal frame 9 of the three-way frame 3 is shown in FIG. 4 (A), and the landing door 5 remains closed. The band hook 23 does not protrude toward the hoistway 332 and is stored in the three-way frame 3.

  Therefore, when the operator moves from the landing 10 into the hoistway 32 in order to inspect the articles and the like in the hoistway 32 shown in FIG. 4 (A), FIG. 4 (A) to FIG. 4 (B). Then, as shown in FIG. 4C, the landing door 5 is opened in the R1 direction and is further retracted from the vertical frame 8 of the three-way frame 3 to the R1 direction side. Accordingly, as shown in FIGS. 4 (A) to 4 (B) and 4 (C), the safety hook 23 of the safety belt hook device 20 does not hit the moving landing door 5, and the landing door 5 can be safely and smoothly evacuated. For this reason, it is possible to prevent the design of the landing door 5 from being damaged.

  After the landing door 5 is opened in this way, when the operator gets into the upper part of the car in the hoistway 32 from the landing 10 and performs the inspection work, the worker changes from FIG. 2 (A) to FIG. As shown in (B), the safety belt hook device 20 is rotated 180 degrees in the M direction. Thereby, the direction of the safety belt hook 23 can be changed from the three-way frame 3 side to the hoistway 32 side. Then, as shown in FIG. 3B, the worker attaches one mounting portion 31 of the safety belt 30 to the opening 25 of the safety belt hook 23 in a detachable manner. The other attachment portion (not shown) of the safety belt 30 is attached to the worker's safety belt.

  By the way, as shown in FIG. 4 (C), when the operator is inspecting in the hoistway 32, the safety belt hook 23 is on the hoistway 32 side to the position where the end surface 5T of the landing door 5 hits. Therefore, it is possible to reliably prevent the landing door 5 from returning to the R2 direction. Thereby, the worker can perform the inspection work safely and can reliably prevent the landing door 5 from returning to the R2 direction by mistake when the worker goes back and forth between the landing 10 and the hoistway 32. . Since the safety belt hook 23 serves as a stopper for stopping the movement of the landing door 5 even if the landing door 5 is moved, the landing door 5 is not accidentally closed. The car does not normally run in the state.

  Then, when the worker finishes the inspection work of the article or the like in the hoistway 32, the worker rotates the safety belt hook 23 of the safety belt hook device 20 by 180 degrees in the N direction around the rotation axis L of the hinge 24. Thus, the safety belt hook 23 can be returned from the use state of the safety hook 23 shown in FIG. 3B to the storage state of the safety hook 23 shown in FIG. As a result, the safety belt hook 23 can be returned from the end face of the landing door 5 to the vertical frame 8 side of the three-way frame 3, so that the landing door 5 is not obstructed by the safety belt hook 23. 4A, the landing door 5 can be returned from the inspection door open state to the normal door open state and the normal door close state.

  As described above, in Embodiment 1 of the present invention, by installing the safety belt hook in the three-way frame, the worker can move more safely from the landing to the upper part of the car. Therefore, the operator can perform the inspection work easily and safely using the safety belt hook device 20.

  Next, another embodiment of the present invention will be described. When elements of another embodiment of the present invention are substantially the same as those of the first embodiment of the present invention described above, the same reference numerals are used. The explanation is used.

(Embodiment 2)
FIG. 5 is a diagram showing a second embodiment of the elevator safety belt hook device according to the present invention. FIG. 6 is a side view of the second embodiment of the elevator safety belt hook device according to the present invention as viewed from the D direction. FIG. FIG. 6B shows a state of the safety belt hook device 50 when the worker performs an inspection work using the safety belt hook 55.

  FIG. 5 and FIG. 6 (A) show a state where the operator does not use the safety belt hook and the elevator is normally used. The vertical frame 8 of the three-way frame 3 has a rectangular opening 40. Yes. A magnet catch 42 is fixed to the outer surface of the vertical frame 8 by using an L-shaped fixing member 41, and the magnet catch 42 is positioned above the opening 40. The magnet catch 42 is an example of a holding means for magnetically attracting and fixing the plate 54.

  As shown in FIG. 6A, the safety belt hook device 50 includes a fixing member 51, a hinge 52, a bending member 53, a plate 54, and a safety belt hook 55. The fixing member 51 is fixed to the vertical frame 8, and one end 53B of the bending member 53 is connected to the fixing member 51 via a hinge 52 so as to be rotatable in the M direction about the rotation axis L1. The plate 54 is a rectangular member that can close the opening 40 and is, for example, an iron plate that is a magnetically attractable material. The other end portion 53 </ b> C of the bending member 53 is fixed to the plate 54. The safety belt hook 55 is fixed perpendicularly to one surface of the plate 54, and the safety hook 55 is formed with a circular opening 56, for example.

  Furthermore, a stopper detection switch 60 is arranged. As shown in FIG. 6A, in the state where the plate 54 closes the opening 40, the detection member 61 of the stopper detection switch 60 abuts against the other end 53C of the bending member 53. When the detection member 61 of the stopper detection switch 60 abuts against the other end portion 53C of the bending member 53, the stopper detection switch 60 does not have the safety belt hook 55 on the hoistway 32 side, and the plate 54 closes the opening 40. The elevator control unit 57 is notified that the vehicle is in a state of being in the state.

  Next, an operation example of the above-described second embodiment of the present invention will be described.

  As shown in FIG. 6 (A), when the landing door is in the closed state and the operator does not use the safety belt hook and the elevator is normally used, the magnet catch 42 attracts the plate 54 magnetically. The plate 54 closes the opening 40. The magnet catch 42 magnetically attracts the plate 54 to prevent the plate 54 of the safety belt hook device 50 from inadvertently rotating in the M direction. In this state, the safety belt hook 55 does not protrude toward the hoistway 32 side.

  On the other hand, when the operator performs inspection work using the safety belt hook, the operator pushes the landing door out of the three-way frame, and the operator lifts the plate 54 against the magnetic attractive force of the magnet catch 42. By pushing to the 32 side, as shown in FIGS. 6 (A) to 6 (B), the plate 54 can be pulled out by rotating 90 degrees in the M direction to the hoistway 32 side around the rotation axis L1. Thereby, since the plate 54 is held in a state where it is horizontally stationary in the hoistway 32, the safety belt hook 55 protrudes upward in the Z2 direction. In addition, the detection member 61 of the stopper detection switch 60 is separated from the other end portion 53 </ b> C of the bending member 53. The operator can hang a safety belt (not shown) on the safety belt hook 55.

  Next, when the inspection work in the hoistway is completed, the operator rotates the plate 54 back by 90 degrees in the N direction, and the plate 54 is magnetically attracted and fixed by the magnet catch 42. After the operator confirms that the plate 54 is fixed in this manner, the landing door is returned from the retracted position to the original position. In this case, the safety belt hook 55 is positioned not on the hoistway 32 but on the outer side of the hoistway 32 by the detection member 61 of the stopper detection switch 60 abutting against the other end 53C of the bending member 53. Can be notified to the elevator control unit 57. As a result, the elevator control unit 58 can confirm that the safety belt hook 55 has returned to the state shown in FIG. 6A, so that the elevator car can be operated after confirming safety.

  As described above, in Embodiment 2 of the present invention, by installing the safety belt hook in the three-way frame, the worker can move more safely from the landing to the upper part of the car. Therefore, the inspection work can be performed easily and safely. Further, as shown in FIG. 6 (B), the plate 54 can be horizontally projected and held in the hoistway 32. Therefore, even if this plate 54 tries to move the landing door in the direction perpendicular to the paper surface of FIG. Since it acts as a stopper for stopping the movement of the landing door, the landing door will not be carelessly closed, so that the car will not normally travel in this state by mistake.

  Further, the stopper detection switch 60 is preferably provided at a place where the safety belt hook 55 is accommodated, so that the car can run only when the detection member 61 of the stopper detection switch 60 is pushed by the plate 54. Can be possible. In other words, if the detection member 61 of the stopper detection switch 60 is not pushed by the plate 54, the elevator control unit 57 determines that the landing door is open, so that the car does not run in the hoistway 32. Safety measures can be taken.

  In Embodiment 2 of the present invention, it has a plate 54 for fixing the safety belt hook 55, the plate 54 is supported rotatably with respect to the three-way frame 3 via a hinge 52, and the magnet catch 42, which is a holding means, With the safety belt hook 55 stored in the three-way frame 3, the movement of the safety belt hook 55 and the plate 54 can be restricted and magnetically attracted and held. Thereby, although it is a simple structure, the safety belt hook 55 and the plate 54 can be stored in the three-way frame 3, and do not protrude to the hoistway 32 side carelessly. Accordingly, since the safety belt hook 55 and the plate 54 can be securely held by the magnet catch 42, the safety belt hook 55 and the plate 54 do not damage the appearance design of the landing door even when the landing door is opened and closed during normal use. can do.

  The plate 54 is rotatably supported with respect to the three-way frame 3 via the hinge 52, and the stopper detection switch 60 as a detection unit detects that the safety belt hook 55 is stored in the three-way frame 3. And the elevator control part 57 as a control part is driving | running | working of the elevator car, when the stopper detection switch 60 as a detection part does not detect that the safety belt hook 55 is stored in the three-way frame 3. I will not let you. Accordingly, the elevator car can be prevented from operating during the inspection work, and the safety of the inspection work can be ensured.

(Embodiment 3)
FIG. 7 shows a third embodiment of the elevator safety belt hook device of the present invention, and FIG. 7 (A) shows a state where the operator does not use the safety belt hook 55 and the elevator is normally used. B) shows a state of the safety belt hook device 50 when the worker performs an inspection work using the safety belt hook 55.

  The elevator embodiment 3 of the present invention shown in FIG. 7 has substantially the same structure as the elevator embodiment 2 of the present invention shown in FIG. 6, but the elevator embodiment 3 of the present invention shown in FIG. The following points are different from the elevator according to the second embodiment of the present invention shown in FIG.

  In FIG. 6, the magnet catch 42 and the stopper detection switch 60 are used. In FIG. 7, instead of the magnet catch 42 and the stopper detection switch 60, a magnet catch 82 with electrical contacts is used. For this reason, Embodiment 3 of the present invention can reduce the number of parts compared to Embodiment 2 of the present invention.

  The magnet catch 82 is an example of a holding means for magnetically attracting and holding the plate 54, but the magnetic contact 82 is magnetically attracted so that the electrical contact 83 is pushed and turned on. Notifies the elevator controller 57 that the safety belt hook 55 is located outside the hoistway 32 instead of the hoistway 32 side.

  The electrical contact 83 is provided on the magnet catch 42 that is a holding means. The electrical contact 83 electrically detects that the safety belt hook 55 is stored in the three-way frame when the plate 54 comes into contact. And the elevator control part 57 as a control part does not make the elevator car run, when the electrical contact 83 does not detect that the safety belt hook 55 is stored in the three-way frame 3.

  As a result, the elevator control unit 58 can confirm that the safety belt hook 55 has returned to the state shown in FIG. 7A, so that the elevator can be operated after confirming safety.

(Embodiment 4)
FIG. 8 shows Embodiment 4 of the elevator safety belt hook device of the present invention.

  In Embodiment 4 of the present invention shown in FIG. 8, the bending member 53 of the safety belt hook device 50 is connected to a rod 90 </ b> R of an electromagnetic actuator 90 as driving means, for example. A switch 91 for automatically rotating the safety belt hook device 50 to the hoistway 32 is disposed in the indicator box 11 at the landing.

  Thus, when the operator opens the lid 92 of the indicator box 11 and presses the switch 91, the elevator control unit 57 drives the electromagnetic actuator 90 so that the safety belt hook 55 of the safety belt hook device 50 is moved along the M direction. Then, it can be moved 90 degrees into the hoistway 32. Then, when the operator presses the switch 91 again, the safety band hook 55 can be returned to the storage location along the N direction to close the opening 40. In this way, the operator can automatically move and retract the safety belt hook 55 at the landing 10 only by turning the switch 91 of the indicator box 11 on and off, and the inspection work using the safety belt hook 55 can be performed. Can be done more safely.

  The fourth embodiment of the present invention shown in FIG. 8 can be applied to the first to third embodiments of the present invention described above.

  The present invention is not limited to the above embodiment. For example, although the shape of the safety belt hook is a substantially rectangular plate member and has a circular opening, the shape of the safety belt hook and the shape of the opening can be arbitrarily selected.

  Furthermore, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments of the present invention. For example, you may delete some components from all the components shown by embodiment of this invention. Furthermore, you may combine the component covering different embodiment suitably.

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 2 ... Entrance / exit, 3 ... Three-way frame, 5 ... landing door, 10 ... landing, 20 ... safety belt hook apparatus, 23 ... safety belt hook, 24 ... hinge, 30 ... safety belt, 32 ... hoistway, 42 ... magnet catch (an example of a holding means) 50 ... safety belt hook device, 54 ... plate, 55 ... -Safety belt hook, 60 ... Stopper detection switch (an example of a detection unit), 83 ... Electrical contact

Claims (5)

An elevator safety belt hook device that is disposed inside a three-way frame that forms an entrance of an elevator landing, and that is equipped with an operator safety belt,
A safety belt hook for attaching the safety belt;
When the elevator normally travels, the safety belt hook is stored in the three-way frame, and when checking the elevator hoistway, the safety belt hook protrudes into the hoistway, and a hinge,
An elevator safety belt hook device comprising: Having a plate for fixing the safety belt hook, the plate is rotatably supported with respect to the three-way frame via the hinge;
2. The elevator according to claim 1, further comprising holding means for restricting movement of the safety belt hook and the plate in a state in which the safety belt hook is stored in the three-way frame so as to be magnetically attracted and held. Safety belt hook device. Having a plate for fixing the safety belt hook, the plate is rotatably supported with respect to the three-way frame via the hinge;
A detection unit for detecting that the safety belt hook is stored in the three-way frame;
A control unit that does not allow the elevator car to travel when the detection unit does not detect that the safety belt hook is stored in the three-way frame;
The elevator safety belt hook device according to claim 2, wherein the elevator safety belt hook device is provided. An electrical contact that is provided on the holding means and electrically detects that the safety plate hook is stored in the three-way frame by contacting the plate;
A control unit that does not allow the elevator car to travel when the electrical contact does not detect that the safety belt hook is in a state of being housed in the three-way frame;
The elevator safety belt hook device according to claim 2, wherein the elevator safety belt hook device is provided. An actuator for storing the safety belt hook from the hoistway in the three-way frame;
A switch provided at the landing for operating the actuator;
The elevator safety belt hook device according to any one of claims 1 to 4, characterized by comprising:

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