JP6739173B2 - Door chain refueling support device and refueling support method - Google Patents

Description

The present invention relates to a refueling support device and a refueling support method for a door chain used for opening and closing an elevator door.

A chain as a power transmission mechanism is a combination of outer links and inner links that are alternately combined. The outer links combine two outer plates and two pins by press fitting, and the inner link has two inner links. The plate and the two bushes are press-fitted and joined like a pin. Therefore, when the chain moves, the bushes and the pins come into contact with each other, which requires lubrication for lubrication. As a power transmission mechanism, a chain used for an endless track such as an escalator or a passenger conveyor is well known, but it is also used for opening and closing an elevator door.

For example, Patent Document 1 discloses, as an elevator door device, an endless door interlocking rope that rotates a transmission pulley from a motor output shaft via a belt and is suspended between the transmission pulley and a door driven pulley. The configuration is described in which the car door is connected to the connected connecting member.

Patent Document 2 discloses an example of a conventional chain lubrication device in which a lubrication pump is operated by a pump drive lever that is mechanically oscillated by contacting a bush or link plate of a chain to lubricate a chain from a lubrication nozzle. Says.

In Patent Document 3, as a conventional technology of an oil supply device for a passenger conveyor, lubricating oil is injected from a nozzle connected to a tip end of an oil supply pipe through which lubricating oil passes, and oil is applied to an endless step chain that circulates and moves. An example is given. Further, in the configuration of the conventional technique, it has been pointed out that when a maintenance worker or the like collides with the nozzle, it becomes difficult for the lubricating oil to be properly applied to the chain and applied.

Therefore, as a device that allows the maintenance worker to correctly direct oil to the chain even if it collides, an elastic contact body such as felt is attached to the outflow body where the lubricating oil flows out by connecting to the oil supply pipe. Discloses a configuration in which the oil is contacted with the chain and the lubricating oil is applied to the chain via the contact body.

JP, 2015-3824, A JP, 9-156747, A JP, 2009-161286, A

Since the escalator moves at a substantially constant speed, and its operation time is often all day long, refueling of the chain is indispensable, and a fixed refueling device is installed on the back side of a step called a truss of the escalator. Therefore, the dripping and spilling of the oil due to the refueling does not occur to the passenger.

On the other hand, when opening and closing the door of the elevator, the speed is not constant due to acceleration and deceleration, but the opening and closing frequency is significantly lower than the operating time of the escalator. Therefore, refueling of the chain is performed manually, for example, at the time of maintenance and inspection about once a year. Since the door chain used for opening and closing the door is provided on the upper portion of the door, oil dripping when manually refueling may cause complaints of passengers passing through the door. As described above, the refueling of the elevator cannot use the refueling device generally used in the escalator as it is, but it takes a considerable time to manually feed the oil over the entire length of the chain. You must keep paying attention. Therefore, there is a demand for a refueling support device for a door chain that can refuel over the entire length of the chain in a short time without worrying about oil dripping.

A refueling assistance device for a door chain according to the present invention is a refueling assistance device for assisting refueling of a door chain used in an elevator door opening/closing device , and includes two sandwiching parts facing each other and a fulcrum on opposite sides. is provided with two operating handle section facing each other and pliers capable of adjusting the opening and closing of the two pinching portions facing the opposite side each other physicians fulcrum by grasping in one hand the two operating shank facing the each other physician The two sandwiching parts are composed of a sandwiching part on one side and a sandwiching part on the other side facing each other for sandwiching the door chain, and for opening and closing the sandwiching part on one side and the sandwiching part on the other side . a biasing means for applying a biasing force, and one side of the pad while being pre penetrate the oil is fitted opposite the nip of the other side in the nip of the one side, while at the nip of the other side in The pad on the other side that is fitted to face the pad on the other side and is not impregnated with oil.

According to the refueling support device having the above structure, the chain can be sandwiched between the pad on one side in which oil has been preliminarily penetrated and the pad on the other side in which oil has not been permeated, so that two chains that face each other are sandwiched. By adjusting the opening and closing of the part, you can squeeze the oil from the pad on one side and supply it to the chain. Excess oil can be received by the pad on the other side, so there is no worry of oil dripping. Further, by moving the refueling support device relative to the chain with the chain sandwiched, it is possible to refuel in a short time over the entire length of the chain.

In refueling support apparatus door chain according to the present invention, whereas the nip side, whereas lubrication passage is provided which communicates with the side of the pad Tei Rukoto are preferred.

According to the refueling support device having the above configuration, it is possible to supply the oil to the pad on one side by injecting oil into the lubrication passage from the outside. Even if oil drips from the pad on one side, the oil on the other side facing the pad on one side receives the dripping oil, so that there is no fear of oil dripping from the refueling support device.

In refueling support apparatus of a door chain in accordance with the present invention, one side of the pad and the other side of the pad is preferably a state of being fitted detachably to the corresponding nip.

According to the refueling support device having the above configuration, for example, when the pads on one side and the pads on the other side are soiled by refueling over the entire length of the chain, they can be easily replaced. Accordingly, the refueling support device can clean the chain in addition to refueling the chain.

Refueling support method door chain according to the present invention, the two pinching portions facing each other, and has two operation shank facing each other on the opposite side is provided across the fulcrum, and, mutually wrote each other IniMuko 2 one of the operation handle portion has a structure of opposite pliers capable of adjusting the opening and closing of the two pinching portions facing the physician each other in a fulcrum by grasping with one hand, two pinching portions, facing each other to sandwich the door chain A biasing means that is configured by one side of the sandwiching portion and the other side of the sandwiching portion, and that provides a biasing force for opening and closing the one side of the sandwiching portion and the other side of the sandwiching portion, and the one side of the sandwiching portion to the other side of the sandwiching portion. one side of the pad in a state of being fitted opposite, and, using a refueling support apparatus including the other side of the pad in a state of being fitted opposite the one side of the pad at the nip of the other side, using the door openers A method for assisting lubrication of a door chain that is used, in which oil is applied to the lubrication passage provided in the pinch on one side to allow oil to penetrate into the pad on one side, and the operation handle is gripped to pinch the one side. parts and the other side of the nip by adjusting the opening and closing of the nip of the nip and the other side of the way one side door chain falls between the adjustment to one side of the nip and the other gripping force of the operating handle portion side nip gap sandwiched door chain between the narrowed one side pads and the other side of the pad of the further, while from the side of the nip and the other side gap narrowed whereas the side pad of squeezing oil Lubricate the door chain, received by the excess oil to the other side pad, and a refueling support device is moved relatively with respect to door chain and performing a refueling along the extending direction of the door chain.

According to the door chain refueling support method having the above structure, the chain is sandwiched between the pad on one side in which oil has been preliminarily impregnated and the pad on the other side in which oil has not been impregnated. By adjusting the opening and closing of the sandwiching part that fits, the oil can be squeezed out from the pad on one side and supplied to the chain. Excess oil can be received by the pad on the other side, so there is no worry of oil dripping. Further, by moving the refueling support device relative to the chain with the chain sandwiched, it is possible to refuel in a short time over the entire length of the chain.

According to the door chain refueling support device and the door chain refueling support method of the present invention, it is possible to refuel over the entire length of the chain in a short time without worrying about oil dripping.

FIG. 1 is a diagram showing an elevator door opening/closing system in which a door chain refueling support device according to an embodiment of the present invention is used. It is a figure which shows the oil supply work of the door chain of an elevator using the oil supply assistance apparatus for door chains of the embodiment which concerns on this invention. FIG. 3 is a perspective view of a refueling support device for a door chain according to the embodiment of the present invention. It is a figure which shows the oil supply assistance apparatus of the door chain in embodiment which concerns on this invention, FIG.4(a) is a top view, (b) is a side view. It is a flow chart which shows the procedure of the refueling support method of the door chain in the embodiment concerning the present invention. FIG. 6 is a diagram showing a procedure for supplying oil to a refueling support device in the door chain refueling support method according to the embodiment of the present invention. It is a figure which shows the procedure of pinching a chain in the oil supply assistance method of the door chain in embodiment which concerns on this invention.

Embodiments according to the present invention will be described in detail below with reference to the drawings. In the following, a car door will be described as an elevator opening/closing door, but this is an example for description. For example, in the case of a system in which the landing doors are opened and closed by using a door chain separately from the opening and closing of the car doors, it is possible to use a refueling assistance device for the door chains to refuel the door chains of the elevator landing doors. it can. Further, although four doors are described as the opening/closing doors of the elevator, this is an example for description, and the number of opening/closing doors may be other than four. For example, it may be a double door.

In the following, as the pliers structure of the refueling support device, if the grips of the two operation handle portions facing each other are narrowed, the spacing between the two gripping portions on the opposite side of the fulcrum is also reduced. Describe. This is an example for explanation, and conversely, when the grips of the two operation handle portions facing each other are widened, the distance between the two facing gripping portions on the opposite side of the fulcrum is narrowed. A reverse action plier structure may be used.

The shapes, dimensions, opening and closing angles, etc. described below are examples for description, and can be appropriately changed according to the specifications of the refueling support device for the door chain. In the following, similar elements are denoted by the same reference symbols in all the drawings, and overlapping description will be omitted.

FIG. 1 is a diagram showing a door opening/closing system 10 in an elevator car. FIG. 2 is a diagram showing how the door chain 40 in the door opening/closing system 10 is refueled using the refueling support device 50 for the door chain. Hereinafter, the refueling support device 50 for the door chain will be referred to as the refueling support device 50 unless otherwise specified. FIG. 1 is a front view of a car 46 viewed from a landing 47 side of a building in which an elevator is installed, and FIG. 2 is a cross-sectional view of a hoistway 45 provided in the building to show the car 46 and the like. FIG.

Three directions orthogonal to FIGS. 1 and 2 are shown. The up-down direction is the direction in which the hoistway 45 extends, with the upper floor side being upward and the lower floor side being downward. The left-right direction and the depth direction are directions parallel to the floor surface of the landing 47, and the left-right direction is a direction that is lateral when the hoistway 45 is seen from the landing 47, and the right side toward the hoistway 45 is the right side and the left side is the left side. Is to the left. The depth direction is a direction perpendicular to the left-right direction, with the hall 47 side being the hall direction and the hoistway 45 side being the hoistway direction.

The door opening/closing system 10 is a system that opens/closes four doors 12, 13, 14, 15 provided at an entrance/exit of a car 46. FIG. 1 shows the case where the four doors 12, 13, 14, and 15 are fully closed. Since the four doors 12, 13, 14, and 15 are opened and closed in conjunction with each other, the doors 12 and 14 shown on the left side of the center in FIG. Doors 13 and 15 shown on the right side of the figure open and close to the right from the center side. The two central doors 12 and 13 open and close faster than the left and right doors 14 and 15. In FIG. 1, the opening and closing directions and the opening and closing speeds of the four doors 12, 13, 14, and 15 are schematically shown by arrows.

The roller holding portion 16 is a member that is attached to the upper part of each of the four doors 12, 13, 14, and 15 and rotatably holds the roller 18, which is a cylindrical member. The guide rail 20 is provided over the respective upper portions of the four doors 12, 13, 14, and 15 and guides the opening and closing of the doors. Each of the four doors 12, 13, 14, 15 is provided when the roller 18 provided therein is placed on the guide rail 20 and when the four doors 12, 13, 14, 15 are opened and closed. The roller 18 rolls on the guide rail 20.

The chain attachment portions 22, 23, 24, 25 are members that are integrally fixed to the roller holding portions 16 of the doors 12, 13, 14, 15 and are ends of a door chain 40 that is a chain used for opening and closing the door. Parts are attached.

The drive system for driving the door chain 40 includes a motor output shaft 26, a first pulley 28 having an outer ring and an inner ring, a second pulley 32 having an outer ring and an inner ring, a third pulley 36 having an inner ring and an outer ring, and a fourth pulley A pulley 38 is included. It also includes a first belt 30 suspended by the motor output shaft 26 and an outer ring of the first pulley 28, and a second belt 34 suspended by an inner ring of the first pulley 28 and an outer ring of the second pulley 32. Further, it includes a position switch section 39 for detecting a door open/closed state, and a third belt 37 connecting the inner ring of the third pulley 36 and the position switch section 39. In FIG. 1, the chain is shown by a chain line and the belt is shown by a solid line.

The door chain 40 is an assembly of a plurality of chains 41, 42, 43, 44. Each chain 41, 42, 43, 44 is as follows between the second pulley 32, the third pulley 36, the fourth pulley 38 of the drive system and the four chain mounting portions 22, 23, 24, 25. Suspended by. An example of the total length of each chain 41, 42, 43, 44 is about 1 m to 2 m.

Both the chain 41 and the chain 42 have one end attached to the chain attachment portion 22 for the door 12 and the other end attached to the chain attachment portion 23 for the door 13. The chain 41 is suspended on the inner ring of the second pulley 32, and the chain 42 is suspended on the outer ring of the third pulley 36. The outer diameter of the inner ring of the second pulley 32 and the outer diameter of the outer ring of the third pulley 36 are the same. That is, equivalently, the chains 41 and 42 are one endless loop suspended between the inner ring of the second pulley 32 and the outer ring of the third pulley 36. The endless loop is connected to the door 12 at the middle of the lower partial chain via the chain mounting portion 22, and is connected to the door 13 at the middle of the upper partial chain via the chain mounting portion 23. Here, when the motor output shaft 26 rotates, the chain 41 and the chain 42 move integrally, but the lower partial chain and the upper partial chain of the endless loop move in opposite directions with respect to the left-right direction. To do. That is, when the door 12 moves to the left, the door 13 moves to the right, and conversely, when the door 12 moves to the right, the door 13 moves to the left. In this way, the doors 12 and 13 are opened and closed together as a set.

One end of each of the chains 43 and 44 is attached to the chain attachment portion 24 for the door 14, and the other end is attached to the chain attachment portion 25 for the door 15. The chain 43 is suspended on the inner ring of the third pulley 36, and the chain 44 is suspended on the fourth pulley 38. The outer diameter of the inner ring of the third pulley 36 and the outer diameter of the fourth pulley 38 are the same. That is, equivalently, the chain 43 and the chain 44 are one endless loop suspended between the inner ring of the third pulley 36 and the fourth pulley 38. As in the case of the chains 41 and 42, the endless loop is divided into the lower side and the upper side, and is connected to the doors 14 and 15 via the chain attachment portions 24 and 25 at the intermediate portions thereof. Here, when the third pulley 36 rotates via the chains 41 and 42 by the rotation of the motor output shaft 26, the chain 43 and the chain 44 move integrally, and as a result, the doors 14 and 15 form one set. Open and close together.

In the third pulley 36, the chains 41 and 42 move as the outer ring rotates, and the chains 43 and 44 move as the inner ring rotates. The ratio of the moving speed of the chains 41, 42 to the moving speed of the chains 43, 44 is determined by the ratio of the outer diameter of the outer ring to the outer diameter of the inner ring. Since the outer diameter of the outer ring>the outer diameter of the inner ring, (moving speed of the chains 41, 42)> (moving speed of the chains 43, 44), thereby (opening/closing speed of the doors 12, 13)> (door 14, (Opening and closing speed of 15).

Using a chain instead of a belt for the power transmission mechanism for opening and closing the door of an elevator is because the speed of the elevator is switched to the left and right as the door is opened and closed. This is because The belt may be insufficient in strength against a load caused by a large change in acceleration. Also, unlike a belt, the chain has less slippage, so the opening and closing position of the door is more accurate. In particular, a chain is often used to open and close the door of an elevator that is large and has a large opening and closing load, such as an elevator for a hospital or an elevator dedicated to freight.

FIG. 2 is a diagram showing how the door chain 40 is refueled. The door chain 40 is refueled by the maintenance worker 48 carrying the refueling support device 50 to the landing 47 with the elevator operation mode being the maintenance mode. The maintenance worker 48 opens the landing door (not shown) and adjusts the position of the car 46 in the hoistway 45 so that the door chain 40 provided on the upper side of the car 46 becomes a position suitable for refueling work. I will come. Then, the refueling support device 50 is used to refuel each of the plurality of chains 41, 42, 43, 44 forming the door chain 40.

FIG. 3 is a perspective view showing the refueling support device 50 during refueling work of the chain 41. FIG. 4 is a top view and a side view of the refueling support device 50 in FIG. FIG. 4A is a top view of the state of FIG. 3 seen from above, and FIG. 4B is a side view seen from the left. FIG. 3 shows the right hand 49, which is the dominant arm of the maintenance worker 48 during refueling work. The configuration of the refueling support device 50 will be described with reference to these drawings. First, the configuration of the chain 100 as the basic structure of the door chain 40 will be described. The chain 100 is one of a plurality of chains forming the door chain 40, and is, for example, the chain 41.

As shown in FIGS. 3 and 4A, in order to form the chain 100, two outer plates 102 and 103 that form an outer link are joined by two pins 106 to form an inner link. The inner plates 104 and 105 are joined together by two bushes 108. At this time, the bush 108 and the pin 106 are coaxially assembled and a plurality of assembled bodies are connected endlessly. Thus, when the chain 100 is driven, because between the bushing 108 and the pin 106 assembled coaxially contacts, to reduce the contact resistance, in order to suppress wear caused by contact, the bushing 108 and the pin 106 Lubrication is required for lubrication during. The refueling support device 50 is a device that assists the work of refueling between the bush 108 and the pin 106 of the chain 100.

The refueling support device 50 has a pliers structure known as radio pliers, nippers, or the like. The pliers structure in the refueling support device 50 is configured to include an operation handle portion 52 and a sandwiching portion 62 on the opposite side of the operation handle portion 52 with the fulcrum 60 interposed therebetween.

The operation handle portion 52 is a handle portion that the maintenance worker 48 holds with the right hand 49 and opens and closes the sandwiching portion 62 by adjusting the holding amount. The operation handle portion 52 is composed of two operation handle portions 54 on one side and an operation handle portion 56 on the other side having a length that can be held by the right hand 49. One end side of the operation handle 54 on one side and one end side of the operation handle 56 on the other side are rotatably held at a fulcrum 60. The other end side of the one-sided operation handle portion 54 and the other end side of the other-sided operation handle portion 56 serve as a grip portion and are arranged to face each other.

The sandwiching portion 62 is a member that sandwiches the chain 100 and that faces each other. When the two members are distinguished and referred to as one side sandwiching portion 64 and the other side sandwiching portion 66, the one side sandwiching portion 64 corresponds to the portion where the other side operation handle portion 56 extends beyond the fulcrum 60. The sandwiching portion 66 on the other side corresponds to the portion where the operation handle 54 on the one side extends beyond the fulcrum 60. Therefore, the operation handle 54 on the one side and the operation handle 56 on the other side intersect each other in the X shape at the fulcrum 60, and become the sandwiching portion 66 on the other side and the sandwiching portion 64 on the one side. When the maintenance worker 48 moderates the grip of the two facing operation handle portions 54 and 56 with the right hand 49 and narrows the opening angle between the operation handle portion 54 on one side and the operation handle portion 56 on the other side, The opening angle between the pinch portion 64 on one side and the pinch portion 66 on the other side with respect to the fulcrum 60 is narrowed. On the contrary, the maintenance worker 48 adjusts the grip of the two facing operation handle portions 54 and 56 with the right hand 49 in the opposite direction, so that the operation handle portion 54 on the one side and the operation handle portion 56 on the other side are held. When the opening angle is increased, the opening angle between the sandwiching portion 64 on one side and the sandwiching portion 66 on the other side is expanded. Here, the opening angle is a view angle with respect to the fulcrum 60.

The leaf spring 58 is a biasing means that applies a biasing force to the opening and closing of the two facing sandwiching portions 64 and 66. The opening and closing of the two facing sandwiching portions 64 and 66 correspond to the opening and closing of the two facing operating handle portions 54 and 56 with the fulcrum 60 interposed therebetween, so that the leaf spring 58 is provided with the two facing operating handle portions 54 and 56. Provides a biasing force for opening and closing. The leaf spring 58 is provided in the vicinity of the fulcrum 60 when one end side of the one-sided operation handle portion 54 and one end side of the other-sided operation handle portion 56 approach the fulcrum point 60. The biasing force of the leaf spring 58 is applied to the two facing operation handle portions 54, 56 in a direction to widen the opening angle between the two facing operation handle portions 54, 56.

By providing the leaf spring 58, the maintenance worker 48 adjusts the gripping force of the right hand 49 against the biasing force of the leaf spring 58 when adjusting the opening and closing of the two facing operation handle portions 54 and 56. If you do it When the right hand 49 increases the force of gripping the two operation handle parts 54 and 56 facing each other, the opening angle between the two operation handle parts 54 and 56 facing each other becomes narrower. The opening angle between the matching operation handle portions 54 and 56 is widened. In this way, the maintenance worker 48 grasps the two operation handle portions 54 and 56 facing each other, and strengthens or loosens the gripping force, whereby the opening and closing of the two opposing sandwiching portions 64 and 66 can be controlled.

Pads 70 and 72 made of a material capable of absorbing oil are removably attached to the sandwiching portion 64 on one side and the sandwiching portion 66 on the other side, respectively. As shown in FIGS. 3 and 4A, the two pads 70 and 72 have a disk shape. The two sandwiching portions 64, 66 are provided with pad holding corner portions having a partial arc for holding a part of the outer peripheral surfaces of the disk-shaped pads 70, 72. The pad holding corners are provided at four positions so as not to interfere with the movement of the chain 100 relative to the refueling support device 50 in the left-right direction. In FIGS. 3 and 4A, the distance L ₀ between the pad holding corners adjacent to each other in the depth direction is shown. The interval L ₀ is set to be larger than the dimension L _C of the chain 100 in the depth direction. The pads 70 and 72 are fitted inside the partial arc surrounded by the four pad holding corners. The pads 70 and 72 can be removably attached to the sandwiching portion 62 by forming the pad holding corners into partial arcs. Further, by setting L ₀ >L _C , the pad holding corner portion does not hinder the relative movement of the chain 100, and the lateral displacement of the pads 70, 72 due to the relative lateral movement of the chain 100. And desorption is prevented.

The oil-filling portion 74 is a member that is provided on the sandwiching portion 64 on one side and that guides the pad 70 to inject the oil for lubricating the chain 100. The oil-filling part 74 includes a cup-shaped lid part 76, an oil-filling port 78 (see FIGS. 4A and 6) covered by the lid part 76, and a flexible member that supports the lid part 76 and the oil-filling port 78 so that they can be opened and closed. And a knob 82 for opening and closing provided on the lid 76. The oil injection port 78 is a ring-shaped member, and an oil injection passage 79 (see FIG. 6) is provided in the sandwiching portion 64 on one side corresponding to the inner diameter opening thereof.

When the chain 100 is refueled using the refueling support device 50, the pad 70 on one side is refilled with oil for chain refueling using the lubrication section 74. Since the oiling portion 74 is not provided on the sandwiching portion 66 on the other side, the pad 72 on the other side is not lubricated. Therefore, in the refueling support device 50 in FIG. 3, the pad 70 on one side is in a state of permeating oil in advance, but the pad 72 on the other side is in a state of not permeating oil.

In this state, by grasping the two facing operation handle portions 54 and 56 of the refueling support device 50, the opening angle between the sandwiching portion 64 on one side and the sandwiching portion 66 on the other side is appropriately widened, and The chain 100 is sandwiched between the pad 70 and the pad 72 on the other side. When the two operation handle portions 54 and 56 facing each other are strongly gripped, the oil that has permeated the pad 70 on one side is squeezed out and transmitted through the outer plates 102 and 103 and the inner plates 104 and 105 of the chain 100. As a result, oil is supplied to the bush 108 and the pin 106. The excess oil is further transmitted through the outer plates 102 and 103 and the inner plates 104 and 105, is received by the pad 72 on the other side, and is sucked. This prevents the oil from dripping outside the refueling support device 50 during refueling. In this refueling state, refueling can be sequentially performed along the extending direction of the chain 100 by a simple operation of moving the refueling support device 50 left and right relative to the chain 100.

Next, a refueling support method for a door chain using the refueling support device 50 will be described with reference to FIGS. Hereinafter, the refueling support method for the door chain is simply referred to as a refueling support method. FIG. 5 is a flowchart showing the procedure of the refueling support method. 6 and 7 are diagrams showing the contents of the procedure of FIG.

The first step of the refueling support method is setting the maintenance site (S10). Maintenance of the door chain 40 of the elevator is performed by a maintenance worker 48 who goes to the elevator according to a predetermined maintenance schedule. The maintenance schedule is, for example, a regular maintenance due date once a year. The maintenance worker 48 has the refueling support device 50 and goes to an arbitrary landing 47 of the elevator to be maintained. The setting of the maintenance site is performed by setting the operation mode of the elevator to the maintenance mode, opening the hall door, and setting the position of the car 46 to a position suitable for the maintenance work at the arbitrary hall 47. Since this has been described with reference to FIG. 2, further description will be omitted. Note that, as shown in FIG. 2, the refueling work for the door chain 40 for the car 46 is performed from the hall 47 side. However, when refueling the door chain used for the hall door, the refueling work is performed from the car 46 side. Is done.

Next, the oil for refueling determined by the refueling support device 50 is injected (S12). FIG. 6 is a diagram showing lubrication of the refueling support device 50. The refueling support device 50 is housed in a predetermined tool box or the like, but due to the biasing force of the leaf spring 58, the opening angle between the two facing operation handle portions 54 and 56 is maximized, and it remains as it is. Large storage volume. Therefore, a suitable tightening band 90 is used to narrow the opening angle between the two facing operation handle portions 54 and 56, and the operation handle portions 54 and 56 are stored in a tool box or the like.

In the refueling support device 50 in this state, the maintenance worker 48 opens the lid part 76 by pinching the opening/closing knob 82 of the oil filling part 74 provided on the pinch portion 64 on one side. When the lid 76 is opened, the ring-shaped oil filling port 78 is exposed. Since the lubrication passage 79 penetrates the nipping portion 64 on one side where the ring-shaped lubrication port 78 is provided, corresponding to the inner diameter opening of the ring-shaped lubrication port 78, the pad 70 on one side is connected to the lubrication port 78. It is exposed under the lubrication passage 79 via the. In some cases, the lubrication portion 74 may be omitted and the lubrication passage 79 may be provided only in the sandwiching portion 64 on one side.

The maintenance worker 48 prepares the lubrication bottle 92 in advance. The oiling bottle 92 is a soft plastic bottle that has an oiling nozzle at its tip and stores oil 94 for oil supply therein. When the maintenance worker 48 points the tip of the nozzle of the lubrication bottle 92 toward the lubrication port 78 and presses the soft main body of the lubrication bottle 92 by hand, the oil 94 inside comes out as oil droplets 96 from the nozzle. The oil droplet 96 passes through the oil supply passage 79 and is sucked into the pad 70 on one side. This allows the oil 94 to penetrate into the pad 70 on one side. Then, the opening/closing knob 82 is pinched, and the lid portion 76 is closed. This completes the lubrication in refueling support device 50. Even if the oil drops 96 are supplied too much and excess oil drips from the pad 70 on one side, the pad 72 on the other side facing the pad 70 on one side receives the dripping oil. There is no concern about oil dripping from the refueling support device 50.

As the lubrication bottle 92, a so-called engine flapper can be used. Further, as the oil 94 for refueling, lubricating oil for industrial equipment can be used. For example, Gargoyle DTE (product name) manufactured by Mobil can be used.

When the lubrication assist device 50 is completely lubricated, the maintenance worker 48 selects one of the plurality of chains 41, 42, 43, 44 constituting the door chain 40 as the chain to be lubricated (S14). FIG. 3 is an example in which the chain 41 is selected.

Next, the selected chain 41 is sandwiched between the two facing sandwiching portions 64 and 66 of the refueling support device 50 (S16). This process proceeds in several steps. First, the tightening band 90 is removed from the refueling support device 50 that has completed lubrication. As a result, the opening angle between the two operating handle portions 54 and 56 facing each other is maximized by the biasing force of the leaf spring 58. At the same time, the opening angle between the two facing sandwiching portions 64 and 66 is maximized. The maintenance worker 48 holds the operating handle portions 54 and 56 facing each other in this state with the right hand 49 attached. Little grip is applied. Then, the refueling support device 50 held by the right hand 49 is carried toward the chain 41, and the chain 41 is arranged between the two facing sandwiching portions 64 and 66. FIG. 7 is a diagram showing that state. After that, the maintenance worker 48 strengthens the gripping force of the two facing operation handle portions 54 and 56 with the right hand 49 and narrows the opening angle of the two facing sandwiching portions 64 and 66, as shown in the state of FIG. Then, the pad 70 on one side and the pad 72 on the other side are brought into contact with the chain 41. The procedure up to this point is the sandwiching step in S16.

Next, the chain 41 is refueled (S18). This process also proceeds in several steps. First, the maintenance worker 48 gradually grips the two facing operation handle portions 54 and 56 with the right hand 49. As a result, the oil that has permeated the pad 70 on one side is squeezed out, and is transmitted to the outer plates 102 and 103 and the inner plates 104 and 105 of the chain 100 to be supplied to the bush 108 and the pin 106. The excess oil is further transmitted through the outer plates 102 and 103 and the inner plates 104 and 105, is received by the pad 72 on the other side, and is sucked. This prevents the oil from dripping outside the refueling support device 50 during refueling. As shown in FIGS. 3 and 4(a), the pad 70 on one side has a size capable of sandwiching about two sets of bushes 108 and pins 106. Oil is supplied only to the pin 106.

Next, in the refueling state in which the oil is squeezed out from the pad 70 on one side, the refueling support device 50 is moved left and right relative to the chain 100. One method is to move the chain 41 in the left-right direction by operating the drive system that drives the door chain 40 without moving the refueling support device 50. In this method, all the chains 41, 42, 43, 44 move, and accordingly all the doors 12, 13, 14, 15 also open and close, so caution is required depending on the moving speed. In another method, the maintenance worker 48 moves the right hand 49 holding the refueling support device 50 in the left-right direction along the chain 41 while keeping the drive system for driving the door chain 40 stopped. In this case, as shown in FIG. 1, since the chain 41 has two parts, an upper part and a lower part, with the second pulley 32 interposed therebetween, the refueling work is performed twice. The portion suspended by the second pulley 32 is not refueled. Refueling of the portion suspended by the second pulley 32 can be performed by driving a drive system that drives the door chain 40. The procedure up to this point is the step S18 of refueling the chain 41.

When refueling is completed for the entire length of the chain 41, the entrapment is released (S20). The maintenance worker 48 loosens the force of gripping the two facing operation handle portions 54, 56 so that the two facing sandwiching portions 64, 66 and the chain 41 do not come into contact with each other, and the refueling support device 50 is removed from the chain 41. Let go.

Next, it is determined whether or not refueling is completed for all chains (S22). In this case, the judgment is denied because the lubrication of the chain 41 is only completed. If the determination in S22 is negative, the process returns to S14 and another chain is selected. For example, when the chain 42 is selected, the above procedure is repeated for the selected chain 42. At S22, the determination is denied because the chains 43 and 44 are not yet refueled, and the above procedure is repeated. By repeating this, when the refueling of all the chains 41, 42, 43, 44 is completed, the determination in S22 is affirmed, and the maintenance work for refueling the door chain 40 is completed. When the maintenance work for refueling is completed, the pad 70 on the one side and the pad 72 on the other side are replaced with new pads 70, 72, and the opening angle between the two operation handle parts 54, 56 facing each other using the tightening band 90. Narrow it and store it in the specified tool box.

When the oil that has permeated the pad 70 on one side has been squeezed out during the refueling operation, relubrication can be performed using the lubrication unit 74. Further, when the pad 70 on the one side and the pad 72 on the other side are soiled by the oil supply over the entire length of the chain 41 or the like, these are removed from the sandwiching portions 64, 66 on the one side and replaced. Accordingly, the refueling support device can clean the chain in addition to refueling the chain.

10 door opening/closing system, 12, 13, 14, 15 door, 16 roller holding portion, 18 roller, 20 guide rail, 22, 23, 24, 25 chain mounting portion, 26 motor output shaft, 28 first pulley, 30 first Belt, 32 2nd pulley, 34 2nd belt, 36 3rd pulley, 37 3rd belt, 38 4th pulley, 39 Position switch part, 40 Door chain, 41, 42, 43, 44, 100 chain, 45 Hoistway , 47 landing site, 48 maintenance worker, 49 right hand, 50 refueling support device (for door chain), 52, 54, 56 operation handle part, 58 leaf spring, 60 fulcrum, 62, 64, 66 pinch part, 70, 72 pad , 74 lubrication part, 76 lid part, 78 lubrication port, 79 lubrication passage, 80 flexible connection part, 90 tightening band, 92 lubrication bottle, 94 oil, 96 oil drop, 102, 103 outer plate, 104, 105 inside Plate, 106 pins, 108 bushes.

Claims (4)

A refueling support device for supporting refueling of a door chain used for a door opening/closing device of an elevator,
Facing each other two pincers, and is provided with two operating handle portions facing each other on opposite sides of the fulcrum, and, opposite the fulcrum by grasping in one hand the two operating shank facing the each other physician has the structure of the pliers capable of adjusting the opening and closing of the two pinching portions facing the each other physician side,
The two sandwiching portions are composed of one sandwiching portion and the other sandwiching portion facing each other for sandwiching the door chain,
An urging means for applying an urging force to the opening and closing of the sandwiching portion on one side and the sandwiching portion on the other side ;
And one side of the pad while being pre penetrate the oil is fitted opposite the nip of the other side in the nip of the one side,
And on the other side of the state not impregnated with oil it is fitted opposite the one side of the pad at the nip of the other side in the pad,
A refueling support device for a door chain, including: In refueling support apparatus door chain according to claim 1, whereas the nip side, one side of the pad refueling support apparatus door chain oiling passage communicating is characterized by Tei Rukoto provided. The refueling support device for a door chain according to claim 1,
One side pad and the other side pad,
A refueling support device for a door chain, characterized in that it is in a state of being detachably fitted into corresponding nips . Facing each other two pincers, and has two operation shank facing each other on the opposite side is provided across the fulcrum and fulcrum by grasping in one hand the two operating shank mutually paddles each other IniMuko of having a structure of the pliers opening and closing can be adjusted in two nip facing the physician each other on the opposite side, the two pinching portions, nip on one side facing each other to sandwich the door chain and the other side pincers A biasing means for applying a biasing force to the opening and closing of the sandwiching portion on one side and the sandwiching portion on the other side, the pad on the one side in a state where the sandwiching portion on one side is fitted to face the sandwiching portion on the other side, and, using a refueling support device comprising one side of the other side of the pad in a state of being fitted opposite the pad in the nip of the other side, by the fueling support method for supporting a refueling for door chain for use in a door opening and closing device There
Lubricate the lubrication passage provided in the sandwich on one side to allow oil to penetrate into the pad on one side,
Adjust the opening and closing of the one side sandwiching part and the other side sandwiching part so that the door chain can be inserted between the one side sandwiching part and the other side sandwiching part by gripping the operation handle part.
Operating shanks gripping force sandwiching the adjustment to the other hand side of the nip and the other side of the nip by narrowing the spacing one side of the pad and the door chain between the other side of the pad, and further, whereas the side nip And narrow the gap on the other side to squeeze oil from the pad on one side to supply oil to the door chain, and receive excess oil on the pad on the other side,
Refueling support method door chain, characterized in that to the door chain is relatively moved refueling support apparatus performs refueling along the extending direction of the door chain.

Images