JP2014210655A - Grease supply/discharge device for passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grease supply/discharge device for passenger conveyor which can change a grease for lubricating a bearing of a terminal gear with good accuracy.SOLUTION: A grease supply/discharge device includes a grease supply unit 17 which supplies a grease to a bearing 5A of a terminal gear 4A of an escalator, a supplied grease weight detection portion 18 which detects weight of the grease supplied from the grease supply unit 17, a discharged grease storage unit 19 which stores the grease discharged from the bearing 5A, a discharged grease weight detection portion 20 which detects weight of the discharged grease stored in the discharged grease storage unit 19 and a weight determination portion 21 whether or not weight of the supplied grease detected in the supplied grease weight detection portion 18 is sufficiently comparable with weight of the discharged grease detected in the discharged grease weight detection portion 20.

Description

  The present invention relates to a grease supply / discharge device for a passenger conveyor that supplies grease to a bearing of a terminal gear provided in a passenger conveyor such as an escalator and collects the grease discharged from the bearing.

  In general, a rotary bearing is provided at the terminal portion of the escalator. In order to maintain the performance of the rotary bearing, it is necessary to periodically replace the grease. That is, it is necessary to periodically supply new grease to the bearing, discharge the old grease from the bearing, and refresh the grease inside the bearing. If driving of the escalator is continued while grease is not refreshed or grease is insufficiently supplied for a long time, the grease deteriorates and the lubricating performance of the bearing is impaired. Therefore, metal contact occurs inside the bearing, the terminal gear is not operated smoothly, and noise is generated. In addition, the bearings may be astringent or damaged, requiring extensive repairs. One method for diagnosing the state of the bearing is to check whether or not foreign matter such as iron powder is contained in the discharged grease.

  In the maintenance of conventional escalator terminal gears, a fixed amount of new grease is regularly supplied to the bearings and old grease is discharged. As a result, the terminal gear is smoothly rotated to maintain the operation performance of the escalator. However, the terminal gear of the escalator is disposed in the gap of the truss that supports the escalator. Therefore, an operator who performs maintenance of the terminal gear must perform complicated work to check how much grease has been discharged when new grease is supplied and whether or not foreign matter is included in the discharged grease. It was necessary.

  In addition, although it differs from the grease supply which this invention makes object, the patent document 1 has proposed the oil change apparatus. This conventional technology is necessary for maintaining the performance by controlling the flow rate control means so that the flow rate in the hose that sends out the waste oil and the flow rate in the hose that sends out the new oil are constant, and by making the old and new oil amount the same. The amount of oil is supplied to the transmission.

JP-A-8-61472

  By the way, the grease which is the object of the present invention is different from the oil shown in Patent Document 1 and has a high viscosity and is in a semisolid state. It is not practical to adopt the idea of changing the oil volume so as to be equal to the grease supply as it is.

  The present invention has been made in view of the above-described prior art, and an object of the present invention is to provide a grease supply / discharge device for a passenger conveyor capable of accurately exchanging grease for lubricating a bearing of a terminal gear. .

  In order to achieve the above object, a grease supply / discharge device for a passenger conveyor according to the present invention supplies grease to a bearing of a terminal gear provided in the passenger conveyor and collects the grease discharged from the bearing. In the grease supply / discharge device, a grease supply device that supplies grease to the bearing, an oil supply grease weight detection unit that detects the weight of the grease supplied from the grease supply device to the bearing, and grease discharged from the bearing. A discharge grease storage device for storing, and a discharge grease weight detection unit for detecting the weight of the discharge grease stored in the discharge grease storage device, and the oil supply grease weight detected by the oil supply grease weight detection unit and the discharge A weight determination unit is provided for determining whether or not the discharged grease weight detected by the grease weight detection unit is equal. To have.

  In the present invention, when it is determined that the weight of the oil supply grease and the weight of the discharge grease are equal to each other by the weight determination unit, it can be recognized that the old grease has been correctly replaced with the new grease, and the terminal gear bearing provided in the passenger conveyor is provided. The grease to be lubricated can be replaced with high accuracy. Thereby, this invention can improve the reliability of grease replacement | exchange operation | work compared with the past.

It is a side view which shows the escalator mentioned as an example of the passenger conveyor with which one Embodiment of the grease supply / discharge device which concerns on this invention is provided. It is a principal part enlarged view of the escalator shown in FIG. It is a flowchart which shows an example of the oil supply procedure of this embodiment.

  Embodiments of a grease supply / discharge device for a passenger conveyor according to the present invention will be described below with reference to the drawings.

  The passenger conveyor provided with an embodiment of the present invention is, for example, an escalator. As shown in FIG. 1, the escalator includes a drive motor 1, a speed reducer 2, a driving chain 3, terminal gears 4A and 4B, and these Bearings 5A and 5B for terminal gears 4A and 4B are provided. In addition to the step 6, the step chain 7, the hand rail 8, the hand rail drive device 9, the drive roller 10, the drive chain 11, the entire mechanism of the escalator is supported, and the truss 12 formed of an iron frame and the escalator are activated. A control panel 15 that performs start / stop control of the operation panel 13 that performs the stop operation and the monitor 14 provided on the operation panel 13 and that controls the operation of the escalator is provided. The terminal gears 4 </ b> A and 4 </ b> B described above are arranged in a gap in the truss 12.

  When start-up is instructed on the operation panel 13, the control panel 15 supplies power to the drive motor 1. A drive pulley is applied to the drive shaft of the drive motor 1, and the drive force of the drive motor 1 is transmitted to the driving chain 3 via the speed reducer 2. The driving chain 3 transmits the driving force of the driving motor 1 to the terminal gear 4A installed in the upper terminal. The step chain 7 connected to the step 6 is wound around the terminal gear 4A installed at the upper part and the terminal gear 4B installed at the lower part, and circulates together with the step 6 as the upper terminal gear 4A rotates. A step chain 7 and a drive chain 11 are hung on the upper terminal gear 4A. The drive chain 11 is hung on a gear attached to the shaft of the drive roller 10 that narrows the handrail 8 in the handrail drive device 9. Accordingly, the step 6 and the handrail 8 are circulated in synchronization with the rotation of the upper terminal gear 4A. Passengers on the steps 6 are transported safely by gripping the handrail 8. In addition, oil supply to the bearings 5A and 5B of the terminal gears 4A and 4B according to the present invention is performed in the upper machine chamber 16A and the lower machine chamber 16B.

  The grease refueling device according to the present embodiment is disposed in the upper machine chamber 16A as shown in FIG. 2, for example.

  As shown in FIG. 2, the grease supply device according to the present embodiment detects a grease supply device 17 that supplies grease to the bearing 5 </ b> A of the terminal gear 4 </ b> A, and the weight of the grease supplied from the grease supply device 17. An oil supply grease weight detection unit 18, a discharge grease storage device 19 that recovers the grease discharged from the bearing 5 </ b> A, and a discharge grease weight detection unit 20 that detects the weight of the discharge grease recovered by the discharge grease storage device 19 are provided. ing.

  In addition, the present embodiment includes a weight determination unit 21 that determines whether the weight of the refueling grease detected by the refueling grease weight detection unit 18 is equal to the weight of the discharged grease detected by the discharged grease weight detection unit 20. Yes. The weight determination unit 21 is attached to the control panel 15 and has a function of supplying a power source for controlling the oil supply of the grease oil supply device 17. Further, the weight determination unit 21 has a function of outputting an escalator start / stop command. Along with this, the weight determination unit 21 has a function of controlling the execution of refueling of the grease refueling device 17 and controlling the operation of the escalator based on the comparison result between the weight of the refueling grease and the weight of the discharged grease. ing.

  The grease refueling device 17, the refueling grease weight detection unit 18, the discharged grease storage device 19, and the discharged grease weight detection unit 20 described above are arranged in the gap in the truss 12.

  The above-described grease refueling device 17 is accommodated in the oil supply portion main body 17A in which the grease to be supplied is accommodated, the supply port 17B for supplying the grease accommodated in the oil supply portion main body 17A to the bearing 5A, and the oil supply portion main body 17A. A guide path for guiding the grease to the supply port 17B, for example, a guide hose 17C is included.

  The above-described oil supply grease weight detection unit 18 is arranged below the oil supply unit body 17A and detects the oil supply grease weight based on the weight of the oil supply unit body 17A.

  The above-described discharged grease storage device 19 is fixed to the truss 12 so as to be positioned directly below the bearing 5A, and is received by the grease receiving portion 19A that receives the grease discharged from the bearing 5A, the tank 19B, and the grease receiving portion 19A. A guide path for guiding the grease to the tank 19B, for example, a guide pipe 19C is included.

  The above-described discharged grease weight detection unit 20 is arranged below the tank 19B of the discharged grease storage device 19 and detects the discharged grease weight based on the weight of the tank 19b.

  The operation panel 13 described above is provided with a key insertion portion 13A into which a key for starting the operation of the escalator is inserted. Further, the above-described monitor 14 provided on the operation panel 13 displays the determination result of the weight determination unit 21.

  That is, the monitor 14 determines that the lubrication grease weight has reached the predetermined weight Ag by the weight determination unit 21, and determines that the lubrication of the grease has been correctly performed when it is determined that the lubrication grease weight and the discharge grease weight are equal. “Refueling complete” is displayed.

  The monitor 14 determines that the weight of the oil supply grease has reached the predetermined weight Ag by the weight determination unit 21, determines that the oil supply grease weight and the discharge grease weight are not equal, and the exhaust grease weight is greater than the oil supply grease weight. When it is determined to be heavy, it is displayed that there is a possibility that foreign matter is mixed in the discharged grease.

  Further, the monitor 14 determines that the weight of the oil supply grease has reached the predetermined weight Ag by the weight determination unit 21, determines that the oil supply grease weight is not equal to the discharge grease weight, and discharges the grease weight compared to the oil supply grease weight. When it is determined that the oil is light, a message indicating that there is a possibility of grease leakage is displayed.

  When the weight determination unit 21 determines that the lubrication grease weight does not reach the predetermined weight Ag even though a predetermined time, for example, 1 minute has elapsed since the start of lubrication, the monitor 14 is short of the lubrication grease or the grease lubrication device. 17 indicates that there is a risk of failure or the like.

  FIG. 3 is a flowchart illustrating an example of a refueling procedure according to the present embodiment. Hereinafter, a procedure for supplying oil to the bearing 5A of the terminal gear 4A will be described with reference to FIG.

  First, as shown in step S1, the operator enables the function of the weight determination unit 21 attached to the control panel 15 and switches the escalator control to the fueling mode.

  Next, as shown in steps S2 and S3, the operator inserts and operates a key in the key insertion portion 13A of the operation panel 13 to start operation of the escalator. The weight determination unit 21 inputs an escalator operation start signal from the operation panel 13 to supply power to the grease refueling device 17 and enables functions of the oil supply grease weight detection unit 18 and the discharged grease weight detection unit 20. Thereby, the grease oil supply apparatus 17 starts oil supply to the bearing 5A of the terminal gear 4A in synchronization with the operation of the escalator.

  Here, when power is supplied to the grease refueling device 17, the grease accommodated in the oil supply unit main body 17A is guided to the supply port 17B via the induction hose 17C, and is supplied from the supply port 17B to the bearing 5A. In response to the supply of the new grease, the old grease is discharged from the bearing 5 </ b> A, and the discharged grease falls toward the grease receiving portion 19 </ b> A of the discharged grease storage device 19. Thus, the discharged grease that has fallen toward the grease receiving portion 19A accumulates in the tank 20 via the guide pipe 19C. In addition, the lubrication grease weight detection unit 17 detects the weight of the lubrication grease based on the weight of the lubrication unit main body 17A before refueling and the weight after refueling. Similarly, the discharged grease weight detection unit 20 detects the weight of the discharged grease based on the weight of the tank 20 before the discharged grease is accommodated and the weight of the tank 20 after the discharged grease is accommodated.

  Next, as shown in steps S4 to S8, the weight determination unit 21 compares the detection results of the refueling grease detection unit 18 and the discharged grease weight detection unit 20, and performs the following determination.

  Procedures S4 and S5 supply oil until grease oil supply device 17 becomes more than predetermined weight Ag which is the required oil supply weight of bearing 5A.

  In step S4, when the weight of the oil supply grease detected by the oil supply grease weight detection unit 18 reaches the predetermined weight Ag, the operation and oil supply of the escalator are stopped, and each determination after step S7 is performed.

  In step S5, when the weight of the lubrication grease detected by the lubrication grease weight detection unit 18 is lighter than the predetermined weight Ag and 1 minute has elapsed since the start of lubrication, the operation and lubrication of the escalator are stopped, and the grease lubrication device 17 It is determined that there is a possibility that the accommodated grease is insufficient or that the grease oil supply device 17 may be broken.

  In step S6, the discharged grease weight detection unit 20 detects the discharged grease weight.

  Steps S7 to S9 are steps for determining whether or not the oil supply grease weight is equal to the discharged grease weight.

  When it is determined in step S7 that the weight of the lubrication grease is equal to the weight of the discharge grease, the grease of the necessary lubrication weight is supplied to the bearing 5A, and it is determined that the lubrication is completed.

  Step S8 is a determination of whether or not the weight of the refueling grease is lighter than the weight of the discharged grease. When it is determined that the weight of the discharged grease is heavier than the weight of the refueling grease, iron powder or the like is included in the discharged grease. It is determined that there is a possibility that foreign matter is mixed, and a detailed confirmation inspection of the discharged grease accommodating device 19 is necessary.

  If it is determined in step S8 that the weight of the discharged grease is lighter than the weight of the oil supply grease, there is a possibility that grease leakage has occurred in the path from the oil supply portion main body 17A of the grease oil supply device 17 to the supply port 17B. It is determined that a detailed confirmation inspection of the oil supply route is necessary. When it determines in this way, additional oil supply is implemented.

  In step S <b> 9, each determination result described above is displayed on the monitor 14 of the operation panel 13. Thereafter, the grease discharged to the tank 19B of the discharged grease storage device 19 is collected at a predetermined location.

  In the above embodiment, grease is supplied to the bearing 5A of the terminal gear 4A arranged in the upper machine chamber 16A. However, grease is supplied to the bearing 5B of the terminal gear 4B arranged in the lower machine chamber 16B. Can also be performed in the same manner as described above.

  As described above, in the grease supply / discharge device according to the present embodiment, when the weight determination unit 21 determines that the oil supply grease weight and the discharge grease weight are equal, and the determination result is displayed on the monitor 14, it is old. The operator can recognize that the grease has been correctly replaced with new grease by looking at the monitor 14, and can accurately replace the grease that lubricates the bearings 5A and 5B of the terminal gears 4A and 4B provided in the escalator. Thereby, this embodiment can improve the reliability of grease exchange work.

  Further, in the present embodiment, when it is determined by the weight determination unit 21 that the oil supply grease weight and the discharged grease weight are not equivalent, matters that are presumed to be the cause of being not equivalent can be displayed on the monitor 14. Thus, the operator can easily infer the cause that the oil supply grease weight and the discharge grease weight are not equivalent, and can quickly cope with the cause.

4A terminal gear 4B terminal gear 5A bearing 5B bearing 13 operation panel 14 monitor 15 control panel 16A upper machine room 16B lower machine room 17 grease oil supply device 17A oil supply part body 17B supply port 17C induction hose (induction path)
18 Oil supply grease weight detection unit 19 Discharge grease storage device 19A Grease receiving unit 19B Tank 19C Guide pipe (guide channel)
20 Exhaust grease weight detection unit 21 Weight determination unit

Claims (5)

In the grease supply / discharge device of the passenger conveyor that supplies grease to the bearing of the terminal gear provided in the passenger conveyor and collects the grease discharged from the bearing,
A grease supply device that supplies grease to the bearing, an oil supply grease weight detection unit that detects the weight of the grease supplied from the grease supply device to the bearing, and a discharged grease storage device that stores the grease discharged from the bearing And a discharge grease weight detection unit that detects the weight of the discharge grease stored in the discharge grease storage device,
A grease supply for a passenger conveyor, comprising a weight determination unit for determining whether or not the lubrication grease weight detected by the lubrication grease weight detection unit is equal to the discharge grease weight detected by the discharge grease weight detection unit. Drainage device. In the grease supply / discharge device for a passenger conveyor according to claim 1,
A grease supply / discharge device for a passenger conveyor, comprising a monitor for displaying a determination result of the weight determination unit. In the grease supply / discharge device for a passenger conveyor according to claim 2,
The above monitor
When it is determined by the weight determination unit that the lubrication grease weight has reached a predetermined weight, and when it is determined that the lubrication grease weight and the discharge grease weight are equivalent, the fact that the grease has been properly lubricated is displayed,
When it is determined by the weight determination unit that the lubrication grease weight has reached a predetermined weight, the lubrication grease weight is not equal to the discharge grease weight, and the exhaust grease weight is determined to be greater than the lubrication grease weight Indicate that there is a possibility of foreign matter in the discharged grease,
When it is determined by the weight determination unit that the lubrication grease weight has reached a predetermined weight, the lubrication grease weight is not equal to the discharge grease weight, and the exhaust grease weight is determined to be lighter than the lubrication grease weight A grease supply / discharge device for a passenger conveyor, characterized in that there is a possibility of grease leakage. In the grease supply / discharge device for a passenger conveyor according to any one of claims 1 to 3,
The grease refueling device includes an oil supply unit main body in which grease to be supplied is stored, a supply port for supplying the grease stored in the oil supply unit main body to the bearing, and the grease stored in the oil supply unit main body. Including a taxiway leading to the mouth,
The oil supply grease weight detection unit is arranged at a lower portion of the oil supply unit main body, and is configured to detect the weight of the oil supply grease based on the weight of the oil supply unit main body.
The discharged grease storage device includes a grease receiving portion that receives the grease discharged from the bearing, a tank, and a guide path that guides the discharged grease received by the grease receiving portion to the tank,
The grease supply / discharge device for a passenger conveyor, wherein the discharge grease weight detection unit is disposed below the tank and detects the weight of the discharge grease based on the weight of the tank. In the grease supply / discharge device for a passenger conveyor according to any one of claims 1 to 4,
The passenger conveyor consists of an escalator provided on a truss,
While arranging the terminal gear inside the truss,
A grease supply / discharge device for a passenger conveyor, wherein the grease supply device, the supply grease weight detection unit, the discharge grease storage device, and the discharge grease weight detection unit are arranged inside the truss.

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