JP2007284220A - Lubricant applying device for movable handrail of passenger conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lubricant applying device for a movable handrail of a passenger conveyor coated with a proper amount of lubricant to a contact part of the movable handrail with a guide rail only when friction resistance of the movable handrail to the guide rail increases to dispense with replenishment of lubricant for a long time and stably running the movable handrail. <P>SOLUTION: This lubricant applying device for applying the lubricant 60 to the movable handrail 22 running in synchronization with a footstep 5 is provided with a footstep speed sensor part 33, a handrail speed sensor part 30, the lubricant 60 arranged by opposing to an internal wall face 26 of an ear part of the movable handrail 22 and movable in the direction in which it can come into contact with or leave the internal wall face 26 of the ear part, a lubricant applying means 28A for letting the lubricant 60 come into contact with or leave the internal wall face 26 of the ear part, and a lubricant application control panel 29 having a computing control means 64 for operating the lubricant applying means 28A so that the lubricant 60 comes into contact with or leaves the internal wall face 26 of the ear part based on signals detected by the handrail speed sensor part 30 and the footstep speed sensor part 33. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lubricant applicator for moving handrails of man conveyors such as escalators.

  The conventional lubrication device for the moving handrail of the escalator and the guide rail includes a lubricant disposed opposite to the contact portion of the moving handrail with the guide rail, and the guide rail is partially removed by being fixed to the stationary member of the escalator. A holding tool that holds the lubricant and presses it against the contact portion with the guide rail is provided (for example, see Patent Document 1).

Japanese Utility Model Publication No. 60-12579

  In conventional escalator moving handrail and guide rail lubrication devices, the moving handrail and the lubricant are always in contact with each other, so that the lubricant is applied to the moving handrail to reduce the frictional resistance between the moving handrail and the guide rail. It was. However, since the moving handrail is always in contact with the lubricant, the lubricant is worn out in a short period of time, or the lubricant is excessively applied to the moving handrail. Due to the wear of the lubricant in a short period of time, there has been a problem that maintenance for replenishing the lubricant must be frequently performed. In addition, when the lubricant is excessively applied to the moving handrail, the frictional resistance increases conversely between the moving handrail and the guide rail, and there is a problem that the traveling of the moving handrail cannot be performed stably.

  The present invention has been made to solve the above-described problem. Only when the frictional resistance between the moving handrail and the guide rail increases, an appropriate amount of lubricant is automatically applied to the contact portion of the moving handrail with the guide rail. It is an object of the present invention to obtain a lubricant applicator for a moving handrail of a man conveyor that does not need to be replenished with a lubricant over a long period of time and that allows the moving handrail to run stably.

  The lubricant applicator for the moving handrail of the man conveyor according to the present invention is guided by the peripheral edge of the balustrade that stands upright above the man conveyor main body of the man conveyor and travels to the exit side. Inverted at the lower part of the balustrade, travels to the entrance side, reverses at the end of the entrance and is guided to the periphery of the balustrade, and lubricates the endless moving handrail that runs in synchronization with the steps A step speed sensor for detecting the travel speed of the step, a handrail speed sensor for detecting the travel speed of the moving handrail, and the inner wall surface of the ear of the moving handrail that travels inside the lower part of the balustrade , A lubricant that can move in a direction that can be moved toward and away from the inner wall surface of the ear part, a lubricant application means that contacts and separates the lubricant from the inner wall surface of the ear part, a handrail speed sensor unit, and a step speed sensor Based on the detection signal from the Lubricant application control panel having calculation control means for operating the lubricant application means to calculate the speed and the running speed of the step, and to bring the lubricant into and out of contact with the inner wall surface of the ear based on the result of comparison between the two, It has.

  According to the lubricant application device for the moving handrail of the man conveyor of the present invention, only when the frictional resistance between the moving handrail and the guide rail increases, an appropriate amount of lubricant is automatically applied to the contact portion of the moving handrail with the guide rail. Since it is applied, there is no need to replenish the lubricant over a long period of time, and frequent replacement maintenance of the lubricant is eliminated. In addition, since the lubricant is not excessively applied to the moving handrail, the traveling of the moving handrail can be performed stably.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a schematic diagram for explaining the configuration of an escalator including a lubricant application device for a moving handrail according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 4 shows the configuration of the lubricant application means in a state in which the lubricant is separated from the inner wall surface of the moving handrail in the moving handrail lubricant application apparatus. FIG. 3 is a cross-sectional view showing a state in which the inner wall surface of the ear part of the moving handrail is pressed by the lubricant in FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 1, and FIG. 4 shows the configuration of the handrail speed sensor unit. FIG. 5 is a cross-sectional view taken along the line VV in FIG. 1, and FIG. 5 shows the configuration of the step speed sensor unit. FIG. 6 is a block diagram showing electrical connection of an escalator provided with a lubricant application device for a moving handrail according to Embodiment 1 of the present invention, and FIG. 7 shows lubricant application for a moving handrail according to Embodiment 1 of the present invention. It is an operation | movement flowchart of an apparatus.

A configuration of an escalator provided with a lubricant application device for a moving handrail according to Embodiment 1 of the present invention will be described with reference to FIGS.
In the escalator 1 as a man conveyor, an upper floor side sprocket 3a and a lower floor side sprocket 3b are respectively arranged inside the upper and lower floors of the escalator body 2 as a man conveyor body. Although not shown in detail in detail, the escalator main body 2 is formed in a hollow shape by a frame called a truss, which is a framework of the escalator 1, and an outer plate attached to the side surface.

Further, an endless step chain 4 is provided so as to be able to run over the upper floor side sprocket 3a and the lower floor side sprocket 3b. In addition, a number of steps 5 are continuously hooked on the step chain 4 and arranged in an endless conveyor shape. On the upper floor side of the escalator body 2, there is provided a drive device 6 having a drive motor 7 that rotates the step 5 together with the step chain 4 via the upper floor side sprocket 3 a. The drive chain 24 is stretched between the drive device 6 and the upper floor side sprocket 3a so that the torque of the drive motor 7 can be transmitted to the upper floor side sprocket 3a. An escalator control panel 8 that controls the travel of the escalator 1 is disposed adjacent to the drive device 6.
Here, it is assumed that the step 5 is rotating in a direction in which the user of the escalator 1 who has boarded from the lower floor side entrance is transported to the upper floor side exit.

Further, a pair of balustrades 9 are erected above the escalator body 2 so as to face each other with the steps 5 arranged like a conveyor interposed therebetween. In FIG. 1, only the balustrade 9 erected on one side of the facing balustrades 9 is illustrated.
A handrail driving device 10 is disposed inside the lower part of both balustrades 9. Each of the handrail drive devices 10 includes three drive rollers 11, three pressure rollers 12, and a terminal sprocket 13. Both terminal sprockets 13 are pivotally supported by a counter shaft (not shown) whose both ends are fixed to the outer plate of the escalator body 2.

  The movable handrail sprocket 14 is disposed so as to be coaxial and interlocked with the upper floor side sprocket 3 a, and the first movable handrail chain 15 a is stretched between the movable handrail sprocket 14 and the terminal sprocket 13. Yes. Further, a second moving handrail chain 15 b is stretched between the terminal sprocket 13 and the driving roller 11.

  Further, as shown in FIG. 4, the return path guide rail 16 has a long thin flat plate-like base portion 17 fixed to one surface of a long thick flat plate-like support piece 18 and has a T-shaped cross section. Yes. The other surface of each support piece 18 is combined with one surface near the one end portion of the fixing plate 19, and the support piece 18 and the fixing plate 19 are fastened together by bolts 20. The other end side of the fixing plate 19 is fixed to the truss of the escalator body 2. A plurality of fixing plates 19 are arranged at predetermined intervals from the lower floor side to the upper floor side. Further, the groove portion 21 is recessed in the surface of the base portion 17 on the side opposite to the supporting piece with the groove direction as the length direction.

  A plurality of return path guide rails 16 are arranged in a row so that the base portions 17 are directed downward and in contact with each other, and extend from the lower floor side to the upper floor side so as to extend from the lower part of the balustrade 9. The bolts 20 are used to fix the fixing plate 19. At this time, as for the return path guide rail 16, the engaging part 17a protrudes in the both outward of the direction orthogonal to the extending direction. In addition, the return path guide rail 16 and the fixing plate 19 are not provided at the place where the handrail driving device 10 is provided.

Further, on the outer periphery of the balustrade 9, an outward guide rail (not shown) having the same configuration as that of the return route guide rail 16 is extended with the base portion facing outward of the periphery of the balustrade 9.
Then, the moving handrail 22 travels while being guided by the forward path guide rail and the backward path guide rail 16.

  For example, when the moving handrail 22 traveling on the railing 9 is guided to the upper floor exit side along the outward guide rail, it is inverted by the upper floor side reversing portion 25a at the end of the railing 9 at the exit side. , Pulled inside the balustrade 9. When the handrail 22 traveling inside the balustrade 9 is guided to the entrance side along the return route guide rail 16, it is taken out again to the outside of the balustrade 9, and the lower floor side reversing portion of the entrance side end of the balustrade 9 Inverted at 25b.

Here, in the moving handrail 22, a portion that travels along the return path guide rail 16 is a return path handrail 23, and a portion that travels along the outbound path guide rail is an outbound path handrail.
The movable handrail 22 has a C-shaped cross section. For example, the return path handrail 23 accommodates the engaging portion 17a of the return path guide rail 16 in the ear portion 23a, and is slidably attached to the return path guide rail 16. At this time, since the groove portion 21 provided in the base 17 and the return path handrail 23 are not in contact with each other, the return path handrail 23 slides while only in contact with the engagement portion 17a accommodated in the inner wall surface 26 of the ear portion. Is done.

  Although not shown, the forward moving handrail is also slidably attached to the forward guide rail with the engaging portion of the forward guide rail accommodated in the ear portion thereof.

  Each of the return path handrails 23 on one side and the other side is sandwiched between the driving roller 11 and the pressure roller 12 so as to be pressed from both the front and back surfaces at the location where the handrail driving device 10 is disposed. When the drive motor 7 of the drive device 6 is driven, the first movable handrail chain 15a and the second movable handrail chain 15b are rotated and the drive roller 11 is rotated. The return path handrail 23 that is sandwiched and pressed between the driving roller 11 and the pressure roller 12 is rotated in synchronization with the step 5 by the frictional force with the driving roller 11.

Here, the lubricant application device 27A for the moving handrail of the escalator includes a lubricant application means 28A, a lubricant application control panel 29, a handrail speed sensor unit 30, a step speed sensor unit 33, and a lubricant 60.
The lubricant application means 28A is disposed in a space in which the return path guide rail 16 near the middle between the upper floor and the lower floor is cut out by a predetermined interval. Further, the handrail speed sensor unit 30 is disposed in the vicinity of the upper floor side in the extending direction of the return path guide rail 16 of the lubricant application means 28A. Further, the step speed sensor unit 33 is connected to the rotation shaft of the drive motor 7 of the drive device 6. A lubricant application control panel 29 is disposed adjacent to the escalator control panel 8.

  As shown in FIG. 4, the handrail speed sensor unit 30 includes a handrail speed detection roller 31, a speed detection unit 32, and a shaft bar 34. A shaft bar 34 is passed through the shaft center of the handrail speed detection roller 31 in a press-fit state. The shaft bar 34 is disposed in a direction that is orthogonal to the traveling direction of the return path handrail 23 and that is horizontal. The handrail speed detection roller 31 is disposed so as to sandwich the return path handrail 23 between the return path guide rail 16 and press the return path handrail 23 toward the return path guide rail 16. The handrail speed detection roller 31 is rotated by the frictional force with the return path moving handrail 23 when the moving handrail 22 travels. Then, the shaft bar 34 is rotated in synchronization with the rotation of the handrail speed detection roller 31. Although not shown in detail, the handrail speed detection roller 31 is supported by bearings (not shown) attached to both ends of the shaft bar 34. The bearing is fixedly supported on the truss by a holding metal (not shown).

  The speed detection unit 32 includes a pulse disc 35, an LED 36 as a light emitting element, and a PD 37 (Photo Diode) as a light receiving element. In the pulse disc 35, a slit portion (not shown) is radially radiated in the radial direction of the pulse disc 35 so as to periodically have a portion that transmits light emitted from the LED 36 and a portion that blocks light. Has been.

In addition, a shaft bar 34 is inserted into the center of the pulse disc 35 in a press-fit state, and the pulse disc 35 is rotated in synchronization with the handrail speed detection roller 31.
The light emitted from the LED 36 passes through the slit portion of the rotating pulse disk 35. The intensity of light transmitted through the pulse disk 35 varies in a pulse shape according to the rotation of the pulse disk 35, and the light pulse reaches the PD 37. The PD 37 outputs a pulsed electric signal (detection signal) corresponding to the light pulse.

  Further, the step speed sensor unit 33 is configured similarly to the speed detection unit 32 of the handrail speed sensor unit 30 as shown in FIG. A rotation shaft 38 of the drive motor 7 of the drive device 6 passes through the center of the pulse disk 35 in a press-fitted state, and the pulse disk 35 is rotated in synchronization with the rotation of the drive motor 7.

  As shown in FIGS. 2 and 3, the lubricant application means 28 </ b> A includes a bolt rotation drive unit 40 as a power generation means having a bolt rotation motor 54 and a control means 55, a rotation bolt 41, a bearing 42, and a guide rod 43. Power transmission means having a moving nut 44, lubricant contacting / separating means having a rotating portion 52a provided with a lubricant 60, a push spring 48 and a return spring 49, a support 39, a start switch 45, and a stop switch. 46, a first stopper 50 and a second stopper 51 are provided.

The support 39 is supported by the truss via the arm portion 53 so as to be positioned above the return path moving handrail 23.
The control means 55 can receive a control signal from the outside. The rotation of the bolt rotation motor 54 is controlled by the control means 55 based on an external control signal.
One end side of the rotating bolt 41 is fixed coaxially to the rotating shaft of the bolt rotating motor 54, and the rotating bolt 41 is rotated in conjunction with the rotation of the bolt rotating motor 54. Further, the rotating bolt 41 is disposed so that the other end thereof faces the opening of the cross-sectional C shape of the return path handrail 23 and its axial direction is orthogonal to the bottom of the cross section C shape of the return path handrail 23. Has been.

  Further, a moving nut 44 is screwed onto the rotating bolt 41, and the moving nut 44 is adjusted so as to be disposed near the middle of the rotating bolt 41. And the bearing 42 is each attached to the both-ends vicinity of the rotation volt | bolt 41 so that the axial shift of the rotation volt | bolt 41 may not be. The bearing 42 is indirectly fixed to the support body 39 via a holding metal fitting (not shown) protruding from the support body 39.

  Further, the first through hole 56 is formed through the flange portion 44 a of the moving nut 44 in the axial direction. One end side of the guide rod 43 is inserted into the first through hole 56, and the other end is bent and fixed to the support body 39. As a result, the moving nut 44 is restricted from being rotated around the axis of the rotating bolt 41 when the rotating bolt 41 is rotated.

  In addition, a start switch 45 and a stop switch 46 are respectively disposed at a predetermined interval from the moving nut 44 so as to sandwich the upper and lower surfaces of the moving nut 44. The start switch 45 and the stop switch 46 are configured to output a contact signal (ON signal) when an object is contacted. As the start switch 45 and the stop switch 46, for example, a micro switch can be used.

  Further, a pair of columnar first stoppers 50 each having one end fixed to the support 39 are symmetric with respect to the axis of the rotating bolt 41 with the long side length direction parallel to the traveling direction of the return path handrail 23. The rotary bolts 41 are arranged at a predetermined distance from each other.

  In addition, a pair of columnar second stoppers 51 each having one end fixed to the support 39 are arranged such that the length direction of the long side is parallel to the length direction of the first stopper 50 and the axis of the rotating bolt 41. Symmetrically arranged at a predetermined distance from the rotating bolt 41. At this time, the predetermined distance from the rotating bolt 41 of the second stopper 51 is longer than the predetermined distance from the rotating bolt 41 of the first stopper 50.

  The rotating portion 52 a includes a support pin 47, a pair of rotating levers 57, nuts 58 a and 58 b, and a screw rod 59. Each rotating lever 57 is provided with nuts 58a and 58b and a screw rod 59. Each rotating lever 57 is formed by bending a thick long flat plate into an L shape having a long side portion 61 and a short side portion 62, and a second through hole 63 is formed at the corner of the L shape. Is formed.

  Also, one end of the pair of support pins 47 is fixed to the support 39, the long side length direction is parallel to the long side length direction of the first stopper 50, and with respect to the axis of the rotating bolt 41. Symmetrically, they are arranged at a predetermined distance from the rotating bolt 41. At this time, the support pin 47 is disposed above the first stopper 50 and the second stopper 51. The support pin 47 is disposed at a height between the return path moving handrail 23 and the moving nut 44.

  A support pin 47 is inserted through the second through hole 63. As a result, the rotation lever 57 is rotatable about the support pin 47 as an axis. Further, the pair of rotating levers 57 are arranged so that the tips of the respective short side portions 62 face each other. Further, the distal end of the long side portion 61 of the turning lever 57 is disposed toward the opening having a C-shaped cross section of the return path handrail 23, and the long side portion 61 includes the first stopper 50 and the second stopper. 51. Thereby, the rotation of the rotation lever 57 is limited between the first stopper 50 and the second stopper 51.

  A third through hole (not shown) is formed on the distal end side of the long side portion 61 in parallel with the length direction of the short side portion 62, and the screw rod 59 is inserted into the third through hole. Yes. The nuts 58a and 58b are screwed together from both ends of the screw rod 59, and sandwich the long side portion 61 therebetween. A lubricant 60 is attached to the nut 58b with an adhesive or the like. At this time, the lubricant 60 is arranged at a position facing the ear inner wall surface 26 of the return path handrail 23. As the lubricant 60, for example, paraffin, which is a solid oily raw material separated and refined from a petroleum fraction, can be used.

In addition, the lubricant 60 disposed to face the inner wall surface 26 of the ear can be brought into contact with and separated from the inner wall surface 26 of the ear by rotation of the rotation lever 57. Further, when the rotation lever 57 comes into contact with the first stopper 50, the lubricant 60 is in a position away from the ear inner wall surface 26, and before the lubricant 60 comes into contact with the second stopper 51, It is adapted to contact the inner wall surface 26 of the ear. Further, even if the lubricant 60 is worn, the rotation of the rotation lever 57 and the nut 58 b is restricted by the second stopper 51 so that it does not collide with the return path handrail 23.
The start switch 45 is disposed at a position where the moving nut 44 comes into contact with the lubricant 60 substantially simultaneously with the contact with the inner wall surface 26 of the ear. The stop switch 46 is arranged so that the moving nut 44 is brought into contact when the lubricant 60 is completely separated from the inner wall surface 26 of the ear portion.

  Further, the return spring 49 is disposed with its both ends fixed to the opposing wall surfaces of the opposing long side portions 61 of the pair of rotating levers 57. At this time, the tension is acting on the return spring 49 in the direction in which the opposed long side portions 61 of the rotating lever 57 are attracted to each other. A push spring 48 is disposed with its both ends fixed to the upper portion of the short side portion 62 of the rotating lever and the lower surface of the moving nut 44. At this time, the pressing spring 48 presses the rotating lever 57 with a force smaller than the tension of the return spring 49. In this case, as shown in FIG. 2, the rotation lever 57 is brought into contact with the first stopper 50 by the tension of the return spring 49, and the lubricant 60 is separated from the inner wall surface 26 of the ear portion.

Here, the operation in which the lubricant 60 contacts and separates from the ear inner wall surface 26 will be described.
When the bolt rotating motor 54 is operated and the rotating bolt 41 is rotated, the moving nut 44 tries to rotate around the axis of the rotating bolt 41, but the rotational force is limited to the guide rod 43. Then, the force for rotating the moving nut 44 around the axis of the rotating bolt 41 is converted into a force for moving the moving nut 44 in the vertical direction along the axis of the rotating bolt 41. Thereby, the moving nut 44 is moved in the vertical direction along the axis of the rotating bolt 41 when the rotating bolt 41 is rotated. Whether the moving nut 44 moves in the vertical direction along the axis of the rotating bolt 41 is determined by the rotating direction of the rotating bolt 41.

  Then, when the rotary bolt 41 is rotated from the state shown in FIG. 2 and the moving nut 44 is moved to the return path moving handrail 23 side by a predetermined distance, the pressing force of the pressing spring 48 becomes larger than the tension of the return spring 49. It has become. As a result, the tip of the short side portion 62 of the turning lever 57 is pressed and urged by the pressing spring 48, and the tip of the long side portion 61 is turned in the direction in contact with the inner wall surface 26 of the ear, as shown in FIG. Further, the lubricant 60 presses the inner wall surface 26 of the ear part.

  When the rotating bolt 41 is rotated in the reverse direction, the moving nut 44 is moved to the repetitive path moving handrail side, and the tension of the return spring 49 becomes larger than the pressing force of the pressing spring 48 again. Each of the tips on the return path moving handrail 23 side attracts each other, so that the lubricant 60 is separated from the inner wall surface 26 of the ear and returns to the state shown in FIG. Here, the rotation direction of the rotating bolt 41 that moves the moving nut 44 toward the return path moving handrail 23 is defined as the contact direction, and the rotation direction of the rotating bolt 41 that moves the moving nut 44 toward the repeated path moving handrail is defined as the separation direction. .

  The lubricant application control panel 29 includes a CPU 64 as an arithmetic control means, a RAM (not shown), a counter 65, a ROM (not shown) in which a program is written, and the like. Data processing can be performed. The counter 65 can arbitrarily start counting under the control of the CPU 64, and the CPU 64 can read the information of the counter 65.

Next, the electrical connection and control of each component of the moving handrail lubricant application device 27A will be described with reference to FIG. FIG. 6 shows only the configuration that contributes electrically.
The PD 37 of the handrail speed sensor unit 30 and the step speed sensor unit 33 and the lubricant application control panel 29 are connected. Further, the start switch 45, the stop switch 46, and each of the control means 55 of the bolt rotation drive unit 40 in the lubricant application means 28A and the lubricant application control panel 29 are connected. Further, the bolt rotation motor 54 and the control means 55 are connected. Further, the escalator control panel 8 and the lubricant application control panel 29 are connected.

The detection signals from the handrail speed sensor unit 30 and the step speed sensor unit 33 are received by the lubricant application control panel 29, and the CPU 64 detects the pulse disks 35 of the handrail speed sensor unit 30 and the step speed sensor unit 33, respectively. Calculate the rotation speed.
Further, the rotation speed of the pulse disc 35 of the handrail speed sensor unit 30 is the same as the speed of the handrail speed detection roller 31 rotated in synchronization with the moving handrail 22, and the rotation speed of the pulse disc 35 is the moving handrail. It is converted into a running speed of 22. The rotational speed of the pulse disk 35 of the step speed sensor unit 33 is the same as the rotational speed of the drive motor 7, and the rotational speed of the pulse disk 35 is rotated by using the torque of the drive motor 7 as power. It is converted into the traveling speed of the step 5.
The CPU 64 calculates a slip ratio from the traveling speed of the moving handrail 22 and the step 5.

  Here, the frictional resistance between the return path guide rail 16 and the ear inner wall surface 26 increases when the lubricant 60 is depleted from the ear inner wall surface 26 of the return path moving handrail 23. Similarly, the frictional resistance between the outward guide rail and the inner wall surface of the ear portion increases as the lubricant 60 is depleted from the inner wall surface of the ear portion of the outward moving handrail. Therefore, the traveling speed of the moving handrail 22 becomes slower than the traveling speed of the step 5 when the lubricant 60 is depleted from the inner wall surface 26 of the ear part of the return path handrail 23 and the inner wall surface of the ear part of the outward path handrail. The slip ratio is defined as representing a delay in the traveling speed of the moving handrail 22 with respect to the traveling speed of the step 5. For example, when the slip rate is 0%, it means that the moving handrail 22 and the step 5 are running completely in synchronization, and when the slip rate is 10%, the traveling speed of the moving handrail 22 is 10 times the traveling speed of the step 5. % Is late.

  Further, when the slip ratio is 1% or more, the CPU 64 of the lubricant application control panel 29 causes the control means 55 to rotate the bolt rotating motor 54 in the direction in which the rotating bolt 41 is moved in the contact direction. A signal is transmitted.

  When the moving nut 44 moves to the return path handrail 23 side and comes into contact with the start switch 45, a contact signal (ON signal) is output from the start switch 45 and received by the lubricant application control panel 29. . Then, the CPU 64 transmits a control signal (stop signal) for stopping the bolt rotating motor 54 to the control means 55 and simultaneously starts counting of the counter 65, and maintains the current state for a predetermined time, for example, 3 minutes. It is like that. That is, when the moving nut 44 contacts the start switch 45, the rotation of the rotating bolt 41 is stopped almost simultaneously, and the lubricant 60 is pressed against the inner wall surface 26 of the ear portion of the return path moving handrail 23. During the time, the lubricant 60 is continuously and stably applied to the inner wall surface 26 of the ear.

  When the CPU 64 determines that the count of the counter 65 has elapsed for 3 minutes, the CPU 64 transmits a control signal for rotating the bolt rotating motor 54 in the direction away from the rotating bolt 41 to the control means 55, and moves the moving nut 44 to the rotating bolt 41. It moves to the repetitive path moving handrail side.

Further, when the moving nut 44 contacts the stop switch 46, an ON signal is output from the stop switch 46, and the ON signal of the stop switch 46 is received by the lubricant application control panel 29. Then, the CPU 64 transmits a control signal for stopping the rotation of the bolt rotating motor 54, that is, the rotation of the rotating bolt 41 to the control means 55 to stop the rotation of the rotating bolt 41.
Further, the travel start signal and travel stop signal of the step 5 transmitted from the escalator control panel 8 can be received by the lubricant application control panel 29.

Next, an operation flow of the lubricant applicator 27A for moving handrails of the escalator configured as described above will be described with reference to FIG.
In FIG. 7, steps 101 to 111 are denoted as S101 to S111 for convenience.
Here, in an initial state, the moving nut 44 is in contact with the stop switch 46, the turning lever 57 is brought into contact with the first stopper 50 due to the tension of the return spring 49, and the lubricant 60 is supplied to the return path moving handrail 23. It is assumed that it is separated from the inner wall surface 26 of the ear.

The CPU 64 of the lubricant application control panel 29 determines whether or not a travel start signal has been received from the escalator control panel 8 (step 101).
When the CPU 64 determines in step 101 that a travel signal has been received, it receives detection signals from the handrail speed sensor unit 30 and the step speed sensor unit 33, and calculates a slip ratio (step 102).

If it is determined in step 101 that the CPU 64 has not received the travel start signal, the current state is maintained until the travel start signal is received.
The CPU 64 determines whether or not the slip ratio calculated in step 102 is 1% or more (step 103).

If the CPU 64 determines in step 103 that the slip rate is not 1% or more, the counter 65 starts counting, and after a predetermined time such as 10 minutes (step 109), the process proceeds to step 110.
If the CPU 64 determines in step 103 that the slip ratio is 1% or more, the bolt rotating motor 54 is operated to bring the lubricant 60 into contact with the inner wall surface 26 of the ear portion of the return path handrail 23 (step 104).

  The CPU 64 starts counting of the counter 65, stops the operation of the bolt rotating motor 54, and stops the rotation of the rotating bolt 41 (step 105).

Then, the CPU 64 determines whether or not the count has elapsed for 3 minutes (step 106).
If the CPU 64 determines that 3 minutes have not elapsed, the current state is maintained.
When the CPU 64 determines in step 106 that the count of the counter 65 has elapsed for 3 minutes, the bolt rotating motor 54 is operated to move the lubricant 60 away from the inner wall surface 26 of the ear (step 107).

Next, when the lubricant application control panel 29 receives an ON signal from the stop switch 46, the CPU 64 transmits a stop signal for the bolt rotation motor 54 to stop the rotation of the rotating bolt 41 (step 108). Proceed to 110.
Next, the CPU 64 determines whether or not a travel stop signal for the step 5 has been received from the escalator control panel 8 (step 110).

If the CPU 64 determines that the travel stop signal for the step 5 has been received, the process returns to step 101.
If the CPU 64 determines in step 110 that the travel stop signal for the step 5 has not been received, the counter 65 starts counting and waits for a predetermined time such as 10 minutes (step 111) and returns to step 102. .

  In the first embodiment, the lubricant applying means 28A is disposed at a site where the return path guide rail 16 is cut, and the lubricant 60 attached to the rotating lever 57 is connected to the inner wall surface 26 of the ear portion of the return path moving handrail 23. Opposed to each other. Then, the rotational force of the rotating bolt 41 rotated in conjunction with the bolt rotating motor 54 is converted into a direction in which the moving nut 44 is moved in the vertical direction along the axis of the rotating bolt 41. Furthermore, the lubricant 60 can be brought into contact with and separated from the inner wall surface 26 of the ear portion of the return path handrail 23 when the rotation lever 57 is rotated by the pressing biasing force of the pressing spring 48. Further, the lubricant application control panel 29 calculates a slip rate based on detection signals from the handrail speed sensor unit 30 and the step speed sensor unit 33, and if the slip rate is a predetermined value (1%) or more, lubrication is performed. Control is performed such that the agent 60 is pressed against the inner wall surface 26 of the ear portion of the return path handrail 23 for a predetermined time (3 minutes). Further, the lubricant application control panel 29 performs control so that the lubricant 60 is separated from the inner wall surface 26 after a predetermined time has elapsed.

  Therefore, according to the first embodiment, the friction resistance between the moving handrail 22 and the forward guide rail or the backward guide rail 16 increases, and the ear of the return moving handrail 23 is only when the slip ratio becomes a predetermined value or more. An appropriate amount of lubricant 60 is automatically applied to the inner wall surface 26. Therefore, since the lubricant 60 is not worn unnecessarily, it is not necessary to replenish the lubricant 60 over a long period of time, and the replacement maintenance of the lubricant 60 is not required frequently. In addition, since the lubricant 60 is not excessively applied to the moving handrail 22, the traveling of the moving handrail 22 can be performed stably. Moreover, since the lubricant 60 can be elastically pressed against the inner wall surface 26 of the ear portion of the return path handrail 23 by using the push spring 48, the possibility of damaging the return path handrail 23 is reduced. Further, since the rotation of the rotation lever 57 is limited by the second stopper 51, the nut 58b of the rotation portion 52a contacts the return path moving handrail 23 even when the lubricant 60 is worn away. Thus, damage can be prevented.

Embodiment 2. FIG.
FIG. 8 is a cross-sectional view showing the configuration of the lubricant application means in a state where the lubricant is separated from the inner wall surface of the ear part of the moving handrail in the moving handrail lubricant applying apparatus according to Embodiment 2 of the present invention. FIG. 9 is a cross-sectional view showing a state in which the inner wall surface of the ear part of the moving handrail is pressed by the lubricant in FIG. 8.

8 and 9, the lubricant application unit 28B includes a plunger driving unit 67 as a power generation unit, a plunger 66 as a power transmission unit, and a rotation unit 52b.
The plunger drive unit 67 includes a power source 68, a casing 69, an excitation coil 70, a return spring 71, and an electric wire 72. The exciting coil 70 is formed in a cylindrical shape by winding a copper wire or the like covered with an insulating material. The power source 68 is disposed, for example, in the vicinity of the above-described lubricant application control panel 29, and the power source 68 and the exciting coil 70 are connected by an electric wire 72.

  A hole (not shown) smaller than the inner diameter of the exciting coil 70 is formed at the bottom of the casing 69, and the exciting coil 70 aligns the center of the opening on one end side with the center of the hole. Are arranged. The columnar plunger 66 is disposed with one end projecting outward from the hole of the housing 69 and the other end inserted into the exciting coil 70. One end of the return spring 71 is fixed to the end surface on the other end side of the plunger 66, and the other end of the return spring is fixed to the upper inner wall surface of the housing 69. That is, the plunger 66 is held in the exciting coil 70 by the tension of the return spring 71, and the plunger 66 can move in the axial direction of the exciting coil 70.

The plunger 66 is arranged so that the tip on the other end side faces the opening of the cross-sectional C shape of the return path handrail 23 and the axial direction thereof is orthogonal to the bottom of the cross section C shape of the return path handrail 23. It is installed.
The rotating part 52 b includes a pair of rotating levers 57, washers 75 a and 75 b, a support rod 73 and a cushion spring 74.
Each of the rotation levers 57 is disposed with the front end portion of the short side portion 62 facing each other. At this time, the respective distal end portions of the short side portions 62 are disposed immediately below the distal end on the one end side of the plunger 66, and are disposed with a gap shorter than the diameter of the plunger 66.
A fourth through hole (not shown) is formed at the tip of each long side portion 61, and the washer 75a is long by matching the opening of the fourth through hole facing the opening of the washer 75a. It is fixed to the side part 61.

One end of the support rod 73 is inserted into the washer 75a and the fourth through hole, and the support rod 73 is supported by the washer 75a and the long side portion 61.
One end of each of the two cushion springs 74 is fixed to the other side of the washer 75b having the lubricant 60 fixed to one side.

And in the long side part 61, the other end of the cushion spring 74 is adhering to each upper and lower sides of the opening part on the opposite side to the opening part which opposes. Further, one end of the support rod 73 is inserted through the washer 75 b and further inserted into the lubricant 60 in a loosely fitted state. Thereby, the lubricant 60 is supported by the support rod 73.
At this time, the support rod 73 is not fixed to the lubricant 60, and the other end of the long side portion 61 is obtained when the tip of the long side portion 61 of the turning lever 57 is turned to the inner wall surface 26 side. The side is guided by the support rod 73, and the lubricant 60 is elastically brought into contact with the inner wall surface 26 of the ear by the cushion spring 74.

Further, the pair of support pins 47, the pair of first stoppers 50, and the pair of second stoppers 51 are disposed at a predetermined distance from the plunger 66 symmetrically with respect to the axis of the plunger 66, and the arrangement relationship thereof. Is the same as in the first embodiment. Further, the start switch 45 and the stop switch 46 are omitted.
Other configurations are the same as those in the first embodiment.

Next, the operation in which the lubricant 60 contacts and separates from the ear inner wall surface 26 will be described.
First, in a state where no current flows through the exciting coil 70, the plunger 66 is separated from the rotation lever 57, and the rotation lever 57 is brought into contact with the first stopper 50 by the tension of the return spring 49. The lubricant 60 is separated from the inner wall surface 26 of the ear portion of the return path handrail 23. At this time, the lubricant 60 is kept in a state of being separated from the inner wall surface 26 of the ear without receiving a pulling force or a pressing force by the cushion spring 74.

  When a voltage is applied to the exciting coil 70 from the power source 68 and a current flows, the electrical energy is converted into linear energy that moves the plunger 66 in the axial direction, and the plunger 66 is attracted in the direction of the return path handrail 23. Moved. Here, the tension of the return spring 71 is adjusted in advance so as to be smaller than the force of attracting the plunger 66. When the tip of the short side 62 of the rotating lever 57 is pressed against the tip of the other end of the plunger 66 and the pressing force is greater than the tension of the return spring 49, the tip of the long side 61 is within the ear. It is rotated in a direction in contact with the wall surface 26.

  Then, as shown in FIG. 9, the lubricant 60 is brought into contact with the inner wall surface 26 of the ear part. When the long side portion 61 is further rotated, the lubricant 60 elastically presses the inner wall surface 26 of the ear portion by the cushion spring 74, and finally the long side portion 61 is brought into contact with the second stopper 51 to rotate. Stopped. At this time, the impact caused by the contact of the lubricant 60 with the ear inner wall surface 26 is absorbed by the cushion spring 74, and a large load is prevented from being applied to the ear inner wall surface 26. Further, the second stopper 51 is disposed at a position where the support rod 73 does not collide even when the lubricant 60 is worn.

  Further, when the current flowing through the exciting coil 70 is interrupted, the force for attracting the plunger 66 disappears, and the plunger 66 moves in the repetitive path moving handrail direction due to the tension of the return spring 71 and separates from the short side portion 62. Is done. At this time, the lubricant 60 is separated from the inner wall surface 26 by the tension of the return spring 49 and returned to the state shown in FIG.

Next, electrical connection and control in each configuration of the lubricant applicator 27B for the moving handrail of the escalator will be described with reference to FIG.
The lubricant application control panel 29 and the power source 68 in the plunger driving unit 67 of the lubricant application means 28B are connected. The power supply 68 can be turned on and off by the CPU 64 of the lubricant application control panel 29. Further, a power source 68 is connected to the exciting coil 70.
The electrical connection in each configuration of the other moving handrail lubricant application device 27B is the same as in the first embodiment.

As in the first embodiment, the CPU 64 calculates the slip rate from the traveling speed of the moving handrail 22 and the step 5.
Further, when the slip ratio is 1% or more, the CPU 64 of the lubricant application control panel 29 switches the power source 68 to ON so that the power source 68 and the exciting coil 70 are electrically connected. At the same time, the CPU 64 starts counting by the counter 65.

Then, the CPU 64 is configured to maintain the current state for a predetermined time, for example, 3 minutes. Here, since the plunger 66 moves quickly, when a current flows through the exciting coil 70, the lubricant 60 comes into contact with the inner wall surface 26 of the ear portion of the return path handrail 23 and is pressed with a slight time lag. Therefore, the lubricant 60 is continuously applied to the inner wall 26 of the ear during most of the predetermined time (3 minutes).
When the CPU 64 determines that the count has elapsed for 3 minutes, it turns off the power supply 68 and cuts off the current flowing through the exciting coil 70.

Next, an operation flow of the lubricant conveyor device 27B for the moving handrail of the man conveyor configured as described above will be described with reference to FIG.
In FIG. 11, steps 201 to 209 are denoted as S201 to S209 for convenience.
In FIG. 11, Step 201 to Step 203 and Step 207 to Step 209 are the same as Step 101 to Step 103 and Step 109 to Step 111 in FIG.
Here, in the initial state, no current is passed through the exciting coil 70, and the plunger 66 does not press the tip of the short side portion 62 of the rotating lever 57. In other words, the rotation lever 57 is brought into contact with the first stopper 50 by the tension of the return spring 49, and the lubricant 60 is separated from the inner wall surface 26 of the ear portion of the return path moving handrail 23.

If the CPU 64 determines in step 203 that the slip rate is not 1% or more, the process proceeds to step 209 following step 207.
When the CPU 64 determines in step 203 that the slip ratio is 1% or more, the counter 65 starts counting, and a current is passed through the exciting coil 70 to bring the lubricant 60 into contact with the inner wall surface 26 of the ear part of the return path handrail 23. (Step 204).

Then, the CPU 64 determines whether or not the count has elapsed for 3 minutes (step 205).
If the CPU 64 determines that 3 minutes have not elapsed, the current state is maintained.
When the CPU 64 determines in step 205 that the count of the counter 65 has elapsed for 3 minutes, the current of the exciting coil 70 is cut off and the lubricant 60 is separated from the inner wall surface 26 of the ear (step 206).

  Next, the CPU 64 determines whether or not a travel stop signal for the step 5 has been received from the escalator control panel 8 (step 208).

If the CPU 64 determines that the travel stop signal for the step 5 has been received, the process returns to step 201.
If the CPU 64 determines in step 208 that the travel stop signal for step 5 has not been received, the process returns to step 202 following step 209.

In the second embodiment, in the plunger driving unit 67 in the lubricant applying unit 28B, when a voltage is applied to the exciting coil 70 from the power source 68, the electric energy is converted into energy for moving the plunger 66 in the axial direction. . As a result, the plunger 66 is sucked and moved toward the return path handrail 23, and the turning lever 57 is pressed by the plunger 66. Then, the lubricant 60 is pressed against the inner wall surface 26 of the ear portion of the return path handrail 23 when the rotation lever 57 is rotated. Further, the lubricant 60 is separated from the ear inner wall surface 26 by the return spring 71 when the current to the exciting coil 70 is interrupted.
Therefore, according to the second embodiment, the same effect as in the first embodiment can be obtained.

In each embodiment, it has been described that the lubricant 60 is applied to the inner wall surface 26 of the ear portion of the return path handrail 23 when the slip ratio is 1% or more. However, the slip ratio and the application time of the lubricant 60 are described. Are not limited to 1% and 3 minutes, respectively. The slip ratio is appropriately set in consideration of the specifications of the escalator, and the application time of the lubricant 60 is appropriately set in consideration of the appropriate amount of the lubricant 60 being applied to the inner wall surface 26 from the entire length of the moving handrail 22 and the like. That's fine.
Further, although the escalator control panel 8 and the lubricant application control panel 29 have been described as being separately disposed, the escalator control panel 8 and the lubricant application control panel 29 may be integrally disposed.

  In addition, the lubricant 60 is attached integrally with the rotation lever 57, and the rotation lever 57 is rotated to press the inner wall surface 26 of the return path moving handrail 23. The structure for pressing the inner wall surface 26 is not limited to this, and the lubricant 60 arranged facing the inner ear wall surface 26 can move in a direction in which it is in contact with and away from the inner ear wall surface 26. Any material that can press the lubricant 60 against the inner wall surface 26 of the ear may be used.

  Further, the escalator 1 is described as an example of the man conveyor, but the present invention can also be applied to a man conveyor such as a moving sidewalk.

It is a schematic diagram for demonstrating the structure of an escalator provided with the lubricant coating device for moving handrails which concerns on Embodiment 1 of this invention. It is II-II arrow sectional drawing of FIG. In FIG. 2, it is sectional drawing which shows the state in which the inner wall surface of the ear | edge part of a moving handrail was pressed by the lubricant. FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 1. It is a VV arrow sectional view of Drawing 1. It is a block diagram which shows the electrical connection of an escalator provided with the lubricant coating device for moving handrails which concerns on Embodiment 1 of this invention. It is an operation | movement flowchart of the lubrication applicator for moving handrails which concerns on Embodiment 1 of this invention. It is sectional drawing of the lubricant coating apparatus for moving handrails which concerns on Embodiment 2 of this invention. In FIG. 8, it is sectional drawing which shows the state in which the inner wall surface of the ear | edge part of a moving handrail was pressed by the lubricant. It is a block diagram which shows the electrical connection of an escalator provided with the lubricant coating device for moving handrails which concerns on Embodiment 2 of this invention. It is an operation | movement flowchart of the lubrication applicator for moving handrails which concerns on Embodiment 2 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Escalator (man conveyor), 2 Escalator main-body part (man conveyor main-body part), 5 steps, 9 railings, 22 moving handrail, 27A, 27B Lubricant application apparatus for moving handrail, 28A, 28B Lubricant application means, 29 Lubricant Application control panel, 30 handrail speed sensor section, 33 step speed sensor section, 60 lubricant, 64 CPU (calculation control means), 65 counter.

Claims (2)

It is guided to the edge of the balustrade that stands upright above the man conveyor main body of the man conveyor, travels to the exit side, reverses at the end of the exit side, and the inside of the lower part of the balustrade to the entrance side Lubricant for moving handrails of a man conveyor for traveling, reversing at the edge of the entrance and being guided to the periphery of the balustrade and applying lubricant to an endless moving handrail that is driven in synchronization with the steps A coating device,
A step speed sensor for detecting the travel speed of the step,
A handrail speed sensor for detecting the traveling speed of the moving handrail;
The lubricant that is disposed facing the inner wall surface of the ear part of the moving handrail that runs inside the lower part of the balustrade and that is movable in a direction that can be moved toward and away from the inner wall surface of the ear part,
Lubricant application means for contacting and separating the lubricant from the inner wall surface of the ear,
The travel speed of the moving handrail and the travel speed of the step are calculated based on detection signals from the handrail speed sensor unit and the step speed sensor unit, and the lubricant is added to the ear portion based on the result of comparison between the two. A lubricant application control panel having arithmetic control means for operating the lubricant application means so as to contact and separate from the wall surface;
A lubricant applicator for a moving handrail of a man conveyor, comprising: A start switch capable of transmitting a contact signal at the same time that the lubricant contacts the inner wall surface of the ear;
A counter disposed on the lubricant application control panel,
The arithmetic control means operates the counter when receiving the contact signal, and operates the lubricant application means so as to separate the lubricant from the inner wall surface of the ear after a predetermined time has elapsed. The lubricant application device for a moving handrail of a man conveyor according to claim 1.

Images