JP2015027906A - Passenger conveyor brake device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor brake device in which a lining is hardly shifted and peeled after actuation of a brake device.SOLUTION: A connection part 70 for holding a rotary body 52 via a pair of linings 72, 74 and connecting the rotary body 52 to a sprocket 20 comprises: annular first frame 76 and second frame 78 fixed to the sprocket 20 and holding the linings 72, 74; plural fixing bolts 80 disposed inside of a radial direction of a position where the pair of linings 72, 74 hold the rotary body 52 in a peripheral direction with intervals and for fixing the second frame 78 to the first frame 76; and plural inner peripheral linings 84 contacting at least one of the first frame 76 and second frame 78 and an inner peripheral surface 52a of the rotary body 52. The plural inner peripheral linings 84 are disposed between the first frame 76 and second frame 78 in the peripheral direction with intervals.

Description

  Embodiments described herein relate generally to a brake device for a passenger conveyor.

  An escalator which is an example of a passenger conveyor has two sprockets arranged on the same axial center on the upper floor side and the lower floor side of the installation structure on which the escalator is installed, and is located in parallel between these sprockets. A chain of books is hung. Both ends of a plurality of steps are connected to the two step chains.

  A driving unit such as a motor is disposed on either the upper floor side or the lower floor side, and the driving force from the driving unit is transmitted to the sprocket via the driving force transmission chain, so that the sprocket is rotationally driven. When the sprocket is driven to rotate, the step chain spanned between this sprocket and other sprockets circulates, and the user on the step moves from the lower floor to the upper floor or from the upper floor. To the lower floor.

  In such an escalator, in the unlikely event that the drive force transmission chain breaks, the weight of the user riding on the step prevents the step and the step chain from running away to the lower floor side. In some cases, a brake device for a passenger conveyor for preventing the rotation of the sprocket is provided.

  When detecting that the driving force transmission chain is broken, the brake device moves the movable piece based on the detection result, and engages the moved movable piece with the tooth portion of the rotating body rotating together with the sprocket. Is preventing the rotation of. By preventing the sprocket from rotating, the step chain that is spanned between this sprocket and another sprocket is prevented from circulating, and the step chain and the step may run out toward the lower floor. Be blocked.

  In the brake device as described above, when the movable piece is engaged with the tooth portion of the rotating body, the sprocket connected to the rotating body is suddenly braked, and the step chain and the step stop suddenly. If this happens, the user on the step may fall.

  Therefore, by holding the rotating body slidably with the pair of frames fixed to the sprocket via the lining, the movable piece engages with the tooth portion and a large braking force is applied to the rotating body. There has been proposed a brake device that prevents a step chain and a step from suddenly stopping by relatively sliding a body and a pair of frames fixed to a sprocket (for example, see Patent Document 1 below).

JP-A-63-315483

  However, in the passenger conveyor brake device as described above, when the lining is fixed to the frame by bonding, the adhesive force of the adhesive is reduced due to frictional heat generated when the brake device is operated, so the lining is displaced after the brake device is operated. There is a problem that it becomes easy to peel off.

  In the passenger conveyor brake device as described above, the rotating body is provided in an annular shape having a through hole, and the annular protrusion provided in the frame is fitted in the through hole of the rotating body. If the inner peripheral surface of the frame and the annular projection on the frame are in direct sliding contact with each other, seizure may occur, so an annular inner peripheral lining is provided between the inner peripheral surface of the rotating body and the annular projection on the frame. However, when the annular inner peripheral lining is provided, there is a problem that the lining is likely to be displaced or peeled after the brake device is operated.

  If the lining is displaced or peeled after the brake device is activated, the brake device cannot be used unless the lining is replaced. It needs to be replaced.

  Accordingly, an object of the present invention is to provide a passenger conveyor brake device in which the lining is less likely to be displaced or peeled after the brake device is operated.

  The brake system for a passenger conveyor according to the embodiment is connected to a sprocket over which an endless step chain that circulates and is connected to a step, rotates together with the sprocket, and has an annular shape having a plurality of engaging portions around a rotation center. A rotating body, an engaging body that is movably provided at an engaging position that engages with the engaging portion, and a retracted position that avoids engagement with the engaging portion, and circulation movement of the step chain Detecting means for detecting an abnormal state; moving means for moving the engagement body from the retracted position to the engagement position based on a detection result by the detection means; and sandwiching the rotating body via a pair of linings. A connecting portion for connecting the rotating body to the sprocket, the connecting portion being fixed to the sprocket and holding an annular first frame and the other lining. An annular second frame for holding the ring, a plurality of fixing bolts for fixing the second frame to the first frame, at least one of the first frame and the second frame, and an inner periphery of the rotating body A plurality of inner circumferential linings that are in contact with the surface, and the plurality of inner circumferential linings are disposed between the first frame and the second frame at intervals in the circumferential direction. .

It is a side view which shows the outline of the whole structure of the escalator which has a brake device of the passenger conveyor which concerns on one Embodiment of this invention. It is a fragmentary sectional view which shows the structure of the upper floor side in which the brake device is provided in the passenger conveyor shown in FIG. It is a top view which shows the brake device concerning one Embodiment of this invention. It is a figure which expands and shows the principal part of FIG. It is a top view which shows the state which removed the 2nd flame | frame of the brake device concerning one Embodiment of this invention. It is a block diagram which shows the control structure of the brake device concerning one Embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The passenger conveyor brake device 50 according to an embodiment of the present invention is provided, for example, on an escalator that is installed to be inclined across the upper and lower floors of a building. As shown in FIG. 1, the passenger conveyor 10 circulates and moves a number of steps 12 between an upper floor entrance and a lower floor entrance and exits passengers on the step 12. It is transported across the floor and the lower floor.

  A large number of steps 12 are connected by an endless step chain 14 and are arranged in a main frame 16 called a truss installed under the floor of the building. A pair of balustrades 30 are erected on both sides of the upper portion of the main frame 16 along the moving direction of the step 12, and a belt-shaped moving handrail 32 is mounted around the balustrade 30.

  On the upper floor side of the main frame 16, a rotating shaft 18, a pair of sprockets 20 (shown as 20 a and 20 b as necessary) connected to the rotating shaft 18, a drive motor and a speed reducer are provided. A driving device 22 is arranged. A rotating shaft 24 and a pair of sprockets 26 connected to the rotating shaft 24 are disposed on the lower floor side inside the main frame 16.

  A step chain 14 is bridged between the sprocket 20 on the upper floor side and the sprocket 26 on the lower floor side, and the step chain 14 moves between the sprockets 20 and 26 as the sprockets 20 and 26 rotate. The step 12 circulates and moves together with the step chain 14.

  As shown in FIG. 2, both ends of the rotating shaft 18 are supported by bearings 28, and the bearings 28 are attached to the main frame 16. A pair of attachment portions 17 and 19 located on both ends of the rotating shaft 18 are fixed to the outer peripheral surface of the rotating shaft 18 by welding.

  One sprocket 20a is detachably fixed to one attachment portion 17 by bolting. The sprocket 20a is divided into a main body 20aa having a tooth portion that meshes with the step chain 14, and a base 20ab that is provided in a ring shape and is fixed by bolting, and the main body 20aa and the base 20ab are divided. It is fixed by bolting. A rotating body 52 constituting a part of the brake device 50 is detachably fixed to the sprocket 20a via a connecting body 70 by bolting.

  The other sprocket 20b is detachably fixed to the other mounting portion 19 by bolting. Like the sprocket 20a, the sprocket 20b is divided into a main body portion 20ba having a tooth portion that meshes with the step chain 14 and a base 20bb provided in a ring shape, and the main body portion 20ba and the base 20bb are fixed by bolting. Has been. A driving sprocket 34 is detachably fixed to the sprocket 20b by bolting.

  A driving force transmission chain 40 is spanned between the driving sprocket 34 and the sprocket 25 fixed to the driving shaft 23 of the driving device 22, and is provided to be rotatable integrally with the rotating shaft 18.

  As shown in FIGS. 3 to 5, the brake device 50 provided in the passenger conveyor 10 described above includes a rotating body 52 that rotates together with the sprocket 20 a, a connecting body 70 that is fixed to the sprocket 20 a by bolting, and a rotating body 52. An engaging body 56 that engages with the body 52, a moving means 58 that moves the engaging body 56 between a retracted position and an engaging position, which will be described later, and a detecting means 60 that detects an abnormality in the circulating movement state of the step chain 14. Is provided.

  Specifically, the rotating body 52 is a ring-shaped plate-like member provided with a through hole in a central portion made of a metal material such as a steel material (for example, SS400), and the sprocket 20a with the rotation shaft 18 as a rotation center. They are arranged concentrically. A plurality of engaging portions 62 are formed around the rotation center on the outer peripheral surface of the rotating body 52. That is, the plurality of engaging portions 62 are formed at intervals in the circumferential direction of the rotating body 52, and are formed on the same circumference around the rotating shaft 18.

  The connecting body 70 sandwiches the rotating body 52 via a pair of linings 72, 74 and connects the rotating body 52 to the sprocket 25. The connecting body 70 holds a pair of linings 72, 74 and one lining 72. One frame 76, a second frame 78 holding the other lining 74, a plurality of fixing bolts 80 for fixing the second frame 78 to the first frame 76, and protruding from the second frame 78 toward the first frame 76. And a plurality of inner peripheral linings 84 that contact the first frame 76 and the inner peripheral surface 52a of the rotating body 52.

  The first frame 76 is an annular plate-shaped member made of a metal material such as a steel material, and is arranged concentrically with the sprocket 20a around the rotation shaft 18 and fixed to the base 20ab of the sprocket 20a by detachable bolting. Has been.

  As shown in FIGS. 4 and 5, the first frame 76 has an annular protrusion 86 protruding toward the second frame 78 on the surface facing the second frame 78, and a radial direction from the peripheral surface of the protrusion 86. An annular flange portion 88 projecting outward R1 is provided, and the outer peripheral portion of the first frame 76 has a step shape that is recessed in a direction away from the second frame 78. In the first frame 76, a protrusion 86 is fitted in a through hole provided in the rotating body 52 with a gap S therebetween, and the outer peripheral surface 86 a of the protrusion 86 faces the inner peripheral surface 52 a of the rotating body 52, and the flange portion 88 faces the side surface 52b of the rotating body 52.

  The flange portion 88 of the first frame 76 is provided with a second recess 98 that is recessed in a direction away from the second frame 78 on the surface facing the second frame 78. As shown in FIG. 5, a plurality of (in the present embodiment, four) second recesses 98 are provided at intervals in the circumferential direction, and a lining 72 that contacts the side surface 52 b of the rotating body 52 is fitted therein. Yes. In other words, the first frame 76 is provided with a plurality of linings 72 at intervals in the circumferential direction, and each lining 72 is fitted into the second recess 98 and contacts the bottom surface and the inner peripheral wall of the second recess 98. ing.

  The lining 72 is made of a metal material different from the material constituting the rotating body 52, for example, a metal material such as copper or an alloy containing copper, and has an arc shape matching the shape of the second recess 98 provided in the flange portion 88. These plate-like members are bonded and fixed to the bottom surfaces of the plurality of second recesses 98 with an adhesive. The lining 72 has a thickness dimension larger than the depth dimension of the second recess 98, and protrudes from the second recess 98 toward the second frame 78 in a state of being bonded and fixed to the second recess 98. .

  When the protrusion 86 is set so that the protrusion amount from the lining 72 provided on the flange 88 is smaller than the thickness of the rotating body 52 and is fitted into the through-hole provided in the rotating body 52 as described above, The rotating body 52 protrudes from the protrusion 86 toward the second frame 78.

  On the outer peripheral surface of the protrusion 86 (opposite surface facing the inner peripheral surface 52a of the rotator 52 in the protrusion 86) 86a, a plurality of concave portions 90 recessed inward in the radial direction are spaced apart in the circumferential direction (for example, 8 in this example). The recess 90 opens to the facing surface 86 a of the protrusion 86, and also opens to the side surface 86 b of the protrusion 86 facing the second frame 78, and an inner peripheral lining 84 is provided in the recess 90.

  The inner peripheral lining 84 is a columnar member made of a metal material different from the material constituting the rotating body 52, for example, a metal material such as copper or an alloy containing copper, and is provided on the side surface 86b of the protrusion 86. The first frame 76 and the second frame 78 are inserted in the opposite direction (corresponding to the axial direction of the rotary shaft 24) through the opening, and the plurality of inner peripheral linings 84 are spaced apart in the circumferential direction from the first frame 76. And the second frame 78.

  As shown in FIG. 5, the inner peripheral lining 84 provided in the recess 90 in this way is directed from the opening 90 a of the recess 90 provided in the facing surface 86 a of the protrusion 86 toward the inner peripheral surface 82 a of the rotating body 52. (That is, radially outward R1) and the circumferential surface of the cylindrical inner circumferential lining 84 contacts the inner circumferential surface 52a of the rotating body 52. Accordingly, the plurality of inner peripheral linings 84 support the inner peripheral surface 82a of the rotating body 52 while maintaining the gap S between the protrusions 86 of the first frame 76.

  The inner peripheral lining 84 is provided in the recess 90 and has a gap between the inner wall of the recess 90 and is rotatable around an axis parallel to the direction in which the first frame 76 and the second frame 78 face each other. It is provided in the recess 90.

  Further, the diameter D of the cylindrical inner circumferential lining 84 is larger than the length L along the circumferential direction of the opening 90 a of the concave portion 90 provided on the facing surface 86 a of the protrusion 86, and the inner circumferential lining 84 has the concave portion 90. It is provided so as not to escape from the opening 90a radially outward (see FIG. 5).

  The second frame 78 is an annular plate-shaped member made of a metal material such as a steel material, and is arranged concentrically with the sprocket 20a about the rotation shaft 18 as a rotation center, and is a bolt provided on the protrusion 86 of the first frame 76. It is detachably fixed to the first frame 76 by a fixing bolt 80 screwed into the hole 87.

  The second frame 78 is provided with a second recess 99 that is recessed in a direction away from the first frame 78 on the surface facing the first frame 76. As shown in FIG. 3, a plurality (four in this embodiment) of second recesses 99 are provided at intervals in the circumferential direction, and a lining 74 that contacts the side surface 52c of the rotating body 52 is fitted therein. Yes.

  This lining 74 is the same as the lining 72 provided on the first frame 76, and is made of a metal material different from the material constituting the rotating body 52, for example, a metal material such as copper or an alloy containing copper, and the second An arc-shaped plate-like member that matches the shape of the second recess 99 provided in the frame 76, and is bonded and fixed to the bottom surfaces of the plurality of second recesses 98 with an adhesive. In other words, the second frame 78 is provided with a plurality of linings 74 spaced apart in the circumferential direction, and each lining 74 fits into the second recess 99 and contacts the bottom surface and the inner peripheral wall of the second recess 99. ing. The lining 74 has a thickness dimension larger than the depth dimension of the second recess 99, and protrudes from the second recess 99 toward the first frame 76 in a state of being bonded and fixed to the second recess 99. .

  A plurality of fixing bolts 80 are provided in the radial direction inward R2 from the position where the pair of linings 72, 74 sandwich the side surfaces 52b, 52c of the rotating body 52, and the first frame 76 and the second frame In a state where the rotating body 52 is disposed between the second frame 78 and the second frame 78, the second frame 78 is inserted into the insertion hole 79, and is screwed into the bolt hole 87 provided in the first frame 76. Accordingly, the second frame 78 is fixed to the first frame 76 so as to sandwich the side surfaces 52b and 52c of the rotating body 52 via the pair of linings 72 and 74 between the second frame 78 and the rotating body 52. Is connected to the sprocket 20a and rotates together with the sprocket 20a.

  A plurality of (e.g., two) disc springs 92 are interposed between the bolt head portion 80a of the fixing bolt 80 and the second frame 78. By adjusting the tightening amount of the fixing bolt 80, a desired amount can be obtained. The second frame 78 is detachably connected to the first frame 76 by the tightening force. A collar 94 is provided between the bolt shaft portion 80 b of the fixing bolt 80 and the plurality of disc springs 92 to prevent positional deviation of the plurality of disc springs 92.

  The support portion 82 includes a support bolt 82 a that is screwed into a bolt hole 96 provided in the second frame 78, and a fixing nut 82 b that is screwed to the support bolt 82 a, and the second frame 78 is fixed to the first frame 76. A plurality of fixing bolts 80 are arranged radially inwardly at intervals in the circumferential direction. In the present embodiment, the support portion 82 is arranged side by side with the fixing bolt 80 in the radial direction of the rotating body 52.

  The support bolt 82a is screwed into the bolt hole 96 from the outside of the second frame 78, and can change the protruding amount protruding forward and backward in the axial direction from the second frame 78 toward the first frame 76. The amount of protrusion is adjusted so that the front end thereof contacts the side surface 86b of the protrusion 86 of the first frame 76. A fixing nut 82b is screwed to the tip of the support bolt 82a, and the support bolt 82a is fixed to the second frame 78 by preventing the support bolt 82a from inadvertently moving back and forth in the axial direction.

  The engaging body 56 is installed at a position facing the engaging portion 62 of the rotating body 52. The engaging body 56 is rotatably provided with the support shaft 64 as a fulcrum, and rotates between an engagement position indicated by an imaginary line and a retracted position indicated by a solid line in FIG. The engagement position indicated by the phantom line is a position where the engagement body 56 is engaged with the engagement portion 62, and the rotation of the rotating body 52 in the direction of arrow B is restricted by this engagement. The retracted position indicated by the solid line is a position where the engagement between the engaging body 56 and the engaging portion 62 is avoided, and the rotating body 52 is rotatable without being restricted by the engaging body 56.

  The engaging body 56 is provided with a moving means 58 that rotates the engaging body 56 to move between the retracted position and the engaging position, and a tension spring that urges the engaging body 56 in a direction to hold the engaging body 56 in the retracted position. A force body (not shown) is connected.

  The moving unit 58 includes, for example, a solenoid, is normally turned off and is turned off, and the engaging body 56 is held at the retracted position by the biasing force of the biasing body. Further, when an abnormality described later occurs, the solenoid is energized and turned on, and the moving means 58 rotates the engagement body 56 to the engagement position indicated by the phantom line against the biasing force of the biasing body.

  The detecting means 60 detects an abnormality in the circulating movement state of the step chain 14, for example, means for detecting that the driving force transmission chain 40 is broken, and that the moving speed of the step 12 is in an overspeed state. It comprises known means for detecting abnormalities in the circulating movement state of the step chain 14 such as means for detecting and means for detecting that the moving direction of the step 12 has been reversed. When the detecting means 60 detects an abnormality in the circulating movement state of the step chain 14, a driving signal is output from the control unit 66 to the moving means 58, so that the moving means 58 is turned on (see FIG. 6).

  In such a configuration, when the driving device 22 is driven and controlled, the passenger conveyor 10 rotates the driving shaft 23 of the driving device 22 and the sprocket 25 fixed thereto. The rotation of the sprocket 25 is transmitted to the driving sprocket 34 via the driving force transmission chain 40, and the driving sprocket 34 rotates. As the drive sprocket 34 rotates, the sprockets 20a and 20b and the rotary shaft 18 rotate together with the drive sprocket 34. As the sprockets 20a and 20b rotate, the driving force is transmitted to the step chain 14 meshing with the sprockets 20a and 20b, and a number of steps 12 connected by the step chain 14 are guided upward by guide rails (not shown). Cycle between the floor entrance and exit and the lower floor entrance.

  During the operation of the passenger conveyor 10 in which a large number of steps 12 circulate between the upper floor entrance and the lower floor entrance as described above, the detection means 60 is abnormal in the circulating movement state of the step chain 14. Whether or not has occurred is detected. When the detecting means 60 does not detect an abnormality in the circulating movement state of the step chain 14, the moving means 58 is positioned in the off state, and the engaging body 56 is positioned at the retracted position indicated by a solid line in FIG. For this reason, the step chain 14 and the step 12 circulate and move without being restricted by the engaging body 56.

  When the detection means 60 detects an abnormality in the circulating movement state of the step chain 14, an abnormality detection signal is input from the detection means 60 to the control unit 66, and the brake device 50 is activated. That is, when an abnormality detection signal is input to the control unit 66, a control signal is output from the control unit 66 to the moving unit 58, and the moving unit 58 is turned on. Thereby, the engaging body 56 rotates from the retracted position indicated by the solid line shown in FIG. 3 to the engaging position indicated by the two-dot chain line, and is engaged with the engaging portion 62 of the rotating body 52.

  When the engaging body 56 is engaged with the engaging portion 62 of the rotating body 52, the rotation of the rotating body 52 is restricted, and a force that restricts the rotation acts on the sprocket 20 a connected to the rotating body 52.

  In the brake device 50 of the present embodiment, the rotating body 52 and the sprocket 20a are connected by sandwiching the side surfaces 52b and 52c of the rotating body 52 by a pair of linings 72 and 74 provided on the connecting body 70. Therefore, the sprocket 20a continues to rotate against the frictional force generated between the linings 72 and 74 and the side surfaces 52b and 52c of the rotating body 52 due to the inertial force, and the rotation does not stop immediately with the rotating body 52. That is, the connecting body 70 fixed to the sprocket 20a is rotated for a while even when the rotation of the rotating body 52 is stopped by the engaging body 56 as the brake device 50 is operated, and the connecting body 70 and the rotating body 52 are rotated. And rotate relative to each other. During this rotational movement, the circumferential surface of the inner circumferential lining 84 provided on the first frame 76 of the coupling body 70 slides on the inner circumferential surface 52 a of the rotating body 52.

  The sprocket 20a is decelerated (braking) by sliding friction between the linings 72 and 74 and the rotating body 52, and then stops. As the sprocket 20a stops, the circulating movement of the step chain 14 and the step 12 is stopped.

  As described above, in the passenger conveyor brake device 50 according to the present embodiment, when the detecting unit 60 detects an abnormality in the circulating movement state of the step chain 14, the rotation of the rotating body 52 is restricted by the engaging body 56, thereby causing the step chain to be controlled. 14 and the step 12 can be stopped and the step chain 14 and the step 12 can be prevented from running out of control toward the lower floor.

  Further, in the brake device 50 of the present embodiment, the connecting body 70 connects the sprocket 20a and the rotating body 52 by sandwiching the side surfaces 52b and 52c of the rotating body 52 via the linings 72 and 74. When the rotation of the rotating body 52 is restricted by the combined body 56, the sprocket 20 a rotates while being decelerated by the sliding friction generated between the linings 72 and 74 and the rotating body 52 without immediately stopping the rotation. Therefore, even if the brake device 50 is operated, the step chain 14 and the step 12 can be gently stopped without suddenly stopping, and the occurrence of an accident that a passenger riding on the step 12 falls is prevented. Can do.

  Further, in the brake device 50 of the present embodiment, the inner peripheral lining 84 provided so as to be in contact between the protrusion 86 of the first frame 76 and the inner peripheral surface 82a of the rotating body 52 is spaced apart in the circumferential direction. Since it is provided open, it is less likely to be displaced or peeled even when the brake device 50 is operated, compared to the case where the inner peripheral lining is provided in an annular shape.

  Specifically, when the inner peripheral lining is provided in an annular shape, a gap for inserting the protrusion 86 into the inner peripheral lining exists between the inner peripheral lining and the protrusion 86 of the first frame 76. Therefore, when the brake device 50 is activated and the inner peripheral lining provided on the first frame 76 slides on the inner peripheral surface 52a of the rotating body 52, the inner peripheral lining starts from the gap between the protrusion 86 and the inner peripheral lining. Is pushed in the circumferential direction, and the inner circumferential lining is deformed so that it undulates between the protrusion 86 of the first frame 76 and the inner circumferential surface 52a of the rotating body 52, and the inner circumferential lining tends to be displaced or peeled off.

  On the other hand, in this embodiment, since the inner peripheral lining 84 is provided at intervals in the circumferential direction, the brake device 50 is activated and the inner peripheral lining 84 slides on the inner peripheral surface 52a of the rotating body 52. In addition, the inner circumferential lining 84 is not deformed so as to wave between the protrusion 86 of the first frame 76 and the inner circumferential surface 52a of the rotating body 52, and displacement and peeling of the inner circumferential lining 84 can be suppressed. . Therefore, even after the brake device 50 is operated, the inner circumferential lining 84 can be used repeatedly without replacement.

  Further, in this embodiment, since the inner peripheral lining 84 is housed in the recess 90 that opens to the facing surface 86a of the protrusion 86 of the first frame 76, the brake device 50 operates and the inner part of the rotating body 52 is Even if the peripheral surface 52a is slid, the inner peripheral lining 84 is not displaced in the circumferential direction.

  In addition, the inner peripheral lining 84 is provided in the recess 90 so as to be rotatable around an axis parallel to the opposing direction of the first frame 76 and the second frame 78, and the brake device 50 is operated to operate the rotating body 52. When the inner peripheral surface 52a is slid, the inner peripheral lining 84 rotates in the recess 90, so that wear of the inner peripheral lining 84 due to sliding with the inner peripheral surface 52a of the rotating body 52 can be suppressed.

  Further, in the brake device 50 of the present embodiment, the inner peripheral lining 84 is provided in a columnar shape, and is inserted in a direction in which the first frame 76 and the second frame 78 face each other through an opening provided in the side surface 86b of the protrusion 86. As a result, the inner lining 84 is easily disposed on the peripheral surface of the protrusion 86 of the first frame 76 during assembly, and the assembly workability is excellent.

  In the brake device 50 of the present embodiment, the diameter D of the inner circumferential lining 84 is larger than the length L along the circumferential direction of the opening 90a of the recess 90 provided in the facing surface 86a of the protrusion 86. The circumferential lining 84 does not come out radially outward from the opening 90 a of the recess 90.

  Furthermore, in the brake device 50 of this embodiment, since the linings 72 and 74 are bonded and fixed to the first frame 76 and the second frame 78 with an adhesive, the mounting is easier than when fixing with screws or the like. In addition, the linings 72 and 74 can be made thinner.

  In addition, when an adhesive is used to fix the linings 72 and 74 to the first frame 76 and the second frame 78, the adhesive force of the adhesive may be reduced due to frictional heat generated when the brake device 50 is operated. In the present embodiment, the linings 72 and 74 are fitted into a plurality of second recesses 98 and 99 provided in the first frame 76 and the second frame 78 at intervals in the circumferential direction. Since the movement of the linings 72 and 74 in the circumferential direction and the radial direction is restricted by the inner peripheral wall 99, the linings 72 and 74 do not shift even if the adhesive strength of the adhesive is reduced.

  In the present embodiment, the case where the inner peripheral lining 84 is provided in the concave portion 90 provided in the protrusion 86 of the first frame 76 has been described. However, the concave portion provided with the inner peripheral lining 84 on the inner peripheral surface 52a of the rotating body 52 is described. It may be formed.

  In the present embodiment, the case where the protrusion 86 is provided on the first frame 76 has been described. However, the second frame 78 may be provided with a protrusion that protrudes toward the first frame 76, or the first frame 76 and the second frame 76. Protrusions may be provided on both of the frames 78, and recesses for accommodating the inner peripheral lining 84 may be provided on the protrusions.

  In the present embodiment, the case where the inner peripheral lining 84 is cylindrical has been described. However, the present invention is not limited to this, and may be, for example, spherical or sheet-like, and the protrusion 86 of the first frame 76. A concave portion having a shape matching the spherical or sheet-like inner peripheral lining may be formed in the inner portion, and the spherical or sheet-shaped inner peripheral lining may be accommodated in the concave portion.

  As mentioned above, although embodiment of this invention was described, these embodiment was shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof as well as included in the scope and gist of the invention.

DESCRIPTION OF SYMBOLS 10 ... Passenger conveyor, 18 ... Rotary shaft, 20 ... Sprocket, 20a ... Sprocket, 25 ... Sprocket, 50 ... Brake device, 52 ... Rotating body, 52a ... Inner peripheral surface, 56 ... Engagement body, 58 ... Moving means, 60 DESCRIPTION OF SYMBOLS ... Detection means, 62 ... Engagement part, 70 ... Connection body, 72 ... Lining, 74 ... Lining, 76 ... 1st frame, 78 ... 2nd frame, 79 ... Insertion hole, 80 ... Fixing bolt, 82 ... Support part, 82a ... support bolt, 82b ... fixing nut, 84 ... inner circumferential lining, 86 ... projection, 86a ... opposite surface, 86b ... side surface, 86c ... side surface, 90 ... recess, 90a ... recess opening, 92 ... disc spring, 94 ... collar, 98 ... second recess, 99 ... second recess

The brake system for a passenger conveyor according to the embodiment is connected to a sprocket over which an endless step chain that circulates and is connected to a step, rotates together with the sprocket, and has an annular shape having a plurality of engaging portions around a rotation center. A rotating body, an engaging body that is movably provided at an engaging position that engages with the engaging portion, and a retracted position that avoids engagement with the engaging portion, and circulation movement of the step chain Detecting means for detecting an abnormal state; moving means for moving the engagement body from the retracted position to the engagement position based on a detection result by the detection means; and sandwiching the rotating body via a pair of linings. A connecting portion for connecting the rotating body to the sprocket, the connecting portion being fixed to the sprocket and holding an annular first frame and the other lining. An annular second frame for holding the ring, a plurality of fixing bolts for fixing the second frame to the first frame, at least one of the first frame and the second frame, and an inner periphery of the rotating body and a plurality of inner peripheral lining in contact with the surface, the plurality of the inner peripheral lining said at intervals in the circumferential direction the first frame and is disposed between the second frame, the first frame and the At least one of the second frames protrudes toward the other and includes a protrusion having a facing surface facing the inner peripheral surface of the rotating body, the protrusion including a recess opening in the facing surface, the recess The inner circumferential lining protrudes from the opening of the concave portion provided on the facing surface toward the inner peripheral surface of the rotating body, and the first frame and the first rim are projected in the concave portion. And characterized by being rotatable about an axis parallel to the opposing directions of the frame.

Claims (9)

An annular rotating body connected to a sprocket over which an endless step chain that is connected and circulated with a step is connected and rotates together with the sprocket, and has a plurality of engaging portions around a rotation center;
An engagement body movably provided between an engagement position engaged with the engagement portion and a retracted position where engagement with the engagement portion is avoided;
Detecting means for detecting an abnormality in the circulating movement state of the step chain;
Moving means for moving the engagement body from the retracted position to the engagement position based on a detection result by the detection means;
A connecting portion that sandwiches the rotating body via a pair of linings and connects the rotating body to the sprocket;
The connecting portion includes an annular first frame that is fixed to the sprocket and holds one lining, an annular second frame that holds the other lining, and a plurality of frames that fix the second frame to the first frame. A fixing bolt, and a plurality of inner peripheral linings that contact at least one of the first frame and the second frame and an inner peripheral surface of the rotating body;
The brake device for a passenger conveyor, wherein the plurality of inner circumferential linings are disposed between the first frame and the second frame at intervals in the circumferential direction. At least one of the first frame and the second frame includes a protrusion that protrudes toward the other and has a facing surface that faces the inner peripheral surface of the rotating body,
The protrusion includes a recess opening in the opposing surface, and the inner circumferential lining is provided in the recess.
2. The passenger conveyor brake device according to claim 1, wherein the inner peripheral lining protrudes toward an inner peripheral surface of the rotating body from an opening of the concave portion provided in the facing surface.   3. The passenger conveyor according to claim 2, wherein the inner circumferential lining is rotatably provided around an axis parallel to a direction in which the first frame and the second frame are opposed to each other in the recess. Brake device.   4. The passenger according to claim 2, wherein the inner circumferential lining is provided in a columnar shape, and is inserted into the recess from a direction in which the first frame and the second frame are opposed to the recess. Conveyor brake device.   5. The inner circumferential lining is provided in a columnar shape, and is provided so as to be rotatable around an axis parallel to a direction in which the first frame and the second frame face each other in the recess. The passenger conveyor brake device described.   The brake device for a passenger conveyor according to claim 5, wherein a diameter of the inner peripheral lining is larger than a length along a circumferential direction of the opening of the concave portion provided in the facing surface.   The passenger conveyor brake device according to any one of claims 1 to 6, wherein three or more inner linings are provided.   The first frame and the second frame include a plurality of second recesses into which the lining is fitted with a circumferential interval, and the lining is fixed to the bottom surface of the second recess by adhesion. The passenger conveyor brake device according to any one of claims 1 to 7. An annular rotating body connected to a sprocket over which an endless step chain that is connected and circulated with a step is connected and rotates together with the sprocket, and has a plurality of engaging portions around a rotation center;
An engagement body movably provided between an engagement position engaged with the engagement portion and a retracted position where engagement with the engagement portion is avoided;
Detecting means for detecting an abnormality in the circulating movement state of the step chain;
Moving means for moving the engagement body from the retracted position to the engagement position based on a detection result by the detection means;
A connecting portion that sandwiches the rotating body via a pair of linings and connects the rotating body to the sprocket;
The connecting portion includes an annular first frame that is fixed to the sprocket and holds one lining, an annular second frame that holds the other lining, and a plurality of frames that fix the second frame to the first frame. With fixing bolts,
The first frame and the second frame include a plurality of second recesses into which the lining is fitted with a circumferential interval, and the lining is fixed to the bottom surface of the second recess by adhesion. The passenger conveyor brake device.

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