Reducer

Abstract

To provide a highly versatile reducer which reduces the cost of casting and modifying the reducer and reduces the costs of labor and work time required for installing the reducer. [Solution] An escalator reducer 117 is configured which comprises a housing 201 with a protrusion 702 protruding from a bottom surface 701a, a foot plate 204 which is separate from the housing 201 and has a through hole 402 for fitting the reducer in which the protrusion 702 can fit, and which is detachably connected to the housing 201, and a connecting mechanism which connects the housing 201 and the foot plate 204, and the foot plate 204 is provided with a truss mounting hole through which a fixing bolt can pass for fixing the reducer to a position corresponding to the structural body to be installed.

Description

[Technical field]

[0001] The present invention relates to a reducer that reduces the rotational speed of input power and outputs the reduced rotational speed. [Background technology]

[0002] An escalator uses the driving force of a motor to move the staircase-like steps up and down. The escalator is equipped with an escalator reducer (gearbox) that reduces the rotation speed of the motor to increase the output torque before transmitting it to the steps.

[0003] The escalator reducer includes a rotating shaft connected to the motor to receive the rotation of the motor, and an output shaft connected to the steps via a step chain. The escalator reducer transmits the rotation of the motor received by the rotating shaft to the output shaft via a gear train.

[0004] As related art, specifically, there has been a technology for an escalator reducer in which a motor is positioned so that the axial direction of the output shaft is parallel to the longitudinal direction of the escalator steps, the reduction mechanism of the reducer is constructed using a parallel shaft gear mechanism, the output shaft of the reducer is positioned parallel to the motor shaft of the motor, both ends of the output shaft of the reducer supported in a gear box of the reducer by a pair of output shaft bearings are made to protrude / extend outside the gear box, and a pair of sprockets for driving the escalator steps are directly assembled to the extended output shaft, thereby achieving low noise, low costs, and a reduction in the installation space required for the escalator reducer (for example, see Patent Document 1 below). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2002-053282 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, in conventional escalator reducers as described above, if the model of the escalator reducer is the same, the positions of the mounting holes in the casing, which is generally formed by casting, are uniform, which limits the escalators on which it can be installed, posing a problem of poor versatility when renovating escalator reducers.

[0007] In recent years, in order to reduce the time and cost required for renewal, it has become common to replace only some of the components of an escalator. In addition, the installation environments of the escalator reducers for escalators that are the subject of renewal vary widely depending on the design and manufacturing company and the design period.

[0008] On the other hand, as mentioned above, conventional escalator reducers are less versatile, so when renewing only an escalator reducer, it is necessary to either incur significant costs in creating a mold for the housing according to the structural frame of the escalator on which the escalator reducer is installed, or to create a mold for the housing or to modify the structural frame, resulting in problems such as costs in terms of labor, work time, and construction costs involved in installing the escalator reducer.

[0009] SUMMARY OF THE PRESENT DISCLOSURE In order to solve the above-mentioned problems associated with the conventional techniques, an object of the present invention is to provide a reducer capable of reducing the costs involved in casting modifications.

[0010] Another object of the present invention is to provide a versatile reducer that reduces costs, such as the labor and work time required for installation, in order to solve the problems associated with the conventional technology described above. [Means for solving the problem]

[0011] In order to solve the above-mentioned problems and achieve the object, the reducer of the present invention is a reducer that reduces the rotational speed of a motor equipped in a passenger conveyor, and comprises a housing for containing lubricating oil, a foot plate provided separately from the housing, a fitting mechanism composed of a protrusion provided on the housing or the foot plate and protruding toward the foot plate or the housing, and a recess or through hole provided on the foot plate or the housing and capable of fitting with the protrusion, and a connecting mechanism that connects the housing body and the foot plate, and is characterized in that the foot plate has a mounting hole at a position corresponding to the structural body on which the reducer is to be installed, through which a bolt used to fix the reducer can pass.

[0012] In addition, the reducer of the present invention is characterized in that, in the above invention, it is provided with an adjustment through hole that penetrates from the side of the foot plate to the inner wall surface of the recess or the through hole, and an adjustment screw that is screwed into the adjustment through hole.

[0013] In addition, the reducer of the present invention is characterized in that, in the above invention, it is provided with an adjustment through hole that penetrates from the side of the housing to the inner wall surface of the recess or the through hole, and an adjustment screw that is screwed into the adjustment through hole. Effect of the Invention

[0014] According to the reducer of the present invention, it is possible to reduce the cost of casting and modifying the reducer.

[0015] In addition, the reducer according to the present invention has the effect of reducing costs such as the labor and work time required for installing the reducer, and providing a highly versatile reducer. [Brief description of the drawings]

[0016] [Figure 1] 1 is an explanatory diagram showing an example of an escalator equipped with an escalator reducer realizing a reducer according to an embodiment of the present invention. FIG. [Diagram 2]FIG. 1 is an explanatory diagram (part 1) showing one example of the structure of an escalator reducer according to an embodiment of the present invention. [Diagram 3] FIG. 2 is an explanatory diagram (part 2) showing one example of the structure of an escalator reducer according to an embodiment of the present invention. [Figure 4] FIG. 4 is an explanatory diagram (part 3) showing one example of the structure of an escalator reducer according to an embodiment of the present invention. [Diagram 5] FIG. 4 is an explanatory diagram (part 4) showing an example of the structure of an escalator reducer according to an embodiment of the present invention. [Figure 6] FIG. 5 is an explanatory diagram (part 5) showing an example of the structure of an escalator reducer according to an embodiment of the present invention. [Figure 7] FIG. 1 is an explanatory diagram (part 1) showing an escalator reducer with the housing and the foot plate separated. [Figure 8] FIG. 2 is an explanatory diagram (part 2) showing the escalator reducer with the housing and the foot plate separated. [Figure 9] FIG. 3 is an explanatory diagram (part 3) showing the escalator reducer with the housing and the foot plate separated. [Figure 10] FIG. 1 is an explanatory diagram (part 1) showing an installation procedure of an escalator reducer according to an embodiment of the present invention. [Figure 11] FIG. 4 is an explanatory diagram (part 2) showing the installation procedure of the escalator reducer according to the embodiment of the present invention. [Figure 12] FIG. 11 is an explanatory diagram (part 3) showing the installation procedure of the escalator reducer according to the embodiment of the present invention. [Figure 13] 4 is a flowchart showing an installation procedure of the escalator reducer of the embodiment according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a reducer according to the present invention will be described in detail with reference to the accompanying drawings.

[0018] The passenger conveyor according to the present invention is realized by a device that uses power to transport people and goods. Specifically, the passenger conveyor according to the present invention can be realized, for example, by a device in which steps (footboards) move cyclically and rise and fall by the power of a motor. The steps may be composed of a plurality of steps, or may be composed of a series of belt-like members such as an endless belt, without being limited to being composed of a plurality of steps.

[0019] More specifically, the passenger conveyor according to the present invention can be realized by a device called, for example, an "escalator" that uses a motor to circulate and raise and lower a plurality of stair-shaped steps (footboards). Also, specifically, the passenger conveyor according to the present invention can be realized by a device called, for example, a "moving walkway" or "horizontal escalator" that uses a motor to circulate steps (belt-like members) that are arranged horizontally rather than in a stair-like manner. Also, specifically, the passenger conveyor according to the present invention can be realized by a device called, for example, an "autoslope" that uses a motor to circulate steps (belt-like members) that are arranged in a sloping state inclined relative to the horizontal direction.

[0020] In the following embodiment, an example will be described in which the reducer of the present invention is applied to a passenger conveyor, a so-called "escalator," which uses the power of a motor to move multiple steps (footboards) in a circulating manner to raise and lower the vehicle.

[0021] (An example of an escalator) First, an example of an escalator equipped with an escalator reducer that realizes the reducer of the embodiment according to the present invention will be described. Fig. 1 is an explanatory diagram showing an example of an escalator equipped with an escalator reducer that realizes the reducer of the embodiment according to the present invention.

[0022] As shown in Fig. 1, escalator 100 includes frame 101 installed on a skeleton (structural skeleton) not shown. Frame 101 is made of steel or the like. For example, in the case of escalator 100 installed between floors of different heights as shown in Fig. 1, frame 101 spans two floors, upper floor 102 and lower floor 103 (floor beams of each floor 102, 103).

[0023] The frame body 101 is composed of an upper portion 101a provided under the floor of an upper floor 102, a lower portion 101b provided under the floor of a lower floor 103, and a middle portion 101c provided between the upper portion 101a and the lower portion 101b. The middle portion 101c is provided in a state inclined at a predetermined angle between the upper portion 101a and the lower portion 101b. In this embodiment, the direction along the inclination of the middle portion 101c in the frame body (the arrangement direction of the upper portion 101a, the middle portion 101c, and the lower portion 101b) will be described as the "length direction", and the direction perpendicular to the length direction will be described as the "width direction".

[0024] In the frame 101, the upper portion 101a and the lower portion 101b are each configured as a machine room. In the machine room of the upper portion 101a, for example, a control panel that drives and controls each portion of the escalator 100, a drive mechanism including a motor 104 that is driven and controlled by the control panel and a drive sprocket 105 to which the power of the motor 104 is transmitted, and the like are disposed. In the machine room of the lower portion 101b, structures related to the operation of the escalator 100, such as a driven sprocket 106 and a mechanism for supporting the driven sprocket 106, are disposed.

[0025] An upper boarding and alighting plate 107 is provided on the upper end surface of the upper portion 101a, i.e., on the same surface as the floor surface of the upper floor 102. The upper boarding and alighting plate 107 closes the upper portion 101a (the machine room located below the floor surface of the upper floor 102) in an openable manner. A lower boarding and alighting plate 108 is provided on the upper end surface of the lower portion 101b, i.e., on the same surface as the floor surface of the lower floor 103. The lower boarding and alighting plate 108 closes the lower portion 101b (the machine room located below the floor surface of the lower floor 103) in an openable manner.

[0026] The upper and lower boards 107 and 108 are removed to open the machine rooms during maintenance of the escalator 100. In addition, the upper and lower boards 107 and 108 are used as passageways for users of the escalator 100 when the escalator 100 is in operation.

[0027] A balustrade 109 is provided on the upper side of the frame 101. The balustrade 109 can be made of, for example, tempered glass or stainless steel. An endless (loop) handrail (handrail belt) 110 is provided on the balustrade 109. The handrail 110 is provided so as to be slidable along the length of the escalator 100, along the end face of the balustrade 109.

[0028] The escalator 100 includes a plurality of steps 111. Each of the steps 111 includes a step 111a and a riser 111b. The step 111a is flat, and the riser 111b is gently curved. The dimensions of the step 111a and the riser 111b in the width direction are equal. The dimension of the step 111a in a direction perpendicular to the width direction (the step surface dimension of the step 111a) and the dimension of the riser 111b in a direction perpendicular to the width direction (the height dimension of the riser 111b) may be the same or different. The step 111a and the riser 111b are connected to each other along the width direction at one side, making the dimensions equal.

[0029] Each of the steps 111 includes a driving roller 112 and a driven roller 113. The driving roller 112 and the driven roller 113 are rotatably attached to a bracket 111c that is suspended between the tread 111a and the riser 111b. The bracket 111c connects the tread 111a and the riser 111b, ensuring the strength of the step 111. This makes it possible to support the load applied by users of the escalator 100, ensuring the safety of users.

[0030] The drive roller 112 and the driven roller 113 are provided at both ends in the width direction of the step 111. Of these, the drive roller 112 is provided at a position close to the end opposite the connection position between the step 111a and the riser 111b in the direction perpendicular to the width direction of the step. The driven roller 113 is provided at a position close to the end opposite the connection position between the step 111a and the riser 111b in the height direction of the riser 111b.

[0031] An endless drive roller guide rail 114 is provided on each of both sides in the width direction of the multiple steps 111. The drive rollers 112 are each provided so that their outer circumferential surfaces come into contact with the drive roller guide rail 114. Furthermore, an endless driven roller guide rail 115 is provided on each of both sides in the width direction of the multiple steps 111. The driven rollers 113 are each provided so that their outer circumferential surfaces come into contact with the driven roller guide rail 115.

[0032] The drive roller guide rail 114 and the driven roller guide rail 115 are disposed so as to trace different tracks. Moreover, the drive roller guide rail 114 and the driven roller guide rail 115 are disposed so that their tracks do not intersect.

[0033] The driving rollers 112 of each of the steps 111 are connected to an endless step chain 116. The step chain 116 is stretched across the driving sprocket 105 and the driven sprocket 106. The driving sprocket 105 and the driven sprocket 106 are fixed in position and rotate at fixed positions.

[0034] The driving sprocket 105 is connected to the output shaft of the escalator reducer 117 (see Figs. 2 to 4). The driving sprocket 105 rotates upon receiving driving torque transmitted from the motor 104 via the escalator reducer 117. As the driving sprocket 105 rotates, the step chain 116 rotates together with the driven sprocket 106 while being stretched between the driving sprocket 105 and the driven sprocket 106.

[0035] As the step chain 116 rotates, the drive roller 112 and the driven roller 113 rotate in contact with the drive roller guide rail 114 and the driven roller guide rail 115, respectively, and roll along the guide rails 114, 115. As a result, the multiple steps 111 move diagonally upward in the vertical direction or diagonally downward in the vertical direction as the step chain 116 rotates.

[0036] When the steps 111 move, the drive roller 114 and the driven roller 115 roll while in contact with the drive roller guide rail 114 and the driven roller guide rail 115, respectively, which allows the steps 111 to form steps, the steps 111 (treads 111a) to be flat, or each step 111 to be moved upside down.

[0037] The above-mentioned handrail 110 is circulated by the handrail drive device 118 in the same direction (length direction) as the movement direction of the multiple steps 111 in synchronization with the movement of the multiple steps 111. The handrail drive device 118 is connected to the drive sprocket 105 via a transmission mechanism such as a handrail chain or gears (not shown). As a result, the handrail 110 circulates in synchronization with the movement of the multiple steps 111 as the drive sprocket 105 rotates.

[0038] The handrail 110 moves in a circular motion in synchronization with the movement of the steps 111, allowing users of the escalator 100 to move while holding onto the handrail 110 and standing on the steps 111. The escalator 100 allows users to move while holding onto the handrail 110, ensuring the safety of the users.

[0039] (Structure of Escalator Reducer 117) Next, we will explain the structure of escalator reducer 117. Figures 2 to 6 are explanatory diagrams showing an example of the structure of escalator reducer 117 according to an embodiment of the present invention.

[0040] Fig. 2 shows an escalator reducer 117 according to an embodiment of the present invention as viewed from the side. Fig. 3 shows a view seen from the arrow A in Fig. 2. Fig. 4 shows a view seen from the arrow B in Fig. 2. Fig. 5 shows a view seen from the arrow C in Fig. 2. Fig. 6 shows a view seen from the arrow D in Fig. 5.

[0041] As shown in FIGS. 2 to 6, escalator reducer 117 includes housing 201. Housing 201 is hollow inside, and lubricating oil is stored in the hollow portion. An output shaft through hole and an input shaft through hole are provided in side surface 201a of housing 201. A brake shaft through hole is provided in side surface 201b of the housing. The output shaft through hole, the input shaft through hole, and the brake shaft through hole each penetrate side surface 201a or side surface 201b of housing 201.

[0042] Escalator reducer 117 includes output shaft 202, input shaft 203, and brake shaft 301. Output shaft 202, input shaft 203, and brake shaft 301 are all shaped like a rod (shaft). Output shaft 202 is provided in a state where it penetrates through an output shaft through hole so that one end side in the axial direction is located outside housing 201 and the other end side is located inside housing 201. An oil seal (not shown) is provided in the housing at the output shaft through hole. This prevents lubricating oil in housing 201 from leaking out of housing 201 through a gap between output shaft 202 and output shaft through hole.

[0043] A power output sprocket (not shown) is provided on a portion of output shaft 202 located outside housing 201. The power output sprocket rotates in conjunction with output shaft 202 around the axis of output shaft 202. The above-mentioned step chain 116 is stretched over the power output sprocket. This allows step chain 116 to rotate in conjunction with the rotation of output shaft 202.

[0044] In this embodiment, the input shaft 203 and the brake shaft 301 are integral. The input shaft 203 and the brake shaft 301 in this embodiment are realized by both ends of an integral shaft. The integral shaft is disposed so that both ends pass through an input shaft through hole and a brake shaft through hole provided on both side surfaces 201a and 201b of the housing 201, respectively. As a result, the input shaft 203 and the brake shaft 301 are each disposed so that one end side in the axial direction is located outside the housing 201.

[0045] An oil seal (not shown) is provided at the input shaft through hole of the housing 201. This prevents lubricating oil in the housing 201 from leaking out of the housing 201 through a gap between the input shaft 203 and the input shaft through hole. The input shaft 203 is provided at a portion located outside the housing 201 with a pulley (not shown) that rotates in conjunction with the input shaft 203 around the axis of the input shaft 203. An endless belt (endless belt) wound around the output shaft of the motor 104 described above is stretched over the pulley. This causes the input shaft 203 to rotate in conjunction with the rotation of the motor 104 (the output shaft of the motor 104).

[0046] The output shaft 202 is connected to an input shaft 203 (integral shaft) within the housing 201 via a gear train (not shown) provided within the housing 201. As a result, the rotation of the input shaft 203 is transmitted to the output shaft 202, and the output shaft 202 rotates in conjunction with the rotation of the input shaft 203. The rotation of the input shaft 203 is transmitted to the output shaft 202 via the gear train with the number of rotations (rotational speed) reduced and the torque increased. As a result, the steps 111 can be circulated using the driving force of the motor 104.

[0047] An oil seal (not shown) is provided at the brake shaft through hole in the housing 201. This prevents the lubricating oil in the housing 201 from leaking out of the housing 201 through a gap between the brake shaft 301 and the brake shaft through hole.

[0048] The brake shaft 301 is connected to a brake (not shown) on the outside of the housing 201. For example, an electromagnetic brake can be used as the brake. The electromagnetic brake controls the rotation of the brake shaft 301 (integral shaft) by using an electromagnetic force generated by energizing a coil. The electromagnetic brake may be, for example, an electromagnetic brake of an excitation operation type that operates when energized, or an electromagnetic brake of a non-excitation operation type that operates when not energized.

[0049] Escalator reducer 117 includes foot plate 204. Foot plate 204 can be formed, for example, using a steel plate or molded by casting. Foot plate 204 is provided with truss mounting holes 302 penetrating foot plate 204 in the plate thickness direction. A plurality of truss mounting holes 302 are provided in foot plate 204. When foot plate 204 is realized using a steel plate, truss mounting holes 302 can be provided, for example, by cutting (including hole (hole) drilling) or punching foot plate 204.

[0050] Truss mounting holes 302 are used to fix escalator reducer 117 to a structural frame. Truss mounting holes 302 are provided at positions corresponding to the structural frame to which escalator reducer 117 is to be fixed. Specifically, truss mounting holes 302 are provided at positions corresponding to bolt holes (holes) (not shown) provided in the structural frame. Also, specifically, the number of truss mounting holes 302 corresponds to the number of bolt holes provided in the structural frame. In this embodiment, truss mounting holes 302 can realize the "mounting holes through which bolts used to fix an escalator reducer can pass" according to the present invention.

[0051] In escalator reducer 117 according to the embodiment of the present invention, foot plate 204 is detachably connected to housing 201. Housing 201 and foot plate 204 are detachably connected to each other using, for example, bolts or screws such as hexagon socket bolts 401 (see FIGS. 7 to 9).

[0052] The foot plate 204 has a through hole 402 for fitting a reducer, which penetrates the foot plate 204 in the plate thickness direction. The through hole 402 for fitting a reducer has a substantially rectangular shape. The through hole 402 for fitting a reducer is provided in a substantially central portion of the foot plate 204. When the foot plate 204 is realized using a steel plate, the through hole 402 for fitting a reducer can be provided, for example, by cutting or punching the foot plate 204. In this embodiment, the through hole 402 for fitting a reducer can realize the "recess or through hole capable of engaging with a protrusion" according to the present invention.

[0053] Furthermore, foot plate 204 is provided with through holes 403 for hexagon socket bolts that penetrate foot plate 204 in the plate thickness direction. A plurality of through holes 403 for hexagon socket bolts are provided on the periphery of through hole 402 for fitting a reducer. When foot plate 204 is realized using a steel plate, through holes 403 for hexagon socket bolts can be provided by, for example, cutting (including drilling) or punching on foot plate 204.

[0054] A set screw through hole 206 is provided on the side of foot plate 204, into which an adjustment set screw 205 used to adjust the position of housing 201 relative to foot plate 204 is screwed. In this embodiment, adjustment set screw 205 realizes the adjustment screw according to the present invention, and set screw through hole 206 realizes the adjustment through hole according to the present invention.

[0055] Set screw through hole 206 penetrates in a direction perpendicular to the outer side surface (hereinafter referred to as "side end surface" as appropriate) of foot plate 204. Furthermore, foot plate 204 is formed so that the side end surface is parallel to the vertical direction when escalator 100 is installed. As a result, the rotation axis of adjustment set screw 205 is perpendicular to the surface direction of the side end surface.

[0056] Setscrew through holes 206 are provided on each of two opposing surfaces of foot plate 204 along the axial direction of output shaft 202, input shaft 203, and brake shaft 301. In escalator reducer 117 of this embodiment, setscrew through holes 206 are provided two on each of the two opposing surfaces.

[0057] (Configuration of the housing 201 and the foot plate 204) Next, a description will be given of the configuration of housing 201 and foot board 204. Figures 7 to 9 are explanatory diagrams showing escalator reducer 117 with housing 201 and foot board 204 separated from each other.

[0058] Fig. 7 shows escalator reducer 117 seen from the side with housing 201 and foot plate 204 separated. Fig. 8 shows a view seen from the direction of arrow C in Fig. 7. Fig. 9 shows a view seen from the direction of arrow D in Fig. 8. In Figs. 7 to 9, parts of escalator reducer 117 that cannot be seen externally are indicated by dotted lines.

[0059] 7 to 9, the housing 201 and the foot plate 204 are separate bodies and can be separated from each other. The housing 201 is composed of a housing main body 701 and a protruding portion 702. The housing main body 701 and the protruding portion 702 are integrally molded by casting.

[0060] The housing body 701 has a generally rectangular parallelepiped shape with a hollow inside, and the hollow portion accommodates the output shaft 202, the input shaft 203, the brake shaft 301, the gear train, lubricating oil, etc. The protruding portion 702 protrudes from a bottom surface 701a of the housing body 701 in a direction away from the bottom surface 701a. The protruding amount of the protruding portion 702 from the bottom surface 701a of the housing body 701 (the height dimension from the bottom surface of the housing body 701 to the tip 702a of the protruding portion 702) is smaller than the plate thickness dimension of the foot plate 204.

[0061] The outer diameter dimension of the protruding portion 702 is smaller than the inner diameter dimension of the through hole 402 for fitting the reducer. This allows the protruding portion 702 to be fitted into the through hole 402 for fitting the reducer. It is preferable that the shape of the protruding portion 702 is approximately rectangular, similar to the shape of the through hole 402 for fitting the reducer.

[0062] Moreover, it is preferable that the outer diameter dimension of the protruding portion 702 is slightly smaller than the inner diameter dimension of the through hole 402 for fitting the reducer. This makes it possible to effectively suppress rattling between the housing 201 and the foot plate 204 when the protruding portion 702 is fitted into the through hole 402 for fitting the reducer.

[0063] A plurality of hexagon socket bolt screw holes 703 are provided on the bottom surface 701a of the housing main body 701 at positions facing the hexagon socket bolt through hole 403 when the protruding portion 702 is fitted into the reducer fitting through hole 402. A female thread is provided on the inner peripheral surface of the hexagon socket bolt screw hole 703. The hexagon socket bolt screw hole 703 is provided such that the sum of the depth dimension of the hexagon socket bolt screw hole 703 and the axial length dimension of the hexagon socket bolt through hole 403 (plate thickness dimension of the foot plate 204) is longer than the axial dimension of the hexagon socket bolt 401.

[0064] The inner diameter of hexagon socket bolt through hole 403 is larger than the outer diameter of the head of hexagon socket bolt 401 at least at a depth equal to or greater than the thickness of the head of hexagon socket bolt 401 from the underside of foot plate 204. This prevents the head of hexagon socket bolt 401 from protruding below the underside of foot plate 204 when the tip of hexagon socket bolt 401 is screwed into the hexagon socket bolt fixing hole.

[0065] The set screw through hole 206 penetrates from the side surface of the foot plate 204 to the periphery of the reducer fitting through hole 402. A female thread is provided on the inner peripheral surface of the set screw through hole 206. The female thread on the inner peripheral surface of the set screw through hole 206 is provided at least in a predetermined range on the periphery side of the reducer fitting through hole 402 in the set screw through hole 206. This allows the tip of the adjustment set screw 205 to reliably abut against the protrusion 702. The adjustment set screw 205 can be a headless set screw, such as a hexagon socket set screw.

[0066] (Installation procedure for escalator reducer 117) Next, a procedure for installing escalator reducer 117 according to an embodiment of the present invention will be described. Fig. 10 to Fig. 12 are explanatory diagrams showing the procedure for installing escalator reducer 117 according to an embodiment of the present invention. Fig. 13 is a flowchart showing the procedure for installing escalator reducer 117 according to an embodiment of the present invention.

[0067] 10 to 12 and 13, when installing escalator reducer 117 of the embodiment according to the present invention, first, protrusion 702 is fitted into reducer fitting through hole 402 (step S1301). Next, swivel adjustment of housing 201 with respect to foot plate 204 is performed (step S1302).

[0068] In step S1302, with the protrusion 702 fitted into the reducer fitting through hole 402, the adjustment set screws 205 are screwed into the set screw through holes 206 from the side of the foot plate 204. Then, the adjustment set screws 205 are appropriately tightened or loosened so that the axial direction of the drive sprocket 105 and the axial directions of the output shaft 202, input shaft 203, and brake shaft 301 are perpendicular (orthogonal) to the side end face of the foot plate 204. This allows the swivel adjustment of the housing 201 relative to the foot plate 204 to be performed.

[0069] Next, the housing 201 and the foot plate 204 are connected (step S1303). In step S1303, while maintaining the positional relationship between the housing 201 and the foot plate 204 after the swivel adjustment, the hexagonal socket bolt 401 is inserted through the hexagonal socket bolt through hole 403, and the inserted hexagonal socket bolt 401 is screwed into the hexagonal socket bolt screw hole 703. This operation is performed for each of the hexagonal socket bolt screw holes 703.

[0070] This makes it possible to fix the position of housing 201 relative to foot plate 204. In this embodiment, the coupling mechanism according to the present invention can be realized by hexagon socket bolt 401, hexagon socket bolt screw hole 703, and hexagon socket bolt through hole 403.

[0071] Next, motor 104 and the brake are assembled to escalator reducer 117 (step S1304). In step S1304, motor 104 is assembled to escalator reducer 117 so that the output shaft of motor 104 is parallel to the axial direction of output shaft 202, input shaft 203, and brake shaft 301 of escalator reducer 117, for example.

[0072] An endless belt is then stretched over the output shaft of the assembled motor 104 and a pulley provided on the input shaft 203. The endless belt may be, for example, a V-belt or a V-ribbed belt having a cross-sectional shape that is wider on the outer periphery side and narrower on the inner periphery side. By using a V-belt or a V-ribbed belt as the endless belt, the contact area between the endless belt and the pulley can be made wider, thereby ensuring a large frictional force between the endless belt and the pulley and reliably transmitting the power of the motor 104 to the pulley (input shaft 203) without causing slippage between the endless belt and the pulley.

[0073] Generally, at the site, there is often not enough space around escalator reducer 117. For this reason, it is preferable to perform the processes (work) of steps S1301 to S1304 at a location other than the location (site) where escalator reducer 117 (escalator 100) is installed, such as a manufacturing / assembly location for escalator reducer 117.

[0074] In this way, by performing the swivel adjustment of the housing 201 prior to on-site processing (work), the swivel adjustment of the housing 201 relative to the foot plate 204 can be performed in a stable location other than the on-site where work can be easily performed, thereby ensuring high adjustment accuracy of the swivel adjustment.

[0075] In addition, prior to on-site processing (work), the tension of the belt can be adjusted with precision by performing the work of stretching the endless belt between the output shaft of the assembled motor 104 and a pulley provided on the input shaft 203 in a stable location other than the on-site where work can be easily performed.

[0076] Next, escalator reducer 117 (hereinafter referred to as "assembly mechanism") with motor 104 and brake assembled is transported to the site and placed in a prescribed position on the structural frame with foot plate 204 (step S1305). Specifically, foot plate 204 with housing 201 connected is placed in a position where each of truss mounting holes 302 faces each of bolt holes provided in the structural frame.

[0077] Since the swivel adjustment of housing 201 relative to foot plate 204 is performed prior to the on-site processing (work), the time required for the on-site processing (work) in step S1305 can be shortened. This shortens the time during which escalator 100 cannot be used, thereby reducing the burden on users of escalator 100 and the manager of escalator 100.

[0078] Next, a fixing bolt (not shown) is inserted through the truss mounting hole 302, and the inserted fixing bolt is screwed into a bolt hole provided in the structural frame. This operation is performed for each bolt hole. This allows the assembly mechanism to be fixed to the structural frame. The assembly mechanism includes a sprocket (not shown) attached to the output shaft 202.

[0079] Next, a drive mechanism such as a sprocket (not shown) attached to output shaft 202 and drive sprocket 105 equipped on escalator 100 and an assembly mechanism are connected (step S1306). The control panel is appropriately connected to each part that is driven and controlled by the control panel, such as motor 104 and brakes, and each part that outputs signals to the control panel, such as various sensors (not shown).

[0080] Thereafter, the operation of escalator 100 is checked (step S1307) to determine whether or not there is an abnormality (step S1308). If the result of the operation check in step S1307 shows that there is an abnormality (step S1308: No), the process proceeds to step S1305, where foot plate 204 is placed in a predetermined position on the structural body. If the result of the operation check in step S1308 shows that there is no abnormality (step S1308: Yes), the process ends.

[0081] As described above, the escalator reducer 117 of an embodiment of the present invention is an escalator reducer 117 that reduces the rotational speed of motor 104 equipped to escalator 100, and is characterized in that it has a housing 201 with a protrusion 702 protruding from a bottom surface 701a, and a through-hole 402 for fitting the reducer that is separate from housing main body 701 and can fit with protrusion 702.

[0082] Moreover, escalator reducer 117 of the embodiment according to the present invention comprises foot plate 204 detachably connected to housing 201, and a connecting mechanism connecting housing 201 and foot plate 204, and is characterized in that foot plate 204 has truss mounting hole 302 through which a fixing bolt used to fix escalator reducer 117 can pass, at a position corresponding to the structural frame on which escalator reducer 117 is to be installed. In the escalator reducer of the embodiment according to the present invention, the fitting mechanism according to the present invention is realized by protrusion 702 provided on housing 201 (housing main body 701) and through hole 402 for fitting the reducer provided in foot plate 204.

[0083] According to the escalator reducer 117 of the embodiment of the present invention, the housing 201 and the foot plate 204 are separate bodies. Therefore, by using foot plate 204 with truss mounting holes 302 provided at a position corresponding to the structural body on which escalator reducer 117 is to be installed, escalator reducer 117 can be installed on a variety of escalators 100 simply by adjusting the design of foot plate 204, without having to change the mold of housing 201 (housing main body 701) or process the structural body to accommodate the structural body.

[0084] This makes it possible to reduce the cost of casting and modifying escalator reducer 117. Also, it is possible to reduce the cost of labor and work time required for the installation work of escalator reducer 117, and provide a highly versatile escalator reducer 117. Also, by shortening the time required for renewal of escalator reducer 117, it is possible to reduce the burden on users of escalator 100 and managers of escalator 100.

[0085] Furthermore, the escalator reducer 117 of the embodiment of the present invention is characterized in that it is provided with a set screw through hole 206 that penetrates from the side of the foot plate 204 to the inner wall surface of the reducer fitting through hole 402, and an adjustment set screw 205 that is screwed into the set screw through hole 206.

[0086] According to escalator reducer 117 of the embodiment of the present invention, with protrusion 702 in housing 201 fitted into reducer fitting through hole 402 in foot plate 204, swivel adjustment can be made between housing 201 and foot plate 204 by adjusting the position of adjustment set screw 205 screwed into set screw through hole 206.

[0087] This makes it possible to ensure the installation precision of escalator reducer 117 even when housing 201 and foot plate 204 are separate bodies and through hole 402 for fitting the reducer is made to a certain size taking into account the tolerances that may arise when housing 201 and foot plate 204 are formed by casting.

[0088] Furthermore, according to escalator reducer 117 of the embodiment of the present invention, swivel adjustment between housing 201 and foot plate 204 can be performed simply by adjusting the position of adjustment set screw 205 screwed into set screw through hole 206, so that the installation accuracy of escalator reducer 117 can be easily ensured.

[0089] As a result, even when housing 201 and foot plate 204 are separate bodies, it is possible to reduce the workload of workers and shorten the work time required to adjust the installation accuracy of escalator reducer 117. This makes it possible to reduce the cost of casting and modifying escalator reducer 117, as well as the costs of labor, work time, and the like required for the installation of escalator reducer 117, and to provide a highly versatile escalator reducer 117.

[0090] In the escalator reducer 117 of this embodiment, a configuration has been described in which foot plate 204 is provided with through hole 402 for fitting a reducer that penetrates foot plate 204 in the plate thickness direction, but the present invention is not limited to this. In the reducer (escalator reducer) according to the present invention, instead of through hole 402 for fitting a reducer, a recess having a depth equal to or greater than the protrusion amount of protrusion 702 may be provided in platform 204.

[0091] Further, in the embodiment of escalator reducer 117, a configuration has been described in which protrusion 702 provided on housing 204 is fitted into through-hole 402 for fitting the reducer provided in foot plate 204, but the present invention is not limited to this. Escalator reducer 117 according to the present invention may also be configured such that a protrusion is provided on foot plate 204, and a recess is provided in housing 201 into which the protrusion provided on foot plate 204 can be fitted. In an escalator reducer configured in this way, the fitting mechanism according to the present invention can be realized by the protrusion provided on foot plate 204 and the recess provided in housing 201.

[0092] Furthermore, in a reducer (escalator reducer) which realizes the fitting mechanism of the present invention by means of a protrusion provided on foot plate 204 and a recess provided on housing 201, a recess of a depth equal to or greater than the protrusion amount of the protrusion provided on foot plate 204 may be provided in housing 201, and an adjustment through hole (through hole 206 for a set screw) which penetrates from the side of housing 201 to the inner wall surface of the recess may be provided, and swivel adjustment between housing 201 and foot plate 204 may be performed by an adjustment screw (adjustment set screw 205) which is screwed into the adjustment through hole. [Industrial Applicability]

[0093] INDUSTRIAL APPLICABILITY As described above, the reducer according to the present invention is useful as a reducer for use in an escalator, and is particularly suitable as a reducer for use in the renewal of an escalator. [Explanation of symbols]

[0094] 100 Escalator 117 Escalator reducer 201 Case 204 Footboard 205 Adjustment screw 206 Setscrew through hole 301 Brake shaft 302 Truss mounting hole 401 Hexagon socket head bolt 402 Through hole for fitting reducer 403 Through hole for hexagon socket bolt 701 Main unit 701a Bottom 702 Protrusion 703 Hexagonal socket bolt screw hole

Claims

1. A reducer for reducing the rotation speed of a motor provided in a passenger conveyor, A housing for containing lubricating oil; A foot plate provided separately from the housing; a fitting mechanism including a protruding portion provided on the housing or the foot plate and protruding relative to the foot plate or the housing, and a recess or a through hole provided on the foot plate or the housing that can be fitted with the protruding portion; A connection mechanism that connects the housing body and the foot plate; an adjustment through hole penetrating from a side surface of the foot plate to an inner wall surface of the recess or the through hole; an adjustment screw that is screwed into the adjustment through hole; Equipped with The reducer is characterized in that the foot plate has mounting holes through which bolts used to fix the reducer can be passed, at positions corresponding to a structural body on which the reducer is to be installed.

2. A reducer for reducing the rotation speed of a motor provided in a passenger conveyor, A housing for containing lubricating oil; A foot plate provided separately from the housing; a fitting mechanism including a protruding portion provided on the housing or the foot plate and protruding relative to the foot plate or the housing, and a recess or a through hole provided on the foot plate or the housing that can be fitted with the protruding portion; A connection mechanism that connects the housing body and the foot plate; an adjustment through hole penetrating from a side surface of the housing to an inner wall surface of the recess or the through hole; an adjustment screw that is screwed into the adjustment through hole; Equipped with The reducer is characterized in that the foot plate has mounting holes through which bolts used to fix the reducer can be passed, at positions corresponding to a structural body on which the reducer is to be installed.

Images