JP5027269B2 - Passenger conveyor and its assembly method - Google Patents

Description

  The present invention relates to passenger conveyors such as escalators and electric roads, and more particularly to a passenger conveyor having an improved support mechanism for supporting a passenger mounting portion on an axle and an assembling method thereof.

  In general, the passenger conveyor supports the wheels on both sides of the axle along the width direction of the passenger mounting portion, and connects the endlessly connected chains on both sides in the axial direction of the axle, respectively, and the axle to the passenger mounting portion. The passenger mounting portion is circulated and moved by driving the chain.

And as a structure which supports an axle in a passenger loading part, for example, as indicated by patent documents 1,
A bracket having a C-shaped opening is provided below the passenger mounting portion, the axle is loosely fitted into the C-shaped opening, and then the sleeve fitted to the axle is moved along the axial direction into the C-shaped opening. Then, a pin is protruded and engaged from the bracket side to the outer peripheral side of the sleeve, and the axle is fixed to the passenger mounting portion.

JP 2002-167154 A

  The step described in Patent Document 1 has a C-shaped opening because the axle is loosely fitted in the C-shaped opening of the bracket and interposed between the inner peripheral surface of the C-shaped opening and the outer peripheral surface of the axle. The sleeve cannot be inserted unless a clearance is secured between the inner peripheral surface of the section and the outer peripheral surface of the axle. In particular, the vicinity of the C-shaped opening is also a place that cannot be visually confirmed structurally. Therefore, when attaching the axle to the passenger mounting part, it is a frustrating work, and it takes a lot of time and labor to attach the axle to the passenger mounting part. There is a problem that requires.

  An object of the present invention is to provide a passenger conveyor that can be easily inserted into a passenger mounting portion of an axle by easily inserting a sleeve into a C-shaped opening with a simple configuration.

  In order to achieve the above-mentioned object, the present invention is configured such that a sleeve is moved axially to the C-shaped opening between the axially inner end of the C-shaped opening provided on the bracket of the passenger mounting portion and the axle. When inserting, a clearance securing mechanism that secures a clearance between the outer periphery of the axle and the inner periphery of the C-shaped opening is provided.

  Specifically, the axle fitted with the sleeve is formed with a step portion having an outer peripheral surface larger in diameter than the inner diameter of the C-shaped opening and concentric with the axle, and the end of the C-shaped opening. On the opposite side of the sleeve from the insertion side of the sleeve, a step portion having an inner peripheral surface larger than the inner diameter of the C-shaped opening and having an inner peripheral surface concentric with the inner diameter of the C-shaped opening is formed. Thus, a gap securing mechanism is configured.

  With the above configuration, when the sleeve fitted to the axle is moved in the axial direction and inserted into the C-shaped opening, the step on the axle is engaged with the step on the C-shaped opening. By this, a gap can be secured between the outer peripheral surface of the axle and the inner peripheral surface of the C-shaped opening, and if the sleeve is moved in the axial direction with this clearance secured, the sleeve can be inserted into the clearance relatively easily. can do.

  As described above, according to the present invention, it is possible to obtain a passenger conveyor that can be easily inserted into the C-shaped opening of the sleeve and easily mounted on the passenger mounting portion of the axle with a simple configuration.

The side view of the step of the escalator which shows 1st Embodiment of the passenger conveyor by this invention. FIG. 2 is a partially broken enlarged view before inserting a sleeve as seen from the direction of arrow A in FIG. 1. Sectional drawing which follows the BB line of FIG. The enlarged view equivalent to FIG. 2 after sleeve insertion. The partially broken side view which shows the escalator in which the step of FIG. 1 is used. The equivalent figure of FIG. 2 of the step of the escalator which shows 2nd Embodiment of the passenger conveyor by this invention.

  Hereinafter, a first embodiment of a passenger conveyor according to the present invention will be described based on an escalator shown in FIGS.

  The escalator 1 largely circulates along a frame 4 installed across the upper floor 2 and the lower floor 3 of the building structure, and a guide rail GR (FIG. 1) installed on the frame 4. A plurality of steps 5 connected endlessly, a balustrade panel 6 erected along the longitudinal direction on the frame 4 on both sides of the step 5 in the width direction, and circulated along the periphery of the balustrade panel 6 It has an endless moving handrail 7 that moves, and a drive machine 8 that is installed in the frame 4 and drives the steps 5.

  The frame 4 has an upper machine room 9 and a lower machine room 10 on the upper floor 2 side and the lower floor 3 side. A drive sprocket 11 is pivotally supported in the upper machine room 9. A driven sprocket 12 is pivotally supported. A step chain 13 is wound between the drive sprocket 11 and the driven sprocket 12, and the step chain 13 is circulated and moved by transmitting the driving force of the drive machine 8 to the drive sprocket 11. .

  On the other hand, the step 5, which is a passenger mounting portion according to the present invention, includes a tread surface 14 on which a passenger gets, a bracket 15 that supports the tread surface 14, and a riser 16 that extends downward from the lower floor side end portion of the tread surface 14. Have. A rear wheel 17 is pivotally supported on the bracket 15 in the vicinity of the lower end portion of the riser 16, and an axle 19 having a front wheel 18 pivotally supported at both ends is supported on an upper floor side end portion of the bracket 15.

  The axle 19 has a small diameter in which the step chain 13 is coupled to the inner side in the axial direction (on the middle side in the axial direction) than the shaft support portion of the rear wheel 18 and the sleeve 20 is fitted so as to be movable in the axial direction. A portion 21A and a step portion 21B having a diameter larger than that of the small diameter portion 21A are provided.

  In addition, a C-shaped opening 22 having an inner peripheral surface that is larger in diameter than the small diameter portion 21A of the axle 19 and substantially the same diameter as the outer peripheral portion of the sleeve 20 is formed in the shaft support portion of the bracket 15. Is formed so as to substantially face the guide rail GR. The inner end of the C-shaped opening 22 has an inner peripheral surface larger in diameter than the inner peripheral surface of the C-shaped opening 22 at the inner end in the axial direction (on the middle side in the axial direction) of the C-shaped opening 22. A semi-annular step 23 that is concentric with the peripheral surface is formed. When the step portion 21B of the axle 19 is fitted into the inner peripheral surface of the step portion 23, a gap is formed between the inner peripheral surface of the C-shaped opening 22 and the small diameter portion 21A of the axle 19. Therefore, the step 23 of the C-shaped opening 22 and the step 21B of the axle 19 constitute the clearance securing mechanism of the present invention.

  The sleeve 20 has a groove 20G formed on the entire periphery, and has a flange 20F having a diameter larger than that of the outer periphery of the sleeve 20 at the end on the front wheel 18 side.

  Further, an engaging pin 24 protrudes from the outer periphery of the C-shaped opening 22 of the bracket 15 so as to penetrate the inner peripheral surface, and this engaging pin 24 is protruded from the inner diameter side of the C-shaped opening 22. There is provided a spring 25 for constantly applying a force to the spring. When the sleeve 20 is fitted into the fixed position of the C-shaped opening 22, the engagement pin 24 engages with the concave groove 20 </ b> G of the sleeve 20.

  The above configuration is formed to be bilaterally symmetric on both sides in the width direction of the step 5 and both sides in the axial direction of the axle 19.

  Next, an assembling procedure for supporting the C-shaped opening 22 configured as described above on the axle 19 will be described.

  First, as shown in FIG. 2, in a state where the sleeve 20 is shifted out of the range of the C-shaped opening 22 with respect to the axle 19 on which the front wheel 18 is placed on the guide rail GR, the small diameter of the axle 19 is set. The C-shaped opening 22 is fitted on the portion 21 </ b> A from the opening side, and the stepped portion 21 </ b> B of the axle 19 is engaged with the semi-annular stepped portion 23 of the C-shaped opening 22.

  Thus, by engaging the step portion 21B of the axle 19 with the semi-annular step portion 23 of the C-shaped opening 22, the space between the small-diameter portion 21A of the axle 19 and the inner peripheral surface of the C-shaped opening 22 is obtained. A gap is secured. In a state where the gap is secured, the sleeve 20 is slid along the small diameter portion 21A of the axle 19 and inserted into the C-shaped opening 22 from the lateral direction.

  At this time, when the outer diameter of the stepped portion 21B of the axle 19 is smaller than the inner diameter of the semi-annular stepped portion 23 of the C-shaped opening 22, the secured gap becomes narrower in the upper part and goes downward. As a result, the minimum portion of the gap becomes narrower than the thickness of the sleeve 20 in the radial direction, and the sleeve 20 cannot be inserted into the gap. However, since there is no gap at all, the operator can easily insert the sleeve 20 into the C-shaped opening 22 by adjusting the gap while lifting the bracket 15 by searching for the gap. Although the engaging pin 24 protruding into the C-shaped opening 22 becomes an obstacle when the sleeve 20 is inserted, by forming a tapered inclined surface 20S on the insertion tip side of the sleeve 20, the engaging pin 24 is inclined. 20S can be lifted against the spring 25 and inserted. Even when the sleeve 20 is inserted into the sleeve 20, even when the minimum portion of the gap is narrower than the radial thickness of the portion of the sleeve 20 other than the slope 20 </ b> S, Since the tip of the inclined surface 20S is located in the gap, the insertion becomes easy. For this reason, it is desirable that the tapered inclined surface 20 </ b> S be provided with an inclined surface larger than the radial difference between the inner peripheral surface of the step portion 23 of the C-shaped opening 22 and the outer peripheral surface of the step portion 21 </ b> B provided on the axle 19.

  Then, when the flange 20F hits the end of the C-shaped opening 22, the insertion operation is finished, and at this time, the engaging pin 24 engages with the concave groove 20G of the sleeve 20 and the axial movement of the sleeve 20 does not occur. Is prevented.

  In the above configuration, the outer diameter of the stepped portion 21B of the axle 19 is formed to be slightly smaller than the inner diameter of the stepped portion 23 of the C-shaped opening 22, so that the upper portion is narrower and becomes wider as it goes downward. However, after the sleeve 20 is inserted into the C-shaped opening 22, the outer periphery of the stepped portion 21 </ b> B of the axle 19 is separated from the inner periphery of the stepped portion 23 of the C-shaped opening 22, as shown in FIG. 4. Therefore, if the axle 19 rotates, the sleeve 20 is made of a sintered alloy impregnated with lubricating oil, so that the inner and outer peripheral surfaces of the two step portions 21B and 23 do not slide during rotation. Generation of sliding noise can be prevented.

  Here, the outer diameter of the stepped portion 21B of the axle 19 and the inner diameter of the stepped portion 23 of the C-shaped opening 22 are made substantially the same diameter to form a concentric gap with the axle 19, and the radial dimension of the gap is By making the sleeve 20 almost the same as the thickness (diameter dimension), the sleeve 20 can be easily inserted into the secured gap. In this case, it is desirable that the front wheel 18 is rotatably supported with respect to the axle 19 and the axle 19 does not rotate so that sliding noise does not occur.

  By the way, the above explanation is an explanation of the assembling work procedure for supporting the C-shaped opening 22 on the axle 19, but the disassembling work procedure for separating the C-shaped opening 22 from the axle 19 reverses the above assembling work procedure. Can be easily separated.

  Next, a second embodiment of the passenger conveyor according to the present invention will be described based on the steps of the escalator shown in FIG. Note that the same reference numerals as those in FIGS. 1 to 5 indicate the same components, and thus detailed description thereof is omitted.

  In the present embodiment, a configuration different from that of the first embodiment is that a disk 26 is provided instead of the step portion 21B of the first embodiment.

  That is, the outer diameter of the disk 26 is the same as that of the step portion 21B of the first embodiment, and the same effect is achieved. Furthermore, according to the present embodiment, the axle 19 having the same thickness can be used even if the size of the C-shaped opening 22 or the step 23 changes for each product, and the degree of freedom in designing the axle 19 and the like. Can be increased.

  The above explanation explained an escalator in which a step is formed in a passenger mounting part in an inclined section as a passenger conveyor, and a step was described as a passenger mounting part. Can also be applied. In that case, the footboard that is the passenger mounting portion does not have the riser 16, and the bracket 15 of the passenger mounting portion is not substantially triangular as shown in FIG. Become.

  DESCRIPTION OF SYMBOLS 1 ... Escalator, 2 ... Upper floor, 3 ... Lower floor, 4 ... Frame, GR ... Guide rail, 5 ... Step (passenger mounting part), 6 ... Railing panel, 7 ... Moving handrail, 8 ... Drive machine, 9 ... Upper machine room, 10 ... Lower machine room, 11 ... Drive sprocket, 12 ... Driven sprocket, 13 ... Step chain, 14 ... Tread, 15 ... Bracket, 16 ... Riser, 17 ... Rear wheel, 18 ... Front wheel, 19 ... Axle, 20 ... Sleeve, 20F ... Gutter, 20G ... Groove, 20S ... Slope, 21A ... Small diameter part, 21B ... Step part, 22 ... C-shaped opening, 23 ... Step part, 24 ... Engagement pin, 25 ... Spring, 26 …disk.

Claims (8)

  A frame installed in a building structure, a plurality of passenger mounting parts connected endlessly in the frame, and a bracket that is provided in the passenger mounting part and supports the passenger mounting part, and the bracket A C-shaped opening provided in the wheel, an axle having the C-shaped opening loosely fitted thereto and supporting a wheel on both sides, and the C-shaped opening fitted to the axle and moved in the axial direction along the axle. In the passenger conveyor provided with the sleeve to be inserted into the sleeve, the sleeve is inserted between the C-shaped opening and the axle between the axially inner end of the C-shaped opening and the axle. A passenger conveyor comprising a clearance securing mechanism for securing a clearance between an outer periphery of an axle and an inner periphery of the C-shaped opening.   The clearance securing mechanism forms a step portion having an outer peripheral surface larger in diameter than the inner diameter of the C-shaped opening on the axle and concentric with the axle, and the sleeve at the end of the C-shaped opening. On the side opposite to the insertion side, a step portion having an inner peripheral surface larger than the inner diameter of the C-shaped opening and having an inner peripheral surface concentric with the inner diameter of the C-shaped opening is formed. The passenger conveyor according to claim 1, wherein the passenger conveyor is configured.   3. The passenger conveyor according to claim 2, wherein the step formed on the axle is a disk provided on the axle.   The sleeve is provided on the side facing the C-shaped opening with a slope larger than the radial difference between the inner peripheral surface of the stepped portion of the C-shaped opening and the outer peripheral surface of the stepped portion provided on the axle. The passenger conveyor according to claim 2 or 3, wherein the passenger conveyor is provided.   The passenger conveyor according to claim 2, 3 or 4, wherein an outer diameter of the step portion of the axle is formed smaller than an inner diameter of the step portion of the C-shaped opening.   5. The passenger conveyor according to claim 2, wherein the outer diameter of the step portion of the axle is formed to be substantially the same as the inner diameter of the step portion of the C-shaped opening.   A concave groove is formed on the outer periphery of the sleeve, and an engagement pin that projects into the concave groove when the sleeve is inserted into the C-shaped opening is provided in the C-shaped opening. The passenger conveyor according to any one of claims 1 to 6.   A frame installed in a building structure, a plurality of passenger mounting parts connected endlessly in the frame, and a bracket that is provided in the passenger mounting part and supports the passenger mounting part, and the bracket A C-shaped opening provided in the wheel, an axle having the C-shaped opening loosely fitted thereto and supporting a wheel on both sides, and the C-shaped opening fitted to the axle and moved in the axial direction along the axle. A stepped portion having an inner diameter larger than the inner diameter of the C-shaped opening at the inner end in the axial direction of the C-shaped opening. A step having an outer diameter larger than the inner diameter of the C-shaped opening is formed, and the step of the C-shaped opening is inserted when the sleeve is inserted between the C-shaped opening and the axle. The inner diameter of the C-shaped opening and the inner diameter of the stepped portion of the axle Securing a clearance between the shaft, the assembly method of the passenger conveyor, characterized by inserting the sleeve between the axle and the C-shaped opening by moving the sleeve axially in this state.

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