JP2000118936A - Jig for mounting steps of man conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig for connecting steps of an escalator or the like with a shaft such as a front wheel shaft simply. SOLUTION: This jig 9 consists of a hold member 91 and a handle part 92, and a stepped part 91a and a cut-in part are provided in the hold member 91. Moreover, a collar 7 inserted into a shaft 3 externally is supported in the stepped part 91a of the hold member 91 so as to turn freely, and a locking bar 11c attached to a frame 11 of a step 1 in the cut-in part is locked by supporting it in the stepped part 91a. Furthermore, since a locking device is formed in such a way that it is positioned on the same plane crossing the shaft 3 orthogonally together with a groove part 7a of the collar 7 while the collar 7 is supported in the stepped part 91a, it is possible to connect the step 1 with the shaft 3 easily merely by turning the collar 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION In a man conveyor for carrying passengers by steps, such as an escalator or a pallet-type moving sidewalk, an endless step is driven by a step chain stretched underneath. The present invention relates to a jig for attaching a step of a man conveyor for connecting a step to a step chain.

[0002]

2. Description of the Related Art A step portion of a man conveyor such as an escalator is configured as shown in FIGS.

FIG. 8 is a partially exploded view of a main part of a step portion. Each step 1 connected endlessly receives a driving force of left and right step chains 2 and 2 stretched endlessly. Moving. A front wheel shaft 3 of the step 1 is incorporated in the step chains 2 and 2 in advance, and front wheels 4 and 4 as drive rollers are attached to both ends of the front wheel shaft 3. The rear wheels 5, 5, which are follow-up rollers for the front wheels 4, 4, which are drive rollers, are mounted on the frame 11 of the step 1 in advance.
4 together with the guide rails 6 and 6 in the truss.

Therefore, the step 1 and the front wheel axle 3 are connected via cylindrical collars 7, 7 which are externally inserted on the left and right sides of the step 1 and are slidably and rotatably fitted.

[0005] That is, as shown in an enlarged manner in FIG. 9, the collar 7 is extrapolated to the front wheel shaft 3 which is a shaft.
At the edge of the frame 11 of the step 1, a fitting portion 11a is formed in a U-shape so that the collar 7 is fitted, and the shape of the fitting portion 11a is slightly narrowed between both ends.
Is provided with a locking rod 11c biased by a coil spring 11b toward the center of the fitting portion 11a, that is, toward the front wheel shaft 3.

On the outer surface of the cylindrical collar 7, a locking rod 1 is provided.
A groove 7a into which the front end of 1c is fitted is formed, and FIG.
As shown in FIG.
The step 1 and the collar 7 are connected to each other by being fitted into the groove 1a and fitting the leading end of the locking rod 11c into the groove 7a.

The engaging rod 11c of the step 1 is supported by a U-shaped support frame 11d attached to the frame 11, and one head is locked by the support frame 11d.
The other end is constantly urged toward the center axis of the collar 7 (the front wheel shaft 3) by the extension force of the coil spring 11b.
9 denotes a stopper pin for locking the coil spring 11b.

In the connection between each step 1 and the front wheel shaft 3, a cleat (cle) on the road surface of the tread plate 12 as shown in FIGS.
at) engages with the comb at the escalator entrance,
The cleats provided on the riser 13 of the step 1 are also positioned with high precision so as to mesh with the ends of the adjacent steps.

As shown in FIG. 10, between the collar 7 and the step chain 2, one or a plurality of shims 8 made of a spring washer for positioning the step 1 are fitted and locked. Rod 11b and groove 7
The fitting tolerance between the step 1a and the step 1a is also extremely small, and a force that pushes back in the direction of the arrow X by the shim 8 acts on the collar 7, so that the step 1 has high precision. And is incorporated into the front wheel axle 3,
It is configured to provide a smooth ride.

Therefore, in the operation of joining the step 1 and the collar 7 by the worker, the worker first brings the left and right collars 7, 7 to the center of the front wheel shaft 3 once, and then fits the frame 11 in that state. Step 1 is fitted so that joint portion 11a catches front wheel shaft 3.

Next, when the worker pushes the collar 7 having the tapered end 7b toward the step chain 2 (the front wheel 4 side), the locking bar 11c is pushed back, and the collar 7 is rotatable. It is fitted into the fitting portion 11a.

The worker presses the collar 7 from the inside toward the step chain 2 side (outside) on the one hand, and adjusts the rotation of the collar 7 from the outside on the other hand, to thereby adjust the groove 7 of the collar 7.
An adjustment operation was performed so as to find a coincident point between a and the tip of the locking rod 11c, and the locking rod 11c was fitted into the groove 7a.

However, in the escalator,
Both the step 1 and the step chain 2 are configured endlessly.
Are closely engaged with each other and move, so that there is no free space for the operator to push the collar 7 toward the step chain 2 especially in the inclined straight portion of the escalator. Therefore, as shown in FIG. 11, the operation of pushing the collar 7 into the step chain 2 by the worker is performed in the machine room B at the end of the truss where a gap A is formed in which the worker can barely insert his hand. Work was done. In the machine room B, the front wheels 4, 4
And the rear wheels 5, 5 are separated and revolve to form a gap A.

Therefore, the first step of removing the step 1 by the operator is also performed in the truss machine room B by the front and rear steps 1,
The hand was inserted into the narrow gap A between the two.

Although the above description has been made with reference to the example of mounting the escalator steps, the same applies to a pallet-type moving sidewalk. In this case, the pallet-type steps are included in the steps of the present invention. It will be described below.

[0016]

As described above, the connection between the step and the shaft in the man conveyor was performed by the operation of fitting the engaging rod on the step and the collar groove on the shaft by the operator.

Since both the steps and the step chains are endless, assembling and removing the steps are performed by inserting a hand into a narrow gap formed between the steps.

Further, as described above, a force for pushing the collar back inward is always applied to the collar, and the fitting tolerance between the locking rod and the groove of the collar is set to be extremely small. In addition, it is not easy for an operator to perform positioning while pushing the collar toward the step chain side and to align the locking rod with the groove when assembling or the like.

In particular, as described above, the space between the steps and the shaft is narrow, and there is no situation in which the internal fitting position can be visually confirmed from the outside. The operation has to be carried out in a groping state based on the above, requiring skill and a lot of time for the mounting operation. In addition, in the case of a man conveyor, such work has to be performed for all of the many steps that are continuously formed in a stepless manner. Therefore, there is a great obstacle to shortening the installation work of the man conveyor, and improvement has been demanded.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a jig for attaching a step of a man conveyor, which can easily fit a locking rod of the step into a groove of a collar.

[0021]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and the invention according to the first aspect is characterized in that a cylindrical collar slides on a shaft inserted between step chains. The step and the shaft are connected by a locking rod provided on the step and urged toward the shaft being fitted into a groove provided on the outer surface of the collar so as to be movable and rotatable. A jig for mounting a step in a man conveyor configured to be provided with a step at one end so as to rotatably support the collar while covering the collar from the outside, and the step at the step. It is configured to be able to lock the locking rod while supporting the collar, and in the locking position, the locking rod and the groove are both located on the same plane perpendicular to the axis of the collar. Open to the outside A holding member having a interrupt section, characterized by comprising a handle portion of the rod-like provided in projecting outer side wall of the holding member.

As described above, according to the first aspect of the present invention, the holding member of the jig has the notch so as to correspond to the groove on the surface perpendicular to the axis of the collar at the locking position of the locking rod. Is provided, the operator can, on the one hand, position the locking bar in the locking position and, on the other hand, simply adjust the rotation of the collar on the step chain side so that the support bar and the groove are aligned and easily coupled. be able to.

According to a second aspect of the present invention, in the jig according to the first aspect, the holding member is formed to have a substantially U-shaped cross section, and the opening of the cut portion is directed toward the substantially U-shaped opening. It is characterized by being provided.

As described above, according to the second aspect of the present invention, in addition to the first aspect of the present invention, since the holding member is formed to have a substantially U-shaped cross section, the jig can be mounted on the shaft. The collar and the collar are housed in a substantially U-shape, and the area for capturing the collar is widened, so that the rotating operation around the shaft axis at the time of mounting can be stabilized, and
The opening in the shape of a letter serves as a guide for catching the locking rod, so that the locking rod is smoothly captured.

According to a third aspect of the present invention, in the jig of the second aspect, the holding member has an opening of the cut portion having a taper inclined toward the step chain.

As described above, according to the third aspect of the present invention, in addition to the second aspect of the present invention, since the opening of the notch portion has a taper inclined toward the step chain side, the holding member has a notch. The opening extends to the step chain side, so that the locking rod can be more easily captured, and by rotating the holding member, a force for pressing the collar in the direction of the step chain is generated, which also works to push the shim.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a jig for mounting a step on a man conveyor according to the present invention will be described below in detail with reference to FIGS. The same components as those of the conventional configuration shown in FIGS. 8 to 11 are denoted by the same reference numerals, and detailed description is omitted.

That is, as shown in FIG. 1, a jig 9 for attaching a step of a man conveyor is provided with a saddle-shaped holding member 91 and an L-shaped projecting outer wall of the holding member 91. Locking rods 11c, 11c respectively attached to the left and right ends of the frame 11 of the step 1, and the groove portions 7 provided in the collars 7, 7.
a, 7a.

The holding member 91 of the jig 9 is shown in FIGS.
As shown in FIG. 2, similarly to the fitting portion 11a of the frame 11, both ends have a substantially U-shaped cross section with a slightly narrowed shape, and have a step portion 91a inside thereof, as shown in FIG. The U-shaped opening is fitted in the direction of arrow D toward the front wheel shaft 3 so as to cover the collar 7 from the outside, and the collar 7 is rotatably supported while supporting one end of the collar 7 with the stepped portion 91a. It is configured.

As shown in FIG. 3, the holding member 91 has a notch 9 opening toward the substantially U-shaped opening.
1b is formed, and the notch portion 91b is configured so that the locking rod 11c can be captured, guided to the locking position P, and held.

As described above, the notch portion 91b of the holding member 91 is configured so that the locking rod 11c can be locked at the locking position P while the collar 7 is supported by the step portion 91a. As shown, the length L from the step portion 91a is
In the locking position P, the groove 7a of the collar 7 is formed so as to be located on the same plane orthogonal to the axial direction of the collar 7 (the front wheel shaft 3), that is, on the line YY. The holding member 91 is configured such that the cut portion 91b is provided with a taper 91ba so that the step chain 2 side of the opening of the cut portion 91b is inclined outward and spread.

In order to connect the steps 1 to the collar 7, the operator operates the handle 92, which has an L-shape and extends upward, as shown in FIG. 5 (a). Collar 7 from below so that 91 captures collar 7
5 and slide in the direction of arrow X 'to lock the collar 7 on the step portion 91a and push the holding member 91 toward the step chain 2 as shown in FIG. 5B. When pushing the holding member 91 toward the step chain 2, the operator operates to catch the locking rod 11c in the U-shaped opening.

Next, as shown in FIG.
1 is that the opening of the cutout portion 91b is provided toward the U-shaped opening, so that the operator operates the grip portion 92,
While locking the collar 7 to the step portion 91a, as shown in FIG. 5B, the holding member 91 is moved in the axial direction of the collar 7 (arrow X ').
Direction) and rotational adjustment in the direction of arrow Q about the shaft (3), and the locking rod 11c is inserted into the U-shaped opening.
The collar 7 is pushed in while catching.

As a result, as shown in FIG. 6 (c) and FIG. 2, the locking rod 11c caught in the U-shaped opening is caught in the opening of the cutout 91b, and the operator further moves in the direction of arrow R. 6D and FIG. 3 and FIG. 4, the locking rod 11c is cut into the notch 91 as shown in FIG.
b can be pushed into the locking position P.

At this time, by the action of the taper 91ba of the notch 91b, the rotating motion of the holding member 91 presses the collar 7 toward the step chain 2 and simultaneously crushes the shim 8.

When the locking rod 11c is pushed into the locking position P of the notch 91b, as described above, the locking position P and the respective center positions of the groove 7a of the collar 7 correspond to one cross section of the collar 7. Since they match on the line Y-Y, in this state, the worker moves to the outside (step chain 2) as shown in FIG.
By simply rotating the collar 7 from the side in the arrow Z direction (or the R direction), the groove 7a of the collar 7 can be aligned with the locking rod 11c at the locking position P and coupled.

As described above, in this embodiment, the jig 9
The cross section of the holding member 91 is substantially U-shaped,
A long semicircular facing region is formed between the holding member 91 and the collar 9, and the holding member 91 stabilizes the turning operation in a state where the collar 9 is captured.

Further, since the substantially U-shaped opening also serves as a guide for catching the locking rod, the worker can smoothly and quickly capture the locking rod 11c without necessarily relying on visual observation. The guide is guided to the locking position P in the cutout portion 91b, and as shown in FIGS.

Further, in this embodiment, the holding member 9
1 is configured such that the opening of the cutout portion 91b has a taper 91ba inclined toward the step chain 2 side.
The opening of the cut portion is widened toward the step chain, and the catch of the locking bar 11c is facilitated.

Further, as described above, the collar 7 corresponds to the step 1.
The positioning between the collar 7 and the locking bar 11b of the step 1 is set to an extremely small tolerance. In a state where the step portion 91a of the 91 supports the collar 7,
Since the locking position P automatically and accurately coincides with the groove 7a, the worker does not care about the relative positional relationship between the collar 7 and the locking rod 11b in the axial direction. The connection can be easily performed by the rotation operation.

In pushing the locking rod 11c into the locking position P, the operator pivots the holding member 91 around the shaft axis. In short, the jig of the present invention comprises the holding member 91. The holding member 91 is not limited to the U-shaped cross section, but may be a notch. 91b can also be made substantially L-shaped opening to the step chain 2 side. The groove 7a of the collar 7
May have a bottomed concave shape, and may penetrate if the contact of the locking rod 11c does not significantly affect the operation of the front wheel shaft 3.

In the above embodiment, the jig 9 for fitting the locking rod 11c to one collar 7 has been described. However, the jig 9 is required to fit the locking rod 11c to the other collar 7 on the opposite side. Needless to say, the jig 9 can be implemented by having a symmetrical structure.

As described above, according to the jig of this embodiment, the step 91a of the jig 9 and the locking position P
And the positioning of the groove 7a in the collar 7 is performed, and the operator captures the locking rod 11c at the cutout 91b while supporting the collar 7 with the stepped portion 91a, and rotates the grip portion 92. Pushing into the locking position P by operation,
The step 1 can be easily attached by a simple operation of rotating the collar 7 from the outside.

In any case, according to the jig of the present invention,
When connecting the step to the shaft connected to the step chain, the groove of the collar and the locking rod attached to the frame of the step can be easily matched on the shaft axis and connected, so special skillful work It can be easily installed without any staff,
The effect obtained in practical use is great.

[0045]

According to the first aspect of the present invention, the holding member of the jig is provided with the notch at the position where the locking rod is locked so as to coincide with the groove on the surface perpendicular to the axis of the collar. Therefore, the step can be easily connected to the drive shaft by rotating and adjusting the collar on the step chain side with the locking rod positioned at the locking position.

According to the second aspect of the present invention, in addition to the jig of the first aspect, the holding member is formed so that the cross section thereof is substantially U-shaped. And a stable rotation operation is possible, and the substantially U-shaped opening serves as a guide for catching the locking bar, so the locking bar is quickly captured and the steps are attached. Work efficiency can be improved.

According to the third aspect of the present invention, in addition to the jig of the second aspect, the holding member has a tapered portion in which the opening of the cut portion is inclined toward the step chain side. Are spread to the step chain side, the catching of the locking rod is facilitated, work efficiency can be improved, and the collar can be slid in the step chain direction by the rotation of the holding member.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a jig for mounting a step on a man conveyor according to the present invention, showing a state in which a locking rod of the step is fitted into a groove of a collar by the jig. is there.

FIG. 2 is an operation explanatory view showing a state in which a shaft and a collar are captured when the jig shown in FIG. 1 is used.

FIG. 3 is an operation explanatory view showing a state in which the jig shown in FIG. 1 catches a locking rod.

FIG. 4 is a front view showing a positional relationship between the jig shown in FIG. 1 and a collar.

5 (a) and 5 (b) are process diagrams showing a procedure for fitting a step-locking tool into a collar of a collar using the jig shown in FIG. 1;

6 (c) and 6 (d) are process diagrams, following FIG. 5, showing a procedure for fitting a step-locking tool into a collar groove by a jig.

FIG. 7 is a sectional view of a main part of the jig shown in FIG. 1;

FIG. 8 is an exploded perspective view showing a step portion of the escalator.

FIG. 9 is an enlarged exploded perspective view showing a main part of FIG. 6;

FIG. 10 is a front view showing a state after the step portion shown in FIG. 6 is assembled.

FIG. 11 is a side view for explaining a mounting operation position of the step portion shown in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Step 11 Frame 11c Lock bar 2 Step chain 3 Front wheel shaft (shaft) 4 Front wheel 7 Collar 7a Groove 9 Jig 91 Holding member 91a Step 91b Notch 92 Holding part P Locking position

Claims (3)

[Claims] 1. A tubular collar is slidably and rotatably externally inserted into a shaft inserted between step chains, and is provided on a groove provided on an outer surface of the collar, on a shaft provided on a step and on the shaft. A step mounting jig for a man conveyor configured to connect a step and the shaft by fitting a locking rod urged toward the step, wherein the jig is turned while covering the collar from outside. It has a stepped portion at one end so as to be movably supported, and is configured to be able to lock the locking bar while supporting the collar at the stepped portion. A holding member having a cutout opening outwardly so as to be located on the same plane perpendicular to the axis of the collar, and a rod-shaped member provided on the outer wall of the holding member so as to protrude therefrom. With a handle The step mounting jig of a passenger conveyor according to claim Rukoto. 2. The holding member according to claim 1, wherein a cross section of the holding member is formed in a substantially U-shape, and an opening of the cut portion is provided toward the substantially U-shaped opening. A jig for mounting the steps of the described conveyor. 3. The jig for mounting a step on a man conveyor according to claim 2, wherein said holding member has an opening of said cutout portion having a taper inclined toward said step chain.