JP2008290806A - Step device of man conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a step device of a man conveyor capable of being attached/detached to/from a step shaft with high safety by using strong components and mechanisms and by simple operations. <P>SOLUTION: This step device is provided with a step main body, a cam 7 journaled by the step main body, a mouth cap 8 connected to the cam 7 to hold the step shaft 11 together with the step main body by rotating to the step main body side due to abutting of the cam 7 on the step shaft 11, and a hook fitting 13 provided on one of the step main body and the mouth cap 8 and made of a rigid body attachably/detachably engaged to the other of the step main body and the mouth cap 8 when holding the step shaft 11 by the step main body and the mouth cap 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a step device that is detachably fixed to a step shaft provided in a step chain.

  The fixing of the conventional man conveyor to the step shaft of the step device is a screw method, and it takes time to attach and detach. Therefore, when attaching or detaching the step (step), a cam that engages with the step shaft (step shaft) to open and close the lid, a fitting body that projects from the front end side of the lid, and a cover that is covered when the lid is closed. The step fixing device is provided at a portion of the step opposite to the fitting body, and is fixed to the step shaft by a step fixing device including a fitting body that inserts the fitting body and elastically holds the fitting body and holds the lid closed when the step is attached. A step device has been proposed (see, for example, Patent Document 1).

JP-A-8-59164

  However, the thing of patent document 1 causes the to-be-fitted body and the fitting body to slide each time the step is attached / detached, which causes the large-diameter portion of the to-be-fitted body to wear and reduce the thickness. It was. In addition, when the wear due to sliding reaches the proof stress limit of the large diameter part of the fitting body, it will break due to insufficient strength, and the lid will come off as the head of the fitting body comes out of fitting with the fitting body. Could fall off from the step axis. Furthermore, when removing the steps, detachable tools are required for all the steps, which is cumbersome. Moreover, it was not able to confirm visually whether the to-be-fitted body and the fitting body fitted correctly.

  The present invention has been made to solve the above-described problems, and its purpose is to provide a high safety factor using a strong component and mechanism, and to be attached to and detached from the step shaft with a simple operation. It is to provide a stepping device for a simple man conveyor.

  A step device of a man conveyor that is detachably fixed to a step shaft provided in a step chain according to the present invention includes a step body, a cam that is pivotally supported by the step body, and the cam connected to the cam. A base cover that rotates toward the step body by contacting the step shaft and sandwiches the step shaft together with the step body; and is provided on one of the step body and the base cover. When the step shaft is sandwiched, a latch made of a rigid body that is detachably engaged with the other of the step main body and the cap lid is provided.

  The present invention includes a step main body, a cam pivotally supported by the step main body, and a cam coupled to the cam, and the cam rotates against the step main body side by contacting the step shaft, and the step main body and the step main body are rotated together. A base lid that sandwiches the shaft, and is provided on one of the step body and the base lid, and is detachably connected to the other of the step body and the base lid when the step shaft is sandwiched between the step body and the base lid. By adopting a configuration including a latch made of mating rigid bodies, it is possible to attach and detach the step shaft with a simple operation with a high safety factor using strong components and mechanisms.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a front view of a stepping device for a man conveyor according to Embodiment 1 of the present invention, FIG. 2 is a plan view of the stepping device for a man conveyor according to Embodiment 1 of the present invention, and FIG. 3 is Embodiment 1 of the present invention. FIG. 4 is a side view of the main part of the stepping device for the man conveyor in the first embodiment of the present invention, and FIG. 5 is the main portion of the stepping apparatus for the man conveyor in the first embodiment of the present invention. FIG. 6 is a side view showing the internal structure of the section, and shows a state before being attached to the step shaft, and FIG. 6 is a side view showing the internal structure of the main part of the step device of the man conveyor according to Embodiment 1 of the present invention. FIG. 7 is a perspective view of the cam and the cap of the step device of the man conveyor according to the first embodiment of the present invention, and FIG. FIG. 9 is a side view showing the catch, the first pressing spring, and the second pressing spring of the step device for the man conveyor in the first embodiment of the invention, and FIG. 9 is the drawing of the step device for the man conveyor in the first embodiment of the invention. FIG. 10 is a perspective view of the latch of the stepping device of the man conveyor according to the first embodiment of the present invention, and FIG. 11 is the first embodiment of the present invention. It is a front view of the attachment / detachment tool used when removing the step apparatus of the man conveyor in the from a step axis | shaft.

  FIG. 12 is a view showing a state immediately before the stepping device for the man conveyor according to the first embodiment of the present invention is attached to the step shaft. FIG. 13 shows the step device for the man conveyor according to the first embodiment of the present invention. FIG. 14 is a diagram showing a state in the middle of attachment to FIG. 14, a diagram showing a state after FIG. 12, and FIG. 14 shows a state in the middle of attaching the man conveyor stepping device according to Embodiment 1 of the present invention to the step shaft. FIG. 15 is a view showing a state after FIG. 13, and FIG. 15 is a view showing a state in which the step device of the man conveyor according to the first embodiment of the present invention is attached to the step shaft. FIG. 16 is a diagram showing a state after 14, and FIG. 16 is a diagram showing a state immediately before the step device of the man conveyor according to Embodiment 1 of the present invention is removed from the step shaft. These are the figures which showed the state which started the operation | movement which removes the step apparatus of the man conveyor in Embodiment 1 of this invention from a step axis | shaft, Comprising: The figure which showed the state after FIG. 16, FIG. It is the figure which showed the state in the middle of removing the step apparatus of the man conveyor in the form 1 of this invention from the step axis | shaft, Comprising: The figure which showed the state after FIG. 17, FIG. 19 is the figure of the man conveyor in Embodiment 1 of this invention. FIG. 20 is a diagram illustrating a state in the middle of removing the step device from the step shaft, and is a diagram illustrating a state after FIG. 18; FIG. 20 is a diagram illustrating that the step device of the man conveyor according to the first embodiment of the present invention is detached from the step shaft; FIG. 20 is a diagram illustrating a state after the state illustrated in FIG. 19.

  In the figure, 1 is a step body comprising a tread 2, a riser 3 and a bracket 4, 5 is a follower roller, 6 is provided on the bracket 4 just below one edge where the riser 3 of the tread 2 is not connected, Step shaft mounting portion protruding upwardly inclined toward the portion side, 7 is a cam pivotally supported on the bracket 4 via a pin 7a in the vicinity of the step shaft mounting portion 6, and 8 is a cap lid connected orthogonally to the cam 7. , 9 is provided on the lower surface of the step shaft attachment portion 6, and is provided in a semicircular upper holding groove that opens downward, 10 is provided on the base cover 8, and the base cover 8 is on the upper surface of the step shaft attachment portion 6 of the step body 1. This is a semicircular lower holding groove that opens upward in a closed state that is in a state of being in contact with (see FIGS. 1 to 4, etc.).

  The step device for the man conveyor having the above structure is detachably fixed to a plurality of step shafts 11 provided across a pair of step chains (not shown) arranged endlessly in a truss (not shown). It moves cyclically. That is, the step device is in a state where the cam 7 is horizontally arranged so as to extend from the pin 7a toward the one edge portion of the tread plate 2 (see FIG. 5), and is brought into contact with the step shaft 11 so that the base lid 8 is moved to the step shaft of the step body 1. By rotating to the attachment portion 6 side, the step body 1 and the base lid 8 are fixed in a state where the step shaft 11 is sandwiched between the upper holding groove 9 and the lower holding groove 10 (see FIG. 6).

  Here, 12 is a mounting hole having a rectangular cross section that is formed on one side of the tread plate 2 with respect to the lower holding groove 10 of the base lid 8 in the closed state and penetrates in the vertical direction perpendicular to the vertical surface. (See FIG. 7 etc.). On the side of the bottom edge of the tread plate 2 at the lower end of the mounting hole 12, there is an engaging portion provided with a riding surface that is inclined downward in a direction away from the mounting hole 12 and an engaging surface that is orthogonal to the lower surface of the base lid 8 from the lower edge portion of the riding surface 12a is formed.

  Further, 13 is housed in the step shaft mounting portion 6 of the bracket 4 with the center below the tread plate 2 and on the edge side of the tread plate 2 with respect to the upper holding groove 9, and the mounting hole 12 of the base lid 8 in the closed state at the lower portion. It is a latch which consists of a rigid body arrange | positioned so that it may penetrate from (refer FIGS. 8-10 etc.). In the latch 13, pins 14 provided on both side surfaces are slidably engaged with guide holes 6 a orthogonal to the upper and lower surfaces of the step shaft mounting portion 6 of the step body 1. Thereby, the latch 13 is configured to be movable in the vertical direction along the guide hole 6 a with respect to the step shaft mounting portion 6 of the step body 1 and rotatable about the pin 14.

  Further, a latch 13a is formed at the lower end of the latch 13 so as to protrude toward the one edge of the tread plate 2. The upper surface of the latch 13 a is formed so as to be inclined downward from one side surface of the latch 13 on the one side of the step 2, while the lower surface is formed from the other side surface of the latch 13 on the riser side 3. A hooking end is formed so as to be inclined upward and projecting upward at the intersection of the upper and lower surfaces. When the latch 13 is engaged with the base lid 8, the upper surface of the latch 13 a is brought into surface contact with the riding surface of the engaging portion 12 a of the base lid 8 and the hook end is brought into contact with the engaging portion 12 a of the base lid 8. By being engaged, a stable state is maintained (see FIGS. 4 and 6).

  Further, at the center of one side surface of the latch 13, a biased portion 13 b is formed that protrudes while being inclined upward toward one edge of the tread plate 2. Below this biased portion 13b, the first push spring 15 is disposed compressed in the longitudinal direction of the latch 13 while the second push spring 16 is disposed above it in a direction perpendicular to the longitudinal direction of the latch 13. It is arranged in a compressed state and is housed in the step shaft mounting portion 6 of the step body 1 (see FIGS. 5 and 6). That is, the latch 13 is constantly urged upward by the first pressing spring 15 on the lower surface of the biased portion 13b, and is constantly urged by the second pressing spring 16 at one side upper part above the pin 14 toward the riser 3 side. It becomes the composition which is done. In other words, the latch 13 is constantly biased in the direction in which the lower part moves toward the one edge of the tread plate 2, that is, in the engaging direction when engaging with the base cover 8.

  In addition, an operation portion 13c having a substantially L-shaped vertical projection surface is formed on the upper side of the other side surface of the latch 13 so as to extend toward the riser 3 and project an end upward. A tread hole 2a is formed in the tread plate 2 above the operation portion 13c. When removing the step device, the operating portion 13c of the latch 13 is operated by the attaching / detaching tool 17 (see FIG. 11) having a handle portion such as a substantially square shape inserted from above the tread hole 2a. The engagement of the catch 13 with the base lid 8 can be released.

  Next, the attaching and detaching operation of the step device configured as described above to the step shaft 11 will be described in more detail. The step device is attached and detached at an intermediate inclined portion of the truss. First, the base lid 8 is opened so that the cam 7 of the step device to be attached first protrudes toward the one edge of the tread plate 2. When the upper holding groove 9 of the step body 1 is moved downward so as to approach the step shaft 11 (see FIG. 12), the lower surface of the cam 7 comes into contact with the outer peripheral surface of the step shaft 11 and is pushed by the step shaft 11. The cam 7 is rotated around the pin 7a (see FIG. 13). When the step device is further moved downward, the lower surface of the latch 13a of the latch 13 (see A part in FIG. 10) abuts on the side edge (see B part in FIG. 7) of the tread plate 2 of the mounting hole 12. Is done. At this time, the latch 13 rotates so as to move the lower part toward the riser 3 around the pin 14 while resisting the restoring force of the first and second pressing springs 15 and 16 (see FIG. 14). Thereafter, the latch 13 passes through the mounting hole 12 from above, the lower surface of the step shaft mounting portion 6 and the upper surface of the cap 8 come into contact with each other, and the step shaft 11 is sandwiched between the upper holding groove 9 and the lower holding groove 10 (FIG. 15). reference). At this time, the latching end of the latch 13 a of the latch 13 gets over the riding surface of the engaging portion 12 a of the base lid 8 and engages with the engaging surface. This completes the installation of the first step device. Then, the attached step device is moved by driving the step chain, and all the step devices are attached to the step shaft 11 by sequentially repeating the procedure described above.

  On the other hand, when removing the first step device, first, the detachable tool 17 is passed through the tread hole 2a of the tread 2 from above (see FIG. 16). Then, the lower end of the detachable tool 17 is brought into contact with the upper surface of the operation portion 13c of the latch 13 (see FIG. 17). Thereafter, the latch 13 is pushed downward along the guide hole 6a while resisting the restoring force of the first pressing spring 15, and the latching end of the latch 13a is engaged with the engaging portion 12a of the base lid 8 Is released from the engagement (see FIG. 18). Next, the attaching / detaching tool 17 handle is moved to the riser 3 side with the riser 3 side edge of the tread hole 2a as a fulcrum, so that the upper portion of the latch 13 is moved to one edge of the tread 2 (see FIG. 19). . At this time, the latch 13 rotates about the pin 14 so that the lower part is moved to the riser 3 side. Thereby, the latch 13 is completely released from the engagement of the cap lid 8 with the engaging portion 12a. In this state, when the step device is moved upward, as the base lid 8 is rotated around the pin 7a, the lower portion of the latch 13 is removed from above the mounting hole 12 and the removal of the step device is completed. (See FIG. 19). The next step device is operated in the same manner as described above by manually operating the latch 13 from the space formed when the first step device is removed. Thereby, the latch 13 is completely released from the engagement of the base lid 8 with the engaging portion 12a without using the attaching / detaching tool 17, and the step device is removed.

  According to Embodiment 1 described above, since the latch 13 is made of a rigid body, the wear resistance of the sliding portion is greatly improved. For this reason, rattling of the step device due to wear due to sliding does not occur. In addition, since the latch 13 is pushed downward and the latch end of the latch 13a is released from the engagement of the base lid 8 with the engagement portion 12a, the more reliable wear countermeasure is taken. Not too long. Further, since there is no breakage due to sliding wear, the step body 1 and the base lid 8 are not detached, and the step device does not fall off from the step shaft 11. Furthermore, since the latch 13 is constantly urged in the direction of engagement when engaging the base lid 8, the safety factor is high. In addition, the attachment / detachment tool 17 is not particularly required when the step device is attached, and the attachment / detachment tool 17 may be used only at the first stage even when the step device is removed, which greatly saves labor. Furthermore, since the latch 13 rotates around the pin 14 during the attachment / detachment operation, the catch 13 is visually observed from above through the horizontal position of the operation portion 13c of the latch 13 through the tread hole 2a. It can be confirmed whether the latch 13 and the cap 8 are correctly engaged. Needless to say, even if the mounting hole 12 is provided in the step shaft mounting portion 6 and the latch 13 is provided in the base lid 8, a step device in which the wear resistance of the sliding portion is greatly improved is realized. .

Embodiment 2. FIG.
FIG. 21 is a side view showing the internal structure of the main part of the stepping device for the man conveyor according to the second embodiment of the present invention, and shows the state before the mounting to the step shaft, and FIG. 22 shows the embodiment of the present invention. It is the side view which showed the principal part internal structure of the step apparatus of the man conveyor in the form 2, Comprising: It is a figure which shows the state after the attachment to a step axis | shaft. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1, or an equivalent, and description is abbreviate | omitted.

  In the figure, 18 is a base lid formed in a substantially Ω-shaped vertical projection plane, 19 is one edge side of a footboard (not shown in FIGS. 21 and 22) than the lower holding groove 20 of the base lid 18 in the closed state. A mounting hole 21 having a rectangular cross section perpendicular to the upper and lower surfaces and penetrating in the vertical direction is a bracket (see FIG. 21 and FIG. This is a latch that is housed in the step shaft attachment portion 6 (not shown in FIG. 22) and is made of a rigid body that is disposed so as to penetrate the attachment hole 19 of the base lid 18 in the closed state from above. The catch 21 is pivotally supported on the step shaft mounting portion 6 of the step body (not shown in FIGS. 21 and 22) by pins 22 provided on both side surfaces. Thereby, the catch 21 is configured to be rotatable around the pin 22 with respect to the step shaft attachment portion 6 of the step body.

  Further, a latch 21a is formed at the lower end of the latch 21 so as to protrude toward one edge of the tread plate. The latch 21 a has a top surface formed in a horizontal plane, and a bottom surface formed in a curved surface inclined upward from one side surface of the latch 21. When the latch 21 is engaged with the base lid 18, a stable state is maintained by engaging the upper surface of the latch 21 a with the lower surface of the base lid 18.

  Further, on the riser (not shown in FIG. 21 and FIG. 22) side of the latch 21 below the pin 22, a third pressing spring 23 is horizontally compressed and disposed, while the step above the pin 22. 2 The fourth pressing spring 24 is arranged in the horizontal direction so as to be compressed in the horizontal direction, and is housed in the step shaft mounting portion 6 of the step body. That is, the latch 21 is constantly urged by the third pusher spring 23 on the other side of the riser below the pin 22 toward the edge of the tread plate, and is stepped above the pin 22 by the fourth pusher spring 24. One side surface arranged on the one edge side is constantly urged toward the riser side. In other words, the latch 21 is constantly biased in the direction in which the lower part moves toward the one edge of the tread plate, that is, in the engaging direction when engaging the base lid 18. In addition, an operation portion 21b extending to the riser side is formed at the upper end of the side surface of the catch 21. 21 and 22, the illustration of the cam is omitted.

  In this case, the attachment of the step device to the step shaft 11 is the same as in the first embodiment. On the other hand, the removal of the step device from the step shaft 11 does not cause the latch 21 to be pushed downward along the guide hole as in the first embodiment, and the latch 21 rotates around the pin 22. The lower part is moved to the riser side. Thereby, the catch 21 is completely released from engagement with the lower surface of the base lid 18. In this state, when the step device is moved upward, as the base lid 18 is rotated around the pin 25, the lower portion of the latch 21 is removed from above the attachment hole 19 and the removal of the step device is completed. .

  According to the second embodiment described above, in addition to the same effects as those of the first embodiment, the structure of the catch 21 can be simplified and an inexpensive step device can be configured.

It is a front view of the step device of the man conveyor in Embodiment 1 of this invention. It is a top view of the step apparatus of the man conveyor in Embodiment 1 of this invention. It is a side view of the step device of the man conveyor in Embodiment 1 of this invention. It is a principal part side view of the step apparatus of the man conveyor in Embodiment 1 of this invention. It is the side view which showed the principal part internal structure of the step apparatus of the man conveyor in Embodiment 1 of this invention, Comprising: It is a figure which shows the state before the attachment to a step axis | shaft. It is a side view which showed the principal part internal structure of the step apparatus of the man conveyor in Embodiment 1 of this invention, Comprising: It is a figure which shows the state after the attachment to a step axis | shaft. 1 is a perspective view of a cam and a cap of a stepping device for a man conveyor according to Embodiment 1 of the present invention. It is the side view which showed the catch, the 1st push spring, and the 2nd push spring of the step apparatus of the man conveyor in Embodiment 1 of this invention. It is the exploded view which showed the catch, the 1st pushing spring, and the 2nd pushing spring of the step device of the man conveyor in Embodiment 1 of this invention. FIG. 10 is a perspective view of the catch of the stepping device for the man conveyor according to the first embodiment of the present invention. It is a front view of the attachment / detachment tool used when removing the step apparatus of the man conveyor in Embodiment 1 of this invention from a step axis | shaft. It is the figure which showed the state just before attaching the step apparatus of the man conveyor in Embodiment 1 of this invention to a step axis | shaft. It is the figure which showed the state in the middle of attaching the step apparatus of the man conveyor in Embodiment 1 of this invention to a step axis | shaft, Comprising: It is the figure which showed the state after FIG. It is the figure which showed the state in the middle of attaching the step apparatus of the man conveyor in Embodiment 1 of this invention to a step axis, Comprising: It is the figure which showed the state after FIG. It is the figure which showed the state in which the step apparatus in Embodiment 1 of this invention was attached to the step axis | shaft, Comprising: It is the figure which showed the state after FIG. It is the figure which showed the state just before removing the step apparatus of the man conveyor in Embodiment 1 of this invention from a step axis | shaft. It is the figure which showed the state which started the operation | movement which removes the step apparatus of the man conveyor in Embodiment 1 of this invention from a step axis | shaft, Comprising: It is the figure which showed the state after FIG. It is the figure which showed the state in the middle of removing the step apparatus of the man conveyor in Embodiment 1 of this invention from a step axis | shaft, Comprising: It is the figure which showed the state after FIG. It is the figure which showed the state in the middle of removing the step apparatus of the man conveyor in Embodiment 1 of this invention from a step axis | shaft, Comprising: It is the figure which showed the state after FIG. It is the figure which showed the state from which the step device of the man conveyor in Embodiment 1 of this invention was removed from the step axis | shaft, Comprising: It is the figure which showed the state after FIG. It is a side view which showed the principal part internal structure of the step apparatus of the man conveyor in Embodiment 2 of this invention, Comprising: It is a figure which shows the state before the attachment to a step axis | shaft. It is a side view which showed the principal part internal structure of the step apparatus of the man conveyor in Embodiment 2 of this invention, Comprising: It is a figure which shows the state after the attachment to a step axis | shaft.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Step main body 2 Tread board 2a Tread hole 3 Riser 4 Bracket 5 Tracking roller 6 Step shaft attaching part 6a Guide hole 7 Cam 7a Pin 8 Cap lid 9 Upper holding groove 10 Lower holding groove 11 Step shaft 12 Mounting hole 12a Engaging part 13 Pull Latch 13a Latch 13b Energized portion 13c Operation portion 14 Pin 15 First push spring 16 Second push spring 17 Removable tool 18 Cap lid 19 Mounting hole 20 Lower holding groove 21 Latch 21a Latch 21b Operation portion 22 Pin 23 Third push Spring 24 4th push spring 25 pin

Claims (5)

In the step device of the man conveyor which is detachably fixed to the step shaft provided in the step chain,
The step body,
A cam pivotally supported on the step body;
A cap that is connected to the cam and rotates toward the step body when the cam abuts on the step shaft, and sandwiches the step shaft together with the step body;
A latch that is provided on one of the step main body and the base lid and is made of a rigid body that detachably engages the other of the step main body and the base lid when the step shaft is sandwiched between the step main body and the base lid. When,
A step device for a man conveyor characterized by comprising:   2. A stepping device for a man conveyor according to claim 1, wherein the hook is constantly urged in the direction of engagement with the other of the step body and the cap lid. The base cover has a mounting hole penetrating in the vertical direction in the closed state,
The hook is provided on a step main body, and when the step shaft is sandwiched between the step main body and the base lid, the latch penetrates the attachment hole from above and engages with the lower surface of the base lid. The step device of the described man conveyor.   The latch is disposed below the tread, and is released from engagement with the cap by being operated by a detachable tool inserted from above a tread hole formed in the tread. 3. A stepping device for a man conveyor according to 3.   5. A stepping device for a man conveyor according to claim 4, wherein the hook is always urged upward and is operated while being pushed downward when released from engagement with the cap.

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