JP5371020B2 - Passenger conveyor moving handrail tensile force measuring jig - Google Patents

Description

  Embodiment of this invention is related with the jig | tool used in the case of the tensile force measurement of the moving handrail of a passenger conveyor.

  Conventionally, when a predetermined load is applied to the handrail of the passenger conveyor in the direction opposite to the moving direction, the operation of the passenger conveyor is stopped.

  And the maintenance worker of a passenger conveyor applies predetermined tensile force to the moving handrail of the passenger conveyor regularly, and confirms whether the moving handrail of a passenger conveyor is appropriate. The confirmation work at this time is performed using a dedicated jig while moving the moving handrail.

Japanese Patent Laid-Open No. 3-166195 JP-A-4-365788 JP 11-337391 A JP 2000-44159 A

  However, in the conventional measuring jig, after attaching the measuring jig to the stopped moving handrail, the moving handrail is operated and the tensile force is measured. Therefore, a sudden impact is applied to the maintenance worker during the measurement. In addition, since it is not easy to attach and detach, there is a risk that a maintenance worker may be in danger during measurement of the tensile force.

  Therefore, in the embodiment of the present invention, it is an object to provide a moving handrail tensile force measuring jig of a passenger conveyor having a configuration that is easy to attach / detach to / from a moving handrail and does not transmit a sudden impact to a maintenance worker. And

  In order to achieve the above object, a moving handrail tensile force measuring jig for a passenger conveyor according to an embodiment of the present invention is provided with a pair of gripping elements for sandwiching the moving handrail of a passenger conveyor from both sides, and the gripping element is attached. A pair of gripping bodies that are symmetrically extended from the center of the moving handrail to one side, respectively, and an opening / closing locus of the pair of gripping bodies at the upstream end in the moving direction of the moving handrail can be opened and closed in a fan shape. A connecting member that connects downstream ends of the moving handrail in the moving direction; and a protrusion provided at each of the upstream ends of the moving direction that can open and close the pair of gripping bodies. To do.

It is a schematic diagram which shows attachment of the measurement jig | tool to the moving handrail which concerns on the 1st Embodiment of this invention. It is a perspective view from the opening direction which shows the structure of the measurement jig | tool which concerns on the 1st Embodiment of this invention. It is a perspective view from the connection direction which shows the structure of the measurement jig | tool which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the holding element which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the open state in attachment of the measurement jig | tool which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the closed state in attachment of the measurement jig | tool which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the shape of the holding element which concerns on the 2nd Embodiment of this invention. It is a perspective view which shows the structure of the measurement jig | tool which concerns on the 3rd Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic view showing attachment of a measuring jig to a moving handrail according to the first embodiment of the present invention. Fig.2 (a) is a perspective view from the opening direction which shows the structure of the measuring jig based on the 1st Embodiment of this invention. FIG.2 (b) is a perspective view from the connection direction which shows the structure of the measuring jig concerning the 1st Embodiment of this invention. FIG. 3 is a perspective view showing the gripper according to the first embodiment of the present invention. FIG. 4 is a perspective view showing an open state in attaching the measuring jig according to the first embodiment of the present invention. FIG. 5 is a perspective view showing a closed state in attaching the measuring jig according to the first embodiment of the present invention.

  First, the usage method of the moving handrail tensile force measuring jig of the passenger conveyor which concerns on embodiment of this invention is demonstrated. As shown in FIG. 1, the measuring jig 1 includes gripping portions 2 a and 2 b having an L-shaped vertical section, and the moving handrail 3 is sandwiched from both sides by gripping portions 2 a and 2 b via grippers described later. It has become. The grip portions 2 a and 2 b have a protruding portion 5 provided with a notch portion (attachment portion) 4. In addition, a connecting member 11 for connecting the grip portions 2a and 2b is provided on the opposite side of the grip portions 2a and 2b from the hook member 6. With the connecting member 11 as the center, the gripping portions 2a and 2b can be opened and closed in a fan shape. Then, the connecting member 6 is attached to the notch 4 and pulled in the direction opposite to the moving direction of the moving handrail 3 by the tensile force measuring device 8 having the hook 7 hooked on the hooking member 6, in the direction A in FIG. By pulling in the A direction, the measuring jig 1 is closed to sandwich the moving handrail 3, and the tensile force measuring device 8 measures the tensile force of the moving handrail 3.

  Next, the configuration of the measuring jig 1 will be described in detail with reference to FIG. As shown in FIGS. 2 (a) and 2 (b), the measuring jig 1 includes gripping portions 2a and 2b having substantially L-shaped cross sections formed from side portions 9a and 9b and upper portions 10a and 10b, and upper surfaces 10a and 10b. It comprises a connecting member 11 for connecting a part of the end of the projection, and a protrusion 5 provided with a notch 4. The protruding portion 5 is provided on the upper surface 10a, 10b on the side opposite to the side on which the connecting member 11 is attached. The connecting member 11 connects the grip portions 2a and 2b by attaching hinges 11c to the plate-like members 11a and 11b provided at the ends of the upper portions 10a and 10b of the grip portions 2a and 2b, respectively.

  From the above configuration, the measuring jig 1 has a configuration in which the grip portions 2a and 2b can be opened and closed in a fan shape with the connecting member 11 as the center. That is, as shown in FIGS. 2A and 2B, the protruding portion 5 side of the grip portion 2 is configured to open and close. In the present embodiment, the state where the grip portions 2a, 2b are closed (see FIG. 1) is referred to as a closed state, and the state where the grip portions 2a, 2b are open (see FIG. 2) is referred to as an open state.

  In addition, grippers 12 that are in contact with the movable handrail 3 are provided on the inner sides of the side portions 9a and 9b of the grip portions 2a and 2b via fastening members 13, respectively. Specifically, holes for attaching fastening members 13 such as screws, bolts and nuts are formed in the side portions 9a and 9b of the holding portions 2a and 2b and the holding piece 12, respectively. Then, the gripping portions 2 a and 2 b and the hole portions of the gripper 12 are made to correspond to each other, and each is attached and fixed by the fastening member 13.

  As shown in FIG. 3, the contact surface of the gripper 12 is curved according to the shape of the moving handrail 3. Since the curved processing is performed in accordance with the shape of the moving handrail 3, the contact area between the moving handrail 3 and the grip 12 is increased. Moreover, since the curve process is made, the countersunk hole 14 for improving the sitting of the fastening member 13 is provided in the fastening part of the holding element 12. The gripper 12 is made of a material having a high frictional force so that slip does not occur when the measuring jig 1 holds the moving handrail 3 and pulls it in the direction opposite to the moving direction.

  Returning to FIG. 2B, the attachment position of the gripper 12 with respect to the grip portion 2 will be described. In the grip portion 2, the protruding portion 5 is provided on the upstream side of the moving handrail 3 in the moving direction, while the connecting member 11 is provided on the opposite side of the protruding portion 5, that is, on the downstream end in the moving direction of the moving handrail 3. The connecting member 11 is attached using a hinge 11c so that the gripping portions 2a and 2b can be opened and closed in a fan shape around the connecting portion.

  The gripper 12 is attached and fixed to the inner side of the side portion 9 of the grip portion 2 via a fastening member 13. Here, a predetermined distance d from the end portion on the side where the connecting member 11 is attached. A gripper 12 is attached to a location separated by a distance. A moving handrail escape space B is provided by being attached a predetermined distance d apart.

  This moving handrail escape space B is for avoiding the moving handrail 3 from being caught too much by the grippers 2a and 2b when the measuring jig 1 is in the open state. As described above, the tensile force of the moving handrail 3 can be measured by pulling the measuring jig 1 in the direction opposite to the moving direction of the moving handrail 3. At this time, the gripping portions 2 a and 2 b can measure the tensile force by sandwiching the moving handrail 3.

  That is, the distance between the gripping portions 2a and 2b when the gripping portions 2a and 2b are in the closed state and the lateral width of the movable handrail 3 are substantially the same. As can be seen from this, when the grip 12 is attached to the grip 2 without providing the predetermined distance d, when the grips 2a and 2b are in the open state, the end of the grip 12 on the side of the connecting member 11 The distance between the gripping portions 2a and 2b becomes shorter.

  Therefore, if the gripper 12 is attached to a location separated by a predetermined distance d from the end portion on the side of the connecting member 11, the gripper 12 is within the predetermined opening angle even when the gripping portions 2 a and 2 b are opened. The distance between the end portions on the connecting member 11 side is not shortened. Thereby, it becomes possible to avoid that the moving handrail 3 is caught too much.

  The allowable opening angle of the gripping portions 2a and 2b is such that the allowable opening angle increases as the attachment position of the gripping member 12 in the gripping portions 2a and 2b increases from the end of the connecting member 11 side, that is, as the predetermined distance d increases. .

  Next, the action of the tensile force measuring jig according to the present embodiment will be described with reference to FIGS.

  First, at the time of maintenance inspection, the driving of the moving handrail 3 is stopped. Then, the maintenance worker attaches the measuring jig 1 to the stopped moving handrail 3. At this time, as shown in FIG. 4, the measuring jig 1 is attached in an open state. After the measuring jig 1 is attached to the moving handrail 3, the ring-shaped hook member 6 is attached to the notch 4 provided in the protrusion 5. Next, the hook 7 provided in the tensile force measuring device 8 which is an external device is hooked on the hook member 6.

  After that, the maintenance worker restarts driving of the handrail 3. At this time, when the driving of the moving handrail 3 is resumed, it is desirable that the gripper 12 of the measuring jig 1 attached in an open state is not in contact with the moving handrail 2. This is because when the movable handrail 3 is driven while the gripper 12 is in contact with the movable handrail 3, a sudden impact is applied to the maintenance worker.

  After restarting the driving of the moving handrail 3, the maintenance worker pulls the tensile force measuring device 8 in the direction opposite to the moving direction of the moving handrail 3. Then, when the hook member 6 is ring-shaped, force is applied to the gripping portions 2a and 2b in a direction approaching each other. That is, as shown in FIG. 5, the measuring jig 1 is closed by pulling the measuring jig 1 in the direction opposite to the moving direction of the moving handrail 3.

  When the measuring jig 1 is in the closed state, the grip 12 provided in the grip 2 hits the side of the moving handrail 3 and sandwiches the moving handrail 3 from both sides. Then, the moving handrail 3 is stopped by pulling the measuring jig 1 against the driving force of the moving handrail 3. The maintenance worker measures the load value at this time with the measuring jig 1.

  Then, after measuring the driving force of the moving handrail 3, the moving handrail 3 and the gripper 12 repel each other due to the elasticity of each other by loosening the force by which the maintenance worker pulls the measuring jig 1, and the gripping portion 2a, 2b is opened like a fan around the connecting member 11. At this time, by having the movable handrail escape space B, the gripper 12 and the movable handrail 3 do not come into contact with each other when the measurement jig 1 is in an open state, and the measurement jig 1 is pulled away from the movable handrail 3. It becomes possible.

  As described above, the tensile force measuring jig according to the present embodiment can be easily attached to and detached from the moving handrail 3, and a sudden impact is applied to the maintenance worker even when measuring the tensile force. Can be prevented.

  In the present embodiment, the driving jig 3 is stopped using the measuring jig 1 and the load value at that time is measured. However, the present invention is not limited thereto, and the moving jig 1 is moved using the measuring jig 1. The usage method which measures the driving force of the handrail 3 may be sufficient. That is, it can be used to confirm that the moving handrail 3 does not stop when a predetermined load is applied.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. FIG. 6 is a configuration diagram showing the shape of the gripper according to the second embodiment of the present invention. The shape of the gripper according to the present embodiment is characterized in that the operation of the movable handrail 3 can be continued even when the movable handrail 2 and the gripper are in contact with each other when the measuring jig 1 is opened. It is said. That is, this is effective in that the moving handrail 3 can be leveled after the tensile force measuring jig is attached to the moving handrail 3. This will be specifically described below. Note that description of parts having the same configuration, such as the gripping part 2 and the protruding part 5 described in the first embodiment, is omitted.

  As shown in FIG. 6, the grip 15 according to the present embodiment has a configuration including a horizontal portion 16 that is horizontal with respect to the longitudinal direction of the moving handrail 3 and an inclined portion 17 having an inclination angle α. A horizontal portion 16 is formed on the upstream side of the moving handrail 3 in the moving direction, and an inclined portion 17 is formed on the downstream side of the moving direction. Moreover, the material of the horizontal part 16 is a material with a high frictional force with respect to the moving handrail 3 similarly to the holding element 12 which concerns on the above-mentioned 1st Embodiment. On the other hand, the material of the inclined portion 17 is a material having a low frictional force unlike the horizontal portion 16.

Next, the operation of the tensile force measurement device according to this embodiment will be described. Note that the description of the operation similar to that of the above-described first embodiment is omitted unless particularly necessary.

  First, the maintenance worker attaches the measuring jig 1 to the moving handrail 3 in an open state. When attached in the open state, the horizontal portion 16 of the measuring jig 1 is inclined with respect to the longitudinal direction of the movable handrail 3, while the inclined portion 17 is horizontal with respect to the longitudinal direction of the movable handrail 3. When the measuring jig 1 is in an open state, the inclined portion 17 may be in contact with the side surface of the moving handrail 3.

  In this case, since the inclined portion 17 is made of a material having a low frictional force, even when the movable handrail 3 and the grip 15 are in contact with each other when the movable handrail 3 is driven to measure the tensile force, Sudden impact is not transmitted to maintenance workers.

  Further, since the grip 15 has the inclined portion 17, when the grip 15 is attached to the inside of the side portion 9 of the grip 2, the connecting member 11 is compared with the case of the first embodiment described above. It is possible to reduce the distance from the end on the side where the is attached, that is, the predetermined distance d. As a result, the measuring jig 1 itself can be downsized.

(Third embodiment)
Next, a third embodiment of the present invention will be described. FIG. 7 is a perspective view showing a configuration of a measuring jig according to the third embodiment of the present invention. In this embodiment, it is set as the structure which replaces with the hinge used by the structure of the connection member in the above-mentioned 1st Embodiment, and uses a spring hinge. This will be specifically described below.

  As shown in FIG. 7, the connecting portions of the grip portions 2a and 2b in the present embodiment are provided in the grip portions 2a and 2b so that the plate-like members 11a and 11b face each other. That is, when the measuring jig 1 is in the closed state, the surfaces are arranged so that the surfaces thereof are in contact with each other. And in order to connect the surfaces, the spring hinge 18 is attached to the plate-shaped members 11a and 11b. The spring hinge 18 is biased so that the measuring jig 1 is kept open.

  Then, as in the first embodiment, when the tensile force measuring device 8 is attached to the notch 4 of the protrusion 5 and pulled, the spring hinge 18 also operates in the closing direction so that the measuring jig 1 is closed. .

  With the above configuration, when the maintenance worker attaches the measuring jig 1 to the moving handrail 3, the maintenance worker is always in an open state, so that the attachment is easy.

DESCRIPTION OF SYMBOLS 1 ... Measuring jig 2 ... Holding part 3 ... Moving handrail 4 ... Mounting hole 5 ... Protruding part 6 ... Hook member 7 ... Hook 8 ... Tensile force measuring device 9 ... Side part 10 ... Upper part 11 ... Connecting member 12, 15 ... Gripping Child 13 ... Fastening member 14 ... Counterbore 16 ... Horizontal part 17 ... Inclined part 18 ... Spring hinge

Claims (6)

A pair of grippers that sandwich the moving handrail of the passenger conveyor from both sides;
A pair of gripping bodies to which the gripping element is attached and each of which is symmetrically extended from the center of the moving handrail to the one side;
A connecting member that connects the downstream end of the moving handrail in the moving direction so that the opening and closing locus of the moving handrail in the moving direction upstream end of the pair of gripping bodies can be opened and closed in a fan shape;
Protrusions provided at the upstream ends in the movement direction, which are capable of opening and closing the pair of gripping bodies,
A moving handrail tensile force measuring jig characterized by comprising:   2. The urging member for maintaining a state in which the end of the gripper is open in a fan shape when no load is applied to the moving handrail tensile force measuring jig. Moving handrail tensile force measuring jig.   The moving handrail tensile force measuring jig according to claim 1, wherein an attachment portion to which an external device for measuring the tensile force of the moving handrail is attached is formed on the protruding portion.   4. The moving handrail according to claim 3, wherein the pair of gripping bodies are closed by pulling the protruding portion in a direction opposite to a moving direction of the moving handrail, and the moving handrail is sandwiched between the gripping elements. Tensile force measuring jig.   The gripper includes a horizontal portion that is horizontal with respect to a longitudinal direction of the moving handrail, and an inclined portion that is inclined so as to approach the moving handrail along a moving direction of the moving handrail. The moving handrail tensile force measuring jig according to claim 1.   The moving handrail tensile force measuring jig according to claim 5, wherein the horizontal portion has a larger frictional force with respect to the moving handrail than the inclined portion.

Images