JPS62269880A - Emergency brake gear for passenger conveyor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] This invention relates to an emergency braking device for a passenger conveyor such as an escalator or a moving passage.

[Conventional technology]

A conventional emergency braking system for a passenger conveyor similar to that shown in Japanese Patent Application Laid-Open No. 54-120186 will be described with reference to FIGS. 6 to 8.

In FIGS. 6 to 8, reference numeral 2 indicates a drive machine provided in the main frame 1 of the passenger conveyor, 3 indicates a main shaft supported by the main frame 1, and 3 indicates a main shaft supported by the main frame 1;
Reference numeral 4 denotes a drive [an endless drive system wrapped around the chain wheel 2a of 2 and the drive chain wheel 5 fitted and fixed to the main shaft 3; 6 indicates the main shaft 3;
This is a tread chain wheel that is fitted and fixed to the treadle chain wheel, and the drive device is composed of the above-mentioned parts. Reference numeral 7 denotes an endless tread chain wrapped around the tread chain wheel 6, and each tread chain 7 is connected to an endlessly connected tread plate 8. Then, the driving force is transmitted from the drive machine 2 to the main shaft 3 via the chain wheel 2a, the drives 4 and the iX drive chain wheel, and the main shaft 3 is rotated. The treadle 8 is run.

Further, 9 is a boss fitted and fixed to one end of the main shaft 3;
11 is a ring whose inner periphery is overlapped with the outer periphery of the boss 9 on the opposite side of the inner periphery of the boss 9, and 12 is a ring that is overlapped with the inner periphery of the boss 9 on the side opposite to the die wheel 10. 12 is the mold wheel 10 and ring 11 that form the boss 9. The fasteners 12 are comprised of bolts, nuts, etc., and are arranged at a plurality of locations in the inner circumferential direction of the mold wheel 10. Reference numeral 13 denotes an operating body whose one end 13a is slidably supported by the drive mirror 4, and whose other end 1.3b is pivotally supported by the main frame 1, facing the outer periphery of the mold wheel 10.

In the emergency braking device configured as described above, in an emergency such as when the drive mirror 4 breaks, the actuating body 13 changes from the solid line state to the chain line state in FIG. 6 and the end portion 13b engages with the model wheel 10. As a result, the model car 10 stops. When the model wheel 10 stops, the boss 9 fixed to the main shaft 3 is held between the ring 11 and the ring 11, so the main shaft 3 and the tread chain wheel 5 are gently braked and stopped by the frictional force of these, and the tread 8 is also gradually released. The safety of passengers is ensured by slowing down and stopping the train.

[Problem that the invention seeks to solve]

Conventional emergency braking devices for passenger conveyors are configured as described above, and the bosses that are fitted and fixed to the main shaft of the model car and drive device are overlapped, so the axial dimension of the main shaft is large and the installation space is required. In addition to being large, the model wheel and boss need to be punched out from different parts of the board.
There was a problem that there was a lot of wasted board material and the material cost was high. This invention solves the above-mentioned problems, reduces the dimension of the drive device in the direction of the main axis, reduces waste of plate material, reduces material cost, and provides stable braking force easily and is reliable. The purpose of this invention is to provide an emergency braking device for passenger conveyors with high performance.

[Means for solving problems]

(7) The emergency braking device for the passenger conveyor is composed of a type car that stops by engaging the actuating body in an emergency, and a boss whose outer diameter is smaller than the inner diameter of this type car and whose plate thickness is equal to that of the type car. are arranged on the same plane, the boss is fixed to the main shaft of the drive device, and the projections provided on the friction engagement body are engaged with the plurality of recesses formed on the outer periphery of the boss, and the friction engagement body is molded. It is fastened to the sides of the wheel and boss with a fastener, and is engaged with the model wheel by N friction.

[For production]

In the emergency braking device of the present invention, the mold wheel and the boss whose outer diameter is larger than the inner diameter of the mold wheel are arranged on the same plane, so that a compact drive device with small dimensions in the direction of the main axis of the drive device can be obtained. In addition, the outer diameter of the boss was made smaller than the inner diameter of the mold wheel, and the plate thicknesses of the boss and the mold wheel were made equal to each other, so the boss could be made using the plate material from the center side of the inner periphery of the mold wheel, which had previously been discarded. In addition, the protrusion provided on the friction engagement body that can be tightened to the side of the mold wheel and boss is engaged with the recess provided on the outer periphery of the boss. The protrusion serves as a stopper, causing the frictional engagement body and the boss to rotate together, and the rotation of the main shaft is braked by the frictional engagement between the frictional engagement body and the mold wheel, so that a stable braking force can be easily obtained.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In FIGS. 1 to 5, the same reference numerals as in FIGS. 6 to 8 indicate the same or corresponding parts, and in this embodiment,
The outer diameter of the boss 9 is made smaller than the inner diameter of the mold wheel 10, and the mold wheel 1
The plate thicknesses of the boss 9 and the boss 9 are made equal to each other, and these are arranged on the same perpendicular plane. A large number of recesses 9a are formed on the outer periphery of the boss 9 at regular intervals along the inner circumferential direction, and fan-shaped protrusions 14a of the friction engagement body 14 are engaged and supported in every other recess 9a. . A pair of friction engaging bodies 14
The protrusions 14a are arranged to face each other, and these protrusions 1
The bolt 12a of the fastener 12 is inserted through the bolt 12a, and the nut 12b is tightened through the spring washer 1.2c to the tip of the bolt 12a, so that the opposing surface of the friction engagement body 14 is connected to the inner circumference of the model wheel 10. and the side surfaces of the outer periphery of the boss, respectively. The configuration of this embodiment other than the above is the same as that shown in FIGS. 6 to 8.

In the emergency braking device of the embodiment configured as described above, in an emergency such as when the driving mirror 4 of the driving device is disconnected, the actuating body 1
3 meshes with the ratchet wheel 10 and the ratchet wheel 10 stops, the protrusion 14a of the friction engagement body 14 is locked to one end of the recess 9a of the boss 9 rotating together with the main shaft 3, etc., and the protrusion 14a
serves as a stopper, and the PJ rubbing body 14 rotates together with the boss 9, and the frictional engagement between these engaging bodies 14 and the side surface of the ratchet wheel 10 brakes the rotation of the main shaft. The speed of the treadle chain wheel 6° and the treadle chain 7 and the treadle gradually slow down and stop.

Then, the tightening force F due to the tightening force 12 of the frictional engagement body 14 is divided into a component force F on the ratchet 10 side and a component force F2 on the boss 9 side, where F, μ=÷''2 engagement body ( ], 4) The mold wheel holding torque per piece. Therefore, by appropriately increasing or decreasing the number of engaging bodies 4 according to the passenger load of a passenger conveyor such as an escalator, an appropriate 1 to 1 lux can be linearly achieved.

In the present invention, if the surface of the friction engaging body 14 that is slidably pressed into contact with the ratchet wheel 10 is subjected to a high frictional resistance treatment such as forming a mesh-like unevenness or increasing the hardness of the surface, the pawl can be improved. If the frictional holding force against the wheel 10 is increased, and if the frictional engaging body 14 is made of a material that is more susceptible to friction than the ratchet wheel 10, the engaging body will mainly wear out when the emergency braking device is activated, so only the worn engaging body will be removed. All you have to do is replace it, and the replacement is simple and economical.

〔Effect of the invention〕

As explained above, according to the present invention, the boss that is fitted and fixed to the main shaft of the drive device and the ratchet wheel that is stopped when the actuating body engages with each other in an emergency such as when cutting the drive device are placed on the same plane. , the dimension in the direction of the spindle axis can be reduced.
The installation space for the emergency braking device is small, and the outer diameter of the boss is smaller than the inner diameter of the ratchet wheel, and the plate thickness of the ratchet wheel and boss are made equal to each other, so the plate material closer to the center than the inner periphery of the ratchet wheel is made smaller. The boss can be made by using the material, and materials can be used effectively and the boss can be obtained at low cost.Furthermore, the protrusions of the friction engaging body can be tightened to the sides of the ratchet wheel and the boss, and the protrusions of the friction engagement body can be attached to the four parts provided on the outer periphery of the boss. Since the protrusions act as a stopper, the engaging body and the boss rotate together, and the rotation of the main shaft is restricted by the frictional engagement between the engaging body and the pawl.
Stable: Braking force can be easily obtained.

[Brief explanation of drawings]

i'g 1 Figure is a vertical view m1 showing an emergency braking system for a passenger conveyor according to an embodiment of the present invention, Figure 2 is a view taken along the line [-II] of Figure 1, and Figure 3 is an enlarged view of the main part of the tit Side view,
Figures 4 and 5 are cross-sectional views taken along lines ■-■cotton and V-■ in Figure 3, Figure 6 is a schematic side view showing a conventional emergency braking device for a passenger conveyor, and Figure 7 is a vertical cross-section of the same. FIG. 8 is a cross-sectional view taken along line 1--■ in FIG. 7 from FIG. 2 ・Driver, 3 ・Main shaft, 4 Drive mirror, 5 Drive chain wheel, 6 Tread chain wheel, 7 Tread chain, 8 Tread board, 9-Boss, 9
a recess, 10 ratchet wheel, 12 tightening tool, 13 operating body,
14 Frictional engaging body, ], 4 a Projection. In addition, the same reference numerals in the figures indicate the same or corresponding parts. Agent Masuo Oiwa (two others) Figure 2 Figure 3 Figure 41!1 Figure 5 Figure 6 Figure 7 Figure g/ ′

Claims (2)

[Claims] (1) It has a ratchet wheel that is stopped by the engagement of the operating body in an emergency, and a boss that is fitted and fixed to the main shaft of the drive device that drives the tread chain, and the outer diameter of the boss is larger than the inner diameter of the ratchet wheel. The friction engagement body is small and has a plate thickness equal to that of the ratchet wheel, and the ratchet wheel and boss are arranged on the same plane, and the friction engaging body is provided in a plurality of recesses formed along the circumferential direction on the outer periphery of the boss. An emergency braking device for a passenger conveyor, characterized in that the frictional engagement body is fastened to a side surface of a ratchet wheel and a boss by a fastener to frictionally engage the ratchet wheel. (2) The emergency braking device for a passenger conveyor according to claim 1, wherein the friction engagement body is subjected to a high friction resistance treatment such as forming a mesh-like unevenness on the surface that slides into contact with the ratchet wheel.