JP6832791B2 - Escalator emergency braking device - Google Patents

Description

The present invention relates to an escalator emergency braking device that prevents rotation of the spindle when the drive chain breaks.

Conventionally, a shaft rotatably supported by a bracket fixed to a brake beam, a shoe lever provided at one end of the shaft, a shoe supported by the shoe lever and mounted on a drive chain, and other shafts. An escalator emergency braking device provided at an end and provided with a ratchet pole that is displaced between a meshing position that meshes with the ratchet wheel and a release position that is separated from the ratchet wheel by rotating a shaft is known. When the drive chain breaks, the shoe descends due to its own weight, and the shoe lever rotates about the shaft. As a result, the shaft rotates and the ratchet pole is displaced from the release position to the meshing position. As a result, the rotation of the ratchet wheel is stopped, and the rotation prevents the rotation of the spindle in which the step is circulated (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-201611

However, if the shaft cannot rotate smoothly with respect to the brake beam due to a decrease in the oil supplied to the shaft, the ratchet pole will move from the release position to the meshing position even if the drive chain is broken. It cannot be displaced and the rotation of the ratchet wheel cannot be stopped. As a result, there is a problem that the rotation of the spindle cannot be prevented.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an escalator emergency braking device capable of more reliably blocking the rotation of the spindle.

Escalator emergency braking apparatus according to the present invention, the drive chain is broken, when the shoe lever is pivoted, escalator very ratchet pawl which is fixed to the shaft to rotate in conjunction with the rotation of the shoe lever meshes with the ratchet wheel It is a braking device and is provided with a weight support member that displaces in conjunction with the rotation of the shoe lever and an auxiliary weight supported by the weight support member. The auxiliary weight is a weight support member that supports the auxiliary weight. In this case, when the weight support member is displaced without pushing the shoe lever and the support of the auxiliary weight by the weight support member is released, the shoe lever is pushed in the direction in which the ratchet pole meshes with the ratchet wheel.
In the escalator emergency braking device according to the present invention, when the drive chain breaks and the shoe lever rotates, the ratchet pole fixed to the shaft that rotates in conjunction with the rotation of the shoe lever meshes with the ratchet wheel. A braking device, a weight support member that is displaced in conjunction with the rotation of the shoe lever, an auxiliary weight supported by the weight support member, and a weight holding member that is supported by the shoe lever and supports the weight support member. When the weight support member is displaced and the support of the auxiliary weight by the weight support member is released, the auxiliary weight pushes the shoe lever in the direction in which the ratchet pole meshes with the ratchet wheel, and the shoe lever rotates. In that case, the support of the weight holding member by the shoe lever is released, and the support of the weight supporting member by the weight holding member is released, so that the weight supporting member is displaced and the support of the auxiliary weight by the weight supporting member is released. Will be done.

According to the escalator emergency braking device according to the present invention, the auxiliary weight is shoeed in a direction in which the ratchet pole meshes with the ratchet wheel when the weight support member is displaced and the support of the auxiliary weight by the weight support member is released. By pushing the lever, the rotation of the ratchet wheel can be stopped more reliably. As a result, the rotation of the spindle can be prevented more reliably.

It is a front view which shows the escalator emergency braking device which concerns on Embodiment 1 of this invention. It is a side view which shows the escalator emergency braking device of FIG. It is a figure explaining the operation of the escalator emergency braking device when the drive chain of FIG. 2 is broken. It is a block diagram which shows the escalator emergency braking device which concerns on Embodiment 2 of this invention.

Embodiment 1.
FIG. 1 is a front view showing the escalator emergency braking device according to the first embodiment of the present invention, and FIG. 2 is a side view showing the escalator emergency braking device of FIG. In the figure, the escalator emergency braking device according to the first embodiment of the present invention includes a brake beam 1 fixed to a main frame (not shown), a plurality of brackets 2 fixed to the brake beam 1, and a plurality of brackets 2. Each bracket 2 is provided with a shaft 3 rotatably supported. The shaft 3 is arranged so as to extend in the width direction of the main frame.

Further, this escalator emergency braking device is attached to an angle adjusting bracket 4 fixed to one end of the shaft 3 in the longitudinal direction, a shoe lever 6 attached to the angle adjusting bracket 4 using a bolt 5, and a shoe lever 6. It includes a shoe 8 that is supported and mounted on a drive chain 7, a ratchet pole 9 that is fixed to the other end of the shaft 3 in the longitudinal direction, and a ratchet wheel 10 that rotates with a spindle (not shown).

The mounting angle of the shoe lever 6 with respect to the angle adjusting bracket 4 can be arbitrarily adjusted. The shoe lever 6 is removed from the angle adjusting bracket 4 by removing the bolt 5 from the angle adjusting bracket 4 and the shoe lever 6. When checking the displacement of the ratchet pole 9, the shoe lever 6 is removed from the angle adjusting bracket 4.

The ratchet pole 9 is displaced between the meshing position where the ratchet pole 9 meshes with the ratchet wheel 10 and the release position away from the ratchet wheel 10 due to the rotation of the shaft 3. When the position of the ratchet pole 9 is the meshing position, the rotation of the ratchet wheel 10 is stopped and the rotation of the spindle is prevented. As a result, the circular movement of the steps (not shown) is stopped. On the other hand, when the position of the ratchet pole 9 is the release position, the ratchet wheel 10 can rotate together with the spindle. As a result, the steps can be circularly moved.

As the shoe lever 6 rotates about the shaft 3, the ratchet pole 9 is displaced between the meshing position and the disengaging position. The shoe 8 is not supported by the drive chain 7 when the drive chain 7 is broken. As a result, the shoe 8 descends due to its own weight. When the shoe 8 descends, the shoe lever 6 rotates about the shaft 3. When the shaft 3 rotates together with the shoe lever 6 as the shoe 8 descends, the ratchet pole 9 is displaced from the release position to the meshing position. As a result, the circular movement of the steps is stopped.

Further, this escalator emergency braking device further includes a rotation assisting device 11 that assists the rotation of the shoe lever 6 when the drive chain 7 breaks. The rotation assist device 11 includes a first rotation shaft 111 provided in the drive machine housing 12 which is a support device, a rod-shaped weight support member 112 provided on the first rotation shaft 111, and a weight support member. It is provided with an auxiliary weight 113 provided on the 112. The first rotation shaft 111 is connected to one end of the weight support member 112 in the longitudinal direction. An auxiliary weight 113 is fixed to the other end of the weight support member 112 in the longitudinal direction. Therefore, when the weight support member 112 rotates around the first rotation shaft 111, the auxiliary weight 113 rotates around the first rotation shaft 111.

Further, the rotation assist device 11 includes a second rotation shaft 114 provided in the drive machine housing 12, a rod-shaped weight pressing member 115 provided on the second rotation shaft 114, and one end of the drive machine. It is provided with a tension spring 116 which is an urging member connected to the housing 12 and the other end thereof is connected to the weight pressing member 115. One end of the weight pressing member 115 in the longitudinal direction is mounted on the shoe lever 6. A longitudinal intermediate portion of the weight support member 112 is placed on the other end of the weight pressing member 115 in the longitudinal direction.

A groove 115a having a curved inner peripheral surface is formed at one end of the weight pressing member 115 in the longitudinal direction. A groove 115b having a curved inner peripheral surface is formed at the other end of the weight pressing member 115 in the longitudinal direction.

Further, the rotation assisting device 11 further includes a pin 6a provided on the shoe lever 6 and a pin 112a provided on the weight support member 112. When one end of the weight pressing member 115 in the longitudinal direction is placed on the shoe lever 6, the pin 6a is inserted into the groove 115a. The inner peripheral surface of the groove 115a is made of a material that is slippery with respect to the pin 6a. A plurality of rollers may be provided on the inner peripheral surface of the groove 115a so that the pin 6a can easily move in the groove 115a. When the longitudinal intermediate portion of the weight support member 112 is placed on the other end in the longitudinal direction of the weight pressing member 115, the pin 112a is inserted into the groove 115b. The inner peripheral surface of the groove 115b is made of a material that is slippery with respect to the pin 112a. A plurality of rollers may be provided on the inner peripheral surface of the groove 115b so that the pin 112a can easily move in the groove 115b.

The tension spring 116 generates a force in the direction in which the weight pressing member 115 rotates around the second rotation shaft 114 in the weight pressing member 115.

Next, the operation of this escalator emergency braking device will be described. FIG. 3 is a diagram illustrating the operation of the escalator emergency braking device when the drive chain 7 of FIG. 2 is broken. When the drive chain 7 is broken, the shoe 8 mounted on the drive chain 7 is not supported by the drive chain 7, so that the shoe 8 is lowered by its own weight. As a result, the shoe lever 6 rotates about the shaft 3. When the shoe lever 6 rotates about the shaft 3, the shoe lever 6 separates from one end of the weight holding member 115 in the longitudinal direction. In other words, the pin 6a is pulled out of the groove 115a.

When the shoe lever 6 is separated from one end of the weight holding member 115 in the longitudinal direction, the weight holding member 115 is rotated about the second rotation shaft 114 by the tension spring 116. The direction in which the weight pressing member 115 rotates is the direction in which the other end of the weight pressing member 115 in the longitudinal direction is separated from the first rotation shaft 111, and is the direction of arrow A in FIG.

When the weight pressing member 115 rotates about the second rotation shaft 114, the other end of the weight pressing member 115 in the longitudinal direction is separated from the weight supporting member 112. In other words, the pin 112a is pulled out of the groove 115b. As a result, the weight support member 112 rotates about the first rotation shaft 111. The direction in which the weight support member 112 rotates is the direction in which the other end of the weight support member 112 in the longitudinal direction descends, and is the direction indicated by the arrow B in FIG.

When the weight support member 112 rotates about the first rotation shaft 111, the auxiliary weight 113 is lowered, and the auxiliary weight 113 hits the shoe lever 6 from above. In other words, the auxiliary weight 113 pushes the shoe lever 6 in the direction in which the ratchet pole 9 meshes with the ratchet wheel 10. As a result, the rotation of the shoe lever 6 is assisted. As a result, the shaft 3 rotates more reliably, and the ratchet pole 9 is more reliably displaced from the release position to the meshing position.

Next, a method of maintenance and inspection of this escalator emergency braking device will be described. Here, a direction for checking that the ratchet pole 9 is displaced from the release position to the meshing position without using the rotation assist device 11 will be described. First, in order to prevent the weight support member 112 from rotating about the first rotation shaft 111, a pin (not shown) is fixed to the drive machine housing 12. This pin is arranged so that the intermediate portion in the longitudinal direction of the weight support member 112 is supported by the pin.

After that, the shoe lever 6 is removed from the angle adjusting bracket 4. As a result, the angle adjusting bracket 4 rotates about the shaft 3 due to its own weight, and the shaft 3 rotates. As the shaft 3 rotates, the ratchet pole 9 is displaced from the release position to the meshing position. As a result, the rotation of the ratchet wheel 10 is blocked, and the rotation of the spindle is blocked.

As described above, according to the escalator emergency braking device according to the first embodiment of the present invention, the weight support member 112 that is displaced in conjunction with the rotation of the shoe lever 6 and the auxiliary supported by the weight support member 112. The auxiliary weight 113 is provided with the auxiliary weight 113 in a direction in which the ratchet pole 9 meshes with the ratchet wheel 10 when the weight support member 112 is displaced and the support of the auxiliary weight 113 by the weight support member 112 is released. Since the shoe lever 6 is pushed, the rotation of the ratchet wheel 10 can be stopped more reliably. As a result, the rotation of the spindle can be prevented more reliably.

Further, this escalator emergency braking device further includes a first rotation shaft 111 connected to one end in the longitudinal direction of the weight support member 112, and the auxiliary weight 113 is connected to the other end in the longitudinal direction of the weight support member 112. Since the weight support member 112 rotates about the first rotation shaft 111 in conjunction with the rotation of the shoe lever 6, the auxiliary weight 113 can push the shoe lever 6 with a simple configuration. it can.

Further, this escalator emergency braking device further includes a weight pressing member 115 that is supported by the shoe lever 6 and supports the weight supporting member 112, and supports the weight pressing member 115 by the shoe lever 6 when the shoe lever 6 rotates. Is released, and the support of the weight support member 112 by the weight holding member 115 is released, so that the weight support member 112 is displaced and the support of the auxiliary weight 113 by the weight support member 112 is released. Then, the auxiliary weight 113 can push the shoe lever 6.

Further, this escalator emergency braking device further includes a second rotation shaft 114 connected to the intermediate portion in the longitudinal direction of the weight pressing member 115, and the weight pressing member 115 rotates about the second rotation shaft 114. As a result, the support of the weight support member 112 by the weight pressing member 115 is released, so that the weight support member 112 can be rotated with a simple configuration.

Further, this escalator emergency braking device further includes a tension spring 116 that generates a force in the direction in which the weight pressing member 115 rotates about the second rotating shaft 114 on the weight pressing member 115, so that the weight pressing member 115 is more reliably provided. , The weight holding member 115 can be rotated.

Embodiment 2.
FIG. 4 is a block diagram showing an escalator emergency braking device according to a second embodiment of the present invention. The escalator emergency braking device according to the second embodiment of the present invention includes a weight rotation detection device 117 that detects the rotation of the auxiliary weight 113, a pole rotation detection device 118 that detects the rotation of the ratchet pole 9. It is further provided with a notification device 119 that issues a report to an external information center based on the detection result of the weight rotation detection device 117 and the detection result of the pole rotation detection device 118.

The weight rotation detection device 117 is attached to the drive machine housing 12. The weight rotation detection device 117 detects the rotation of the auxiliary weight 113 by detecting the rotation of the weight support member 112. The weight rotation detection device 117 may directly detect the rotation of the auxiliary weight 113 without the intervention of the weight support member 112.

The pole rotation detection device 118 is attached to the brake beam 1. The pole rotation detection device 118 detects the rotation of the ratchet pole 9 by detecting the rotation of the shaft 3. The pole rotation detection device 118 may detect the rotation of the ratchet pole 9 via the rotation of the angle adjusting bracket 4, the shoe lever 6, or the shoe 8. Further, the pole rotation detection device 118 may directly detect the rotation of the ratchet pole 9 without the rotation of the shaft 3. Other configurations are the same as those in the first embodiment.

Next, the operation of this escalator emergency braking device will be described. Here, a case where the drive chain 7 is not broken and the auxiliary weight 113 is rotated will be described. It is conceivable that the escalator may vibrate and one end of the weight holding member 115 in the longitudinal direction may be separated from the shoe lever 6. In this case, since the drive chain 7 is not broken, the position of the ratchet pole 9 remains the released position.

When one end of the weight pressing member 115 in the longitudinal direction is separated from the shoe lever 6, the weight pressing member 115 rotates about the second rotation shaft 114. As a result, the other end of the weight pressing member 115 in the longitudinal direction is separated from the weight supporting member 112, and the weight supporting member 112 rotates about the first rotation shaft 111. As a result, the auxiliary weight 113 is lowered, and the auxiliary weight 113 hits the shoe lever 6 from above. In this case, the frictional force generated between the shoe lever 6 and the drive chain 7 is larger than that in the case where the auxiliary weight 113 does not rotate.

The alarm device 119 notifies the information center when the weight rotation detection device 117 detects the rotation of the auxiliary weight 113 and the pole rotation detection device 118 does not detect the rotation of the ratchet pole 9. To do. When the information center is notified, the maintenance worker releases the auxiliary weight 113 from the shoe lever 6 and returns the auxiliary weight 113 to its original position. As a result, it is possible to shorten the period in which the frictional force generated between the shoe lever 6 and the drive chain 7 is increased.

As described above, according to the escalator emergency braking device according to the second embodiment of the present invention, the weight rotation detection device 117 for detecting the rotation of the auxiliary weight 113 and the rotation of the ratchet pole 9 are detected. It further includes a pole rotation detection device 118, and a notification device 119 that issues a report to an external information center based on the detection result of the weight rotation detection device 117 and the detection result of the pole rotation detection device 118. Therefore, the period of malfunction of the escalator emergency braking device can be shortened.

In the second embodiment, the configuration for issuing a report to the external information center based on the detection result of the weight rotation detection device 117 and the detection result of the pole rotation detection device 118 has been described. The operation of the escalator may be stopped based on the detection result of the detection device 117 and the detection result of the pole rotation detection device 118.

Further, in each of the above embodiments, when the shoe lever 6 is separated from one end in the longitudinal direction of the weight pressing member 115, the direction in which the weight pressing member 115 rotates is the direction in which the other end in the longitudinal direction of the weight pressing member 115 is the first. Although the configuration in which the weight is separated from the rotation shaft 111 has been described, the configuration may be such that the other end of the weight pressing member 115 in the longitudinal direction approaches the first rotation shaft 111.

Further, in each of the above embodiments, the configuration in which the auxiliary weight 113 pushes the shoe lever 6 while contacting the shoe lever 6 has been described, but the present invention is not limited to this, and the auxiliary weight 113 is the angle adjusting bracket 4 or the shoe 8. The shoe lever 6 may be pushed via the angle adjusting bracket 4 or the shoe 8.

Further, in each of the above embodiments, the configuration in which the support device to which the rotation assist device 11 is attached is the drive machine housing 12 has been described, but the present invention is not limited to this, and for example, the support device is a wall of the main frame. May be good.

Further, in each of the above embodiments, the tension spring 116 has been described as an example of the urging member for generating the force in the direction in which the weight pressing member 115 rotates on the weight pressing member 115, but the present invention is not limited to this, and for example, compression. It may be a spring.

Further, in each of the above embodiments, the configuration in which the weight support member 112 and the auxiliary weight 113 are displaced with the displacement of the weight holding member 115 has been described, but the present invention is not limited to this, and the weight is not limited to this. The support member 112 and the auxiliary weight 113 may be displaced.

1 Braking beam, 2 brackets, 3 axes, 4 angle adjustment brackets, 5 bolts, 6 shoe levers, 6a pins, 7 drive chains, 8 shoes, 9 ratchet poles, 10 ratchet wheels, 11 rotation assist devices, 12 drives Machine housing (support device), 111 1st rotation shaft, 112 weight support member, 112a pin, 113 auxiliary weight, 114 2nd rotation shaft, 115 weight holding member, 115a, 115b groove, 116 tension spring (with Force member), 117 weight rotation detection device, 118 pole rotation detection device, 119 alarm device.

Claims (6)

An escalator emergency braking device in which a ratchet pole fixed to a shaft that rotates in conjunction with the rotation of the shoe lever meshes with the ratchet wheel when the drive chain breaks and the shoe lever rotates.
A weight support member that displaces in conjunction with the rotation of the shoe lever,
With an auxiliary weight supported by the weight support member,
When the weight support member supports the auxiliary weight, the auxiliary weight does not push the shoe lever, the weight support member is displaced, and the support of the auxiliary weight by the weight support member is released. An escalator emergency braking device that pushes the shoe lever in a direction in which the ratchet pole meshes with the ratchet wheel. A first rotation shaft connected to one end in the longitudinal direction of the weight support member is further provided.
The auxiliary weight is connected to the other end in the longitudinal direction of the weight support member.
The escalator emergency braking device according to claim 1, wherein the weight support member rotates about the first rotation shaft in conjunction with the rotation of the shoe lever. A weight pressing member supported by the shoe lever and supporting the weight supporting member is further provided.
When the shoe lever rotates, the support of the weight holding member by the shoe lever is released, and the support of the weight supporting member by the weight pressing member is released, so that the weight supporting member is displaced. The escalator emergency braking device according to claim 1 or 2, wherein the support of the auxiliary weight by the weight support member is released. A second rotation shaft connected to the intermediate portion in the longitudinal direction of the weight pressing member is further provided.
The escalator emergency braking device according to claim 3, wherein the support of the weight support member by the weight pressing member is released by rotating the weight pressing member around the second rotation shaft. The escalator emergency braking device according to claim 4, further comprising an urging member that generates a force in a direction in which the weight pressing member rotates about the second rotation shaft in the weight pressing member. An escalator emergency braking device in which a ratchet pole fixed to a shaft that rotates in conjunction with the rotation of the shoe lever meshes with the ratchet wheel when the drive chain breaks and the shoe lever rotates.
A weight support member that displaces in conjunction with the rotation of the shoe lever,
Auxiliary weights supported by the weight support member ,
It is provided with a weight pressing member that is supported by the shoe lever and supports the weight supporting member.
Said auxiliary weights, said weight supporting member is displaced, when the support of the auxiliary sinker by the weight supporting member is released, the shoe lever press in a direction in which the ratchet pawl meshes with the ratchet wheel,
When the shoe lever rotates, the support of the weight holding member by the shoe lever is released, and the support of the weight supporting member by the weight pressing member is released, so that the weight supporting member is displaced. An escalator emergency braking device in which the support of the auxiliary weight by the weight support member is released.

Images