JP3261976B2 - Passenger conveyor equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger conveyor device which is braked when an operation speed exceeds a predetermined value, such as an escalator and a moving passage.

[0002]

2. Description of the Related Art A driving machine is arranged in a machine room at an end of a main frame.
2. Description of the Related Art As a conventional passenger conveyor device for driving a conveyor belt in which a large number of treads are connected endlessly and circulate in a main frame, there is a configuration described in, for example, JP-A-59-79785. That is, the driving machine is provided with a driving machine braking device, and the driving machine is braked when necessary. Further, a transmission mechanism braking device is provided for the transmission mechanism with which the transport band is engaged. Then, when the drive chain between the driving machine and the transmission mechanism breaks, the transmission mechanism braking device performs a braking operation. As a result, it is possible to prevent a trouble that the transport belt slides down.

As another conventional passenger conveyor device, there is, for example, a structure described in Japanese Patent Publication No. Sho 63-30275. That is, a driving machine is provided in the longitudinal middle of the endless transport belt, and a driving machine braking device is provided in the driving machine to brake the driving machine when necessary. In addition, a transmission mechanism engaged with the transport band is provided at a longitudinal middle of the endless transport band, and a transmission mechanism braking device is provided in the transmission mechanism. When the transport band is broken, the transmission mechanism braking device performs a braking operation. I do. As a result, it is possible to prevent a trouble that the transport belt slides down.

[0004]

In the conventional passenger conveyor device as described above, the driving device braking device and the transmission mechanism braking device may be operated simultaneously by the operation of the speed detecting device. Becomes larger. Therefore, there is a problem that a shock at the time of braking applied to the passengers on the transport belt when an overspeed exceeding a predetermined speed occurs is increased.

[0005] Further, in a conventional passenger conveyor device,
The transmission mechanism braking device performs a braking operation by breaking the drive chain or the transport band. For this reason, when the driving machine overspeeds due to the abnormality of the driving machine, the driving machine braking device performs the braking operation. Operation is continued. Therefore, although the drive device braking device and the transmission mechanism braking device are provided, the operation of the passenger conveyor device is not stopped, and the vehicle is operated at a speed higher than the predetermined speed.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a drive braking device for a driving device for driving a transport belt when an overspeed exceeding a predetermined speed occurs in the transport belt speed. It is another object of the present invention to provide a passenger conveyor device in which both of the transmission mechanism braking devices of the transmission mechanism engaged with the transport belt do not perform the braking operation at the same time.

[0007]

In a passenger conveyor device according to the present invention, a plurality of treads are connected endlessly, and a transport belt circulates in a main frame, and a transmission mechanism engaged with the transport belt. A driving device that drives the transport band via the transmission means, a first braking device that brakes the transmission mechanism, a second braking device that brakes the driving device, and a second braking device in which the moving speed of the transport band exceeds a predetermined value. One of the first braking device and the second braking device is operated when the one overspeed is detected, and the other of the two is operated when the second overspeed whose moving speed is different from the first overspeed is detected. And a speed detecting device.

Further, in the passenger conveyor device according to the present invention, a transmission mechanism comprising a main chain wheel, which is disposed in a machine room provided at an end of the main frame and around which a conveyor belt is wound, relates to the transmission mechanism. And a driving device for driving the transport belt via a transmission means including a combined wrapping transmission mechanism.

Further, in the passenger conveyor device according to the present invention, the first overspeed corresponding to the braking operation speed of the first braking device for braking the transmission mechanism is the braking operation speed of the second braking device for braking the driving machine. Is set higher than the second overspeed corresponding to.

Further, in the passenger conveyor device according to the present invention, the rotator is provided on the rotator, is urged toward the center of the rotator, is always held at a predetermined position, and is centrifugally generated by the rotation of the rotator. A weight which is displaced outward, and which is provided outside the rotating body and which operates by the displaced weight and detects one of the first overspeed and the second overspeed. There is provided a speed detecting device provided with a second detector which is provided at a position more distant from the rotating body than the first detector and operates with a displaced weight to detect the other of the two.

Further, in the passenger conveyor device according to the present invention, a transport band formed endlessly by a tread link having a rack, a longitudinal portion of a transport band provided on a main frame and disposed endlessly in the main frame. A transmission mechanism having a transmission wheel mounted in the middle and driven through a rack; provided in the main frame, mounted in the middle of the length of the transport band endlessly arranged in the main frame, and connected to the transport band through the rack. A transmission means having an engaged driving wheel, and a driving device for driving the transport belt via the transmission means are provided.

Further, in the passenger conveyor device according to the present invention, there is provided a transmission vehicle mounted on a main frame and installed at a longitudinal middle of a transport band disposed endlessly in the main frame and driven via a rack. A first overspeed corresponding to the braking operation speed of the first braking device that brakes the transmission mechanism having the rack is mounted on the main frame and provided at the middle of the longitudinal direction of the transport band arranged endlessly in the main frame. The speed is set to be higher than the second overspeed corresponding to the braking operation speed of the second braking device that brakes the driving device that drives the transport band via the transmission means having the driving vehicle engaged with the transport band via .

Further, in the passenger conveyor device according to the present invention, the rotator is provided on the rotator, is urged toward the center of the rotator, is always held at a predetermined position, and is centrifugally generated by the rotation of the rotator. A weight which is displaced outward, a first detector which is provided outside the rotating body and operates by the displaced weight, and detects one of the first overspeed and the second overspeed, and the outside of the rotating body. A speed detecting device provided by a second detector that is provided at a position more distant from the rotating body than the first detector and that operates by a displaced weight and detects the other of the two is provided on the main frame. A transmission means having a transmission wheel which is mounted at the longitudinal middle of the transport belt endlessly arranged in the main frame and is engaged with the transport belt via a rack, and a driving device which drives the transport belt via a transmission mechanism. Either is provided.

Further, in the passenger conveyor device according to the present invention, the passenger conveyor device is provided on the main frame, is provided at a longitudinal middle of the transport band disposed endlessly in the main frame, and is engaged with the transport band via a rack. A driving machine speed detecting device provided in a driving machine provided in a transmission means having a driving wheel, and a rack provided in a main frame and provided at a longitudinal middle of a transport band disposed endlessly in the main frame. A speed detecting device is provided which comprises a transmission mechanism speed detecting device provided on a first braking device shaft mounted on a transmission mechanism having a transmission wheel driven through the transmission.

Further, in the passenger conveyor device according to the present invention, the rotator is provided on the rotator, is urged toward the center of the rotator, is always held at a predetermined position, and is centrifugally generated by the rotation of the rotator. A driving machine speed detecting device comprising a first detector for detecting a first overspeed by operating with a weight displaced outward and a displaced weight provided outside the rotating body, provided on another rotating body. It is urged toward the center of the other rotating body and is always held at a predetermined position, and is displaced to the outside of the other rotating body by the centrifugal force caused by the rotation of the other rotating body. A transmission mechanism comprising a second detector that is disposed at a position farther from the other rotating body than a position corresponding to the operating speed of the first detector and is operated by another displaced weight to detect a second overspeed A speed detection device is provided.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 to 3 are views showing an example of an embodiment of the present invention. FIG. 1 is a conceptual longitudinal sectional view, FIG. 2 is an enlarged view of a machine room in FIG. 1, and FIG. It is an enlarged plan view which shows notionally the speed detection apparatus of a drive machine. In the figure, 1 is a main frame of the passenger conveyor device, 2 is a transport belt,
A large number of treads 3 are connected endlessly by a tread chain 4 and circulate in the main frame 1. Reference numeral 5 denotes a machine room provided at the upper end of the main frame 1.

Reference numeral 6 denotes a transmission mechanism, which is composed of a main chain wheel pivotally mounted on the machine room 5 and on which the tread chain 4 of the transport belt 2 is wound and engaged. Reference numeral 7 denotes a drive unit provided in the machine room 5 and includes a speed reducer 8, an electric motor 9 for driving the speed reducer 8, and a drive chain wheel 10. Reference numeral 11 denotes a transmission means, which is constituted by a large transmission 12 fixed to the main chain axle of the transmission mechanism 6 and a winding transmission mechanism composed of the large transmission 12 and a drive chain 13 wound around the drive chain 10.

Reference numeral 14 denotes a first braking device for braking the transmission mechanism 6, which is engaged with the ratchet wheel 15 engaged with the large chain wheel 12 via a friction braking mechanism (not shown) and the pawl of the ratchet wheel 15 which operates. It is constituted by an electromagnetic mechanism 17 provided with a matching braking arm 16. Reference numeral 18 denotes a second braking device which is constituted by an electromagnetic mechanism and is provided on the driving device 7 and engages with the electric motor 9 to brake the driving device 7.

Reference numeral 19 denotes a speed detecting device provided in the driving machine 7, a rotating body 20 fixed to the motor 9 shaft, a support piece 21 protruding from the rotating body 20, a weight 22, and one end screwed into the weight 22. And the other end is loosely fitted in the support piece 21 and is inserted into the screw rod 23 and the screw rod 23 is formed with a gap, and one end is inserted into the support piece 21 and the other end is inserted into the insertion end of the screw rod 23. It is constituted by a compression coil spring 24 arranged opposite to the screwed nut.

A first detector 25 and a rotating body 2 which are mounted on a fixed body (not shown) on the outer periphery of the rotating body 20 and are opposed to the weight 22 and are arranged at a distance from the weight 22.
0, which is attached to a fixed body (not shown) on the outer periphery of the rotating body 20 and is spaced apart from the first detector 25 in the circumferential direction of the rotating body 20 and at an interval wider than the interval between the weight 22 and the first detector 25. , A second detector 26 disposed opposite to the weight 22
Is provided.

In the passenger conveyor device configured as described above, when the driving device 7 is energized, the output of the driving device 7 is transmitted to the transmission mechanism 6 via the transmission means 11. As a result, the conveyor belt 2 wound around the transmission mechanism 6 is driven and circulates in the main frame 1 to operate the passenger conveyor.

When the driving machine 7 is stopped, the speed detector 1
The nine weights 22 are arranged at a stationary position in contact with the support pieces by the compression coil springs 24. When the driving device 7 is biased, the rotating body 20 rotates, and the centrifugal force corresponding to the rotation speed causes the weight 22 to move outward from the rotating body 20 against the biasing force of the compression coil spring 24. I do.

Then, an abnormality occurs in the passenger conveyor and the driving machine 7, and the moving speed of the transporting zone 2 is increased to exceed a predetermined value, for example, the first overspeed, for example, 110% of the rated speed of the passenger conveyor.
When the rotation speed reaches the rotation speed, the rotation speed of the rotating body 20 becomes the rotation speed corresponding to the first overspeed. As a result, the weight 22 displaced from the stationary position to the outside of the rotating body 20 is further displaced and comes into contact with the first detector 25 to operate. By the operation of the first detector 25, the second braking device 18 is energized to brake the electric motor 9 shaft, that is, the driving device 7, and the operation of the passenger conveyor is stopped.

A control device (not shown) is configured so that the motor 9 is deenergized by the operation of the first detector 25. However, when the second braking device 18 is energized, the braking effect of the second braking device 18 is obtained due to a failure of the second braking device 18, breakage of the tread chain 4, breakage of the drive chain 13, and the like. If not, the moving speed of the transport zone 2 further increases.

When such an abnormality occurs, the moving speed of the transport belt 2 further increases. When the second overspeed that is different from the first overspeed that exceeds the predetermined value of the moving speed of the transport zone 2, for example, when the speed of the passenger conveyor reaches 130% of the rated speed, the rotation speed of the rotating body 20 is increased. The rotation speed corresponds to the second overspeed.

As a result, the weight 22 is further displaced to the outside of the rotating body 20 and comes into contact with the second detector 26 to operate. The operation of the second detector 26 causes the first braking device 1 to operate.
4 is urged, and the braking arm 16 engages with the pawl of the ratchet wheel 15. When the ratchet wheel 15 stops, the heavy chain wheel 12 is braked via the friction braking mechanism, and the operation of the passenger conveyor is stopped.

In short, one of the first detector 25 and the second detector 26 is operated by the first overspeed and the second overspeed which are different from each other to operate the first braking device 14 and the second braking device 18. Only the braking device corresponding to the detected detector performs the braking operation. Accordingly, the first braking device 14 and the second braking device 18 do not perform the braking operation at the same time, and the braking torque of the transport belt 2 does not increase unexpectedly. Therefore, it is possible to solve the problem that an excessive shock due to braking is applied to the passengers on the transport belt when an overspeed exceeding a predetermined speed occurs.

Further, when the moving speed of the transport band 2 becomes the first overspeed due to the occurrence of the abnormality, the first detector 25 operates and the second braking device 18 is energized. In this state,
When the braking action by the second braking device 18 cannot be obtained due to an abnormality such as a failure, the moving speed of the transport belt 2 further increases. However, at this time, when the moving speed of the transport band 2 becomes a second overspeed different from the first overspeed exceeding the predetermined value, the second detector 26 operates.

As a result, the first braking device 14 is urged, and the braking arm 16 engages with the pawl of the ratchet wheel 15. When the ratchet wheel 15 stops, the heavy chain wheel 12 is braked via the friction braking mechanism, and the operation of the passenger conveyor is stopped. Therefore, even when the second brake device 18 is not operating properly, it is possible to prevent the occurrence of a problem in which the passenger conveyor is operated at a speed higher than the predetermined speed.

The first detector 2 in the first embodiment
Each of the fifth detector 26 and the second detector 26 has a structure in which the operating portion is pressed by the weight 22 and operates, and a non-contact type which operates when a displacement body such as the weight 22 approaches a predetermined value or more. Accordingly, the same operation as in the first embodiment can be obtained.

Embodiment 2 4 to 6 are views showing an example of another embodiment of the present invention. FIG. 4 is a conceptual longitudinal sectional view, FIG. 5 is an enlarged plan view of a driving device in FIG.
FIG. 5 is an enlarged plan view of a first braking device point of FIG. 4. In the drawings, the same reference numerals as those in FIGS. 1 to 3 denote corresponding parts, and reference numeral 2 denotes a transport belt. A large number of treads 3 are connected endlessly by tread links 27 formed of racks and circulate in the main frame 1.

Reference numeral 28 denotes a transmission mechanism, a frame 29 provided on the main frame 1 and provided at a longitudinally intermediate portion of the transporting band 2 disposed endlessly in the main frame 1, and a first shaft pivotally mounted on the frame 29. A transmission wheel 31 is fixed to the drive shaft 30 and driven through a rack of the tread link 27, and a first belt wheel 32 is fixed to the first shaft 30.

Reference numeral 33 denotes a first braking device for braking the transmission mechanism 28. A second belt wheel 35, a braking wheel 36, and a first belt wheel 32 fixed to a second shaft 34 pivotally attached to the frame 29.
A V-belt 37 wound around a second belt wheel 35, a squeezing mechanism 38 for squeezing the braking wheel 36 when necessary, a squeezing mechanism 38
39 in the pressing direction and the deenergized spring 3
Electromagnetic mechanism 1 that operates the pressing mechanism 38 by the pressing force of No. 9
7.

Reference numeral 40 denotes a transmission means, which is provided on the main frame 1 and is provided with a drive frame 41 provided at a longitudinally intermediate portion of the transporting band 2 disposed endlessly in the main frame 1, and a drive pivotally mounted on the drive frame 41. The driving belt 43 is fixed to the shaft 42 and drives the transport belt 2 through the rack of the tread link 27.

Reference numeral 44 denotes a drive unit, which is a speed reducer 45 for outputting to the drive shaft 42, a first driving belt wheel 46 fixed to the input shaft of the speed reducer 45, and an electric motor 4 provided on the drive frame 41.
7. Second driving belt wheel 48 fixed to motor 47 shaft
And the first driving belt wheel 46 and the second driving belt wheel 4
8 is constituted by a V-belt 49 wound around.

Reference numeral 18 denotes a second braking device, which is provided on the speed reducer 45 and is disposed so as to engage with the input shaft of the speed reducer 45 and
Braking 4 19 is provided on the speed reducer 45
This is a speed detecting device configured to be engaged with the input shaft of the first embodiment, and has a first detector 25 and a second detector 26 which are configured in the same manner as in FIG.

In the passenger conveyor device configured as described above, when the driving device 44 is energized, the output of the driving device 44 is transmitted to the transmission means 40, and the driving vehicle 43 rotates. As a result, the conveyor belt 2 engaged with the transmission mechanism 40 is driven and circulates in the main frame 1 to operate the passenger conveyor.

In the embodiment of FIGS. 4 to 6 as well, an abnormality occurs in the passenger conveyor and the driving device 44, and the moving speed of the transport zone 2 is increased to exceed the predetermined value. For example, when the speed reaches 110% of the rated speed of the passenger conveyor, the rotation speed of the rotating body 20 of the speed detection device 19 becomes the rotation speed corresponding to the first overspeed. Thereby, the first detector 25 of the speed detecting device 19 operates. By operating the first detector 25, the second braking device 18 is energized,
The input shaft of the speed reducer 45, that is, the driving device 44 is braked, and the operation of the passenger conveyor is stopped.

A control device (not shown) is configured so that the motor 47 is deenergized by the operation of the first detector 25. However, when the second braking device 18 is energized, the braking action of the second braking device 18 is obtained due to an abnormality such as a failure of the second braking device 18, a break of the tread link 27, or a failure of the transmission means 40. If not, the moving speed of the transport zone 2 further increases.

When such an abnormality occurs, the moving speed of the transport belt 2 further increases, and a second overspeed different from the first overspeed that exceeds a predetermined value of the transport speed of the transport belt 2, for example, a passenger conveyor. When the speed reaches 130% of the rated speed, the rotation speed of the rotating body 20 becomes the rotation speed corresponding to the second overspeed.

As a result, the second detector 26 operates and the first braking device 33 engaged with the transport belt 2 via the transmission mechanism 28 is urged, whereby the transmission mechanism 28 is braked and the transport belt 2 , That is, the operation of the passenger conveyor is stopped.
In this manner, one of the first detector 25 and the second detector 26 was operated by the different first overspeed and the second overspeed, and the first brake device 33 and the second brake device 18 were operated. A braking device corresponding to the detector performs a braking operation.
Therefore, although detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 3 can be obtained in the embodiment of FIGS.

Embodiment 3 FIGS. 7 to 10 also show an example of another embodiment of the present invention. FIG.
8 is an enlarged plan view of a portion of the driving device, FIG. 8 is a diagram corresponding to FIG. 6 described above, and is an enlarged plan view of a portion of the first braking device according to the third embodiment, and FIG. FIG. 10 is an enlarged front view conceptually showing a speed detection device at a location.
FIG. 10 is an enlarged front view conceptually showing a speed detecting device at the first braking device portion in FIG. 8, and a passenger conveyor device is configured similarly to FIGS. 4 to 6 except for FIGS. . In the drawings, the same reference numerals as those in FIGS. 1 to 3 and 4 to 6 denote corresponding parts.

191 is provided on the speed reducer 45 and
A driving machine speed detection device configured to engage with the input shaft of
The first detector 25 is provided in the same manner as in FIG. 3 described above. Reference numeral 192 denotes a transmission mechanism speed detection device provided on the second shaft 34 of the first braking device 33 and configured to engage with the second shaft 34, and has the same configuration as that of FIG. Have been.

In the passenger conveyor device configured as described above, when the driving device 44 is energized, the output of the driving device 44 is transmitted to the transmission means 40, and the driving vehicle 43 rotates. As a result, the conveyor belt 2 engaged with the transmission mechanism 40 is driven and circulates in the main frame 1 to operate the passenger conveyor.

Also in the embodiment of FIGS. 7 to 10, an abnormality occurs in the passenger conveyor and the driving device 44, and the moving speed of the transport belt 2 is increased to exceed the predetermined value.
For example, when the speed reaches 110% of the rated speed of the passenger conveyor, the rotation speed of the rotating body 20 of the driving machine speed detection device 191 becomes the rotation speed corresponding to the first overspeed. Thus, the first detector 25 of the driving machine speed detecting device 191 operates.

When the braking action of the second braking device 18 cannot be obtained due to an abnormality, a second overspeed different from the first overspeed exceeding a predetermined value of the moving speed of the transporting belt 2, for example, a passenger When the speed reaches 130% of the rated speed of the conveyor, the rotation speed of the rotating body 20 of the transmission mechanism speed detection device 192 becomes the rotation speed corresponding to the second overspeed. As a result, the second detector 26 operates to urge the first braking device 33 engaged with the transport belt 2 via the transmission mechanism 28,
The transmission mechanism 28 is braked to stop the movement of the transport belt 2, that is, the operation of the passenger conveyor.

As described above, one of the first detector 25 and the second detector 26 is operated by the first overspeed and the second overspeed which are different from each other, and the first braking device 33 and the second braking device 18 are operated. The braking device corresponding to the operated detector performs the braking operation. Therefore, detailed description is omitted, but FIG.
10 to FIG. 10, the same operation as the embodiment of FIGS.

[0048]

As described above, according to the present invention, there is provided a transport belt circulating and moving within the main frame with a number of treads connected endlessly, a transmission mechanism engaged with the transport belt, and a transmission means. A driving device for driving the transport belt via the first transmission device, a first braking device for braking the transmission mechanism, a second braking device for braking the driving device, and detecting a first overspeed in which the traveling speed of the transport band exceeds a predetermined value. A speed detecting device that operates one of the first braking device and the second braking device when the second speed is detected, and operates the other of the two when the moving speed detects a second overspeed that is different from the first overspeed. Is provided.

In this manner, one of the first braking device and the second braking device is braked by the first overspeed and the second overspeed which are different from each other, and the simultaneous braking of the first braking device and the second braking device is performed. Operation is blocked. For this reason, the braking torque of the transport belt does not undesirably increase, and there is an effect of eliminating a problem that an excessive shock due to braking is applied to the passengers on the transport belt when an overspeed exceeding a predetermined speed occurs.

In the case where, due to the occurrence of an abnormality, the braking effect of the braking device that has been braked by one of the first overspeed and the second overspeed out of the first braking device and the second braking device cannot be obtained. The braking action by the other braking device that performs the braking operation is obtained by the other of the two. Therefore, even when one of the first braking device and the second braking device is malfunctioning, there is an effect of preventing the occurrence of a problem that the passenger conveyor is operated in a state where the speed is increased beyond the predetermined speed. .

Further, as described above, the present invention provides a transmission mechanism comprising a main chain wheel which is disposed in a machine room provided at an end of a main frame and around which a transport band is wound, and which is engaged with the transmission mechanism. And a driving device for driving the transport belt via a transmission means including a winding transmission mechanism.

Then, one of the first braking device and the second braking device is braked by the first overspeed and the second overspeed which are different from each other, so that the simultaneous braking operation of the first braking device and the second braking device is prevented. Is done. For this reason, the braking torque of the transport belt does not undesirably increase, and there is an effect of eliminating a problem that an excessive shock due to braking is applied to the passengers on the transport belt when an overspeed exceeding a predetermined speed occurs.

In the case where, due to the occurrence of an abnormality, the braking effect of the braking device operated by one of the first overspeed and the second overspeed out of the first braking device and the second braking device cannot be obtained. The braking action of another braking device that performs a braking operation is obtained by the other of the two. For this reason, even when one of the first braking device and the second braking device is malfunctioning, there is an effect of preventing the occurrence of a problem in which the passenger conveyor is operated at a speed higher than the predetermined speed. .

Further, as described above, according to the present invention, the first overspeed corresponding to the braking operation speed of the first braking device for braking the transmission mechanism is changed to the braking operation speed of the second braking device for braking the driving machine. It is set to be faster than the corresponding second overspeed.

Then, one of the first braking device and the second braking device is braked by the first overspeed and the second overspeed which are different from each other, so that the simultaneous braking operation of the first braking device and the second braking device is prevented. Is done. For this reason, the braking torque of the transport belt does not undesirably increase, and there is an effect of eliminating a problem that an excessive shock due to braking is applied to the passengers on the transport belt when an overspeed exceeding a predetermined speed occurs.

Further, in the case where the braking action of the second braking device for braking the driving machine when an abnormality occurs cannot be obtained due to a failure or the like, the braking action of the first braking device for braking the transmission mechanism can be obtained. For this reason, even when the second brake device is not operating properly, there is an effect of preventing the occurrence of a problem in which the passenger conveyor is operated at a speed higher than the predetermined speed.

Further, as described above, the present invention is provided on the rotating body, is urged toward the center of the rotating body, and is always held at a predetermined position, and the rotating body is rotated by the centrifugal force generated by the rotation of the rotating body. A weight that is displaced outward, and is provided outside the rotary body and a first detector that is provided outside the rotating body and operates by the displaced weight and detects one of the first overspeed and the second overspeed. And a speed detecting device provided with a second detector which is disposed at a position farther from the rotating body than the first detector and operates by a displaced weight and detects the other of the two.

Then, one of the first braking device and the second braking device is braked by the first overspeed and the second overspeed which are different from each other, so that the simultaneous braking operation of the first braking device and the second braking device is prevented. Is done. For this reason, the braking torque of the transport belt does not undesirably increase, and there is an effect of eliminating a problem that an excessive shock due to braking is applied to the passengers on the transport belt when an overspeed exceeding a predetermined speed occurs.

In the case where the braking action of the braking device operated by one of the first overspeed and the second overspeed out of the first braking device and the second braking device cannot be obtained due to the occurrence of an abnormality, The braking action by the other braking device that performs the braking operation is obtained by the other of the two. For this reason, even when one of the first braking device and the second braking device is malfunctioning, there is an effect of preventing the occurrence of a problem in which the passenger conveyor is operated at a speed higher than the predetermined speed. .

Further, as described above, the present invention relates to a transport band formed endlessly by a tread link having a rack, a longitudinal intermediate portion of a transport band provided on a main frame and disposed endlessly in the main frame. A transmission mechanism having a transmission wheel that is mounted on the main frame and is driven by a rack, and is provided in the main frame at a longitudinally intermediate position of the endlessly disposed transport band in the main frame and is engaged with the transmission band through the rack. A transmission means having a combined driving wheel, and a driving device for driving the transport belt via the transmission means are provided.

Then, one of the first braking device and the second braking device is braked by the first overspeed and the second overspeed which are different from each other, so that the simultaneous braking operation of the first braking device and the second braking device is prevented. Is done. Therefore, the braking torque of the transport zone does not increase unintentionally, and there is an effect of eliminating a problem that an excessive shock due to braking is applied to the passengers on the transport zone when an overspeed exceeding a predetermined speed occurs.

In the case where, due to the occurrence of an abnormality, the braking effect of the braking device that has been braked by one of the first overspeed and the second overspeed out of the first braking device and the second braking device cannot be obtained. The braking action by the other braking device that performs the braking operation is obtained by the other of the two. For this reason, even when one of the first braking device and the second braking device is malfunctioning, there is an effect of preventing the occurrence of a problem in which the passenger conveyor is operated at a speed higher than the predetermined speed. .

Further, as described above, the present invention has a transmission vehicle provided on the main frame, mounted at the longitudinal middle of the transport band disposed endlessly in the main frame, and driven via a rack. The first overspeed corresponding to the braking operation speed of the first braking device that brakes the transmission mechanism is provided on a main frame, and is provided at a longitudinal middle of a transport band disposed endlessly in the main frame via a rack. The driving speed is set to be higher than the second overspeed corresponding to the braking operation speed of the second braking device that brakes the driving device that drives the transport belt through the transmission means having the driving vehicle engaged with the transport belt. is there.

Then, one of the first braking device and the second braking device is braked by the first overspeed and the second overspeed which are different from each other, so that the simultaneous braking operation of the first braking device and the second braking device is prevented. Is done. For this reason, the braking torque of the transport belt does not undesirably increase, and there is an effect of eliminating a problem that an excessive shock due to braking is applied to the passengers on the transport belt when an overspeed exceeding a predetermined speed occurs.

Further, when the braking action of the second braking device for braking the driving machine at the time of occurrence of an abnormality cannot be obtained due to a failure or the like, the braking action of the first braking device for braking the transmission mechanism can be obtained. For this reason, even when the second brake device is not operating properly, there is an effect of preventing the occurrence of a problem in which the passenger conveyor is operated at a speed higher than the predetermined speed.

Further, as described above, the present invention is provided on the rotating body, is urged toward the center of the rotating body, and is always held at a predetermined position, and the centrifugal force generated by the rotation of the rotating body causes the rotating body to rotate. A weight that is displaced outward, is provided outside the rotating body, and is provided outside the rotating body, the first detector being operated by the displaced weight and detecting one of the first overspeed and the second overspeed. A speed detector constituted by a second detector which is disposed at a position more distant from the rotating body than the first detector and is operated by a displaced weight and detects the other of the two, provided on the main frame, Either a transmission mechanism having a transmission wheel that is mounted at the longitudinal middle of the transport band disposed endlessly in the frame and is engaged with the transport band via a rack, or a driving device that drives the transport band via the transmission means It is provided in.

Then, one of the first braking device and the second braking device is braked by the first overspeed and the second overspeed which are different from each other, so that the simultaneous braking operation of the first braking device and the second braking device is prevented. Is done. For this reason, the braking torque of the transport belt does not undesirably increase, and there is an effect of eliminating a problem that an excessive shock due to braking is applied to the passengers on the transport belt when an overspeed exceeding a predetermined speed occurs.

In the case where, due to the occurrence of an abnormality, the braking effect of the braking device that has been braked by one of the first overspeed and the second overspeed out of the first braking device and the second braking device cannot be obtained. The braking action by the other braking device that performs the braking operation is obtained by the other of the two. Therefore, even when one of the first braking device and the second braking device is malfunctioning, there is an effect of preventing the occurrence of a problem that the passenger conveyor is operated in a state where the speed is increased beyond the predetermined speed. .

Further, as described above, the present invention is provided at the main frame and is provided at the longitudinal middle of the transport belt disposed endlessly in the main frame, and is provided with a drive engaged with the transport belt via a rack. A drive speed detecting device provided on a drive provided on a transmission means having a vehicle, and a drive provided via a rack provided on a main frame at a longitudinally intermediate portion of a transport band provided endlessly in the main frame. And a speed detection device including a transmission mechanism speed detection device provided on a first braking device shaft mounted on a transmission mechanism having a transmission vehicle.

Then, one of the first braking device and the second braking device is braked by the first overspeed and the second overspeed which are different from each other, so that the simultaneous braking operation of the first braking device and the second braking device is prevented. Is done. For this reason, the braking torque of the transport belt does not undesirably increase, and there is an effect of eliminating a problem that an excessive shock due to braking is applied to the passengers on the transport belt when an overspeed exceeding a predetermined speed occurs.

In the case where, due to the occurrence of an abnormality, the braking effect of the braking device that has been braked by one of the first overspeed and the second overspeed out of the first braking device and the second braking device cannot be obtained. The braking action by the other braking device that performs the braking operation is obtained by the other of the two. For this reason, even when one of the first braking device and the second braking device is malfunctioning, there is an effect of preventing the occurrence of a problem in which the passenger conveyor is operated at a speed higher than the predetermined speed. .

Further, as described above, the present invention is provided on the rotating body, is urged toward the center of the rotating body, and is always held at a predetermined position, and the centrifugal force generated by the rotating body rotates the rotating body. A driving machine speed detection device including a weight that is displaced outward and a first detector that is provided outside the rotating body and operates by the displaced weight and detects a first overspeed, and is provided on another rotating body. Of the other rotating body, which is urged toward the center of the rotating body, is always held at a predetermined position, and is displaced outward from the other rotating body due to centrifugal force caused by rotation of the other rotating body. A transmission mechanism speed comprising a second detector which is disposed at a position further away from the other rotating body than a position corresponding to the operation speed of the first detector and operates by another displaced weight to detect a second overspeed A detection device is provided.

Then, one of the first braking device and the second braking device is braked by the first overspeed and the second overspeed which are different from each other, so that the simultaneous braking operation of the first braking device and the second braking device is prevented. Is done. For this reason, the braking torque of the transport belt does not undesirably increase, and there is an effect of eliminating a problem that an excessive shock due to braking is applied to the passengers on the transport belt when an overspeed exceeding a predetermined speed occurs.

Further, when the braking action of the second braking device for braking the driving machine at the time of occurrence of an abnormality cannot be obtained due to a failure or the like, the braking action of the first braking device for braking the transmission mechanism can be obtained. For this reason, even when the second brake device is not operating properly, there is an effect of preventing the occurrence of a problem in which the passenger conveyor is operated at a speed higher than the predetermined speed.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is a conceptual longitudinal sectional view.

FIG. 2 is an enlarged view of a machine room in FIG. 1;

FIG. 3 is an enlarged plan view conceptually showing a speed detector of the driving machine in FIG. 1;

FIG. 4 is a view showing a second embodiment of the present invention, and is a conceptual longitudinal sectional view.

FIG. 5 is an enlarged plan view of the driving device shown in FIG. 4;

FIG. 6 is an enlarged plan view of a first braking device location in FIG. 4;

FIG. 7 is a view showing a third embodiment of the present invention and is a view corresponding to FIG. 5 described above, and is an enlarged plan view of a portion of a driving machine.

FIG. 8 is an enlarged plan view of a first braking device according to the third embodiment of the present invention, corresponding to FIG. 6 described above.

FIG. 9 is an enlarged front view conceptually showing a speed detector at a driving machine portion in FIG. 7;

FIG. 10 is an enlarged front view conceptually showing the speed detection device at the first braking device point in FIG. 8;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main frame, 2 conveyance belt, 3 treads, 5 machine room, 6 transmission mechanism, 7 driving machine, 11 transmission means, 14 first braking device, 18 second braking device, 19 speed detecting device, 20
Rotating body, 22 weight, 25 first detector, 26 second detector, 27 tread link, 28 transmission mechanism, 31 transmission car, 33 first braking device, 40 transmission means, 43 driving car, 44 driving machine, 191 driving Machine speed detector, 1
92 transmission mechanism speed detector.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B66B 25/00 B66B 23/02 B66B 29/00

Claims (9)

(57) [Claims] 1. A transport belt in which a large number of treads are connected endlessly to circulate within a main frame, a transmission mechanism with which the transport belt is engaged, and a drive for driving the transport belt via a transmission means. Machine, a first braking device for braking the transmission mechanism, a second braking device for braking the driving device, and the second braking device when detecting a first overspeed in which the moving speed of the transport band exceeds a predetermined value. A speed detecting device for operating one of the one braking device and the second braking device, and operating the other of the two when the moving speed detects a second overspeed different from the first overspeed. Passenger conveyor equipment. 2. A transmission mechanism comprising a main chain wheel which is disposed in a machine room provided at an end of the main frame and around which a transport band is wound, and a transmission comprising a winding transmission mechanism engaged with the transmission mechanism. 2. The passenger conveyor device according to claim 1, wherein the driving device drives the transport belt through a means. 3. A first overspeed corresponding to a braking operation speed of a first braking device for braking a transmission mechanism is higher than a second overspeed corresponding to a braking operation speed of a second braking device for braking a driving machine. The passenger conveyor device according to claim 1 or 2, wherein: 4. A weight which is provided on the rotating body, is urged toward the center of the rotating body, is always held at a predetermined position, and is displaced outwardly of the rotating body by centrifugal force caused by rotation of the rotating body. The first detector provided outside the rotating body and operated by the displaced weight to detect one of the first overspeed and the second overspeed, and the first detector provided outside the rotating body. 2. A speed detecting device comprising a second detector which is arranged at a position more distant from the rotating body than a detector and is operated by the weight displaced and detects the other of the two. The passenger conveyor device according to claim 2 or claim 3. 5. A transport band formed endlessly by a tread link having a rack, provided on a main frame, provided at a longitudinal middle of the transport band arranged endlessly in the main frame, and provided via the rack. A transmission mechanism having a driven transmission wheel, mounted on the main frame, mounted at the longitudinal middle of the transport band disposed endlessly in the main frame, and engaged with the transport band via the rack; 2. The passenger conveyor device according to claim 1, wherein said transmission means includes a driving vehicle, and said driving device drives said transport band via said transmission means. 6. A second overspeed corresponding to a braking operation speed of a first braking device for braking a transmission mechanism is higher than a first overspeed corresponding to a braking operation speed of a second braking device for braking a driving machine. 6. The passenger conveyor device according to claim 5, wherein: 7. A weight that is provided on the rotating body, is urged toward the center of the rotating body, is always held at a predetermined position, and is displaced outward from the rotating body by centrifugal force due to rotation of the rotating body. The first detector provided outside the rotating body and operated by the displaced weight to detect one of the first overspeed and the second overspeed, and the first detector provided outside the rotating body. 6. The speed detecting device according to claim 5, wherein the speed detecting device is constituted by a second detector which is arranged at a position more distant from the rotating body than the detector and is operated by the displaced weight and detects the other of the two. Or the passenger conveyor device according to claim 6. 8. A speed detecting device comprising a driving machine speed detecting device provided on the driving machine and a transmission mechanism speed detecting device provided on a first braking device shaft of the transmission mechanism. The passenger conveyor device according to claim 6. 9. A weight which is provided on the rotating body, is urged toward the center of the rotating body, is always held at a predetermined position, and is displaced outwardly of the rotating body by centrifugal force generated by rotation of the rotating body. A driving machine speed detecting device comprising a first detector which is provided outside of the rotating body and operates by the displaced weight and detects a first overspeed, a driving machine speed detecting device provided on another rotating body, It is urged toward the center and is always held at a predetermined position and is displaced outward from the other rotator by centrifugal force caused by rotation of the other rotator. A second detector for detecting the second overspeed by operating with the other weight displaced and disposed at a position further away from the other rotating body than the operating speed corresponding position of the first detector provided. Characterized by a transmission mechanism speed detector A passenger conveyor device according to claim 8.