JPS5816935Y2 - Drive system switching device for cableway motive pulleys - Google Patents

Description

[Detailed description of the invention] This invention is a cableway, that is, a facility in which a motive pulley wrapped around a cable is rotated to drive the cable to transport people or goods using a carrier. The present invention relates to a drive system switching device for a motive pulley of a cableway for performing system switching.

The motive pulleys on a cableway are driven by a main motor (usually an electric motor) via a transmission or deceleration device, but it is important to avoid failures in these transmission or deceleration devices during operation of the cableway. If this occurs, or if there is a long power outage, etc., operation will become impossible and people or objects on the carrier will be suspended from the cables. It is necessary to accommodate them safely and quickly at the parking lot.

For this reason, in relatively large-scale cableways, such as cableways that use closed-type carriers, in such cases, the operation system is switched to a backup engine (usually an internal combustion engine, etc.) for operation. .

However, conventionally used drive system switching devices often have a complicated structure and are complicated to operate.

Furthermore, in order to deal with any failures that may occur in the main motor system, it is best to switch the cableway drive system at a position as close to the cable as possible, that is, at a position on the driven side of the power transmission. Although this is obviously desirable, the transmission torque increases due to deceleration at a position close to the driven side, and the switching device correspondingly becomes large in size and has a heavy structure, so it is necessary to quickly respond in an emergency. It was difficult to operate.

In other words, there are two typical configurations of drive systems for ordinary cableways. , has two prime mover systems: a main prime mover system having a main prime mover and a main reducer, and a standby prime mover system having a backup prime mover and a backup reducer.

The power of the main motor system is transmitted in the order of the main motor, the main reduction gear, the main reduction gear output shaft, the pulley shaft, and the driving pulley.

Further, the power of the standby prime mover system is transmitted in the order of the standby prime mover, the standby reducer, the standby reducer output shaft (pinion), the gear, and the drive pulley.

When driving a motive pulley by a standby motor system,
The main reducer output shaft and pulley shaft are separated from the main motor system by operating the coupling, and the standby motor system is separated by sliding the standby motor and meshing the pinion attached thereto with the gear. Connect with the driving pulley.

However, in a drive system with such a configuration or its switching device, it is necessary to slide the preliminary reduction gear, which usually takes several steps.
It takes a lot of effort to slide the spare reducer for a heavy object weighing over 1,000 kg, and once the sliding work is completed and the connection between the pinion and gear is completed, the spare reducer is fixed to the pace frame in this state. It is also Tanashi to do the work quickly.

The purpose of switching the drive system is to perform emergency operation of the cableway to accommodate passengers as soon as possible in the event of a power outage or failure of equipment in the main motor system, so it is labor-intensive and time-consuming. Lack of this is a significant disadvantage.

With a drive system switching device like this, even if the main motor system is successfully disconnected and the standby motor system is connected, if there is a failure in the bearing supporting the pulley shaft, the standby motor system will be switched off. , had the major drawback of not being able to drive a motive pulley.

On the other hand, the drive system of the second example is configured so that the main motor and the standby motor can be connected to one reduction gear, and the switching between the main motor system and the standby motor system is performed by switching the gear train in the coupling. It is composed of

The drive system and its switching device in this second example are intended to perform switching at the high-speed shaft position of the cableway drive system, where the transmitted torque is small, so the device is small, easy to handle, and very easy to use. Although this method has the advantage of being suitable for rapid switching, it has the serious drawback that it will be completely powerless if a failure occurs in the damaged drive side, such as a reduction gear, from the position of the gear train that performs the change.

This idea was developed in view of the above circumstances, and it has a simple structure, is easy to operate, has high reliability, can perform switching operations reliably in a short time, and is inexpensive. The object of the present invention is to provide a drive system switching device for a motive pulley of a low-floor cableway.

Corresponding to this purpose, the drive system switching device for the motive pulley of the cableway of this invention at least changes the rotation between the rotating shaft and the motive pulley that is pivotally connected to the rotating shaft and drives the cable. a switching device capable of intermittent transmission; a brake capable of braking rotation of the driving pulley; a gear fixed to and coaxial with the driving pulley; and a gear swinging about a pin. and a pinion of a standby motor system that can move forward and backward into a meshing position with the gear; and a second sprocket located coaxially with the first sprocket, and a second sprocket that is endlessly wound around the first sprocket and the second sprocket, and the first sprocket and the second sprocket are connected to each other. It is characterized by comprising a chain that can be placed in a rotation transmission relationship and whose connected portion can be released at least at one point.

The details of this invention will be explained below with reference to the drawings showing one embodiment.

In Figures 1 and 2, 1 is a support frame fixed on the ground, a reducer 2 is fixed to the support frame 1, and the reducer 2 is pivotally supported by a bearing (not shown) in the reducer 2. The cable 5 is wound around a driving pulley 4 that is pivotally supported on the output shaft 3, and the cable 5 is driven by rotating the driving pulley 4.

The output shaft 3 and the driving pulley 4 are in a rotation transmission relationship via the switching device 10, and the switching device 10 can connect and disconnect the rotation transmission relationship between the output shaft 3 and the driving pulley 4.

The speed reducer 2 is connected to a main motor 7 via a coupling 6, and the main motor 70 rotates to rotate the drive pulley 4 via the output shaft 3 and the switching device 10.

A pulley brake 9 is disposed on the peripheral edge 8 of the motive pulley 4 to brake the peripheral edge 8 by pressing the peripheral edge 8 from above and below.

The spare motor 11 is fixedly installed near the lower part of the support frame 1, for example.

On the other hand, an annular gear 12 is fixedly attached to the lower surface of the drive pulley 4 coaxially with the drive pulley 4, and a nachinion 13 is disposed near the gear 12 and can be moved to a position where it engages or does not engage with the gear 12. is installed.

This pinion 13 is pivoted to a fixed position, for example, a pin 15 of a bracket 14 extending from the case of the reducer 2, and a shaft 17 of a hydraulic motor 16 is swingable about the center of the pin 15 by manual or external power. is fitted in.

This hydraulic motor 16 is connected to a hydraulic pump 19 via hydraulic piping 18.
The hydraulic pump 19 is connected to the standby engine 11 via a transmission shaft 20 and is driven.

If it is necessary to switch from the operation of the main motor 7 system to the operation of the standby motor 11 system for some reason, the hydraulic motor 16 should be moved in the direction of the arrow 21 in FIG. 2 around the pin 15. By rotating and meshing the pinion 13 with the gear 12, the driving pulley 4 can be connected to the drive system of the standby engine 11.

When operating the system of standby motor 11, drive pulley 4
It is necessary to separate the main engine 7 from the main engine 7 system.

The switching device 10 for this disconnection is shown in detail in FIG.

That is, the output shaft 3 is a cantilever shaft that is pivotally supported by a bearing in the reducer 2 at a fixed position and extends upward.

The driving pulley 4 has a groove formed on its peripheral edge 8 so that the cable 5 can be wrapped around it, and a boss portion 22 located at the center of the driving pulley 4 is fitted into a sleeve 23 fitted to the output shaft 3. It is pivotally supported by rolling bearings 24a and 24b and can freely rotate.

Note that the spacer 25 is fitted onto the output shaft 3 in order to determine the vertical position of the sleeve 23.

In addition, the cap 26 has multiple ports) 27a, 27b,
The cap 28 is screwed onto the upper surface of the boss portion 22 with a plurality of pins 29a and 29b, respectively, and fixed thereto, and the rolling bearings 24a and 24
b, and maintains the predetermined position of the motive pulley 4 in the vertical direction.

Next, a mounting seat 31 protruding in an annular shape is formed on the driving pulley 4, and an annular plate-shaped sprocket 32 is fixed to the mounting seat 31 with a plurality of poles 33a, 33b, . . . .

In the housing, at a position further above the sleeve 23 of the output shaft 3,
The other sprocket 34 is fitted onto the output shaft 3 using the boss portion 35 of the other sprocket 34, and the key 36 is firmly inserted and fixed.

Using an end plate 37 that covers the upper surface of the upper end surface of the output shaft 3 and the upper surface of the boss portion 35, the bolt 38 is attached to the output shaft 3 and a plurality of other ports 39a, 39b, etc.
... and screw them onto the boss portions 35 respectively.

By doing so, the end plate 37 secures a predetermined position of the other sprocket 34 in the vertical direction, and cooperates with the action of the key 36 to fix the output shaft 3 and the other sprocket 34 together. relationship.

In such an arrangement, the planes of the sprocket 32 and the other sprocket 34 need to be parallel to each other, and a necessary gap 41 and a gap 41 and 100 are provided so that they do not come into contact with each other even when they rotate. It is necessary to determine the dimensions to ensure the air gap 42.

The sprocket 32 and the other sprockets 34 each have a sprocket tooth profile that is equal to each other in terms of pitch diameter, pitch, number of teeth, shape, etc. over the entire circumference of the periphery.
That is, the teeth 43 and 44 are formed so that they are congruent if they are overlapped coaxially with the same phase.

Next, an annular mounting seat 50 is projected from the lower surface of the driving pulley 4, and a plurality of rings 45a are mounted on the annular gear 12 coaxially with the driving pulley 4.

45b...screw it on.

As mentioned above, the hydraulic motor 16 is swingably supported at a fixed position, for example, by the pin 15 of the bracket 14 protruding from the reducer 2, and is rotated as shown by the arrow 21 around the pin 15 manually or by external power. The gear 12 and the pinion 13 attached to the shaft 17 are meshed with each other in a removable manner.

1 and 2 show a state in which the pinion 13 is separated from the gear 12.

Next, the teeth 43 of the sprocket 32 and the teeth 44 of the other sprocket 34 are connected together, and a chain 45 is commonly wound around the entire circumference and connected in an endless manner. 34 are locked in a fixed relationship with each other.

Two parts of chain 45 can be released.

The operation and operation method of this drive system switching device having the above-mentioned arrangement are as follows.

In the case of a regular connection driven by a main motor system, the pinion 13 is separated from the gear 12, and the output shaft 3 and the driving pulley 4 are connected by the switching device 10 so that rotation can be transmitted.

Therefore, in this case, the sprocket 32 and the other sprocket 34 are locked and integrally connected by the chain 45, and this state is shown in FIGS. 1 and 2.

When the main motor 7 is rotated in this way, the output shaft 3 of the reducer 2 is rotated, and the key 36 transmits the rotation to the other sprocket 34, and the chain 45 further transmits the rotation to the sprocket 32, so the drive pulley 4 is rotated. , the cable 5 can be operated.

Next, if it is necessary to switch to operation of the standby motor system for some reason, the connection between the output shaft 3 and the driving pulley 4 is disconnected by the switching device 10.

That is, the chain 45, which is endlessly locked, is released from the connection at one point, and the chain 45 is connected to the sprocket 32 (7).
It is pulled out from the tooth 43 and the tooth 44 of the other sprocket 34, and the locking relationship between the two is released.

At this time, even if there is an imbalance in the loads on both the reciprocating lines of the cable 5,
If this operation is performed after applying pressure braking to the peripheral edge 8 of the motive pulley 4 from above and below using the pulley brake 9, the work can be carried out safely.

In this way, the preparation is completed by meshing the pinion 13 with the gear 12.

When the standby motor 11 is rotated, the hydraulic pump 19 is rotated via the transmission shaft 20, pressure oil is sent through the hydraulic piping 18, and the hydraulic motor 16 is rotated.

Furthermore, since the shaft 17 and pinion 13 rotate, power is transmitted to the gear 12.

The driving pulley 4 is rotated by the pinion 13 because the rollers fitted into the sleeve 23 which is fitted onto the output shaft 3 and in a fixed relationship are pivotally supported by the bearings 24a and 24b, and the gear 12 is fixed. The driving pulley 4 rotates in response to the transmission, and can drive the cable 5.

At this time, the output shaft 3 functions not as a rotating shaft but as a supporting shaft, and the gaps 41 and 42 are always secured, so that there is no interference between the rotating part and the stationary part.

In the drive system switching device of this invention, the pinion 13 pivots in the direction of arrow 21 about the pin 15 and engages with the gear 12, and the gear engages by sliding a heavy object. Unlike conventional switching devices, it is easy to handle and can perform switching quickly.

In the above embodiment, the housing is a rolling bearing 24a.

24b is used, but this rolling bearing 24a.

24b does not perform rolling motion of the ball or roller during steady operation, and only bears a static load, so there is almost no risk of damage, and the output shaft 3 As long as ' is in good condition simply as a support shaft, the standby motor can be used to drive the motor, resulting in high reliability.

Moreover, the switching device of this invention is configured so that the switching between the main motor system and the standby motor system is performed at the point of the main motor system closest to the harpoon pulley, and is designed to handle all possible problems that may occur in the main motor system. Able to respond to failures.

In the embodiment described above, the sleeve 23 is fitted and fixed to the output shaft 3, and the rolling bearings 24a, 2 are attached to the sleeve 23.
4b is fitted to pivotally support the driving pulley, but sleeve 2
3 is used to protect the output shaft 3 and to facilitate assembly work. Therefore, depending on the design conditions, the sleeve 23 may be omitted and the rolling bearing 24a may be directly attached to the output shaft 3.
Of course, there is no problem in fitting the drive pulley 4 by fitting the drive pulley 24b.

Of course, the purpose can also be achieved by using a sliding bearing or the like instead of a rolling bearing.

In addition, the driving pulley 4 and the gear 12 are pol) 45a, 45
The motive pulley 4 and sprocket 32 screwed together and housed by b... are bolts 33a.

It is screwed on with 33b..., but this is done in consideration of the manufacturing process and the possibility of replacing parts after years of use.
Of course, even if these are formed integrally, the effect is the same.

As is clear from the above explanation, this device is simple, and by removing the chain, it can be quickly and safely disconnected from the main motor system and operation can be resumed using the standby motor system, and the cableway can be operated quickly and safely. It is possible to obtain a drive system switching device that can be used for motive pulleys on cableways and can greatly contribute to safe driving.

[Brief explanation of drawings]

FIG. 1 is a front view showing the arrangement of driving pulleys, and FIG. 2 is a front view showing a drive system switching device for the driving pulleys. 1...Support frame, 2...Reducer, 3...
...Output shaft, 4...Motive pulley, 5...
... Cable, 7 ... Main motor, 9 ... Pulley brake, 10 ... Switching device, 11 ...
...Spare engine, 12...Gear, 13...
...Pinion, 16...Hydraulic motor 19.
... Hydraulic pump, 32 ... Sprocket, 34 ... Other sprocket, 45 ... -
·chain.

Claims (1)

[Scope of utility model registration request] At least a switching device capable of intermittent rotational transmission between a rotating shaft and a motive pulley that is pivotally connected to the rotary shaft and drives a cable, and a brake capable of braking the rotation of the motive pulley; A gear fixed to the driving pulley and located coaxially with the driving pulley, and a pinion of a standby driving system that can swing around a pin and move back and forth to a meshing position with the gear. , the switching device includes a first sprocket fixed to the rotating shaft, a second sprocket fixed to the motive pulley and located coaxially with the first sprocket, and It is wound endlessly around the first sprocket and the second sprocket so that the first sprocket and the second sprocket can be placed in a rotation transmission relationship, and the connecting portion can be released at at least one point. 1. A drive system switching device for a cableway driving pulley, comprising: a chain;