JP4262040B2 - Safety device for traveling equipment - Google Patents

Description

  The present invention relates to a safety device for a traveling device that makes an emergency stop on a vehicle body traveling on a rail.

  2. Description of the Related Art Conventionally, in a traveling device that conveys people, things, and the like, a device that employs a rack and pinion system as shown in FIG. This traveling device is a straddle-type monorail device in which a vehicle body 2 is movably disposed along a single rail main rail 1, and a driving rail 3 engraved with a rack is provided on one side of the main rail 1. The drive wheel 4 in the form of a pinion gear provided on the vehicle body 2 is engaged with the rack of the drive rail 3, and the drive wheel 4 is rotated by a drive motor 5 disposed on the vehicle body 2 for driving. The drive wheel 4 rolls on the rail 3 without slipping, and the vehicle body 2 can be climbed up and down along the rail. The traveling device of this type includes, for example, a detector composed of a governor or a tachometer for detecting the rotational speed of the drive wheels 4 as a safety device that performs an emergency stop of the vehicle body 2. When it is detected that the speed of the vehicle body 2 has reached a specified speed or more, a device has been adopted in which the drive wheels 4 are braked to brake the travel of the vehicle body 2 (see, for example, Patent Document 1). .

  However, in the above safety device, even if the safety device operates normally, the vehicle body 2 can be stopped if the teeth of the pinion gears of the drive wheels 4 are destroyed by the load applied during the driving. As shown in FIG. 10, the pinion gear-like driven wheel 7 is engaged with the rack of the driving rail 3 separately from the driving wheel 4, and the driven wheel 7 driven by the brake is braked to apply the vehicle body 2. The use of a stop device that brakes the running of the vehicle as a safety device is generally performed at present (for example, Patent Document 2).

However, even with the stopping device provided on the driven wheel 7, the vehicle body 2 cannot be stopped when the rack of the driving rail 3 is broken. That is, the driving rails 3 and the driving wheels 4 are subjected to a load for propelling the vehicle body 2 and may be damaged due to friction of the tooth surfaces or metal fatigue. Therefore, it cannot be said that the above-described safety device is highly reliable, and there is a demand for the development of a new highly reliable safety device.
Japanese Utility Model Publication No. 6-51902 JP-A-6-171508

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a highly reliable traveling device safety device.

In order to solve the above-described problem, a safety device for a traveling device according to claim 1 of the present invention is configured such that a vehicle body 2 having drive wheels 4 is movably disposed on a main rail 1 along the main rail 1. A driving rail 3 with a carved rack is provided, and a pinion gear-like driving wheel 4 meshing with the rack of the driving rail 3 is rolled to the driving rail 3 to move the vehicle body 2 along the main rail 1. A traveling device of a rack and pinion system that travels, a stop rail 6 in which a rack is engraved along the main rail 1 is disposed, and a pinion gear shape that meshes with the rack of the stop rail 6 on the vehicle body 2 The driven wheel 7 is provided in rolling contact with the stop rail 6 and a brake device 8 that is not used during normal operation for braking the driven wheel 7 is provided.

According to this, it is conceivable that the drive rail 3 and the drive wheel 4 that are subjected to a load for propelling the vehicle body 2 may be damaged, and the brake of the drive system that is normally provided may not work. A brake device 8 is provided that is not used during normal operation for braking the driven rotation of the driven wheel 7 that rolls to the stop rail 6 that is not subject to damage and is not damaged when the vehicle body 2 is propelled. Therefore, the brake device 8 can reliably brake the vehicle body 2 during an emergency stop or the like, and can function as a highly reliable safety device.

  In addition to claim 1, the safety device for a traveling device according to claim 2 comprises the driving rail 3 and the stopping rail 6 made of members of the same material and shape, and the driving wheels 4 and The driven wheel 7 is composed of the same material and the same shape. According to this, the number of parts can be reduced and the manufacturing cost of the safety device can be reduced, and the misplacement of the driving rail 3 and the stopping rail 6 to the main rail 1 during construction can be prevented. be able to.

As described above, the present invention provides a stop rail along the main rail, and provides a follower wheel in contact with the stop rail on the vehicle body and is used during normal operation for braking the follower wheel. is provided with the brake system is not, according to the brake device, that brake the従働rotation of the driven wheel which rolls in no possibility of stopping rail damage in less load when the vehicle is promoted In addition , the vehicle body can be reliably braked during an emergency stop or the like, and can function as a highly reliable safety device. Furthermore, when the driving rail and the stopping rail are made of the same material and the same shape, and the driving wheel and the driven wheel are made of the same material and the same shape, the number of parts can be reduced and the safety device can be manufactured. The cost can be reduced, and it is possible to prevent mistakes in the arrangement of the drive rail and stop rail on the main rail during construction. In other words, a reliable safety device is inexpensive and easy to construct. It can be attached to the traveling device.

  The traveling device of the present example supports a vehicle body 2 on a single rail main rail 1 so as to be able to travel, and a rack-like driving rail 3 along one side of the main rail 1 along the length direction of the main rail 1. , The pinion gear-shaped drive wheel 4 pivotally supported on the vehicle body 2 is engaged with the drive rail 3, and the drive wheel 4 rotated by the drive motor 5 provided in the vehicle body 2 is connected to the drive rail 3. This is a pinion-rack type straddle-type monorail device that moves the vehicle body 2 along the main rail 1 with the propulsive force obtained by rolling, and is characterized by having a highly reliable safety device. Yes. Details will be described below.

  As shown in FIG. 2, the main rail 1 has an upper rail member 9 and a lower rail member 10 arranged in parallel in the vertical direction, and the upper rail member 9 and the lower rail member 10 are connected to each other at appropriate positions in the length direction. It is formed by being connected by a material 11. As shown in FIG. 4B, the main rail 1 is laid by being placed and supported on a plurality of rail bases 13 erected from an installation surface 12 such as the ground at an appropriate position in the length direction of the main rail 1. Has been. The rail base 13 embeds the foundation block 14 in the ground, and a pair of struts 15 are erected from a position sandwiching the main rail 1 in the foundation block 14 so as to protrude from the installation surface 12, and a pair of opposing struts 15 are opposed. The horizontal rails 16 are erected between the upper portions of the horizontal beams 16, and the main rail 1 is placed and fixed at a substantially central portion of the horizontal beams 16. In addition, when the protrusion height from the installation surface 12 of the support | pillar 15 in the rail stand 13 is high, the reinforcement | strengthening of the rail stand 13 is suitably performed by constructing the brace 17 between the support | pillars 15 etc. Further, column members 18 protrude vertically upward from both ends of the horizontal beam 16 of the rail base 13, and the auxiliary members extending in the length direction of the main rail 1 are respectively provided to the column members 18 on the same side of each rail base 13. A rail 19 is installed. Each auxiliary rail 19 is juxtaposed on both sides of the main rail 1 with a certain distance from the main rail 1. As shown in FIG. 5, a power supply line 20 is disposed on the side surface of the one auxiliary rail 19 on the main rail 1 side along the length direction of the auxiliary rail 19.

  As shown in FIGS. 1 and 5, the driving rail 3 is attached to one side surface of the upper rail member 9 of the main rail 1, and the stop rail 6 is attached to the other side surface of the upper rail member 9. Has been. Specifically, the drive rail 3 and the stop rail 6 are arranged along the length direction of the main rail 1. Further, the upper surfaces of the driving rail 3 and the stopping rail 6 are formed in a planar shape, and are flush with the planar upper surface of the upper rail member 9 so that the upper surface of the main rail 1 is formed widely. Thereby, the upper roller 31 mentioned later can be stably rolled on the upper surface of the main rail 1, and the running stability of the vehicle body 2 is improved. In this example, the driving rail 3 and the stopping rail 6 are constituted by rail members having the same material and the same shape with racks projecting up and down on the lower surface. Since the driving rail 3 and the stopping rail 6 having different functions are constituted by a common member in this way, the number of parts can be reduced and the manufacturing cost can be reduced. In the installation construction of 6, it is possible to simplify the configuration in which the misplacement of the rails 3 and 6 can not occur.

  The vehicle body 2 is configured by mounting a box-shaped cabin 22 on a chassis 21 as shown in FIGS. The guest room 22 of this example has a capacity of six people, and a plurality of chairs 23 on which passengers sit are arranged. The seat of the chair 23 is always kept horizontal, so that even if the vehicle body 2 is tilted up and down, the passenger sitting on the chair 23 is always kept horizontal and the riding comfort is improved. (Figs. 3 and 4). A cover 48 that covers the side surface of the chassis 21 is provided from the lower end of the cabin 22. The chassis 21 is formed by combining horizontal beams in a rectangular shape. The width dimension of the chassis 21 is set to be approximately the same as the dimension between the pair of auxiliary rails 19, and the lower vertical members 24 are suspended at the four front and rear corners of the chassis 21. In order to prevent the vehicle body 2 from swinging left and right, an auxiliary roller 25 that rolls on the auxiliary rail 19 is rotatably provided. In order to supply power to the vehicle body 2, a current collector 26 attached to a carriage 28, which will be described later, is brought into contact with the power supply line 20. More specifically, in order to maintain the contact of the current collector 26, the lower vertical member 24 on the side where the power supply line 20 is not provided is provided with one auxiliary roller 25 which rolls on the upper surface of the auxiliary rail 19, whereas A pair of auxiliary rollers 25 are provided on the lower vertical member 24 on the side where the electric wires 20 are provided so as to sandwich the auxiliary rail 19 vertically. In the figure, reference numeral 27 denotes a guest room support unit for placing and supporting the guest room 22. The cabin support portions 27 are provided at the four corners of the chassis 21 so that the cabin 22 can be stably supported by the chassis 21.

  Carriages 28 are respectively attached to the front and rear portions of the chassis 21 in the center in the left-right direction. The front and rear carriages 28a and 28b are each provided with a support mechanism for supporting the carriage 28 on the main rail 1 so as to run freely, a brake mechanism used during normal operation, and a drive mechanism for running the carriage 28 along the main rail 1. In addition to the above, the rear carriage 28b is provided with a brake device 8 as a safety device. Each carriage 28a, 28b is connected to the chassis 21 so as to be rotatable in the horizontal and vertical directions so as to be able to travel with respect to the main rail 1 that is curved left and right or inclined up and down. That is, 29 is a connecting mechanism provided with a vertical pin that allows the carriage 28 to be rotated in the horizontal direction, and 30 is a connecting mechanism provided with a horizontal pin that allows the carriage 28 to be rotated in the vertical direction. 30 are coupled to the chassis 21 so as to be rotatable in the horizontal and vertical directions.

  The support mechanism for the main rail 1 of the carriage 28 is a mechanism for supporting the carriage 28 on the main rail 1 so as to be able to travel. The upper roller 31, the lower roller 32, and the side rollers 33 that are rotatably attached to the carriage 28, respectively. Composed. The upper rollers 31 are rotatable in the vertical direction and are brought into rolling contact with the upper surface of the upper rail member 9 of the main rail 1. Two upper rollers 31 are arranged in a straight line at the front and rear portions of each carriage 28. . The lower roller 32 is rotatable in the vertical direction and is brought into rolling contact with the rack of the stop rail 6 attached to the main rail 1. The front carriage 28 has a rear part and a rear carriage 28 has a front part. Provided in each part. The side rollers 33 are rotatable in the horizontal direction and are brought into rolling contact with the side surfaces of the upper and lower rail members 9 and 10 of the main rail 1 so as to sandwich the upper and lower rail members 9 and 10 from both sides. A pair of side rollers 33 are arranged in parallel corresponding to the rail members 9 and 10, and the set of four side rollers 33 is set as one set, and this set of side rollers 33 is provided at the front and rear ends of the carriage 28. Yes. As described above, the upper roller 31, the lower roller 32, and the side roller 33 are in contact with the main rail 1 while sandwiching the main rail 1 in the vertical and horizontal directions. The derailment from the main rail 1 is prevented. Although only one lower roller 32 is provided for each carriage 28, each lower roller 32 is disposed on the center side in the front-rear direction, which is the center of gravity of the vehicle body 2. The main rail 1 can be efficiently clamped up and down by using the center of gravity. That is, the number of lower rollers 32 can be reduced and the structure of the traveling device can be simplified.

  The drive mechanism is a mechanism that transmits the rotational drive of the drive motor 5 to the drive wheel 4 via the speed reducer 34 to drive the drive wheel 4 to rotate. Specifically, the drive shaft of the drive motor 5 is connected to the start end of the reduction gear train of the speed reducer 34, and is coaxial with the drive wheel 4 and the sprocket 36 attached to the output shaft 35 connected to the end of the reduction gear train of the speed reducer 34. A transmission chain 38 is stretched over a sprocket 37 integrated with the drive wheel 5 so that the rotational drive of the drive motor 5 is decelerated, the torque is increased, and the drive wheel 4 is rotationally driven. The drive motor 5 is driven by electric power obtained from the power supply line 20 via the current collector 26. In addition, the heavy drive motor 5 is mounted on the carriage 28, and the center of gravity of the vehicle body 2 is positioned at the center in the front-rear direction, so that the front carriage 28a is at the rear position and the rear carriage 28b is at the front position. Each is arranged. Here, the drive wheel 4 is mounted on the lower position of the carriage 28 so as to be freely rotatable in the vertical direction, and the shape thereof is formed as a pinion gear that meshes with the rack of the drive rail 3. Thus, since the drive wheel 4 rotated by the drive motor 5 rolls while meshing with the rack of the drive rail 3, an efficient driving force of the vehicle body 2 with a high grip force is obtained, and the drive wheel 4 is laid in an ascending slope. The main rail 1 can also be climbed without slipping the vehicle body 2.

  The brake mechanism used during normal operation is used when the vehicle body 2 is stopped at a station where passengers go up and down. The brake mechanism includes an electromagnetic brake 39 attached to an extension of the drive shaft of the drive motor 5. The The electromagnetic brake 39 has an inner yoke attached to the drive shaft of the drive motor 5 and is arranged so as to surround a ring-shaped outer yoke fixed to the chassis 21 (drive motor 5) in a non-contact manner outside the inner yoke. The outer yoke is excited by passing an electric current through the exciting coil mounted on the yoke, and the magnetic flux generated in the outer yoke is passed through the inner yoke rotating together with the drive shaft, and is driven by the magnetic friction generated between the outer yoke and the inner yoke. For example, braking is applied to the rotation of the wheel 4. The electromagnetic brake 39 that can be used to brake the drive shaft in a non-contact manner is used in a brake mechanism that is frequently used during normal operation. The electromagnetic brake 39 has an appropriate braking force according to the strength of the excitation current. Can be applied to the drive shaft, brake control is easy, and there is no physical friction, so noise during braking and wear damage to the drive shaft can be prevented. Because it can.

  The brake device 8 as a safety device is used not in normal operation but in an emergency stop or the like, and is driven by rotation of a driven wheel 7 obtained by meshing with a rack of a stop rail 6 when the vehicle body 2 is traveling. Is transmitted to the brake shaft via the speed increaser 40, and a device for applying braking to the rotation output of the accelerated brake shaft by two types of brake mechanisms, a drum brake 41 and an electromagnetic brake 42, is employed. . Specifically, the driven wheel 7 is mounted on the lower position of the carriage 28 so as to be freely rotatable in the vertical direction, and the shape thereof is formed as a pinion gear that meshes with the rack of the stop rail 6. In this example, since the driving rail 3 and the stopping rail 6 are formed of a common rail material as described above, the driving wheel 4 and the driven wheel 7 are also configured using a common pinion gear. Can do. According to this, the number of parts can be reduced by the common use of the members, and the manufacturing cost can be reduced. Further, since the speed increaser 40 and each brake mechanism are heavy objects, they are mounted on the upper surface of the carriage 28. A sprocket 43 is coaxially attached to the driven wheel 7, and a transmission chain 45 is bridged between the sprocket 43 and a sprocket 44 attached to an input shaft connected to the start end of the gear train of the speed increaser 40. A brake shaft is connected to the end of the gear train of the machine 40, the driven rotation of the driven wheel 7 is increased, the torque is weakened, and the brake shaft is driven to rotate. The brake shaft is appropriately braked by the drum brake 41 and the electromagnetic brake 42. The drum brake 41 is automatically activated when it exceeds 1.3 times the normal rotation speed (allowable rotation speed) of the brake shaft. The electromagnetic brake 42 operates to apply strong braking to the brake shaft when it exceeds 1.4 times the normal rotation speed (allowable rotation speed) of the brake shaft. It is like that. In this example, the brake shafts are respectively provided on the front and rear sides of the carriage 28, and the drum brake 41 and the electromagnetic brake 42 are arranged side by side on the front and rear sides of the carriage 28 in accordance therewith.

  The electromagnetic brake 42 has the same structure as the electromagnetic brake 39 in the brake mechanism used during the above-described normal operation, and applies braking to the brake shaft by magnetic friction. The drum brake 41 is an internal expansion type. The drum 46 having a cylindrical inner surface is fixed to the carriage 28, a brake shaft is disposed on the cylinder core of the drum 46, and a spring that biases the brake shaft toward the cylinder core is provided. An arc-shaped brake shoe is attached to the drum 46, and the brake shoe is housed with a gap provided on the inner surface of the drum 46. The brake shoe receives the centrifugal force of the rotating brake shaft toward the outside. Usually, the brake shoe is prevented from coming into contact with the inner surface of the drum 46 by the bias of the spring, so that the brake shaft has a predetermined rotational speed. Only when the centrifugal force at that time exceeds the urging force of the spring, the brake shoe is expanded outward and brought into frictional sliding contact with the inner surface of the drum 46, so that braking of the rotation of the brake shaft is applied. ing. That is, according to this drum brake 41, the brake shaft is automatically braked when the vehicle body 2 reaches a predetermined speed, and the vehicle body 2 can be kept constant at the predetermined speed. Since the drum brake 41 applies braking to the brake shaft by physical contact friction, frictional heat is generated between the brake shoe and the drum 46. This frictional heat is provided outside the drum 46. The fins 47 can be efficiently air-cooled.

  In the traveling device having the above-described configuration, as described above, the brake device 8 as a safety device brakes the rotation of the driven wheel 7 that is driven by the stop rail 6 when the vehicle body 2 is traveling. ing. Here, the driving rail 3 and the driving wheel 4 are subjected to a load for the driving wheel 4 to be rotationally driven to propel the vehicle body 2, and damage due to tooth surface wear or metal fatigue due to the load is applied. On the other hand, the stop rail 6 and the driven wheel 7 are not subjected to a load for propelling the vehicle body 2 and are not likely to be damaged. In other words, in this brake device 8, the follower of the driven wheel 7 which is separate from the drive system and does not receive a load when propelling the vehicle body 2 and rolls to the stop rail 6 which is not likely to be damaged. Since braking is applied to the working rotation, the vehicle body 2 can be reliably braked even when the drive wheels 4 and the drive rail 3 are damaged by a load for propelling the vehicle body 2. It functions as a highly reliable safety device. The brake device 8 includes the driving rail 3 and the stopping rail 6 made of the same rail member (that is, a rail member having the same material and shape), and the driving wheel 4 and the driven wheel 7 having the same pinion gear. (I.e., the same material and the same shape pinion member), the number of parts can be reduced and the manufacturing cost of the safety device can be reduced. The arrangement of the rail 6 on the main rail 1 is also prevented from being misplaced, that is, it is possible to attach a highly reliable safety device to the traveling device at low cost and easily. . More specifically, the driving rails 3 and the stopping rails 6 attached to both sides of the main rail 1 have a flat upper surface flush with the upper surface of the upper rail member 9, and therefore the upper surface of the main rail 1. Thus, the rolling contact area of the upper roller 31 can be increased, and the vehicle body 2 can be stably driven.

BRIEF DESCRIPTION OF THE DRAWINGS It is a traveling apparatus of the example of embodiment of this invention, (a) is a schematic front view, (b) is a schematic left view, (c) is a schematic right view. (A) is a side view of a rail, (b) is a right side view of (a). (A) is a side view of the traveling device in a state where the vehicle body travels on a substantially horizontal rail, (b) is a schematic right side view of (a), and (c) is a perspective top view of (a). is there. (A) is a side view of the traveling device in a state where the vehicle body travels on an inclined rail, and (b) is a front view of an example of a rail base. It is a top view of the chassis part of the vehicle body which drive | works on a rail. It is a front view of the chassis part of the vehicle body which drive | works on a rail. FIG. 7 is a left side view of FIG. 6. FIG. 7 is a right side view of FIG. 6. It is a schematic side view of the traveling apparatus which shows the example of a prior art. It is a schematic side view of the traveling apparatus which shows the other example of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main rail 2 Car body 3 Drive rail 4 Drive wheel 5 Drive motor 6 Stop rail 7 Driven wheel 8 Brake device

Claims (2)

A vehicle body with drive wheels is movably disposed on the main rail, a drive rail having a rack engraved along the main rail is disposed, and a pinion gear-like shape that meshes with the rack of the drive rail . A rack and pinion type travel device that rolls the drive wheel to the drive rail and travels the vehicle body along the main rail, and is provided with a stop rail in which a rack is engraved along the main rail, The vehicle body is provided with a pinion gear driven wheel that meshes with the rack of the stop rail in contact with the stop rail and a brake device that is not used during normal operation for braking the driven wheel. Safety device for traveling equipment. 2. The traveling device according to claim 1, wherein the driving rail and the stopping rail are made of the same material and the same shape, and the driving wheel and the driven wheel are made of the same material and the same shape. Safety device.

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