JP3206314U - Orbital bicycle - Google Patents

Abstract

[PROBLEMS] To use a track laid on a construction site such as an underground facility to stably run a smooth top surface of a rail with tires and reduce weight as much as possible. To provide an orbital bicycle that can be easily lifted from the track and improved in usability. The track-riding bicycle 1 has a restraining action with respect to one rail R1 by guiding guide wheels 22 and 22 that are rotatably supported by a main body frame 4 along the rail R1. In response, the front and rear tire wheels 2, 3 roll on the rail R1. The bicycle 1 is mounted on the rail R2 side by rolling the auxiliary wheel 32 with a flange provided at the tip of the support arm 31 extending from the main body frame 4 side toward the rail R2 while being guided along the rail R2. The car is also subjected to restraint action. The structure for restraining the track traveling bicycle 1 to the rails R1, R2 is simple, and the weight of the track traveling bicycle 1 is reduced. [Selection] Figure 1

Description

  In this device, when constructing roads, railways, water storage culverts, or various underground facilities, vehicles such as minecarts that transport materials such as earth and sand (including waste materials and debris) and construction materials are used. The present invention relates to a track traveling bicycle capable of traveling on a rail track (rail for rail) laid on a construction site so that it can run.

  In recent years, underground construction sites include the construction of underground structures such as underground layers of buildings, underground tunnels such as subways, and rainwater storage facilities. For example, work sites are gradually deeper underground, such as several tens of meters underground. It has become. Also, some underground tunnels can be as long as several kilometers. In such underground tunnels, workers are tired when trying to move on foot, and it is time consuming and uneconomical and inefficient in long-distance tunnels.

  As a transport device for transporting transport materials such as earth and sand generated from construction sites such as underground, debris, rubble, etc., rails are laid on the bottom plate that is set up slightly from the bottom of the tunnel, and the excavated excavated soil is It is carried out by loading the rail on a railcar-type carriage capable of traveling and transporting it to a vertical shaft (see Patent Document 1). As for the rail, it is preferable that it is composed of a double track of the forward route and the return route, and it is preferable if the carriage can be passed without passing, but if the size of the mine is limited, the rail is laid with a single wire, In some cases, a descent line may be provided at an appropriate location so that the carriage can pass by.

  In addition, proposals have been made regarding an automatic track bicycle used for on-site confirmation at an early stage in a disaster or on a patrol of a track (Patent Document 2). In such an automatic track bicycle, it is necessary to make a detour when it becomes impossible to move forward at the troubled part of the track, and after checking the inspection, it is necessary to return to the base again from the site. Therefore, it is necessary to reverse the traveling direction of the automatic track bicycle. However, the automatic track bicycle has a considerable weight, and the reversing work requires a plurality of hands and is troublesome. Therefore, in Patent Document 2, as a reversing device for an automatic track bicycle, a protrusion projecting downward is provided at the bottom of the carriage at the center of gravity of the automatic bicycle body, and the protrusion is placed on an appropriate cradle. The automatic bicycle body is lifted from the rail by being engaged with and supported by an engagement hole provided in the support body positioned so that it can be easily reversed around the protrusion.

  Furthermore, equipment such as gas conduits may pass under the seabed or in the mountains. In such cases, underground tunnels are constructed in order to install equipment such as gas conduits or to form passages for workers to pass through. . The size of the underground tunnel is the minimum necessary space, so the inside of the tunnel is narrow, but it may continue for a very long distance. There are various types of underground mine transport devices depending on the inner diameter of the tunnel, such as trolleys, carts, and bicycles, and the intended use. By providing, it is possible to come and go without changing the direction of the moving device in a narrow space in the tunnel. As for the power, it is intended to correspond to the moving distance by using human power or electric power.

  As one of the underground movement devices that enable the two-way operation that is used when carrying workers and goods in such tunnels, a drive unit that rotates the wheels in the two-way direction in the device body Without disassembling / assembling parts without changing the front / rear direction of the device, and by turning the device around the support and lifting the device around to change the direction There has also been proposed a four-wheeled bicycle-like moving device that can be moved safely and easily in a narrow space in a tunnel in both the front and rear directions (see Patent Document 3).

  The main body of this underground movement device has two handles provided on the front and rear wheels and a single-seat type provided with one saddle provided between the two handles, or one handle provided in the center, It is formed in a single-seat type with two saddles provided on the wheel side. The drive part of the main body includes a main sprocket gear that rotates via a pedal, a sub sprocket gear integrated with the axles of the front and rear wheels, and a main sprocket gear and one of the front and rear sub sprocket gears. It has a chain suspended between them.

  The above-described bicycle for underground movement has a bicycle with a special mechanism such as a four-wheel carriage structure of a railway, and the structure of the bicycle as a whole is complicated and an increase in weight is inevitable. is there. In many cases, the applied track is not a double track but a single track. If there is a passing trolley that is loaded with earth or sand, the bicycle is lifted and moved out of the track, leaving the track to the trolley. There is a need. In such a case, unless the weight of the bicycle is reduced, it is difficult and difficult to move the bicycle out of the track and to put it back on the track.

Japanese Patent No. 3292696 No. 7-47246 JP 2007-145172 A

  Therefore, in a track-riding bicycle that runs on a track laid on a construction site such as an underground facility, it has a simple structure that suppresses the increase in weight as much as possible, and the smooth top surface of the rail runs stably with the bicycle tire wheels. There is a problem to be solved in terms of making it possible to improve the usability of a track bicycle.

  The purpose of this device is to solve the above-mentioned problem, and it is possible to stably run with a tire on the smooth top surface of a track rail laid on a construction site such as an underground facility, and the overall weight. Even if it is necessary to lift, such as when retreating when encountering a crossing trolley or reversing the traveling direction, it is easy to lift and improve the ease of use. Is to provide a bicycle.

  In order to solve the above-described problems, a track-riding bicycle according to the present invention includes a front and rear tire wheel that can roll on one of the two rails constituting a railroad track, and the front and rear tire wheels that rotate. An orbital bicycle having a main body frame to be supported, wherein a guide wheel guided along the one rail is rotatable in the main body frame of the bicycle in a region between the front and rear tire wheels. The body frame of the bicycle is supported by the tip of a support arm that extends from the body frame toward the other rail and is guided while rolling along the other rail. A wheel is rotatably supported, and one or both of the guide wheel and the auxiliary wheel are configured to prevent the tire wheel from being removed from the one rail. It is characterized in that the body frame is a flanged rotating wheel for restraining the movement in the lateral width direction of the rail.

  According to this track bicycle, one or both of the guide wheel and the auxiliary wheel are flanged rotating wheels that restrain the main body frame from moving in the left-right width direction of the rail. Either one or both flanged rotating wheels act in the lateral direction between the flange and the rail to exert a restraining action on the main body frame, so that the front and rear tire wheels of the bicycle are not removed from the one rail. Roll on one of the rails. The restraining action extends directly to the main body frame when the guide wheel acts, and extends to the main body frame via the support arm when the auxiliary wheel acts. In this way, the track bicycle is restrained in the left-right width direction of the rail from one rail or the other rail via the flanged rotating wheel, so that the front and rear tire wheels roll along the rail, It is possible to travel on the rails of the track without taking off on either the left or right side.

In this orbital bicycle, only the guide wheel can be a rotating wheel with both-side flanges provided with flanges that can contact the head side surfaces on both sides of one rail.
In this case, only the guide wheels are flanged rotating wheels that restrain the movement of the main body frame in the rail width direction, and the front and rear tire wheels of the bicycle work between the side flanges of the guide wheels and one rail. Due to the restraining action exerted on the frame, it rolls on the one rail without being removed. Since the auxiliary wheel is not a rotating wheel with a flange, it does not restrict the movement of the body frame in the rail width direction, but it can roll on the other rail, preventing the bicycle from tilting toward the other rail. To do.

In this track traveling bicycle, the guide wheel is a rotating wheel with a flange on both sides provided with flanges capable of abutting against the head side surfaces on both sides of the one rail, and the auxiliary wheel is disposed on the inner side of the other rail. It can be considered as a rotating wheel with a one-side flange provided with a flange capable of abutting against the head side surface.
In this case, on one rail side, the guide wheel is a rotating wheel with double-side flanges having flanges that can abut against the head side surfaces on both sides, and the left and right flanges are stepped on either side from the top of one rail. Without being guided along the one rail. In addition, on the other rail side, the auxiliary wheel is a rotating wheel with a one-side flange including a flange capable of abutting on the inner side surface of the other rail, and is stepped outward from the other rail by the one-side flange. Without rolling along the other rail. The tire wheels at the front and rear of the bicycle work between the flanges on one side of the guide wheel and one rail and exert a restraining effect on the main body frame, and work between the one side flange of the auxiliary wheel and the other rail on the main body frame. By the restraining action, it rolls without taking off the wheel on the one rail.

In this orbital bicycle, the guide wheel is a one-side flanged rotary wheel provided with a flange capable of contacting the inner side surface of the one rail, and the auxiliary wheel is an inner head of the other rail. It can be considered as a rotating wheel with a one-side flange provided with a flange capable of contacting the side surface.
In this case, on one rail side, the guide wheel is a one-side flanged rotary wheel having a flange capable of coming into contact with the inner head side surface, and the inner flange does not step off from one rail to the outside. In addition, on the other rail side, the auxiliary wheel is a rotating wheel with a one-side flange including a flange that can come into contact with the inner side surface of the other rail, and is stepped outward from the other rail by the one-side flange. There is no. By the interaction between the guide wheel and the auxiliary wheel, the guide wheel and the auxiliary wheel are guided along the one or the other rail without stepping outwards in the same manner as in the case of a normal railway wheel. As a result of the action, the tire wheels on the front and rear of the bicycle are guided between the guide wheels, the auxiliary wheels, and one or the other rail because they are guided or rolled without being stepped on either side of the left and right (inside and outside) of both rails. By the restraining action that works in cooperation and reaches the main body frame, it rolls without taking off the wheel on the one rail. According to the form of the guide wheel and the auxiliary wheel, the bicycle can pass through the point while traveling even if the track rail is branched and merged at the point.

In this track traveling bicycle, the flange of the flanged rotating wheel may be configured such that a surface that can contact the head side surface of the rail is a conical surface.
Rails of railroad tracks laid on a mine shaft may not be laid with high accuracy, and gaps and misalignments may occur in particular at the rail joints. By using a conical surface to contact the rail head side surface of the flange of the rotating wheel with a flange of the guide wheel mechanism or auxiliary wheel mechanism, there is a gap or misalignment without the flange riding on the rail top surface. The rail joints can pass over smoothly.

In this orbital bicycle, the guide wheel is composed of two guide wheels that are spaced apart from the front and back of the main body frame, and the auxiliary wheel is disposed corresponding to an intermediate position between the two guide wheels. Can be.
When the guide wheel is a two-wheel guide wheel that is spaced apart from the front and rear of the bicycle body frame, the bicycle is separated from one rail in the longitudinal direction of the rail. It will be restrained reliably without stepping on the rail at two locations, and the front and rear tire wheels can travel more safely without being derailed from one rail to either the left or right side. Since the position of the auxiliary wheel is arranged corresponding to the middle position of the two guide wheels, the balance of the restraining action and the supporting action from both rails to the bicycle is improved overall, and the front and rear tire wheels are more reliable. It is possible to run while rolling on one rail.

In this orbital bicycle, the support arm is folded with respect to the main body frame along the main body frame and a deployment position extending from the main body frame toward the other rail by a rotation connecting portion. The support arm is pivotably connected to a closed position, and the support arm can be locked to the main body frame so as not to rotate at the deployed position and the closed position by arm locking means, respectively. can do.
When the bicycle is run on the track rail, it is not preferable that the position of the auxiliary wheel shifts due to the swinging movement of the support arm. Therefore, it is desirable to lock the support arm so that the expanded state of the support arm with respect to the main body frame is maintained.
Also, it may be necessary to remove the bicycle from the track rail, such as when the bicycle encounters a cart and passes it preferentially. If the auxiliary wheel is deployed with the support arm, the bicycle may be bulky and difficult to remove from the track rail. Therefore, the auxiliary wheel and the support arm that were open to the side can take a closed position along the bicycle body frame, and the reverse operation can then be performed when the bicycle is returned to the track rail. Preferably, the support arm is allowed to rotate between the deployed position and the closed position.
Further, when the support arm is brought to the closed position, it is preferable that the support arm is locked with respect to the main body frame so that the support arm is maintained in a closed state with respect to the main body frame and the support arm is not expanded.
For such a support arm, it is allowed to rotate between the deployed state and the closed state by providing a rotation connecting portion, and the body frame is provided at either the deployed position or the closed position by providing arm lock means. When the support arm can be locked and the support arm is rotated again, the support arm is unlocked by the arm lock means.

  In this track traveling bicycle, the front tire wheel can be fixed to the main body frame so as not to be steered by a steering lock means. If the steering operation by the bicycle handle is free, both tire wheels, particularly the front tire wheels, easily step off from the rail and cannot run on the rail. Therefore, it is preferable to fix the front tire wheel to the main body frame so that the steering operation cannot be performed by the steering lock means. When the steering of the front tire wheel is fixed by the steering lock means, the steering operation by the steering wheel cannot be performed, but the front and rear tire wheels can run without problems on the straight rail. Even on a curved railway track, its curvature is small as far as the length of the bicycle is seen (the radius of curvature is large), and at a distance as short as the length of the bicycle, the track approximates a straight line. Since the tire wheel of a bicycle is a rubber tire, the tire wheel can roll without slipping on the rail by rolling while slightly sliding in the lateral direction on the top surface of the curved track rail.

In this orbital bicycle, the main body frame includes a body frame that is originally provided in the bicycle and a support frame fixed to the body frame, and the support frame is connected to a down tube that defines a lower side of the body frame. And two or more L-shaped pipes extending downward and laterally and one front and rear pipe fixed to the tip of the L-shaped pipe.
A body frame is made by adding a support frame to a body frame that is inherent to a bicycle. The support frame includes an L-shaped pipe and front and rear pipes, both of which can be fixed to the body frame inherent to the bicycle and to each other by welding or the like, so that the structure is simple and low cost. Can be produced. One front-rear pipe extending in the front-rear direction is supported by a plurality of L-shaped pipes so as to extend in the front-rear line so as to be parallel to the front-rear center line of the bicycle body. Arranged in a symmetrical plane that passes vertically through the center.

In this orbital bicycle, a weight for preventing the auxiliary wheel from floating from the other rail can be attached to the support arm.
Since the auxiliary wheel rotatably supported by the tip end portion of the support arm is guided while rolling along the other rail, it is difficult to prevent the auxiliary wheel from floating from the other rail. Therefore, by attaching a weight to the tip of the support arm, a moment is applied to the vehicle body via the support arm so as to be pressed against the other rail, and the auxiliary wheel is lifted from the other rail. It is preferable to prevent and maintain the function of the auxiliary wheel.

In this orbital bicycle, the main body frame or the support arm can be provided with a footrest on which a driver's feet can be placed.
In most cases, the railroad track laid in the mine shaft is a trackless roadway without a roadbed in which a sleeper to which the rail is fixed is embedded. There is nothing in the tunnel that corresponds to the ground that stably supports the driver's feet when stopping the bicycle, and the sleepers are laid at regular intervals and the rails from the tire treads to the sleepers There is a distance by the height. Therefore, it is preferable to provide a footrest for putting a foot on the bicycle so that the driver can rest his / her feet with peace of mind.

  In this orbital traveling bicycle, the bicycle may be a children's bicycle, an assembled bicycle, or an electrically assisted bicycle, and the tire wheel diameter may be a small bicycle with an inch display indicating 16 inches or less. Small bicycles such as children's bicycles are easy to use in narrow tunnels. The assembled bicycle can be folded compactly, and the electrically assisted bicycle is easy to use when there are long tunnels and slopes.

  According to this track bicycle, one or both of the guide wheel and the auxiliary wheel are flanged rotating wheels that restrain the main body frame from moving in the left-right width direction of the rail based on the interaction with the rail. Therefore, either or both of the guide wheel and auxiliary wheel, which are rotating wheels with flanges, work in the lateral direction between the flange and the rail to restrain the body frame, and the tire wheels on the front and rear of the bicycle are rails. It rolls on the one rail without taking off the wheel to the left or right, and as a result, the bicycle can travel safely on the rail. In addition, according to this track traveling bicycle, the mechanism for preventing the bicycle tire wheels from being removed from the track rail has a very simple structure, and therefore, the overall weight of the bicycle is greatly suppressed. Can do. When used in underground tunnels, especially narrow and long tunnels, this track-running bicycle does not require a large force when placing the bicycle on the track rail or when it is removed from the track rail, and it is extremely easy to handle. It is.

FIG. 1 is a perspective view showing an embodiment of a track bicycle according to the present invention. FIG. 2 is a plan view showing an example of a main part of the track traveling bicycle shown in FIG. FIG. 3 is a plan view showing another example of the main part of the orbital bicycle according to the present invention. FIG. 4 is a plan view showing still another example of the main part of the orbital bicycle according to the present invention. FIG. 5 is a diagram showing another example of the guide wheels and auxiliary wheels of the track bicycle according to the present invention. FIG. 6 is a diagram showing an example in which a footrest is provided in a track bicycle according to the present invention.

  Hereinafter, embodiments of a track bicycle according to the present invention will be described with reference to the accompanying drawings. An embodiment of a track bicycle according to the present invention is shown in a perspective view in FIG. FIG. 2 is a plan view for explaining an example of a mechanism for preventing the bicycle wheel which is the main part of the track traveling bicycle shown in FIG. 1 from stepping off from the track rail.

  A track traveling bicycle 1 (hereinafter, abbreviated as “bicycle 1”) shown in FIG. 1 is capable of rolling on one rail R1 of two rails R1 and R2 constituting a rail track RW as a main structure. The front and rear tire wheels 2 and 3 and the main body frame 4 that rotatably supports the axles of the front and rear tire wheels 2 and 3 by bearings are provided. The bicycle 1 includes a handle 5, a handle shaft 6 that is a rotation shaft of the handle 5, a saddle 7 on which a driver sits, a foot pedal 8, a drive sprocket 9 that is rotationally driven by the foot pedal 8, and an axle of the rear tire wheel 3. A chain 11 that is wound around a driven sprocket 10 attached to the vehicle, a drive sprocket 9 and a driven sprocket 10, and transmits the driving force from the foot pedal 8 to the tire wheel 3 of the rear wheel, and left and right brake levers 12, 12. The brakes 14 and 14 etc. which brake the wheels 2 and 3 through the wire harnesses 13 and 13 by the above operation are provided. Since these structures are well known in the field of bicycles, further description is omitted.

  The main body frame 4 includes a body frame 15 that is originally provided in the bicycle 1, and a support frame 21 that is fixed to the body frame 15 in order to provide a guide wheel mechanism 20 and an auxiliary wheel mechanism 30, which will be described later, which are essential parts of the present embodiment. I have. The vehicle body frame 15 includes a head tube 16 through which the handle shaft 6 is inserted, a chain stay 17 that supports the rear tire wheel 3, and a down tube 18 that connects these to define the lower side of the vehicle body frame 15. A support frame 21 is attached to the vehicle body frame 15 by welding in a region between the front and rear tire wheels 2 and 3 (in the vicinity of the pedal 8) below the down tube 18. Specifically, the support frame 21 is attached to the down tube 18 of the vehicle body frame 15 by welding, and two L-shaped pipes 23, 23 as a plurality of vertical members extending downward and laterally from the down tube 18, L It has a single horizontal front and rear pipe 24 as a front and rear member connected and fixed to the tips of the shaped pipes 23 and 23 by welding. The L-shaped pipes 23, 23 extend across a bilaterally symmetric plane passing vertically through the center of the body of the bicycle 1, and the anteroposterior pipe 24 fixed at the tip thereof is aligned with the symmetric plane so as to be parallel to the symmetric plane. It extends to. Therefore, when the bicycle 1 is placed on the railroad track RW, the L-shaped pipes 23 and 23 extend so as to cross over the top surface Rt of the rail R1, and the front and rear pipes 24 are formed on the top surface Rt of the rail R1. A diagonally upper portion extends parallel to the rail R1.

  In order that the bicycle 1 can travel without stepping on the smooth top surface Rt of the rail R1, the bicycle 1 is connected between the body frame 4 of the bicycle 1 and one rail R1 and the other rail R2, respectively. There is a device to guide the driving. That is, the support frame 21 attached to the body frame 15 of the bicycle 1 by welding is provided with a guide wheel mechanism 20 that is guided along the rail R1, and the support frame 21 is provided along the rail R2. An auxiliary wheel mechanism 30 that is guided while rolling is provided.

  The guide wheel mechanism 20 is configured such that two flanged guide wheels 22 and 22 are arranged directly forward and backward with respect to the support frame 21 and are rotatably supported as flanged rotary wheels. Plate-shaped attachments 25 and 25 are respectively attached to the front and rear end portions of the front and rear pipes 24 on the side where the L-shaped pipes 23 and 23 are placed, and each attachment 25 has a guide wheel with a flange. 22 is rotatably supported. Therefore, the guide wheels 22 and 22 with flanges are arranged so that their installation positions are not changed via the support frame 21 with respect to the main body frame 4 (body frame 15). In the region, it is rotatably supported at a position immediately above one rail R1.

  As shown in detail in FIG. 2, each flanged guide wheel 22 includes a central wheel portion 26 and flanges 27, 27 provided integrally with the wheel portion 26 on both the left and right sides thereof. ing. Each flanged guide wheel 22 intersects at right angles with a symmetrical plane passing vertically through the center of the vehicle body of the bicycle 1 at the center of the wheel portion 26. Therefore, the guide wheels 22 with flanges are arranged in alignment with the front and rear tire wheels 2 and 3 with respect to the main body frame 4, and in the state where the bicycle 1 is placed on the railroad track RW, the wheels The portion 26 corresponds to the top surface Rt of the rail R1, and the left and right flanges 27, 27 correspond to the head side surfaces Rs, Rs of the rail R1. If the tire wheels 2 and 3 try to step off from the rail R1 to the left or right side, the flanges 27 and 27 come into contact with and resist the head side surfaces Rs and Rs of the rail R1. 22 is restrained in the left-right direction with respect to the rail R1. This constrained state generated between the flanged guide wheel 22 and the rail R1 is transmitted to the main body of the bicycle 1 via the support frame 21 and is transmitted from the body frame 15 to the tire wheels 2 and 3, and the tire wheels 2 and 3 are connected to the rail. There is no stepping off from R1, and it rolls while being guided along rail R1.

  Since the two flanged guide wheels 22 and 22 are spaced apart from each other on the front and rear of the bicycle 1, the bicycle 1 is restrained in two directions on the rail R1, and the front and rear tire wheels 2 and 3 are It is securely guided to the rail R1 through the main body frame 4 and the flanged guide wheels 22, 22, and travels safely on the rail R1 without taking off from the rail R1 to the left or right side. Note that the height positions of the two flanged guide wheels 22, 22 are from the state before the worker rides on the bicycle 1 until the tire wheels 2, 3 are slightly deformed by the load, It is sufficient that the height 27 abuts on the head side surface Rs of the rail R1, and the wheel portion 26 does not necessarily have to be in contact with the top surface Rt of the rail R1. In a state where the wheel portion 26 is in contact with the top surface Rt of the rail R1, the running resistance can be reduced by rolling the wheel portion 26 as compared with a case where the wheel portion 26 does not roll.

  As shown in FIGS. 1 and 2, the auxiliary wheel mechanism 30 extends from the central portion of the front and rear pipes 24 of the support frame 21 toward the other rail R <b> 2 in a manner that intersects perpendicularly to the rails R <b> 1 and R <b> 2. The auxiliary arm 32 with a flange as a rotating wheel with a flange, which is rotatably supported by a support arm 31 and an attachment 35 attached to the tip of the support arm 31 and is guided while rolling along the rail R2. And. The support arm 31 is provided on the vehicle body frame 15 via the support frame 21, but the force relationship is the same as extending from the main body frame 4 of the track bicycle 1.

  The auxiliary wheel 32 with a flange includes a wheel portion 33 that rolls on the rail R <b> 2, and a flange 34 that is provided integrally with the wheel portion 33 on the rail R <b> 1 side of the wheel portion 33. The flanged auxiliary wheel 32 is restrained from being stepped outward from the rail R2 (opposite side to the rail R1) by the action of the flange 34 engaging the head side surface Rs of the rail R2, similarly to a normal railway wheel. The restraining action extends to the body frame 15 of the bicycle 1 via the support arm 31 and the support frame 21. The movement of the flanged auxiliary wheel 32 to be stepped inward from the rail R2 is countered by the restraining action exerted between the flanged guide wheels 22 and 22 provided on the main body frame 4 and the rail R1. The action of the flanged auxiliary wheel 32 that rolls while being guided along the rail R2 contributes to the rolling of the tire wheels 2 and 3 before and after the track traveling bicycle 1 without taking off the rail R1.

  When the bicycle 1 tends to tilt toward the rail R2, the support frame 21, the support arm 31 and the auxiliary wheel 32 with flange receive resistance against the tilt from the rail R2, so that the bicycle 1 falls or tire wheels 2, 3 does not escape from the rail R1. On the other hand, when the bicycle 1 tries to tilt toward the opposite side of the rail R2, a force against this cannot be obtained. Therefore, in the auxiliary wheel mechanism 30, the weight 45 so as to sandwich the attachment 35 at the tip of the support arm 31. Can be removed, and a moment is applied to the bicycle 1 to prevent the flanged auxiliary wheel 32 from being lifted off the rail R2.

  As described above, the bicycle 1 is moved laterally from the rail R1 through the guide wheels 22 and 22 with the flanges and the support frame 21 and from the rail R2 through the auxiliary wheels 32 with the flanges, the support arms 31 and the support frame 21. Due to the restraining action, the front and rear tire wheels 2 and 3 roll without rolling off on the rail R1, and the bicycle 1 can travel on the rail R1 of the railroad track RW without stepping on either side. it can.

  With respect to the support arm 31, with respect to the support frame 21 (in the present embodiment, the front and rear pipes 24), a deployed position (FIG. 1) that extends from the support frame 21 toward the rail R 2 by the rotation connecting portion 40; It is connected so as to be rotatable between a closed position (imaginary line position in FIG. 2) folded along the support frame 21 (front and rear pipes 24). The rotary connecting portion 40 can be rotated around the vertical axis of the bolt 42 by a bolt 42 at the base end portion of the support arm 31 on a frame 41 having a U-shaped cross section attached to the front and rear pipes 24 by welding. It is the structure connected to.

  When the bicycle 1 is run on the track rail RW, it is not preferable that the position of the auxiliary wheel 32 supported by the support arm 31 deviates from the position on the rail R2. Therefore, it is preferable to lock the support arm 31 so as to remain in the deployed state. Further, when the support arm 31 is brought to the closed position, it is preferably locked so as to maintain the closed position so as not to expand for a necessary period. For this purpose, arm locking means 43 is provided so that the support arm 31 can be locked to the support frame 21. The arm lock means 43 is constituted by a lock metal fitting formed in the frame body 41 and the support arm 31 and inserted into the aligned hole at a position slightly away from the bolt 42 which is the rotation center. Can do. By inserting a locking metal fitting into these alignment holes, the support arm 31 can be locked in a non-rotatable state at the deployed position.

  When the bicycle 1 encounters, for example, a carriage for transportation as an oncoming vehicle on the same railroad track RW, it is necessary to remove the bicycle 1 from the track rail RW and retreat, and pass the cart first. When the auxiliary wheel 32 is in the deployed state together with the support arm 31, the bicycle 1 may be bulky and difficult to remove from the track rail RW. Therefore, it is preferable that the support arm 31 is rotatable so that the auxiliary wheel 32 and the support arm 31 can take a closed position along the support frame 21 of the bicycle 1. By releasing the lock by the arm lock means 43, the support arm 31 and the auxiliary wheel 32 can be rotated by the rotary connecting portion 40 from the deployed position to the closed position. In the closed position, the support arm 31 inserts locking metal fittings into the holes formed in and aligned with the engagement pieces 44 attached to the front and rear pipes 24, respectively. It can be locked in a non-rotatable position in the closed position. When the bicycle 1 is returned to the railroad track RW again, the bicycle 1 is returned from the closed position to the deployed position and locked by the arm lock means 43.

  The bicycle 1 preferably includes a steering lock means 46 for fixing the handle shaft 6 to the main body frame 4. If the handle shaft 6 of the bicycle 1 is free to rotate, the steering wheel can be operated, so that the front and rear tire wheels 2, 3 and particularly the front tire wheel 2 are easily removed from one rail R1. . Therefore, the steering lock means 46 including two connecting rods is fixed to the vehicle body frame 15 m so that the front tire wheel 2 is not steered. When the bicycle 1 runs on the curved railway track RW, the curvature is small in light of the size of the bicycle (the radius of curvature is large), and the tire wheels 2 and 3 are rubber tires. Even if it is fixed, the rubber tire can run on a curved track by rolling while sliding in the left-right direction with respect to the top surface Rt of the R1 rail. If the steering lock means 46 is provided, the steering operation of the handle 5 cannot be performed, but the handle 5 which is bulky because it protrudes to the left and right in a narrow tunnel is folded in parallel to the vehicle body separately from the steering of the tire wheel 2. May be required. Therefore, it is preferable that the handle 5 and the handle shaft 6 can be connected to each other and released by providing a handle shaft locking means 47 that is conventionally provided in a bicycle.

  FIG. 3 is a plan view showing another example of the main part of the orbital bicycle according to the present invention. In the example shown in FIG. 3, the same components as those used in the example shown in FIG. In this example, only the guide wheels 22 and 22 are both-side flanged rotary wheels provided with flanges 27 and 27 that can come into contact with the head side surfaces Rs and Rs on both sides of one rail R1, respectively. Although it has the part 53, it is not a rotating wheel with a flange. The front and rear tire wheels 2, 3 of the bicycle 1 act on the one rail R 1 by a restraining action that acts between the side flanges 27, 27 of the guide wheels 22, 22 and the one rail R 1 and exerts on the main body frame 4. Roll without taking off. Since the auxiliary wheel 52 is not a rotating wheel with a flange, it does not restrain the movement of the main body frame 4 in the rail width direction. However, since the auxiliary wheel 52 can roll on the other rail R2, the other rail R2 side of the bicycle 1 is provided. Prevent tilting to.

  FIG. 4 is a plan view showing still another example of the main part of the orbital bicycle according to the present invention. Also in the example shown in FIG. 4, the same components as those used in the example shown in FIG. In this example, the guide wheels 62, 62 have a one-side flanged rotation provided with a rotatable wheel portion 66 corresponding to one rail R1 and a flange 67 capable of contacting the inner side surface Rs of the one rail R1. The auxiliary wheel 72 is a rotating wheel with a one-side flange including a wheel portion 73 capable of rolling on the other rail R2 and a flange 74 capable of contacting the inner side surface Rs of the other rail R2. is there. On one rail R1 side, the guide wheels 62, 62 are not stepped outward from one rail by the inner flange 67, and on the other rail R2 side, the guide wheels 62, 62 are outside from the other rail R2 by the one flange 74. Don't step on. As described above, the guide wheels 62 and 62 and the auxiliary wheel 72 are operated in cooperation with each other between the rails R1 and R2. You can be guided to either the left or right (inside / outside) without stepping off. Therefore, the front and rear tire wheels 2 and 3 of the bicycle 1 are rolled on the one rail R <b> 1 without being derailed by a restraining action that extends to the main body frame 4 based on the cooperating action. According to the form of the guide wheels 62 and 62 and the auxiliary wheel 72, the bicycle 1 can pass through the point while traveling even if the track rail RW is a type that branches and merges at the point.

  The bicycle 1 is preferably a children's bicycle, an assembled bicycle, or a power-assisted bicycle. For example, a bicycle with a small tire diameter, such as 16 inches or less, is easy to use in a narrow tunnel. In addition, the traveling speed in the mine has a speed limit for safety and does not travel at a high speed, so a bicycle with a small tire diameter is sufficient. Folding the assembled bicycle compactly is convenient for carrying around, and the electric assist bicycle is easy to use when there are long tunnels and slopes.

  FIG. 5 is a diagram showing another example of the guide wheels and auxiliary wheels of the track bicycle according to the present invention. Elements that are not different from the example shown in FIG. In this example, the flange of the guide wheel with the flange of the guide wheel mechanism 20 provided on the support frame 21 and the flange of the auxiliary wheel with the flange of the auxiliary wheel mechanism 30 provided on the support arm 31 are conical surfaces. . Most of the rail tracks laid in the mine are on the spot where the period of use is limited. Therefore, even when a smooth curved track should be laid, a straight track with a relatively short length is sequentially connected without using a bent rail, so that the curved track is approximated by a polygonal track. There are many cases. In such a case, a large step is rarely generated particularly at the joints Rj and Rj of the rails R1 and R2, but a gap or a positional deviation may occur as shown in the figure. When the plate surfaces of the flanges of the guide wheel and the auxiliary wheel are vertical, the guide wheel and the auxiliary wheel are moved to the top surface Rt of the rail R1 at the joint Rj where there is a gap or misalignment. There is a case where the wheel cannot be moved smoothly and the wheel is removed from the rail R1.

  Therefore, as shown in FIG. 5, with respect to the guide wheel 82 with the flange of the guide wheel mechanism 20, the inner surfaces facing the rail R1 of the flanges 87, 87 on both sides of the wheel portion 86 are formed on the conical surfaces 87a, 87a. Is preferred. In the case of a guide wheel having a flange only on one side, the inner surface can be formed in a similar conical surface. In the flanged auxiliary wheel 92 of the auxiliary wheel mechanism 30, the surface of the flange 94 provided on one side of the wheel portion 93 is also formed with a conical surface 94a on the side facing the rail R2. These conical surfaces 87a and 94a can cross over while absorbing gaps and left and right positional shifts generated in the joints Rj and Rj of the rails R1 and R2 by the flexible contact action. Therefore, the front and rear tire wheels 2 and 3 can smoothly pass through the rail joints Rj and Rj in which gaps and misalignment have occurred without being removed.

  FIG. 6 is a view showing an example in which a footrest is provided in the orbital bicycle according to the present invention. Elements that are not different from the example shown in FIG. In most cases, the railroad track RW laid on the mine shaft is a trackless roadway without a roadbed in which the sleepers Sr to which the rails R1 and R2 are fixed are embedded. The sleepers Sr are laid at regular intervals, but there is a distance from the tire to the sleepers Sr by the height of the rail R1. Therefore, when the bicycle 1 traveling on the railroad track RW stops, there is nothing equivalent to the ground that stably supports the driver's feet, and even if the feet are lowered on the sleepers Sr, the stopped driver There is not always a sleeper Sr at the foot.

  Therefore, as shown in FIG. 6, it is preferable to provide a footrest on which the foot is placed on the bicycle. FIG. 6 shows an example in which footrests 95 and 96 are provided in the example shown in FIG. The footrest base 95 is a base for the right foot, and is provided along a portion of the longitudinal range of the support arm 31 that is closer to the rotary connecting portion 40 side. In the support arm 31, a weight holder 98 capable of placing or accommodating a weight 99 is provided adjacent to and continuously from the footrest 95. In the illustrated example, the footrest 95 and the weight holder 98 are provided on the rear side of the extended support arm 31, but provided on the support arm 31 if they do not interfere with other members on the bicycle 1 side. Also good.

The footrest 96 for the left foot is attached to the vehicle body frame 15 or the support frame 21 via an appropriate stay 97 or a fixing tool along the L-shaped pipes 23 and 23. The footrest 96 for the left foot is in the form of a plate that is elongated in the front-rear direction of the bicycle 1, and the body frame 15 is positioned closer to the body frame 15 than the foot pedal 8 so as not to interfere with the pedal 8 for the left foot. It is fixedly arranged to follow. By placing it near the vehicle body frame 15, when a foot is put on the footrest 96 when getting on and off the bicycle 1, the moment acting in the direction of tilting the bicycle 1 to the left side by the weight is not increased. be able to. The elongated footrest 96 is preferably formed in the shape of a heel that is warped upward, particularly at the front end portion 96a, in order to mitigate collisions with objects around the rail R1. Note that the footrest 95 for the right foot can be arranged along the front and rear pipes 24 in place of the illustrated position, and can be formed in a shape like a heel similarly to the footrest 96 for the left foot. .

  The embodiment of the present invention has been described above, but various modifications can be made without changing the technical idea of the present invention. For example, although the support frame 21 uses the two L-shaped pipes 23, 23, the rigidity can be further improved by using three L-shaped pipes side by side. As for the front and rear pipes 24, the shafts of the guide wheels 22 and 22 with flanges are cantilevered as one, but the shafts of the guide wheels 22 and 22 with flanges are installed on both sides with the front and rear pipes 24 being parallel to the rail. Can also be supported. Furthermore, although the support arm 31 of the auxiliary wheel mechanism 30 can be rotated forward of the bicycle 1 by the rotation connecting portion 40, the support arm 31 may be rotatable backward of the bicycle 1. Further, as to the manner of supporting the weight, not only the engagement with the attachment 35 but also the support arm 31 can be fitted and supported, or the post can be fitted and supported on the support arm 31. It is clear that it is good.

DESCRIPTION OF SYMBOLS 1 Track bicycle 2,3 Tire wheel 4 Body frame 5 Handle 6 Handle shaft 7 Saddle 8 Foot pedal 9 Drive sprocket 10 Drive sprocket 11 Chain 12 Brake lever 13 Wire harness 14 Brake 15 Body frame 16 Head tube 17 Chain stay 18 Down tube DESCRIPTION OF SYMBOLS 20 Guide wheel mechanism 21 Support frame 22 Guide wheel 23 with flange L-shaped pipe 24 Front and rear pipe 25 Attachment 26 Wheel part 27 Flange 30 Auxiliary wheel mechanism 31 Support arm 32 Auxiliary wheel 33 with flange 33 Wheel part 34 Flange 35 Attachment 40 Rotation connection part 41 Frame body 42 Bolt 43 Arm lock means 44 Engagement piece 45 Weight 46 Steering lock means 47 Handle shaft lock means 52 Auxiliary wheel 53 Wheel portion 62 Guide wheel 6 Wheel portion 67 Flange 72 Auxiliary wheel 73 Wheel portion 74 Flange 82 Guide wheel with flange 86 Wheel portion 87 Flange 87a Conical surface 92 Auxiliary wheel with flange 93 Wheel portion 94 Flange 94a Conical surface 95, 96 Footrest 96a Front end portion 97 Stay 98 Weight holder 99 Weight RW Railway track Sr Sleeper R1, R2 Rail Rt Top surface Rs Head side

Claims (12)

In a track traveling bicycle having front and rear tire wheels that can roll on one of the two rails constituting a railroad track, and a main body frame that rotatably supports the front and rear tire wheels,
A guide wheel guided along the one rail is rotatably supported on the main body frame of the bicycle in a region between the front and rear tire wheels.
An auxiliary wheel guided while rolling along the other rail is rotatably supported by the body frame of the bicycle at the tip of a support arm extending from the body frame toward the other rail. Has been
Either one or both of the guide wheel and the auxiliary wheel restrains the main body frame from moving in the left-right width direction of the rail in order to prevent the tire wheel from coming off from the one rail. An orbital bicycle characterized by being a rotating wheel with a flange. 2. The track traveling bicycle according to claim 1, wherein only the guide wheel is a rotating wheel with a flange on both sides provided with flanges capable of abutting against the head side surfaces on both sides of the one rail. The guide wheel is a rotating wheel with a flange on both sides provided with flanges capable of abutting against the head side surfaces on both sides of the one rail,
The track traveling bicycle according to claim 1, wherein the auxiliary wheel is a rotating wheel with a one-side flange including a flange capable of abutting against an inner head side surface of the other rail. The guide wheel is a rotating wheel with a flange on one side provided with a flange capable of coming into contact with the inner side surface of the one rail;
The track traveling bicycle according to claim 1, wherein the auxiliary wheel is a rotating wheel with a one-side flange including a flange capable of abutting against an inner head side surface of the other rail. 5. The track traveling bicycle according to claim 2, wherein the flange of the flanged rotating wheel has a conical surface as a surface that can contact the head side surface of the rail. The guide wheel is composed of two guide wheels that are spaced apart from the front and back of the main body frame,
The track bicycle according to any one of claims 1 to 5, wherein the auxiliary wheel is disposed corresponding to an intermediate position between the two guide wheels. The support arm is between the unfolded position extended from the main body frame toward the other rail and the closed position folded along the main body frame by the rotation connecting portion with respect to the main body frame. It is pivotally connected,
The track bicycle according to claim 1, wherein the support arm can be locked with respect to the main body frame in an unrotatable manner at the deployed position and the closed position by arm lock means. 2. The track bicycle according to claim 1, wherein the front tire wheel of the track bicycle is fixed to the main body frame so as not to be steered by a steering lock means. The main body frame includes a body frame that is originally provided in a bicycle, and a support frame that is fixed to the body frame.
The support frame includes two or more L-shaped pipes that extend downward and laterally with respect to a down tube that defines a lower side of the vehicle body frame, and one front and rear pipe fixed to the tip of the L-shaped pipe. The orbital bicycle according to claim 1, comprising: The track traveling bicycle according to claim 1, wherein a weight for preventing the auxiliary wheel from floating from the other rail can be attached to the support arm. The track bicycle according to claim 1, wherein a footrest on which a driver's feet can be placed is provided on the main body frame or the support arm. The track bicycle according to claim 1, wherein the bicycle is a children's bicycle, an assembled bicycle, or an electric assist bicycle, and the tire wheel has a diameter of 16 inches or less in inch system display. .

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