Guide rail type bogie

Abstract

To provide a guide rail type trolley that can be easily removed from the track. [Solution] The guide rail type bogie 1 comprises a bogie body 10, running wheels 20 provided on the bogie body 10 that roll while in contact with the road surface, and a pair of steering devices mounted on the bogie body 10. Each pair of steering devices is composed of a steering unit 40 including a detachable structure 41 that is detachably attached to the bogie body 10, a guide wheel 42 supported by the detachable structure 41 that rolls while in contact with a guide rail 102 provided on the track 100, and a branch wheel 43 supported by the detachable structure 41 that rolls while in contact with a branch guide plate (in this example, a movable guide plate 104 or a fixed guide plate 105) provided at a branch in the track 100.

Description

Technical Field

[0001] The present invention relates to a guide rail type bogie.

Background Art

[0002] Conventionally, a guide rail type bogie that travels on the traveling path (also simply referred to as "track") of a so-called new transportation system (a system in which a vehicle travels on a traveling path (deck slab) installed on a girder along a guide rail (also referred to as "guide rail"), which is a facility for transporting people or goods and is used for general traffic) is known. This type of guide rail bogie includes those that are integrally provided with the vehicle at the lower portion of the vehicle as a component of the vehicle that accommodates people (passengers) and cargo for general traffic (also referred to as "guide rail type vehicle bogie", "vehicle bogie", or simply "bogie"), and those that are independent of the vehicle, which are used to transport people (workers) and repair parts, or are equipped with measurement sensors to inspect the facilities of the new transportation system during time periods other than the time period for transporting people (passengers) and cargo (so-called business hours) (such as nighttime) for the purpose of maintenance and inspection of the new transportation system (also referred to as "measurement bogie").

[0003] For example, the guide rail type vehicle bogie disclosed in Patent Document 1 is provided at the lower portion of a vehicle as a component of the vehicle. The guide rail type vehicle bogie includes a bogie main body, a plurality of traveling wheels provided on the bogie main body, and a steering device attached to the bogie main body. The steering device has a plurality of guide wheels and a plurality of branching wheels arranged below each of the guide wheels. Each guide wheel rolls while in contact with a guide rail provided on the side of the track. In addition, each branching wheel rolls while in contact with a branching guide plate (for example, a fixed guide plate or a movable guide plate) provided at the branching portion of the track.

[0004] Furthermore, for example, the measuring trolley disclosed in Patent Document 2 is independent of the vehicles that accommodate people (passengers) and cargo for general traffic. This measuring trolley is connected to another powered vehicle (e.g., a vehicle) via a coupling mechanism and is towed along the track by the powered vehicle. This measuring trolley is for measuring the amount of deviation from the design position (so-called design position) of the overhead line and has various measuring sensors. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Patent No. 4125508 [Patent Document 2] Japanese Patent Publication No. 2025-28646 [Overview of the project] [Problems that the invention aims to solve]

[0006] By the way, among the guide rail type bogies, those similar to the guide rail type vehicle bogie disclosed in Patent Document 1 are attached to the underside of a vehicle, supporting the vehicle and being integrally mounted to the vehicle. They are not easy to attach or detach from the vehicle, and are quite heavy when attached integrally to the vehicle (or even on their own). In contrast, among the guide rail type bogies, those similar to the measuring bogie disclosed in Patent Document 2 are independent of the vehicle and do not support the vehicle, but they usually carry various parts, so they are also heavy and often difficult for a person to lift by hand. For this reason, if the measuring bogie in Patent Document 2 or a similar guide rail type bogie becomes immobile on the track due to a malfunction or the like, workers have to disassemble the guide rail type bogie on the track and then remove it using heavy machinery, which takes a lot of time, and in some cases necessitates a change in the aforementioned business hours after the removal work.

[0007] This invention was made to solve the above-mentioned problems and aims to provide a guide rail type trolley that can be easily removed from the track. [Means for solving the problem]

[0008] The first invention is a guide rail type bogie that runs on the road surface of a track. The guide rail type bogie comprises a bogie body, running wheels provided on the bogie body that roll in contact with the road surface, and a pair of steering devices mounted on the bogie body. Each of the pair of steering devices is composed of a steering unit that includes a detachable structure detachably mounted on the bogie body, a guide wheel supported by the detachable structure that rolls in contact with a guide rail provided on the track, and a branch wheel supported by the detachable structure that rolls in contact with a branch guide plate provided on the track.

[0009] This configuration allows for easy removal of the guide rail bogie from the track. Specifically, with this configuration, if the guide rail bogie malfunctions on the track and becomes immobile, the detachable structures for each steering unit can be removed from the bogie body, allowing each steering unit to be removed individually. This enables the guide rail bogie to be quickly disassembled into units that can be carried by a worker. Therefore, the guide rail bogie can be easily removed from the track. Furthermore, when reassembling the disassembled guide rail bogie, the detachable structures for a pair of steering units can be attached to the bogie body, allowing for quick completion of the reassembly process. It is also possible to remove the guide wheels and turnout wheels in advance when removing each steering unit from the bogie body. This allows for quick disassembly in units while avoiding interference with guide rails, turnout guides, overhead lines, etc., installed on the track.

[0010] The second invention is preferable in the first invention, where the detachable structures of the pair of steering units are configured to be detachably attached to the front end and rear end of the bogie body, respectively.

[0011] This configuration makes it even easier to remove guided rail bogies from the track. Normally, guided rail bogies have track side walls on both sides, making it difficult to secure space for removal work on either side. However, with this configuration, the detachable structures of each steering unit are detachably attached to the front and rear ends of the bogie body. This allows workers to utilize the ample space in front of and behind the guided rail bogie to remove the detachable structures from the bogie body. This improves work efficiency and allows for the rapid completion of guided rail bogie removal.

[0012] The third invention is preferable in the first or second invention, where each of the detachable structures of the pair of steering units is configured to be detachable from the bogie body at least along the longitudinal direction of the bogie.

[0013] With this configuration, workers can use the ample space in front of and behind the guided rail bogie to attach and detach the detachable structures of each steering unit. This improves work efficiency and allows for the rapid completion of the removal of the guided rail bogie.

[0014] The fourth invention is that, in any one of the first to third inventions, the guide wheel is preferably configured to be detachable from the detachable structure.

[0015] With this configuration, since the guide wheels are detachably attached to the detachable structure, when removing each steering unit from the bogie body, the guide wheels can be removed from the detachable structure beforehand, thus avoiding problems such as the guide wheels getting caught on the guide rails. This allows for smooth removal of each steering unit, and consequently, enables the removal of the guide rail type bogie to be carried out quickly.

[0016] In the fifth invention, it is preferable that in any one of the first to fourth inventions, the branching ring is configured to be detachable from the detachable structure.

[0017] With this configuration, since the branching wheels are detachably attached to the detachable structure, when removing each steering unit from the bogie body, the branching wheels can be removed from the detachable structure beforehand, thus avoiding problems such as the branching wheels getting caught on the branching guide section (for example, a fixed or movable guide plate provided at the branching point of the track). This allows for smooth removal of each steering unit, and consequently, enables the removal of the guided rail type bogie to be carried out quickly.

[0018] In the sixth invention, it is preferable that in any one of the first to fifth inventions, the detachable structure of a pair of steering units each has a wheel support portion that supports the guide wheel and the branch wheel, and the wheel support portion has a first wall portion including a pair of plate portions that support the wheel axle of the guide wheel at both ends, a second wall portion that is spaced vertically apart from the first wall portion and includes a pair of plate portions that support the wheel axle of the branch wheel at both ends, and a connecting wall portion that connects the ends of the first wall portion and the second wall portion.

[0019] This configuration allows for a space to be secured between the first wall supporting the guide wheel and the second wall supporting the branching wheel, enabling workers to reach into this space to attach and detach the guide wheel and branching wheel. Therefore, the work efficiency when removing the guide rail type bogie can be improved.

[0020] In the seventh invention, it is preferable that, in the sixth invention, the wheel support portion is configured such that the space between the first wall portion and the second wall portion is open to the outside at least in the longitudinal direction of the bogie.

[0021] With this configuration, the space between the first and second walls is opened outwards in the front-to-back direction of the bogie, rather than in the left-to-right direction of the bogie where the side walls of the track are located. As a result, workers can reach into the space and attach or detach the guide wheels and turnout wheels while maintaining a wide workspace. Therefore, the work efficiency when removing the guide rail type bogie can be improved. [Effects of the Invention]

[0022] According to the present invention, a guided track type truck that can be easily removed from the track is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] [Figure 1] Figure 1 is a plan view showing the guided track type truck according to the embodiment of the present invention. [Figure 2] Figure 2 is a view taken in the direction of arrow II in Figure 1. [Figure 3] Figure 3 is an enlarged side view showing a mounted plate provided on the mounted portion of the truck body, and is a view corresponding to the view taken in the direction of arrow III in Figure 1. [Figure 4] Figure 4 is a plan view showing a steering unit (steering device). [Figure 5] Figure 5 is a view taken in the direction of arrow V in Figure 4. [Figure 6] Figure 6 is a view taken in the direction of arrow VI in Figure 4. [Figure 7] Figure 7 is a view taken in the direction of arrow VII in Figure 6. [Figure 8] Figure 8 is a view taken in the direction of arrow VIII in Figure 6. [Figure 9] Figure 9 is an explanatory diagram for outlining the removal work of the guided track type truck. MODE FOR CARRYING OUT THE INVENTION

[0024] Hereinafter, the embodiments of the present invention will be described in detail based on the drawings.

[0025] Figure 1 is a plan view showing the guided track type truck 1 according to the embodiment of the present invention, and Figure 2 is a view taken in the direction of arrow II in Figure 1. Note that in Figure 2, a part of the structures on the truck body 10 are omitted from illustration. In the following description, unless otherwise specified, "front side" and "rear side" respectively mean the front side and the rear side in the longitudinal direction of the truck, and "left side" and "right side" respectively mean the left side and the right side in the lateral direction of the truck.

[0026] In this example, the guide rail type bogie 1 is used to measure the amount of displacement of the overhead line 101 installed along the track 100 in a new transit system (a system using rail vehicles that run on a track with rubber-tired wheels).

[0027] The guided rail type bogie 1 comprises a bogie body 10 having a measuring device 50, four running wheels 20 attached to the bogie body 10, a drive device 30 that generates driving force, and a pair of steering units 40 (steering devices). The guided rail type bogie 1 is configured to be self-propelled by the driving force generated by the drive device 30, but is not limited to this, and may be towed by other powered vehicles or pushed by human power.

[0028] The bogie body 10 is composed of a frame structure having a rectangular outer shape that is elongated in the front-to-back direction when viewed from above. The bogie body 10 is formed by welding together a plurality of metal (aluminum in this example) frame members 11. However, the bogie body 10 does not necessarily have to be a welded structure; for example, it may be a configuration in which a plurality of frame members 11 are connected by fastening members such as bolts.

[0029] The bogie body 10 has a pair of mounting sections 12 to which a pair of steering units 40 can be attached. The pair of mounting sections 12 are provided at the front end and rear end of the bogie body 10, respectively. Each mounting section 12 has a pair of mounting plates 121 fixed to both the left and right end faces of the bogie body 10, respectively. The pair of mounting plates 121 consist of vertical plates extending in the front-rear and up-down directions, and both have the same shape.

[0030] Figure 3 is a magnified side view of the mounting plate 121 (corresponding to the view taken by arrow III in Figure 1). As an example, Figure 3 shows the mounting plate 121 fixed to the right end face of the front end of the bogie body 10. The mounting plate 121 is formed in a rectangular shape when viewed from the left and right directions. The mounting plate 121 has four mounting holes 121a located at its four corners and one circular hole 121b located in the center. The circular hole 121b is provided, for example, for the purpose of weight reduction, but may also be used as a hole for passing wiring through. The four mounting holes 121a are used as bolt insertion holes for fixing the detachable structure 41 of each steering unit 40 to the mounting plate 121, as will be described later.

[0031] Returning to Figure 1, the bogie body 10 has a pair of handles 13 on the left and right sides at its front and rear ends, respectively. Each handle 13 is formed in a U-shape and protrudes outward in the front-rear direction from the end face of the bogie body 10.

[0032] The top surface of the bogie body 10 is provided with a first operator's seat 2, a second operator's seat 3, and the measuring device 50. The first operator's seat 2 is located on the rear left side of the bogie body 10 and is configured so that the operator can sit facing forward of the bogie. The second operator's seat 3 is located on the front left side of the bogie body 10 and is configured so that the operator can sit facing backward of the bogie. Operating members such as acceleration / deceleration levers and brake levers are provided on the sides of each operator's seat 2 and 3. The operator sits in the first operator's seat 2 when moving forward and in the second operator's seat 3 when moving backward, so that the operator can always operate the operating members while facing forward in the direction of travel of the guide rail type bogie 1.

[0033] The measuring device 50 is positioned in the center of the upper surface of the bogie body 10 in the front-rear direction. The measuring device 50 includes a sensor support member 51 attached to the left end of the bogie body 10 and three positional displacement measuring sensors 52 (see Figure 2) attached to the sensor support member 51. Each of the three positional displacement measuring sensors 52 is a sensor for measuring the amount of positional displacement of three overhead lines 101 that extend along one side wall 101b of the track 100, and is composed of, for example, distance sensors. The three overhead lines 101 are arranged with vertical spacing along one side wall 101b of the track 100. Each of the three positional displacement measuring sensors 52 is positioned at a height corresponding to the installation position of the three overhead lines 101. The measurement information from the positional displacement measuring sensors 52 is transmitted to a controller (not shown) and stored as positional displacement data.

[0034] The four running wheels 20 are supported at both ends of a pair of front and rear axles 21 supported on the underside of the bogie body 10. Each running wheel 20 rotates while in contact with the running surface 100a. Each running wheel 20 consists of a double tire, which is made up of two tires arranged coaxially. However, each running wheel 20 is not limited to a double tire; for example, it may be a single tire.

[0035] The drive unit 30 has an electric motor 31 that generates the driving force for the guide rail type bogie 1. The electric motor 31 is mounted in the center of the bogie body 10. The electric motor 31 receives power from a portable battery (not shown) mounted on the bogie body 10 to generate the driving force and transmits the generated driving force to each of the running wheels 20. The drive unit 30 may be configured to transmit the driving force to only the front wheels or only the rear wheels of the four running wheels 20.

[0036] The pair of steering units 40 consists of a front steering unit 40F mounted on the front end of the bogie body 10 and a rear steering unit 40R mounted on the rear end of the bogie body 10.

[0037] Figure 4 is a plan view showing the front steering unit 40F, Figure 5 is a view in the direction of arrow V in Figure 4, and Figure 6 is a view in the direction of arrow VI in Figure 4. The front steering unit 40F and the rear steering unit 40R have similar configurations, and in the following description, reference numeral 40 will be used unless there is a need to distinguish between the two.

[0038] Each steering unit 40 includes a detachable structure 41 that is detachably configured to be attached to the bogie body 10, a pair of left and right guide wheels 42 supported at both ends of the detachable structure 41, and a pair of left and right branching wheels 43 located below each of the guide wheels 42 and supported by the detachable structure 41. The detachable structure 41, the pair of guide wheels 42, and the pair of branching wheels 43 are unitized.

[0039] The guided rail type bogie 1 has four guide wheels 42 and four branching wheels 43 as a whole. Each of the four guide wheels 42 is supported so as to be rotatable about a vertical axis relative to a detachable structure 41. The four guide wheels 42 guide the direction of travel of the guided rail type bogie 1 in the direction of travel along the track 100 by contacting the guide rails 102 provided along both side walls of the track 100. While the guided rail type bogie 1 is in motion, the two left guide wheels 42 roll while in contact with the guide surface 102a of the left guide rail 102L, and the two right guide wheels 42 roll while in contact with the guide surface 102a of the right guide rail 102R.

[0040] Each of the four branching wheels 43 is supported so as to be rotatable about a vertical axis relative to the detachable structure 41. The four branching wheels 43 are arranged non-coaxially with respect to each guide wheel 42 located above them, but are not limited to this arrangement and may be arranged coaxially. When the guided rail trolley 1 travels through a branch in the track 100, the four branching wheels 43 roll in contact with a movable guide plate 104 or a fixed guide plate 105 (see dashed line in Figure 2) provided at the branch in the track 100, thereby steering the direction of travel of the guided rail trolley 1. The fixed guide plate 105 is located ahead of the movable guide plate 104 in the direction of travel of the trolley and engages with the branching wheel 43 after passing the movable guide plate 104. The movable guide plate 104 and the fixed guide plate 105 function as branching guide plates used to switch the direction of travel of the guided rail trolley 1 at the branch.

[0041] Furthermore, various drive methods can be employed for the movable guide plate 104, including a lifting type that moves up and down, a sliding type that slides horizontally, and a swinging type that swings horizontally with its end as a pivot point. For example, if a sliding type is adopted, the left and right movable guide plates 104 can be driven horizontally (for example, left and right) by a switch, and the orientation of the guide rail type bogie 1 is changed by switching between a state in which the two left branching wheels 43 engage with the left movable guide plate 104 and a state in which the two right branching wheels 43 engage with the right movable guide plate 104.

[0042] In this example, the detachable structure 41 is constructed by welding together, for example, aluminum. The detachable structure 41 includes a first frame member 411, a pair of left and right second frame members 412, a pair of left and right third frame members 413, a pair of left and right bracket members 414, and a pair of left and right wheel support parts 415. Each of the frame members 411 to 413 is made of a hollow pipe member with a rectangular cross-section.

[0043] The first frame member 411 is positioned at a distance from the front-rear ends of the bogie body 10. The first frame member 411 extends horizontally in the left-right direction. The left-right ends of the first frame member 411 are located further out than the left-right ends of the bogie body 10.

[0044] Each of the pair of second frame members 412 extends from both the left and right ends of the first frame member 411, inclined inward in the left-right direction and inward in the front-rear direction of the bogie (rear side in the example of Figure 4). The pair of second frame members 412 are located at the same height as the first frame member 411.

[0045] A pair of third frame members 413 extend outward from the front ends of a pair of second frame members 412 in the longitudinal direction of the bogie and are connected to a first frame member 411. Each of the pair of third frame members 413 is connected to the lower surface of the pair of second frame members 412 and the lower surface of the first frame member 411. Each end face of the pair of third frame members 413 and the side surface of the first frame member 411 are connected by a reinforcing plate 416.

[0046] A pair of bracket members 414 are connected to the bogie body 10. Each of the bracket members 414 is made of an angle member with an L-shaped cross-section. Specifically, each of the bracket members 414 has a rectangular horizontal plate portion 414a extending in the front-rear direction and a rectangular vertical plate portion 414b connected to the edge of the horizontal plate portion 414a. The vertical plate portion 414b is fixed to the inner surface in the left-right direction of the third frame member 413. The horizontal plate portion 414a is fixed to the upper surface of the second frame member 412.

[0047] When attaching the detachable structure 41 to the bogie body 10, the vertical plate portions 414b of the pair of bracket members 414 engage with the pair of mounting plates 121 (see Figure 3) provided on the bogie body 10 from the outside, overlapping them. This positions the detachable structure 41 in the left-right direction relative to the bogie body 10.

[0048] Here, as shown in Figure 6, the vertical plate portion 414b of each bracket member 414 has four mounting holes 414c located at its four corners and one circular hole 414d located in the center. The circular hole 414d is, for example, intended to reduce weight, but may also be used as a hole for passing wiring through. Bolts 417 for fixing the detachable structure 41 to the bogie body 10 are inserted through the four mounting holes 414c. It is preferable that at least one of the four bolts 417 inserted through the four mounting holes 414c is a positioning bolt. The positioning bolt has a cylindrical positioning cylinder portion, a head connected to the base end of the positioning cylinder portion, and a threaded portion (none of which are shown) connected to the tip of the positioning cylinder portion. This positioning cylinder portion penetrates each of the mounting holes 414c of the vertical plate portion 414b and each of the mounting holes 121a (see Figure 3) of the mounting plate 121 of the bogie body 10. This allows the detachable structure 41 to be positioned in the front-to-back and up-to-down directions relative to the bogie body 10.

[0049] Each of the pair of wheel support sections 415 supports the guide wheel 42 and the branch wheel 43, respectively. The pair of wheel support sections 415 are provided at both the left and right ends of the first frame member 411.

[0050] As shown in Figure 6, each wheel support portion 415 has an upper wall portion 430 that supports the guide wheel 42, a lower wall portion 440 that supports the branch wheel 43, a connecting wall portion 450 that connects the ends of the upper wall portion 430 and the lower wall portion 440, an upper support pin 460 attached to the upper wall portion 430, and a lower support pin 470 attached to the lower wall portion 440. Between the upper wall portion 430 and the lower wall portion 440, a space S is formed that opens to the side opposite to the connecting wall portion 450 when viewed from the left and right directions.

[0051] The connecting wall section 450 has the left-right end 411A of the first frame member 411 and a pair of frame members 418 extending downward from the lower surface of the left-right end 411A of the first frame member 411. Each of the pair of frame members 418 is made of a flat frame member having half the thickness of the first frame member 411 and is arranged in parallel in contact with each other. The boundary between the pair of frame members 418 and the lower surface of the first frame member 411 are connected by a trapezoidal plate-shaped reinforcing rib 419 (see Figure 5). Alternatively, a single frame member having the same width as the first frame member 411 may be used instead of the pair of frame members 418.

[0052] The connecting wall portion 450 has an outer surface 450a facing outward in the longitudinal direction of the bogie. This outer surface 450a is formed by the side surface of one of the frame members 418. The second sheet metal 432 and the third sheet metal 441, which will be described later, are connected to the outer surface 450a of the connecting wall portion 450.

[0053] The upper wall portion 430 has a first sheet metal 431 and a second sheet metal 432 that are spaced apart in the vertical direction. The guide wheel 42 is positioned between the first sheet metal 431 and the second sheet metal 432. The guide wheel 42 is made up of a wheel with an integrated bearing. That is, a bearing 42a is pre-press-fitted and fixed to the center of the guide wheel 42. The guide wheel 42 is positioned between the first sheet metal 431 and the second sheet metal 432 with the axis of the bearing 42a facing vertically. The guide wheel 42 is rotatably supported by an upper support pin 460 that is inserted into the bearing 42a.

[0054] The first sheet metal 431 is fixed across the upper surface of the second frame member 412 and the upper surface of the first frame member 411. The first sheet metal 431 protrudes horizontally outward in the longitudinal direction of the bogie (towards the front in Figure 6) compared to the first frame member 411. An insertion hole 431a is formed at the protruding end of the first sheet metal 431 through which the upper support pin 460 is inserted.

[0055] The second sheet metal 432 protrudes horizontally outward in the longitudinal direction of the bogie from the outer surface 450a of the connecting wall portion 450. An insertion hole 432a is formed at the protruding end of the second sheet metal 432 through which the upper support pin 460 is inserted.

[0056] The upper support pin 460 is inserted through the insertion hole 431a of the first sheet metal 431 and the insertion hole 432a of the second sheet metal 432. The upper support pin 460 has a pin body portion 461, a head portion 462 connected to the base end of the pin body portion 461, and a locking hole 463 formed at the tip of the pin body portion 461.

[0057] The head portion 462 abuts against the upper surface of the first sheet metal 431 and functions as a retaining portion to prevent the upper support pin 460 from coming out downward. A rotation-preventing member 480 for the upper support pin 460 is provided on the side of the head portion 462. Figure 7 is a schematic view of the rotation-preventing member 480 and the head portion 462 as seen from the axial direction (view of arrow VII in Figure 6). As shown in this figure, the head portion 462 has a straight, planar side surface 462a formed by cutting a part of it in a D shape. The rotation-preventing member 480 consists of a rectangular parallelepiped block member that abuts against this side surface 462a. The rotation-preventing member 480 is fixed to the upper surface of the first sheet metal 431 by two bolts 481.

[0058] The retaining hole 463 of the upper support pin 460 is formed to penetrate radially through the pin body 461 at a position below the second sheet metal 432. Figure 8 is a schematic view of the pin body 461 from below (viewed from the VIII direction arrow in Figure 6). As shown in this figure, the R pin 464 is retained (inserted) into the retaining hole 463. The R pin 464 functions as a retaining part that prevents the upper support pin 460 from coming out upward.

[0059] The lower wall portion 440 has a third sheet metal 441 and a fourth sheet metal 442 that are spaced apart in the vertical direction. The branching wheel 43 is positioned between the third sheet metal 441 and the fourth sheet metal 442. The branching wheel 43 is made up of a wheel with an integrated bearing. That is, a bearing 43a is pre-press-fitted and fixed to the center of the branching wheel 43. The branching wheel 43 is positioned between the third sheet metal 441 and the fourth sheet metal 442 with the axis of the bearing 43a facing vertically. The branching wheel 43 is rotatably supported by a lower support pin 470 that is inserted into the bearing 43a.

[0060] The third sheet metal 441 protrudes horizontally outward in the longitudinal direction of the bogie from the outer surface 450a of the connecting wall portion 450. An insertion hole 441a is formed at the protruding end of the third sheet metal 441 through which the lower support pin 470 is inserted.

[0061] The fourth sheet metal 442 is fixed to the lower end surface of the connecting wall 450. The fourth sheet metal 442 protrudes horizontally outward in the longitudinal direction of the bogie (towards the front in Figure 6) from the connecting wall 450. An insertion hole 442a is formed at the protruding end of the fourth sheet metal 442 through which the lower support pin 470 is inserted.

[0062] The lower support pin 470 is inserted through the insertion hole 441a of the third sheet metal 441 and the insertion hole 442a of the fourth sheet metal 442. The lower support pin 470 has a pin body portion 471, a head portion 472 connected to the base end of the pin body portion 471, and a locking hole 473 formed at the tip of the pin body portion 471.

[0063] The head portion 472 abuts against the upper surface of the third sheet metal 441 and functions as a retaining portion to prevent the lower support pin 470 from coming out downward. The head portion 472 has a straight, planar side surface, similar to the upper support pin 460, and the anti-rotation member 490 abuts against this side surface. This anti-rotation member 490 is fixed to the upper surface of the third sheet metal 441 by a bolt (not shown). The configuration of the anti-rotation member 490 is the same as that of the anti-rotation member 480 of the upper support pin 460 described above, so a detailed explanation is omitted. In addition, the R pin 474 is hooked (inserted) into the hooking hole 473, similar to that of the upper support pin 460 described above.

[0064] The space S between the upper wall portion 430 and the lower wall portion 440 is open in all directions except the side where the connecting wall portion 450 is located. Here, it is preferable that the space S is open at least to the outside in the longitudinal direction of the bogie, more preferably to the outside in the left-right direction of the bogie, and even more preferably, as in this example, to be open in all directions except the side where the connecting wall portion 450 is located.

[0065] Figure 9 is an explanatory diagram illustrating the general procedure for removing the guide rail type bogie 1. During the removal work, the worker performs the work from the front or rear of the bogie body 10 to easily secure working space. The worker then removes a pair of steering units 40 from the bogie body 10 in unit units. Specifically, the worker removes the fixing bolts 417 (see Figure 6) of the pair of steering units 40, releases the fastening between the pair of vertical plate sections 414b of each steering unit 40 and the pair of mounting plates 121 of the bogie body 10, and then pulls the pair of steering units 40 outwards in the front-rear direction of the bogie (see white arrows in Figure 9) to remove them. At this time, the pair of vertical plate sections 414b of each steering unit 40 are guided at least along the front-rear direction by the pair of mounting plates 121. This allows each steering unit 40 to be removed in a stable position without hitting the left or right side walls 101b. In this example, the pair of vertical plate sections 414b of each steering unit 40 are guided not only in the front-to-back direction but also in the up-and-down direction by the pair of mounting plates 121.

[0066] In Figure 9, the removal of each steering unit 40 is performed with the guide wheels 42 and branch wheels 43 attached to each steering unit 40, respectively. However, the procedure is not limited to this, and the removal of each steering unit 40 may be performed after the guide wheels 42 and branch wheels 43 have been removed. When removing the guide wheel 42, as shown in Figure 6, the worker should reach their hand into the space S between the upper wall portion 430 and the lower wall portion 440 of the attachment / detachment structure 41 from the outside in the longitudinal direction of the bogie, remove the R pin 464 that prevents the upper support pin 460 from coming loose, and then pull the upper support pin 460 above the first sheet metal 431 to remove the guide wheel 42 to the outside in the longitudinal direction of the bogie. Furthermore, when removing the branching wheel 43, the worker should first remove the R-pin 474 that prevents the lower support pin 470 from coming loose, then pull the lower support pin 470 above the third sheet metal 441, and then pull the branching wheel 43 outwards in the front-rear direction of the bogie.

[0067] [summary] As described above, in this embodiment, each pair of steering devices is composed of a steering unit 40 which includes a detachable structure 41 that is detachably attached to the bogie body 10, a guide wheel 42 that is supported by the detachable structure 41 and rolls in contact with a guide rail 102 provided on the track 100, and a branching wheel 43 that rolls in contact with a branching guide plate (in this example, a movable guide plate 104 or a fixed guide plate 105) provided at a branching point of the track 100.

[0068] This configuration allows the guided rail trolley 1 to be easily removed from the track 100. Specifically, with this configuration, if the guided rail trolley 1 malfunctions and becomes unable to move on the track 100, the detachable structures 41 of each steering unit 40 can be removed from the trolley body 10, allowing each steering unit 40 to be removed as a unit. This allows the guided rail trolley 1 to be quickly disassembled into units that can be carried by a worker (person). Therefore, the guided rail trolley 1 can be easily removed from the track 100. Furthermore, when reassembling the disassembled guided rail trolley 1, the reassembly work can be quickly completed by attaching the detachable structures 41 of the pair of steering units 40 to the trolley body 10.

[0069] Furthermore, in this embodiment, the detachable structure 41 of each steering unit 40 is configured to be detachably attached to the front end and rear end of the bogie body 10, respectively.

[0070] This configuration makes it even easier to remove the guide rail trolley 1 from the track 100. Normally, the side walls 101b of the track 100 are provided on both the left and right sides of the guide rail trolley 1, making it difficult to secure space for removal work on both sides. However, with the above configuration, the detachable structures 41 of each steering unit 40 are detachably attached to the front and rear ends of the trolley body 10. Therefore, workers can use the wide space in front of and behind the guide rail trolley 1 to remove each detachable structure 41 from the trolley body 10. This improves work efficiency and allows for the rapid completion of the removal of the guide rail trolley 1.

[0071] Furthermore, in this embodiment, each steering unit 40's detachable structure 41 is configured to be detachable from the bogie body 10 at least along the longitudinal direction of the bogie.

[0072] With this configuration, workers can use the wide space in front of and behind the guide rail trolley 1 to attach and detach the attachment and detachment structures 41 of each steering unit 40. This improves work efficiency and allows for the rapid completion of the removal of the guide rail trolley 1.

[0073] Furthermore, in this embodiment, the guide wheel 42 is configured to be detachable from the detachable structure 41.

[0074] According to this, when workers remove each steering unit 40, they can avoid problems such as the guide wheels 42 getting caught on the guide rails 102 by removing the guide wheels 42 from the detachable structure 41 in advance. This allows for the removal of each steering unit 40 to be carried out smoothly. Consequently, the removal of the guide rail type bogie 1 can be carried out quickly.

[0075] Furthermore, in this embodiment, the branching ring 43 is configured to be detachable from the detachable structure 41.

[0076] According to this, when workers remove each steering unit 40, they can avoid problems such as the branching wheel 43 getting caught on the branching guide section (in this example, a fixed guide plate 105 or a movable guide plate 104 provided at the branching section of the track 100) by removing the branching wheel 43 from the detachable structure 41 in advance. This allows for the removal of each steering unit 40 to be carried out smoothly. Consequently, the removal of the guide rail type bogie 1 can be carried out quickly.

[0077] Furthermore, in this embodiment, each steering unit 40's detachable structure 41 has a wheel support portion 415 that supports the guide wheel 42 and the branch wheel 43. The wheel support portion 415 has an upper wall portion 430 (first wall portion), a lower wall portion 440 (second wall portion) arranged vertically apart from the upper wall portion 430, and a connecting wall portion 450 that connects the ends of the upper wall portion 430 and the lower wall portion 440. The upper wall portion 430 includes a first sheet metal 431 and a second sheet metal 432 (a pair of plate portions) that support the upper support pin 460, which is the wheel axle of the guide wheel 42, at both ends. The lower wall portion 440 includes a third sheet metal 441 and a fourth sheet metal 442 (a pair of plate portions) that support the lower support pin 470, which is the wheel axle of the branch wheel 43, at both ends. The vertical distance between the upper wall portion 430 (first wall portion) and the upper wall portion 430 is set to the distance necessary for the worker to insert their hand into the space S and attach or detach the guide wheel 42 and the branch wheel 43.

[0078] With this configuration, a space S can be secured between the upper wall portion 430 that supports the guide wheel 42 and the lower wall portion 440 that supports the branching wheel 43, allowing the worker to reach into this space S to attach and detach the guide wheel 42 and the branching wheel 43. Therefore, the work efficiency when removing the guide rail type bogie 1 can be improved.

[0079] Furthermore, in this embodiment, the wheel support portion 415 is configured such that the space S between the upper wall portion 430 and the lower wall portion 440 is open to the outside at least in the longitudinal direction of the bogie when viewed from above.

[0080] With this configuration, the space S between the upper wall portion 430 and the lower wall portion 440 is opened outwards in the front-to-back direction of the bogie, rather than in the left-to-right direction of the bogie where the side walls 101b of the track 100 are located. As a result, workers can reach into the space S while securing a wide workspace to attach and detach the guide wheels 42 and the turnout wheels 43. Therefore, the work efficiency when removing the guide rail type bogie 1 can be improved.

[0081] (Other embodiments) The guide rail type trolley 1 according to an embodiment of the present invention has been described above, but the present invention is not limited thereto.

[0082] (1) In the above embodiment, the guide rail type bogie 1 is used to measure the amount of displacement of the overhead line 101 installed in the new transit system, but is not limited to this. That is, the guide rail type bogie 1 may be used for purposes such as measuring the building clearance or road surface, or for purposes such as visual inspection or maintenance.

[0083] (2) In the above embodiment, the pair of steering units 40 are spaced apart in the front-rear direction of the bogie body 10, but are not limited to this, and may be spaced apart in the left-right direction, for example. In this case, the left steering unit has two guide wheels 42 on the left side and two branch wheels 43 on the left side, and the right steering unit has two guide wheels 42 on the right side and two branch wheels 43 on the right side.

[0084] (3) In the above embodiment, an example was described in which two guide rails 102 are arranged on both sides of the track 100, but the invention is not limited to this, and one guide rail may be arranged on only one side of the track 100, or one guide rail may be arranged in the center of the track.

[0085] (4) In the above embodiment, the guide rail type bogie 1 is configured to have four guide wheels 42 and four branching wheels 43, but is not limited thereto. The number of guide wheels 42 may be increased or decreased depending on the arrangement of the guide rails, for example, there may be three or fewer, or five or more. Similarly, the number of branching wheels 43 may be three or fewer, or five or more.

[0086] (5) In the above embodiment, the guide rail type bogie 1 has four running wheels 20, but is not limited thereto. The number of running wheels 20 may be three or less, or five or more.

[0087] (6) In the above embodiment, the guide rail type trolley 1 is driven by a motor, but it is not limited to this. Bars may be provided at the front and rear of the guide rail type trolley 1, and the trolley may be driven by workers pushing these bars by hand.

[0088] (7) In the above embodiment, the guided rail type bogie 1 is configured independently of the vehicle that transports people (passengers) and cargo, and the present invention is particularly useful for such a guided rail type bogie 1, but is not limited thereto. That is, the present invention is also applicable to a component of a vehicle that accommodates people (passengers) and cargo for general traffic, which is provided integrally with the vehicle at the bottom of the vehicle (also called a "guided rail type vehicle bogie," "vehicle bogie," or simply a "bogie"). [Explanation of Symbols]

[0089] S: Space 1: Guide rail type bogie 10: Trolley body 20: Driving wheels 40: Steering unit (steering device) 40F: Front steering unit (steering device) 40R: Rear steering unit (steering device) 41: Detachable structure 42: Guide Wheel 43: Branching ring 100: Orbit 102: Guide rail 102L: Guide rail 102R: Guide rail 104: Movable information board (branching information board) 105: Fixed sign (junction sign) 415:Wheel support part 441: Third sheet metal (sheet metal part) 442: 4th Sheet Metal (Sheet Metal Section) 450: Connecting wall section 460: Upper support pin (wheel axle of guide wheel) 470: Lower support pin (wheel axle of branch wheel)

Claims

1. A guide rail type bogie that runs on the surface of a track, The trolley body and The trolley body is provided with running wheels that roll while in contact with the road surface, The trolley body is equipped with a pair of steering devices, A guide rail type bogie, wherein each of the pair of steering devices comprises a steering unit including a detachable structure detachably mounted on the bogie body, a guide wheel supported by the detachable structure and rolling in contact with a guide rail provided on the track, and a branch wheel supported by the detachable structure and rolling in contact with a branch guide plate provided on the track.

2. In the guide rail type bogie according to claim 1, A guide rail type bogie in which the detachable structures of a pair of steering units are configured to be detachably attached to the front end and rear end of the bogie body, respectively.

3. In the guide rail type bogie according to claim 1 or 2, A guide rail type bogie in which the detachable structures of a pair of steering units are each configured to be detachably attached to the bogie body at least along the longitudinal direction of the bogie.

4. In the guide rail type bogie according to claim 1 or 2, The guide wheels are configured to be detachably attached to the detachable structure, in a guide rail type bogie.

5. In the guide rail type bogie according to claim 1 or 2, The aforementioned branching wheel is configured to be detachably attached to the aforementioned detachable structure, and is a guide rail type bogie.

6. In the guide rail type bogie according to claim 1 or 2, Each of the detachable structures of the pair of steering units has a wheel support portion that supports the guide wheel and the branching wheel, The wheel support portion is, The first wall portion includes a pair of plate portions that support the wheel axle of the guide wheel at both ends, A second wall portion is positioned vertically apart from the first wall portion and includes a pair of plate portions that support the wheel axle of the branching wheel at both ends, A guide rail type bogie having a connecting wall portion that connects the ends of the first wall portion and the second wall portion.

7. In the guide rail type bogie according to claim 6, The wheel support portion is configured such that the space between the first wall and the second wall is open to the outside at least in the longitudinal direction of the bogie, in a guide rail type bogie.

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