JP2006321445A - Truck structure of rail system vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a truck structure of a rail system vehicle traveling on a predetermined rail by automatic steering based on steering information from a control means, which can achieve the simplification of a structure and weight reduction, which makes high-speed operation possible, and which improves maintainability and assemblability. <P>SOLUTION: The truck structure of the rail system vehicle is provided with a dolly frame 28 and an actuator mechanism 60. The dolly frame 28 to which an axle shaft 22 is fixed constitutes the frame of the truck, and a steering force is acted on the steering mechanism 50 of the vehicle by the actuator mechanism 60. The part constituting the actuator mechanism 60 is integrally attached to another actuator frame 62 different from the dolly frame 28, thus an actuator unit 72 is formed. Then the actuator unit 72 is attached to the dolly frame 28. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bogie structure for a track-type vehicle that is automatically steered on, for example, rubber tire-type running wheels on a predetermined track.

  Unlike a railway vehicle that travels on rails, a vehicle with a new transportation system that travels by supporting the vehicle body with rubber tires and rotating it usually turns the rubber tires that are traveling wheels along a predetermined track. In order to achieve this, a steering guide wheel is provided, and the vehicle is mechanically steered and traveled by the guide wheel coming into contact with the guide track provided along the track.

  For example, in Patent Document 1 (Japanese Patent Laid-Open No. 59-11955) and Patent Document 2 (Japanese Patent Laid-Open No. 9-315297), there is a carriage structure in which guide wheels are attached to the tips of guide beams protruding on both sides of a vehicle. It is disclosed. According to this carriage structure, when the vehicle is running, the guide wheel comes into contact with the guide track and moves the guide beam to the left and right of the vehicle, and the wheels are steered in the left and right direction in conjunction with the movement of the guide beam. It has become.

  However, in such a steering system as shown in Patent Document 1 and Patent Document 2, a guide beam extending in the left-right direction of the vehicle and an arm member that supports the guide beam are required, which increases the weight and increases the size. there were. Furthermore, it is necessary to install a guide track having sufficient strength with respect to the acting force received through the guide wheel with high accuracy over the entire track, and the construction cost of the track is high. In addition, since the vehicle guide wheels contact the guide track with impacts intermittently or continuously during traveling, there is a problem that the wear of the vehicle is severely worn and requires periodic replacement, which requires maintenance costs. Furthermore, the contact between the guide wheels and the guide track generates vibrations and noises, and there is a problem in terms of the riding comfort of the vehicle and the environment around the track.

  To solve this problem, a vehicle that automatically steers along a track based on predetermined steering information has been proposed as disclosed in Patent Document 3 (Japanese Patent Laid-Open No. 2002-351544). .

The steering device shown in FIG. 2 of Patent Document 3 will be described with reference to FIG. This indicates one axle.
The steering device 010 has a configuration in which an actuator 020 is arranged instead of a guide beam provided at both ends with guide wheels as shown in Patent Documents 1 and 2, and one end of the steering device 010 is pin 030. An electric, hydraulic, or pneumatic actuator 020 is connected to the tip of an arm 040 that is rotatably attached by the above. Further, it includes a connecting rod 050, steering arms 070a and 070b for the left and right rubber tires 060a and 060b, and a tie rod 080 connecting them. Then, according to the steering information from the control device, the actuator 020 is actuated to rotate the arm 040 around the pin 030, and by the movement, the left and right rubber tires are connected via the connecting rod 050, the steering arms 070a and 070b, and the tie rod 080. 060a and 060b are turned left and right.

JP 59-11955 A JP-A-9-315297 JP 2002-351544 A

However, it is unclear what the structure of the actuator 020 shown in Patent Document 3 is, and what is the frame structure that constitutes the carriage, and the actuator 020 is attached to the frame. It was unclear how and where it was installed.
The structure of the carriage, which is simple in structure and can achieve weight reduction, is an important element for improving the workability of the assembly work of the vehicle, further transporting the vehicle at a high speed, and reducing the cost. During regular inspections, it was necessary to have a structure that facilitated repair and replacement of parts.

  Therefore, the present invention has been made in view of such a background, and in the bogie structure of a track-type vehicle that travels by automatically steering on a predetermined track based on steering information from a control means, It is an object of the present invention to provide a cart structure that can achieve simplification and light weight, enables high-speed operation, and improves maintenance and assembly.

In order to solve the above-mentioned problem, the bogie structure for a track-type vehicle according to claim 1 is a bogie structure for a track-type vehicle that automatically runs on a predetermined track based on steering information from a control means. ,
A bogie frame having a fixed axle and constituting a skeleton of the bogie, an actuator mechanism for applying a steering force of automatic steering to the steering mechanism of the vehicle, and an actuator frame in which the components making up the actuator mechanism are different from the bogie frame And an actuator unit formed integrally with the actuator unit, and the actuator unit is attached to the carriage frame.

According to the first aspect of the present invention, the parts constituting the actuator mechanism are integrally assembled to an actuator frame different from the carriage frame to form an actuator unit. Therefore, during maintenance such as periodic inspection and parts replacement Since the work can be performed in units of actuator units, it is possible to improve maintainability and workability for assembling the carriage.
In addition, it is only necessary to attach a unitized actuator unit to the existing bogie frame, so the structure is simplified and the bogie can be reduced in weight, and the existing bogie can be added to the existing bogie without major modifications. It can be attached, so that parts can be shared and costs can be reduced.

  The invention according to claim 2 is the truck structure of the track system vehicle according to claim 1, wherein the actuator unit includes an electric motor, a connection / disconnection clutch, a screw feed mechanism, and a feed amount limit mechanism integrally. It is characterized by being assembled.

  According to the second aspect of the present invention, the actuator unit can assemble the electric motor, the connection / disconnection clutch, the screw feed mechanism, and the feed amount limit mechanism integrally with the actuator unit separately from the carriage frame. During maintenance such as periodic inspections and replacement of parts, the actuator unit can be removed and the unit unit can be operated, so that maintainability is improved. Also, during assembly work, since necessary parts can be assembled in advance to the actuator unit and then assembled to the carriage frame, the assembly workability is also improved.

  The invention according to claim 3 is the bogie structure of the track system vehicle according to claim 1, wherein the actuator unit is composed of a subunit of a motor subunit and a screw feed mechanism subunit. And

According to the third aspect of the present invention, the actuator unit is composed of the subunits of the motor subunit and the screw feed mechanism subunit. Since it is possible to work by removing only the subunit to which the parts are assembled, workability such as maintenance can be further improved.
Also in the assembling work, by assembling the subunits and then forming the actuator unit, the assembling work and the necessary adjustment work can be performed in units of the subunits, so that these workability can be further improved.

  The invention according to claim 4 is the bogie structure of the track system vehicle according to claim 1, and when an abnormality occurs in the steering system, a protection wheel is brought into contact with the protection track provided on the track. A protective wheel unit comprising a fail-safe mechanism for steering the steering mechanism, and parts on the vehicle body side constituting the fail-safe mechanism are integrally assembled with a protective wheel frame provided separately from the cart frame and the actuator frame. And the guard wheel unit is attached to the axle or the carriage frame.

  According to the fourth aspect of the present invention, the fail-safe mechanism that operates when an abnormality occurs in the steering system is integrally assembled with the protective wheel frame that is provided separately from the carriage frame and the actuator frame. Configured as a unit. For this reason, even a trolley equipped with a fail-safe mechanism has a simplified structure and can be lightened, and can be attached to an existing trolley without significant modifications. It is possible to share parts and reduce costs.

  According to the present invention, the present invention has been made in view of such a background, and a bogie structure for a track-type vehicle that automatically runs on a predetermined track based on steering information from a control unit. Therefore, it is possible to provide a cart structure that can achieve simplification and weight reduction of the structure, enables high-speed operation, and improves maintenance and assembly.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified, but are merely illustrative examples. Not too much.

In the drawings to be referred to, FIG. 1 is a plan view showing a first embodiment of a bogie structure for a track system vehicle according to the present invention, FIG. 2 is a side view of the first embodiment, and FIG. 3 is a first embodiment. FIG. FIG. 4 is an explanatory diagram of the actuator unit according to the first embodiment. FIG. 5 is an explanatory diagram of the protective wheel unit of the first embodiment. FIG. 6 is a plan view showing a second embodiment of a truck structure for a track vehicle according to the present invention, FIG. 7 is a side view of the second embodiment, and FIG. 8 is a front view of the second embodiment. . FIG. 9 is an explanatory diagram of an actuator unit according to the second embodiment.
In the description of the embodiment, the left-right direction indicates a direction when the vehicle traveling direction is viewed from the inside of the vehicle.

<First Embodiment>
A first embodiment of the present invention is shown in FIGS. The vehicle 10 used in the track system transportation system has four wheels per vehicle and travels along the track 12. A protective track 14 having a U-shaped cross section is provided in a substantially central portion of the track 12 in a groove shape with respect to the road surface 16. The U-shaped protective track 14 is formed by laying U-shaped steel.
The cart structure 18 shown in FIG. 1 to FIG. 3 is disposed in the front and rear portions of the vehicle 10, and includes front and rear wheels 20a and 20b of rubber tires on the left and right. Since the vehicle structure on the vehicle front wheel side and the vehicle rear wheel side have the same structure, the vehicle structure 18 arranged in the front portion of the vehicle will be described here.

As shown in FIG. 1, left and right front wheels 20a and 20b are respectively supported by king pins 24 at both ends of an axle 22 extending in the left-right direction of the vehicle so as to be horizontally swingable. The axles 22 are integrally fixed to the lower surface portions of the left and right side cart frames 26a and 26b extending in the vehicle front-rear direction by bolts.
The carriage frame 28 includes a left side carriage frame 26a and a center carriage frame 30 that connects the front end portions of the right side carriage frame 26b. As shown by a chain line in FIG. 2, two air springs 32 are provided on the upper surfaces of the left and right side bogie frames 26a and 26b as suspension springs to support the suspension frame 34 of the vehicle 10 in a vibration-proof manner. is doing.

As the drive device, as shown by a chain line in FIG. 2, the output shaft of the electric motor 36 is input to a differential mechanism portion 38 disposed at the center of the axle 22, and the output of the differential mechanism portion 38 is the axle main body portion. The front wheels 20a and 20b are driven via an axle shaft (not shown) incorporated in the motor 40 and a universal joint.
Further, the front wheels 20a and 20b are configured by mounting core type rubber tires (not shown). Further, as shown in FIG. 1, a basic brake device 42 is provided inside the front wheels 20a and 20b.

  As shown in FIG. 1, the steering mechanism 50 includes a steering arm 52 that is connected to the left front wheel 20a and extends forward, a left tie rod arm 54 that extends rearward, and a right tie rod arm that is provided on the right front wheel 20b and extends rearward. 56, a left tie rod arm 54, and a tie rod 58 installed between rear end portions of the right tie rod arm 56. The left tie rod arm 54 and the tie rod 58, and the right tie rod arm 56 and the tie rod 58 are rotatably joined by spherical joints, respectively.

Next, the actuator mechanism 60 will be described.
The actuator mechanism 60 is assembled to the lower surface portion of the actuator frame 62 having a substantially L-shaped cross section, and is an electric motor 64 as a drive source, an electromagnetic clutch (connection / disconnection clutch) 66, and a ball screw feed mechanism (screw feed mechanism) 68. And a limit guide (feed amount limit mechanism) 70. The actuator frame 62, an electric motor 64 as a drive source assembled thereto, an electromagnetic clutch (connection / disconnection clutch) 66, a ball screw feed mechanism (screw feed mechanism) 68, and a limit guide (feed amount limit mechanism) 70. And unitized to form an actuator unit 72 (see FIG. 4).

  The electric motor 64 is attached to the lower surface portion 76 of the actuator frame 62 by the electric motor bracket 74, and the output shaft 78 of the electric motor 64 is connected to the screw portion 80 of the ball screw feeding mechanism 68 via the electromagnetic clutch 66. It is connected. A feed nut portion 82 is screwed into the screw portion 80, and moves while being guided by a slide base 84 attached to the lower surface portion 76 of the actuator frame 62. Further, the two limit guides 70 also serve as a support mechanism for the screw portion 80, and the feed nut portion 82 is movable between the limit guides 70. Further, the end portion of the operating rod 86 is joined to the feed nut portion 82 by a spherical joint.

  Further, the vertical wall surface 88 of the actuator frame 62 is bolted to brackets 90 and 90 fixed to the center cart frame 30. Furthermore, 92 and 92 are also bolted to the left and right hinge brackets fixed to the front end portions of the left and right side cart frames 26a and 26b. The hinge brackets 92, 92 are used at both ends when the carriage is provided with a steering mechanism that is not automatically steered but mechanically interlocked by guide wheels moving along a guide track. It is possible to mount a guide wheel beam part with a guide wheel attached to it, and it can be shared with an existing bogie frame.

  Note that a steering signal based on the track information is sent in advance to the electric motor 64 from a control means (not shown), and the operation of the electric motor 64 is controlled by the signal. The rotational speed, rotational speed, and rotational direction of the electric motor 64 are controlled, and the rotational force of the electric motor 64 is transmitted to the screw portion 80 of the ball screw feed mechanism 68 via the electromagnetic clutch 66 and is screwed into the screw portion 80. The combined feed nut portion 82 moves in the left-right direction, and transmits a steering force to the left and right wheels via the operating rod 86.

Next, the fail safe mechanism 100 will be described.
The fail-safe mechanism 100 includes a protection arm 104 assembled to a support bracket (protection wheel frame) 102 and protection wheels 106 and 106. The support bracket 102, the protection arm 104, and the protection wheels 106 and 106 are unitized to form a protection wheel unit 108 (see FIG. 5).

  The protective arm 104 has a shape extending in the longitudinal direction of the vehicle, and protective wheels 106 and 106 are attached to both front and rear ends thereof, with the central portion being a rotation center and the rotation center being positioned on the axis center line of the axle 22. Further, it is attached to a support bracket (protective wheel frame) 102 so as to be positioned below the differential mechanism portion 38. The support bracket 102 is bolted to a mounting seat 110 provided at the bottom of the differential mechanism portion 38. The mounting seat 110 may be made by casting or integrally casting the lower part of the housing at the time of manufacturing the housing.

  The protection wheel 106 has a cylindrical shape and is rotatably supported on the lower surface side of the front and rear end portions of the protection arm 104. The protection wheel 106 is inserted into the U-shaped protection track 14 and is disposed so that the peripheral surface thereof faces the side wall of the protection track 14. As the material of the protective ring 106, it is desirable to use urethane rubber having high vibration resistance and wear resistance, or a material using a steel belt used for rubber tires.

  Further, there is a gap between the protective wheel 106 and the side wall of the protective track 14 that is smaller than an allowable range in which the vehicle 10 should not be deflected further left and right from the track 12, and the steering mechanism 50 is normal. In the meantime, the protective ring 106 does not contact the side wall of the protective track 14. Usually, the gap between the protective wheel 106 and the protective track 14 is set to about 80 mm to 100 mm. That is, the vicinity of the end of the protective arm 104 and the front end of the steering arm 52 are connected by the interlocking rod 112, and the interlocking rod 112 and the protective arm 104 cause the protective wheel 106 to move in the same direction as the steering direction of the front wheels 20a and 20b. It is configured to face.

  As shown in FIGS. 2 and 3, a double spherical joint 114 is provided at the front end of the steering arm 52, and the double spherical joint 114 is linked to the end of the actuator mechanism 60 with the operating rod 86. The rod 112 is joined to the front end of the steering arm 52 with the end of the rod 112 overlapping vertically. That is, the end of the operating rod 86 is connected to the upper spherical joint 116, and the end of the interlocking rod 112 is connected to the lower spherical joint 118. By using such a double spherical joint 114, the space can be effectively used.

  As described above, the fail-safe mechanism 100 disconnects the electromagnetic clutch 66 and disconnects the driving force from the electric motor 64 when the control means (not shown), the actuator mechanism 60, or the like is abnormal, so that the protective wheels 106 and 106 are removed. Touching the protection track 14, steering along the protection track 14 is transmitted to the steering mechanism 50 via the interlocking rod 112, and the front wheels 20 a and 20 b are steered.

  According to the first embodiment as described above, the actuator unit 72 that is unitized may be attached to the existing bogie frame 28, so that the structure can be simplified and the bogie weight can be reduced. It can be attached to an existing carriage without significant renovation of the carriage, so that parts can be shared and costs can be reduced.

  Further, the actuator unit 72 includes an electric motor 64, an electromagnetic clutch 66 (connection / disconnection clutch), a ball screw feed mechanism (screw feed mechanism) 68, and a limit guide (feed amount limit mechanism) 70. Since it is configured to be assembled integrally with the frame 62, maintenance work such as periodic inspection of each part, replacement of parts, etc. can be performed by removing the actuator unit 72 and working on a unit basis. can do. Also, during assembly work, since necessary parts can be assembled in advance to the actuator unit 72 and then assembled to the carriage frame 28, the assembly workability can also be improved.

  Further, parts on the vehicle body side of the fail-safe mechanism 100 that operates when an abnormality occurs in the steering system are integrally assembled with a support bracket (protective wheel frame) 102 provided separately from the carriage frame 28 and the actuator frame 62. Thus, even if the cart is equipped with the fail-safe mechanism 100, the structure is simplified, the weight of the cart can be reduced, and the cart has not to be significantly modified. Can also be attached to existing carts, and can be used for parts sharing and cost reduction.

  In particular, since the guard wheel 106 is a part that contacts the guard track 14, it is necessary to regularly perform maintenance and inspection. Therefore, when performing maintenance such as periodic inspection and parts replacement, the guard wheel unit 108 is operated in units. This makes it possible to improve maintainability. Also, during assembly work, since necessary parts can be assembled in advance to the guard wheel unit 108 and then assembled to the axle 22, the assembly workability can also be improved.

Second Embodiment
Next, a second embodiment will be described with reference to FIGS. 2nd Embodiment shows the modification of the actuator unit 72 of 1st Embodiment, About the same element as 1st Embodiment, description is abbreviate | omitted using the same code | symbol.

  In the first embodiment, the actuator unit 72 includes an electric motor 64, an electromagnetic clutch 66 (connection / disconnection clutch), a ball screw feed mechanism (screw feed mechanism) 68, and a limit guide (feed amount limit mechanism) 70 in the actuator frame 62. In the second embodiment, as shown in the plan view of FIG. 6 and the front view of FIG. 8, the actuator unit 120 includes a motor subunit 122, a ball screw subunit ( Two subunits (screw feed mechanism subunit) 124 are integrally assembled to the actuator frame 125 (see FIG. 9).

  The motor subunit 122 is formed into a subunit by assembling the electric motor 64 and the electromagnetic clutch 66 to the electric motor bracket 126, and the electric motor bracket 126 is bolted to the lower surface portion of the actuator frame 125.

  Further, the ball screw subunit 124 constitutes a screw part 80 of the ball screw feed mechanism 68, a feed nut part 82 screwed to the screw part, a slide base 84, and a limit guide 70 on the ball screw unit frame 128. The screw receiving portions at the locations are assembled into sub-units, and are bolted to the lower surface portion of the actuator frame 62.

The end portion of the operating rod 86 is joined to the feed nut portion 82 by a spherical joint.
In addition, the vertical wall surface 130 of the actuator frame 125 assembled with the motor subunit 122 and the ball screw subunit 124 thus assembled into the left and right brackets 132 and 132 fixed to the center carriage frame 30. It is bolted.
Note that the transmission of the steering force to the left and right front wheels 20a, 20b is the same as in the first embodiment.

  According to the second embodiment as described above, the actuator unit 120 is composed of the subunits of the motor subunit 122 and the ball screw subunit (screw feed mechanism subunit) 124. At the time of work such as parts replacement at the time, it is possible to work by removing only the subunit to which the target part is assembled, so that workability such as maintenance can be further improved.

  Also in assembly work, the motor subunit 122 and the ball screw subunit 124 are assembled, and then the actuator unit 120 is used, so that assembly work and necessary adjustment work can be performed in units of subunits. This can be further improved.

  The specific structures of the actuator units 72 and 120 described in the first and second embodiments have been described with respect to the electric motor 64 and the ball screw feed mechanism 68. However, any structure that translates may be used. Of course, a pneumatic or hydraulic servo cylinder structure, a linear motor structure, or the like may be used.

  According to the present invention, in a bogie structure for a track-type vehicle that automatically runs on a predetermined track on the basis of steering information from a control means, the structure can be simplified and reduced in weight, and high-speed operation can be achieved. It is possible to provide a cart structure that can be maintained and improved in maintainability and assemblability, which is advantageous when the track system is applied to a cart of a vehicle.

1 is a plan view showing a first embodiment of a bogie structure for a track system vehicle according to the present invention. It is a side view which shows 1st Embodiment. It is a front view which shows 1st Embodiment. It is explanatory drawing of the actuator unit of 1st Embodiment. It is explanatory drawing of the guard ring unit of 1st Embodiment. It is a top view which shows 2nd Embodiment of the trolley | bogie structure of a track system vehicle which concerns on this invention. It is a side view which shows 2nd Embodiment. It is a front view which shows 2nd Embodiment. It is explanatory drawing of the actuator unit of 2nd Embodiment. It is explanatory drawing of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle 12 Track 20a, 20b Front wheel 22 Axle 26a, 26b Side bogie frame 28 Bogie frame 30 Center bogie frame 50 Steering mechanism 60 Actuator mechanism 62, 125 Actuator frame 64 Electric motor 66 Electromagnetic clutch (disconnection clutch)
68 Ball screw feed mechanism (screw feed mechanism)
70 Limit guide (feed limit mechanism)
72, 120 Actuator unit 82 Feed nut part 100 Fail safe mechanism 108 Guard wheel unit 122 Motor subunit 124 Ball screw subunit (screw feed mechanism subunit)

Claims (4)

In a truck structure of a track system vehicle that travels by automatically steering on a predetermined track based on steering information from a control means,
A bogie frame having a fixed axle and constituting a skeleton of the bogie, an actuator mechanism for applying a steering force of automatic steering to the steering mechanism of the vehicle, and an actuator frame in which the components making up the actuator mechanism are different from the bogie frame A truck structure for a track-type vehicle, comprising: an actuator unit integrally formed on the truck frame, wherein the actuator unit is attached to the truck frame.   The track structure vehicle bogie structure according to claim 1, wherein the actuator unit comprises an electric motor, a connection / disconnection clutch, a screw feed mechanism, and a feed screw support bearing which are assembled together.   The track structure vehicle bogie structure according to claim 1, wherein the actuator unit is composed of a subunit of a motor subunit and a screw feed mechanism subunit.   When an abnormality occurs in the steering system, the vehicle is provided with a fail-safe mechanism for bringing a steering wheel into contact with a protective track provided on the track to steer the steering mechanism. The guard wheel unit is integrally assembled with a guard wheel frame provided separately from the cart frame and the actuator frame to form a guard wheel unit, and the guard wheel unit is attached to the axle or the cart frame. 1. A truck structure for a track system vehicle according to 1.

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