JP3510424B2 - Guide rail car traveling device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling device for a guide rail car provided in a guide rail type train or a side guide type train.

[0002]

2. Description of the Related Art In a traveling device for a guide railcar having four running wheels of rubber tires per vehicle and four guiding wheels,
Japanese Patent Application Laid-Open No. Sho 59-59 discloses that the structure for supporting the axle is improved so that the vertical displacement of the guide wheel device due to the expansion and contraction of the suspension spring is eliminated and the vibration of the guide wheel device is prevented from being transmitted to the vehicle body. No. 11955. In FIGS. 2 and 3 described in this publication, FIG. 4 is a diagram in which a drive device for driving a pair of running wheels in the left-right direction and a brake device for braking the running wheels are added according to an actual usage pattern. And shown in FIG.

4 and 5, 1 is an electric motor, 2 is a propulsion shaft whose one end is connected to the output shaft of the electric motor 1 via a universal joint 3, and 5 is another end of the propulsion shaft 2 via a universal joint 4 . And a reduction gear connected to each other, which form a drive unit 6. 4 and 5, 7 is a vibration-proof rubber, 9 is a running wheel, 10 is an axle body, 11 is a frame, 12 is a mounting seat, 13 is a vertical pin, 14 is a rotating arm, 15 is a guide wheel, 16 Is a guide wheel device, 17 is an underframe, 18 is a bracket, 19a is an upper rod, 19b is a lower rod, 20
a and 20b are ball joints , 21a and 21b are cylindrical anti-vibration rubbers, 22 is a bracket, 23 is a suspension air spring, and 24 is a suspension air spring.
Is a control valve, 25 is a rigid member, 28 is a king pin, 29 is a lateral movement amount restriction stopper, 30 is a stopper rubber, 32 is a horizontal rod, 34 is a cylindrical anti-vibration rubber, 35 is a bracket, 36
Is a disc rotor, 37 is a disc brake, 41 is an oil damper, 42 is a stopper, 43 and 44 are steering rods, and 45 is a tie rod. Disk rotor 3
6 and the disc brake 37 form a braking device 38. Further, the axle body 10 and the frame 11 integrally connected to the axle body 10 form an axle frame.

The suspension system in the traveling device is constructed as follows. At both ends of the axle body 10, running wheels 9 of rubber tires are horizontally swayably supported by king bins 28, and mounting seats 12 of the frame 11 are provided immediately inside thereof.
This portion is bolted to the axle body 10. The suspension air spring 2 is provided between the frame 11 and the underframe 17.
3 is provided to support in the vertical direction. Further, the axle frame is supported at two left and right positions by an upper rod 19a pivotally attached at both ends to the frame 11 and the bracket 18, and both ends are pivotally attached to the bracket 18 and the bracket 22 fixed to the axle body 10. The attached lower rod 19a supports the right and left at two places, and supports the front and rear directions. Further, the lateral support of the axle frame is made by attaching the horizontal rod 32 between the bracket 35 welded to the underframe 17 and the frame 11. The electric motor 1 of the drive device 6 in the traveling device is mounted on the underframe 1 via the anti-vibration rubber 7.
The speed reducer 5 is supported by the axle body 10. The output shaft of the speed reducer 5 is connected to the input shaft of the axle body 10, so that the traveling wheels 9 are driven via an axle shaft and a universal joint (not shown) incorporated in the axle body 10.

The electric motor 1 of the drive device 6 in the traveling device is supported by the underframe 17 via the anti-vibration rubber 7, and the speed reducer 5 is supported by the axle body 10. The output shaft of the speed reducer 5 is connected to the input shaft of the axle body 10, whereby
The traveling wheels 9 are driven via an axle shaft and a universal joint (not shown) built in the axle body 10.

Brake device 38 in the traveling device
Was installed there by utilizing the internal space of the traveling wheel 9. Regarding the guide system in the traveling device, the left and right guide wheels 15 are adapted to roll and be guided along left and right guide rails (not shown). Then, the displacement of these guide wheels 15 is transmitted to the guide wheel device 16 by the two left and right rotating arms 14, and the steering rods 43, 4
4, the traveling wheels 9 are rotated via the tie rods 45. As a result, the left and right traveling wheels 9 are steered synchronously according to the guides on the left and right guide rails.

[0007]

In order to improve the riding comfort of the vehicle, it is necessary to reduce the unsprung weight. However, in the above-described conventional configuration, the drive device 6 installed below the underframe 17 connects the electric motor 1 and the speed reducer 5 via the propulsion shaft 2 arranged therebetween. A heavy speed reducer 5 incorporating a bevel gear, an operating gear, etc. is supported by the axle body 10, and the speed reducer 5 is arranged below the air spring 23. In this way, the drive device 6 that requires the propulsion shaft 2 is not only a complicated structure and contributes to an increase in weight, but also the heavy speed reducer 5 is added to the unsprung weight. It has a large lower weight, which is a hindrance to further improving the riding comfort.

Moreover, although the axle body 10 is bent as the vehicle moves up and down as the vehicle travels, in the conventional construction in which the axle body 10 supports the speed reducer 5 as described above,
The influence of the flexure propagates to the axle shaft, which is a drive component in the speed reducer 5, etc., to generate stresses for rotation and bending, which greatly affects their strength. for that reason,
It is necessary to increase the strength in consideration of this effect in advance,
It contributes to the weight increase.

Further, as described above, the drive device 6 is provided with the propulsion shaft 2 as a relay member.
The dimension L from the center of 0 to the electric motor 1 is large. Along with this, the underfloor outfitting space of the vehicle is narrowed, and the gap between the equipment in the arrangement of the underfloor equipment is small, so there is a problem that wiring and piping under the floor are difficult.

[0010] Therefore, the problem to be solved by the present invention is to obtain a traveling device for a guide rail car that can improve the riding comfort, reduce the weight, and facilitate wiring and piping under the floor. .

[0011]

According to the present invention, a vehicle has four steerable wheels that can be steered, and the steerable wheels are horizontally rotated and steered in conjunction with lateral displacement of a guide wheel device. A spring for supporting a vertical load is provided between the axle frame to which the guide wheel device is attached and the vehicle body, and the traveling wheels that are paired in the left-right direction are arranged on both sides in the width direction of the axle frame. It is premised on a traveling device for a guide rail vehicle in which the driving means for driving is disposed below the vehicle body.

In order to solve the problem, the invention of claim 1 forms the drive means with an electric motor and a speed reducer which is directly connected to the electric motor and is arranged in a non-contact manner inside the axle frame. The entire drive means is supported by the vehicle body, and the drive shaft connected to the traveling wheels through the axle frame and the output shaft of the speed reducer are connected via a universal joint. . This invention
The axle frame is a rectangular frame-shaped frame that opens in the traveling direction.
Has a main body, and the speed reducer is provided inside the frame main body.
Is provided in non-contact with the frame body.
Contains. Further, in the invention, the spring is an air spring.
The number of second frames that form part of the frame body is small.
An auxiliary air chamber consisting of an internal space that is at least partially sealed
And the auxiliary air chamber is in communication with the air spring
It includes that. Also, the present invention provides the output of the speed reducer.
Stops on the disk rotor mounted on the shaft and the speed reducer.
The brake device formed by the mounted disc brake
Included to be exposed to the wind.

According to the first aspect of the present invention, since the entire driving means is supported by the vehicle body, the speed reducer of this means does not add to the unsprung weight, and the unsprung weight can be reduced accordingly. Further, since the speed reducer arranged inside the axle frame is not in contact with the axle frame, the influence of the bending of the axle frame due to the vertical movement of the vehicle body, etc. does not affect the speed reducer and adversely affect it. Therefore, it is not necessary to configure the speed reducer or the like to have a large strength in consideration of the bending, and the weight thereof can be reduced, so that the propulsion shaft which has been conventionally required can be omitted due to the direct connecting structure of the driving means. The weight can be reduced and the structure of the driving means can be simplified.
Further, the direct connection structure of the drive means allows the dimension from the center of the axle frame to the electric motor to be shortened, so that a large space for underfloor outfitting can be secured accordingly.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. 1 to 3 are the first
FIG. 3 is a plan view and a cross-sectional view showing one axle in the traveling device according to the embodiment of the present invention. The axle frame indicated by 110 in these figures has a first frame 146 and a second frame 147.
The third frame 148 is integrally formed with the mounting seat 110a by a plurality of bolts.

The second frame 147 is the upper frame,
The third frame 148 is a U-shaped lower frame, and these are formed by the bolt connection to form a frame body 150 in the shape of a mouth, in other words, a horizontally long rectangular frame as shown in FIG. There is. The second frame 147 hung across both ends of the third frame 148 in a substantially horizontal shape.
Has a rectangular tube shape with its both ends in the longitudinal direction closed, and its sealed internal space has an auxiliary air chamber 147 described later.
It is designed to be used as a. When such an auxiliary air chamber 147a is provided, it may be at least a part of the second frame 147, or the second,
The insides of the third frames 147 and 148 may be communicated with each other and provided over the internal space of the frame body 150.

The first frame 146 is the frame body 150.
A pair of left and right rotating arms 114 are connected to the frame 146 by a vertical pin 113 so as to project forward from the frame 146. A guide wheel device 116 including a guide wheel 115 is supported at the tip of the rotary arm 114 that constitutes the support device. The guide wheels 115 supported on both ends of the guide wheel device 116 are provided at left and right outer positions that are wider than the axial distance of the running wheels 109 described later , that is, the distance between the wheels of the left and right running wheels 109, respectively , and are not shown. It is designed to be transferred to the guide rail.

The axle frame 110 is the frame 11
At a position rearward of 0, a bracket 118 protruding from the underside of an underframe 117, which is a part of a vehicle body (not shown), by bolts is supported in the front-rear direction via four upper and lower rods. Specifically, the upper rods 119a arranged one on the left and one on the right and the lower rods 119b arranged one on the left and the lower are parallel to each other and have substantially the same length. Is the axle frame 11
0 to the frame body 150 to the ball joint 120
a and 120b, respectively, and tubular vibration-proof rubbers 121a and 121a are attached to the bracket 118.
They are pivotally connected via b.

Such a support structure in the front-rear direction has a vertical rod 119a whose both ends are pivotally attached to the bracket 118 and the frame body 150, regardless of the vertical displacement of the vehicle body.
The geometric parallelogram formed by 119b only changes from a rectangle to a rhombus with the vertical displacement of the tubular vibration-proof rubbers 121a, 121b.
The straight line connecting 120b keeps vertical and the axle frame 11
0 and the guide wheel device 116 supported thereby are excellent in that they do not change in the vertical direction, and high-frequency vibrations are transmitted to the vehicle body (the underframe 117) by the tubular vibration-proof rubbers 121a and 121b. It is excellent in that it can prevent

A plurality of air springs 123, for example, are provided as suspension springs between the underframe 117 and the frame body 150 of the axle frame 110, and the underframe 117 is supported by these springs 123 in a vibration-proof manner. . Air spring 12
3 is supplied with pressurized air from a control valve 124 via a conduit (not shown), and is controlled so that its static height becomes an appropriate constant value. The control valve 124 responds to the change in height between the upper second frame 147 and the underframe 117 with a time lag .

The air spring 123 is connected to the auxiliary air chamber 147a, which is an internal space of the second frame 147, through a conduit (not shown). With this configuration, the spring constant of the air spring 123 supporting the vertical load is set to the auxiliary air chamber 14
It can be variously changed according to the volume of 7. Therefore, even if the vehicle size and total weight are slightly different, the same air spring 1 can be obtained by changing the volume of the auxiliary air chamber 147a.
It is excellent in that the spring characteristic of No. 23 can be easily adapted to the one suited to the size and the like.

A single horizontal rod 132 is provided to support the lateral force of the vehicle body. The rod 132 is pivotally attached to the upper surface of the third frame 148 of the axle frame 110 with one end as the traveling device side end 133 via a vibration-proof rubber, and the other end is welded to the underframe 117 as the vehicle body side end 134. It is pivotally attached to the stopped bracket 135 via an anti-vibration rubber. Anti-vibration rubbers at the left and right ends of the horizontal rod 132 prevent transmission of high-frequency vibrations to the vehicle body.

Holes 148a are formed in the left and right sides of the third frame 148 of the frame body 150 in the horizontal direction, and these holes 148 are formed.
The drive shafts 149 are respectively passed through a. Both drive shafts 14
A double shaft structure 9 is connected through a spline mechanism (not shown) so as to be slidable in the axial direction and integrally rotated in the axial direction. Running wheels 109 of rubber tires are pivotally attached to the ends of the drive shafts 149 located outside the frame body 150 via king pins 128, respectively. These traveling wheels 109 are laterally displaced relative to the vehicle body of the guide wheel device 116, that is, the axle frame 11
King pin 12 according to lateral displacement relative to zero
It is provided so as to rotate horizontally around the steering wheel 8.

In order to regulate the lateral displacement during this steering operation, stoppers 129 are provided inside each of the two left and right rotary arms 114, and a stopper rubber is provided on the first frame 146 so as to face the stoppers 129. 130 is provided.
Further, by providing a shim 131 on the back surface of the stopper rubber 130 and increasing or decreasing the thickness thereof, the regulation of the lateral displacement amount can be adjusted.

Reference numeral 141 in FIGS. 1 and 2 denotes an air spring 12.
3 is a stopper that is arranged in parallel with the air spring 123 and limits the displacement of the air spring 123 when it extends abnormally, and is also used when the vehicle body is lifted during maintenance work. Reference numerals 143 and 144 are provided for guiding wheel device 11 in order to bring the lateral movement of guiding wheel device 116 into rotational steering of traveling wheel 109.
A steering rod connecting 6 and the traveling wheel 109, 1
Reference numeral 45 denotes a tie rod which is provided by connecting the left and right traveling wheels 109 so that they can be steered in synchronization with each other .

Below the underframe 117, the traveling wheels 1 are provided.
A driving device 101 that serves as a driving unit that rotationally drives 09 is arranged. The drive device 101 includes an electric motor 102.
And a speed reducer 103 directly connected to this.
The speed reducer 103 has a speed reduction mechanism (not shown) such as a bevel gear or a differential gear built in the speed reducer frame, and the input shaft of this mechanism is directly connected to the motor shaft of the electric motor 102. Is directly connected to the electric motor frame of the electric motor 102 to be handled integrally with the electric motor 102.

Such a drive unit 101 includes the electric motor 1
02 and a plurality of anti-vibration rubbers 104 arranged on the speed reducer 103, and attached to the bracket 118 or the like. That is, the entire drive device 101 is supported by the carriage 117 in a vibration-proof manner. The anti-vibration rubber 104 is the driving device 1
It is used to prevent the transmission of vibration from the traveling wheel 109 side to the vehicle body side while supporting the own weight of 01 and the reaction force of the moment of the driving torque. Since the antivibration rubber 104 bears only such a load burden and does not bear the other load burden, a compact antivibration rubber 104 can be adopted.

The speed reducer 103 of the drive unit 101 is inserted inside the frame main body 150 having a V shape, and the speed reducer 103 and the frame main body 150 are provided in a non-contact manner. As shown in FIG. 3, the speed reducer 1
The output shaft 103a of No. 03 horizontally penetrates the speed reducer frame in the thickness direction, and both ends of the output shaft 103a project outside the speed reducer frame. Both ends of the output shaft 103a are connected to the inner ends of the drive shafts 149 located in the frame body 150 via universal joints 105, respectively. The universal joint 105 transfers the power from the speed reducer 103 to the traveling wheels 109 in the vertical direction displacement of the vehicle body and the traveling wheels 109.
It is provided to absorb the horizontal rotational displacement of the. The spline mechanism of the drive shaft 149 is provided to absorb the axial displacement of the drive shaft 149 in the power transmission.

As shown in FIG. 3, disc rotors 138 are attached to both ends of the output shaft 103a, and disc brakes 139 for generating friction braking force on the rotors 138 are provided on both side faces of the speed reducer 103. Each is bolted. These disk rotors 138
Further, the disc brake 139 constitutes a braking device 140 as a braking means, and the device 140 is provided so as to be directly exposed to traveling wind outside the traveling wheel 109 by the above arrangement.

In the configuration of the traveling device, the driving device 1
The power of the electric motor 102 of No. 01 is transmitted to both drive shafts 149 via the universal joint 105 after being decelerated by the speed reducer 103.
8 is provided to the traveling wheels 109 that are paired in the left-right direction on both sides in the width direction of the axle frame 110. In this way, the traveling wheels 109 are rotationally driven so that the guide rail car travels. In this traveling, the left and right guide wheels 115 roll and are guided along the left and right guide rails (not shown), and the displacement of these guide wheels 115 is transmitted to the guide wheel device 116 by the two left and right rotating arms 114. The traveling wheels 1 through the steering rods 143, 144 and the tie rods 145.
09 is rotated horizontally, and accordingly, the left and right running wheels 109 are steered synchronously according to the guides on the left and right guide rails. It should be noted that the displacement of the vertical movement of the vehicle body and the horizontal movement of the traveling wheels 109 in such traveling operation is caused by the universal joint 10.
5 is absorbed by the joint motion and the drive shaft 149
The axial displacement of (1) is absorbed by the sliding action of the spline mechanism provided in the middle thereof, and the high-frequency vibration from the axle frame 110 etc. to the vehicle body can be reduced by the anti-vibration effect of the anti-vibration rubber at various places.

By the way, the traveling apparatus having the above-described structure is provided with a drive unit 101 in which a speed reducer 103 is directly connected to an electric motor 102, and the entire unit 101 is an underframe 11 which is a part of a vehicle body.
We support to 7. In other words, the underframe 117 above the air spring 123 that dynamically expands and contracts as the vehicle travels.
Supports the entire drive device 101. With such a sprung mount, the speed reducer 103 of the drive unit 101 does not add to the unsprung weight, and the unsprung weight can be reduced accordingly. Therefore, the riding comfort of the vehicle can be improved.

Further, the speed reducer 103 mounted on the spring as described above has the frame body 15 of the axle frame 110.
It is arranged in a non-contact manner with respect to the main body 150 on the inside of 0. In other words, the suspension system that supports the load of the vehicle body and the drive system that rotates the traveling wheels 109 are separated, and the axle frame 110 is a dedicated member for supporting the load. In addition, in the first embodiment, the axle frame 110 has a rectangular frame shape, so that the axle frame 110 has particularly high rigidity and excellent load supporting performance. The frame 148 may have an upside-down shape, that is, a U-shape with an open lower end.

Therefore, even if the axle frame 110 supporting the load due to the vertical movement of the vehicle body is bent, the influence thereof does not spread to the speed reducer 103 and adversely affect the drive system. It is not necessary to construct the speed reducer 103 with high strength, and the weight of the frame body 150, the speed reducer 103 and the like can be reduced as a limit design. In addition, as already described, the electric motor 102 of the drive device 101
Since the propulsion shaft, which has been conventionally required, can be omitted by directly connecting the drive device 101 and the speed reducer 103, the weight of the drive device 101 can be reduced and the structure can be simplified.

Moreover, since the electric motor 102 of the drive unit 101 and the speed reducer 103 are directly connected as described above, the dimension l from the center of the frame main body 150 in which the speed reducer 103 is arranged to the electric motor 102 (FIG. 1). , (See FIG. 2), the installation space occupied by the drive unit 101 can be greatly reduced, and the underfloor outfitting space can be significantly widened. Therefore, the gap between the devices arranged under the floor becomes wide, so that wiring and piping work under the floor can be easily performed.

[0034] The running device of the construction, the blade
Since the device 140 is arranged outside the traveling wheel 109 rather than inside the traveling wheel 109, the diameter of the disc rotor 138 can be increased and the heat capacity of the rotor 138 can be increased without being restricted by the traveling wheel 109. Since the brake device 140 is directly exposed to the running wind, the disk rotor 138 and the like can be effectively air-cooled, and the temperature rise can be reduced, whereby the fade phenomenon of the brake can be effectively prevented. .

The [0035] improved these braking performance, or increase the vehicle number of passengers, even if the vehicle is high-speed operation has been kinetic energy than while now increased, the brake
Since the braking operation in the device 140 can be reliably ensured and the safety in vehicle operation can be ensured, it is possible to cope with an increase in the number of vehicles in the vehicle and an increase in the speed of the vehicle.

[0036]

The present invention is carried out in the form as described above, and has the following effects. According to the invention of claim 1, the unsprung weight is reduced by supporting the entire driving means on the vehicle body, so that the riding comfort can be improved. Then, the reduction gear arranged inside the axle frame and the axle frame are brought into non-contact with each other so that the influence of the bending of the axle frame does not affect the reduction gear and adversely affect it, and the propulsion shaft is omitted. Since the electric motor of the drive means and the speed reducer are directly connected to each other, the weight can be reduced and the structure of the drive means can be simplified. Further, the direct connection structure of the drive means shortens the dimension from the center of the axle frame to the electric motor to secure a large space for underfloor outfitting, which facilitates wiring and piping under the floor.

[Brief description of drawings]

FIG. 1 is a plan view showing the configuration of a traveling device according to a first embodiment of the present invention.

FIG. 2 shows a configuration of a traveling device according to a first embodiment.
Sectional drawing shown along the middle AA line.

FIG. 3 shows a configuration of a traveling device according to the first embodiment.
Sectional drawing shown along the middle BB line.

FIG. 4 is a plan view showing a configuration of a traveling device according to a conventional example.

FIG. 5 is a cross-sectional view showing a configuration of a traveling device according to a conventional example, taken along line C-C in FIG. 4.

[Explanation of symbols]

101 ... Driving device (driving means), 102 ... Electric motor, 10
3 ... reducer, 103a ... output shaft of the reducer, 105 ... universal joint, 109 ... running wheels, 110 ... axle frame, 11
5 ... Guide wheel, 116 ... Guide wheel device, 117 ... Underframe (part of vehicle body), 118 ... Bracket, 123 ... Air spring (suspension spring), 138 ... Disk rotor, 139 ... Disk
Quake brake, 140 ... Braking device, 147 ... Frame
Second frame of the main body, 147a ... Auxiliary space of the second frame
Air chamber, 148 ... Third frame of frame body, 149 ...
Drive shaft, 150 ... Frame body.

Claims (4)

(57) [Claims] 1. A vehicle having four steerable wheels that can be steered ,
Along with the lateral displacement of the guide wheel device, the traveling wheel is horizontally rotated and steered, and a spring for supporting a vertical load is provided between an axle frame to which the guide wheel device is attached and a vehicle body, In a traveling device of a guide rail vehicle, wherein drive means for driving the traveling wheels that are paired in the left-right direction are disposed on both sides of the axle frame in the width direction, and the drive means is an electric motor and the electric motor. A drive shaft which is directly connected to the drive shaft and is formed in a non-contact manner inside the axle frame, and which supports the entire drive means on the vehicle body and is connected to the traveling wheel through the axle frame. A traveling device for a guided railcar, wherein the output shaft of the speed reducer is connected via a universal joint. 2. The axle frame which is opened in the traveling direction.
It has a square frame-shaped frame body, and the inside of this frame body
The reduction gear is provided in a non-contact manner with the frame body.
The guide rail car according to claim 1, characterized in that
Traveling device. 3. The frame is an air spring, and the frame
The second frame forming part of the main body is sealed at least in part
It has an auxiliary air chamber consisting of
An air chamber is connected to the air spring.
The traveling device for a guided railcar according to claim 1. 4. A disk mounted on the output shaft of the speed reducer.
Disc breaker stopped by crawler and said speed reducer
The brake device that the key is designed to be exposed to the running wind
Any one of claims 1 to 3 characterized in that
The traveling device for the guided rail car according to item 1.