JP2016010987A - Bogie angle interlock type steering truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new bogie angle interlock type steering truck.SOLUTION: In a bogie angle interlock type steering truck 10, a first steering mechanism section 30 for connecting a steering beam 14 and an axle box 24fl of a front shaft 21 so as to steer the front shaft 21 is provided on only one side of a travelling direction right side and a travelling direction left side. A second steering mechanism section 40 for connecting the steering beam 14 and an axle box 24rr of a rear shaft 22 so as to steer the rear shaft 22 is provided on only the other side of the travelling direction right side and the travelling direction left side.

Description

  The present invention relates to a bogie angle interlocking steering cart.

  As a bogie for a railway vehicle, a bogie angle interlocking steering bogie is known (for example, see Patent Document 1). The conventional bogie angle-linked steering cart mechanically detects the relative yaw angle (bogie angle) between the vehicle body and the cart, and transmits the movement to the axle box via the four steering links to transmit the front and rear wheel shafts. It is possible to reduce the steady lateral pressure during the curve running by mechanically controlling the attack angle.

JP-A-10-203364

  A conventional bogie angle-linked steering cart requires two steering levers and four steering links for each cart as compared with a cart with a bolster. Therefore, for example, it takes a considerable amount of labor and time to assemble the steering lever and the steering link to the carriage.

  The present invention has been devised for the purpose of realizing a new bogie angle-linked steering cart in view of the above-described problems.

  According to a first aspect of the present invention for solving the above-described problems, a first steering mechanism unit for steering a front shaft by connecting a steering beam and a front axle box (hereinafter referred to as “front axle box”) is provided. A second steering mechanism portion that is provided only on one of the right side and the left side in the traveling direction and connects the steering beam and a rear axle box (hereinafter referred to as “rear axle box”) to steer the rear axle; This is a bogie angle-linked steering cart provided only on the other side of the right side and the left side of the traveling direction.

  According to the first invention, it is possible to realize a new bogie angle interlocking steering cart that can reduce the number of parts of the steering mechanism portion as compared with the conventional bogie angle interlocking steering cart. Thereby, the man-hour and manufacturing cost which a maintenance requires, for example can be reduced.

  According to a second aspect of the present invention, one of the first steering mechanism and the second steering mechanism connects the steering beam and the front axle box via a steering link via a steering lever. The other steering mechanism portion of the first steering mechanism portion and the second steering mechanism portion connects the steering beam and the front axle box with a steering link without using a steering lever. This is a bogie angle interlocking steering cart of the first invention having the above-described configuration.

  According to the second invention, the number of parts can be further reduced.

  According to a third aspect of the present invention, the front axle box is elastically supported so as to be able to move back and forth with respect to the bogie frame, and the side of the left and right front axle boxes on which the first steering mechanism is provided. Is the bogie angle interlocking steering cart of the first or second invention, which is supported with lower rigidity than the side where it is not provided.

  According to a fourth aspect of the present invention, the rear axle box is elastically supported so as to be able to move back and forth with respect to the bogie frame, and the side of the left and right rear axle boxes on which the second steering mechanism is provided. Is a bogie angle-linked steering cart according to any one of the first to third inventions, which is supported at a lower rigidity than the side where it is not provided.

  According to the third and fourth aspects, the steering response is improved.

The left view which shows the structural example of the bogie angle interlocking type steering trolley | bogie of 1st Embodiment. The right view which shows the structural example of the bogie angle interlocking type steering trolley | bogie of 1st Embodiment. The top view schematic diagram which shows the structural example of the bogie angle interlocking type steering trolley | bogie of 1st Embodiment. The top view schematic diagram which shows the structural example of the bogie angle interlocking type steering trolley | bogie of 2nd Embodiment. The top view schematic diagram which shows the structural example of the bogie angle interlocking type steering trolley | bogie with a different steering mechanism. The top view schematic diagram which shows the structural example of the bogie angle interlocking type steering trolley | bogie with a different steering mechanism. The top view schematic diagram which shows the structural example of the bogie angle interlocking type steering trolley | bogie with a different steering mechanism. The top view schematic diagram which shows the structural example of the bogie angle interlocking type steering trolley | bogie with a different steering mechanism. The graph which shows the result of a comparative test. The figure which shows the modification of the bogie angle interlocking type steering cart based on 1st Embodiment.

[First Embodiment]
FIG. 1 is a left side view showing a configuration example of a bogie angle-linked steering cart 10 according to the first embodiment, and FIG. 2 is a right side view thereof. FIG. 3 is a schematic top view showing an example of the structure of the steering cart mechanism.

  The bogie angle interlocking steering cart 10 of this embodiment supports the load of the vehicle body 8 via a pillow spring 16 (see FIGS. 1 and 2), and can turn left and right by a center pin 12 in the center of the cart frame 11 ( The vehicle body 8 is supported by the steering beam 14 pivotally supported by the variable yaw angle (see FIG. 3). In addition, right and left ends of the front shaft 21 that is the front wheel shaft and the rear shaft 22 that is the rear wheel shaft are appropriately rigid in the vertical and forward / backward / left / right directions via the shaft box 24 (24fl, 24fr, 24rl, 24rr). And is elastically supported by the carriage frame 11. In addition to the description of FIG. 3 of the first embodiment, in FIGS. 4 to 8 and 10, this elastic support is simply shown as a spring.

  Further, in particular, as shown in FIGS. 1 and 3, the first steering mechanism 30 for the front shaft 21 is provided on the left side of the bogie angle interlocking steering cart 10, and the front shaft 21 is attached to the cart frame 11. On the other hand, it is possible to have a steering angle. As shown in FIGS. 2 and 3, a second steering mechanism 40 for the rear shaft 22 is provided on the right side surface, so that the rear shaft 22 can have a steering angle with respect to the carriage frame 11. It has become.

  Specifically, as shown in FIG. 3, the first steering mechanism 30 includes a first steering lever 32 supported by a pivot 31 erected on the carriage frame 11 at the left outer edge so as to be horizontally rotatable, A first steering link 33 that connects the first steering lever 32 and the axle box 24fl on the left side of the front shaft 21;

  The first steering lever 32 is connected to the left end of the steering beam 14 by a beam connecting shaft 34 in the vertical direction, and swings in conjunction with the left and right turning of the steering beam 14.

  The rear end portion of the first steering link 33 is connected to the first steering lever 32 by a vertical lever connecting shaft 35 at a position outside the pivot 31. Further, the front end portion of the first steering link 33 is connected to the shaft box 24fl on the left side of the front shaft by the shaft box connecting shaft 36 in the vertical direction.

  That is, when the vehicle approaches a curve and the bogie angle changes, the steering beam 14 turns left and right to swing the first steering lever 32. Then, the axle box 24fl on the left side of the front shaft is pulled toward the carriage frame 11 or pushed away from the carriage frame 11 by the swing of the first steering lever 32. Specifically, as shown in FIG. 3, when the vehicle is traveling on the right curved track 4, that is, when the left side is on the curve outer side (outer track side), the first steering mechanism unit 30 has the axle box 24 fl as the bogie frame 11. It is pushed away from the side and operates so as to give the front shaft 21 a steering angle suitable for right curve traveling. On the contrary, while traveling on the left curve track, the left side is on the curve inner side (inner track side), and in this case, the first steering mechanism 30 pulls the axle box 24fl toward the carriage frame 11 and moves the front shaft 21. It operates to give a steering angle suitable for left curve driving.

  On the other hand, the second steering mechanism 40 includes a second steering lever 42 supported by a pivot 41 erected on the carriage frame 11 at the right outer edge, and a second steering lever 42 and a rear shaft 22. And a second steering link 43 that connects the right axle box 24rr.

  The second steering lever 42 is connected to the right end of the steering beam 14 by a vertical beam connecting shaft 44, and swings in conjunction with the left and right turning of the steering beam 14.

  The front end portion of the second steering link 43 is connected to the second steering lever 42 by a lever connecting shaft 45 at a position inside the pivot shaft 41 (on the steering beam 14 side). Further, the rear end portion of the second steering link 43 is connected to the right side rear axle box 24rr by the vertical axis box coupling shaft 46.

  That is, when the left and right turning movement of the steering beam 14 causes the second steering lever 42 to swing, the shaft box 24rr on the right side of the rear shaft is attracted to the cart frame 11 or pushed away from the cart frame 11 by the swing. . Specifically, as shown in FIG. 3, when the vehicle is traveling on the right curved track 4, that is, when the right side is on the inside of the curve (inner track side), the second steering mechanism unit 40 includes the right axle box on the rear shaft. 24rr is attracted to the bogie frame 11 and operates so as to give the rear shaft 22 a steering angle suitable for right curve traveling. On the other hand, while traveling on the left curve, the right side is on the outside of the curve (on the outer track side), and in this case, the second steering mechanism unit 40 pushes the axle box 24rr on the right side of the rear axis away from the carriage frame 11 and The shaft 22 operates so as to give a steering angle suitable for left curve traveling.

  In addition, the structure of the 1st steering mechanism part 30 and the 2nd steering mechanism part 40 can change suitably the number and shape of a lever and a link, if a steering force can be transmitted to the connected wheel axle.

  According to the present embodiment, it is possible to realize a new bogie angle interlocking cart with a reduced number of parts compared to a conventional bogie angle interlocking steering cart. Thereby, the man-hour and manufacturing cost which a maintenance requires, for example can be reduced.

[Second Embodiment]
FIG. 4 is a schematic top view showing a configuration example of a bogie angle interlocking steering cart 10B according to a second embodiment to which the present invention is applied.

  This embodiment is basically realized in the same manner as the first embodiment, but the installation position relationship of the first steering mechanism 30 and the second steering mechanism 40 with respect to the carriage frame 11 is the same as that of the first embodiment. Is different in that it is symmetrical.

  That is, when viewed in a diagonal relationship with the center pin 12 as a reference, in the first embodiment, the first steering mechanism unit 30 and the second steering mechanism unit 40 are arranged in a diagonal relationship between the left front and the right rear of the carriage. However, the first steering mechanism 30 and the second steering mechanism 40 of the present embodiment are arranged in a diagonal relationship between the right front and the left rear.

  More specifically, in the present embodiment, the first steering mechanism 30 for the front shaft 21 is provided on the right side of the bogie angle interlocking steering cart 10B, and the front end of the first steering link 33 is a shaft on the right side of the front shaft. It is connected to the box 24fr. A second steering mechanism portion 40 for the rear shaft 22 is provided on the left side of the bogie angle interlocking steering cart 10B, and the rear end of the second steering link 43 is connected to the axle box 24rl on the left side of the rear shaft. .

The effects achieved by the first steering mechanism 30 and the second steering mechanism 40 are the same as in the first embodiment. Further, if the steering force can be transmitted to the connected wheel axles, the number and shape of the levers and links constituting the first steering mechanism 30 and the second steering mechanism 40 can be changed as appropriate. This is the same as in the first embodiment.
Therefore, even in this embodiment, the same effect as in the first embodiment can be obtained.

[Confirmation of action and effect]
Next, the effects of the first embodiment and the second embodiment will be described using the results of the comparative test. In the test, the average lateral pressure acting on the wheel of the outer gauge (curve outer track side: left side of the traveling direction) when passing the right curve of R100 was measured.

  5 to 8 are schematic top views showing an example of a bogie-linked steering cart with a different installation position of the steering mechanism portion employed as a comparison target in this test.

  FIG. 5 shows a configuration of a bogie angle-linked steering cart 10C that steers only the rear shaft 22 without steering the front shaft 21. That is, the second steering mechanism sections 40a and 40b act on the left and right axle boxes 24rl and 24rr of the rear shaft 22, respectively. The bogie angle interlocking steering cart 10C is referred to as “rear left shaft / rear shaft right” from the installation position relationship of each steering mechanism.

  FIG. 6 shows the configuration of a bogie angle-linked steering cart 10D that steers only the front shaft 21 without steering the rear shaft 22. That is, the first steering mechanism portions 30a and 30b act on the left and right axle boxes 24fl and 24fr of the front shaft 21, respectively. The bogie angle interlocking steering cart 10D is referred to as “front left side / front right side”.

  FIG. 7 shows a configuration of a bogie angle-linked steering cart 10E in which the first steering mechanism 30 and the second steering mechanism 40 are both provided on the left side of the cart frame 11. That is, the first steering mechanism 30 acts on the left axle box 24fl, and the second steering mechanism 40 acts on the left axle box 24rl on the rear axis. The bogie angle interlocking steering cart 10E is referred to as “front left side / rear left side”.

  FIG. 8 shows a configuration of a bogie angle interlocking steering cart 10F in which the first steering mechanism 30 and the second steering mechanism 40 are both provided on the right side of the cart frame 11. That is, the first steering mechanism 30 acts on the front right axle box 24fr, and the second steering mechanism 40 acts on the rear right axle box 24rr. The bogie angle interlocking steering cart 10E is referred to as “front shaft right side / rear shaft right side”.

  The bogie angle interlocking steering cart 10A of the first embodiment (see FIG. 3) is called “front left side / rear shaft right”, and the bogie angle interlocking steering cart 10B of the second embodiment (see FIG. 4). Is referred to as “front axis right side / rear axis left side”.

  FIG. 9 is a graph showing the test results. The three bar graphs corresponding to each configuration of the bogie angle-linked steering cart are, from left to right: (1) Oblique hatched bar = average lateral pressure at the relaxation curve part of the curve entrance, (2) White bar = circular curve part Average lateral pressure, (3) Cross hatching bar = Average lateral pressure at the relaxation curve portion at the curve exit, respectively. Since it was a right curve passing test, the left side in the traveling direction is the outer gauge side and the right side is the inner gauge side.

  When the front and rear wheel axles are not steered, the average lateral pressure at the circular curve is extremely high when the steering link is not provided. The mean lateral pressure at has decreased to a sufficient value.

Focusing on other configurations with a small number of steering links, it is generally known that higher lateral pressure is more likely to occur on the front axle, so that only the front axle is steered “front left side / front right side” ( The configuration shown in FIG. 6 is considered to produce the best results. However, in actuality, the “front left / rear right” corresponding to the first embodiment and the “front right / rear left” corresponding to the second embodiment are circular curves as compared to the other configurations of FIGS. The effect of reducing the average lateral pressure at the head is high and the results are good. In addition, the average lateral pressure in the relaxation curve portion at the curve exit exhibits the highest reduction effect even including “all steering link equipment” corresponding to the conventional bogie angle interlocking steering cart.
That is, it can be said that the first embodiment and the second embodiment are the most effective configuration of the steering mechanism after “all steering links”.

[Modification]
The embodiment to which the present invention is applied has been described above. However, the applicable form of the present invention is not limited to the above, and additions, changes, and omissions of components are appropriately made without departing from the spirit of the invention. Can do.

  For example, the rigidity of supporting the axle box 24 in the front-rear direction with respect to the carriage frame 11 (front-rear support rigidity) is generally the same specification. However, in the first embodiment and the second embodiment, the front and rear support rigidity of the axle box 24 to which the first steering mechanism portion 30 is connected and the axle box 24 to which the second steering mechanism portion 40 is connected is determined by the steering mechanism. A configuration in which “lower” and “softer” are set than the longitudinal support rigidity of the axle box 24 to which no part is connected is possible.

  Further, the second steering mechanism 40 may be configured such that the second steering lever 42 is omitted.

  More specifically, based on the first embodiment, the bogie angle interlocking steering cart 10G in FIG. 10 is obtained. That is, in the second steering mechanism section 40, the second steering lever 42 is omitted as unnecessary, and the second steering link 43 is connected to the steering beam 14 by the beam connecting shaft 44. In addition, the longitudinal support rigidity of the axle box support portion 26fl with respect to the axle box 24fl on the left side of the front shaft and the axle box support portion 26rr with respect to the axle box 24rr on the right side of the rear shaft is lower than that of the axle box support portions 26fr and 26rl. "Can be" soft ". If the second embodiment is used as a base, the longitudinal support rigidity of the axle box support portions 26fr and 26rl is set to be “lower” and “softer” than the axle box support portions 26fl and 26rr. According to such a configuration, the same effects as those of the first embodiment and the second embodiment can be obtained, and the effect of further improving the steering response can be obtained.

DESCRIPTION OF SYMBOLS 4 ... Track | truck 8 ... Car body 10-10G ... Bogie angle interlocking type steering bogie 11 ... Bogie frame 12 ... Center pin 14 ... Steering beam 16 ... Pillow spring 21 ... Front shaft 22 ... Rear shaft 24 (24fl, 24fr, 24rl, 24rr) ... Shaft box 26 (26fl, 26fr, 26rl, 26rr) ... Shaft box support part 30 (30a, 30b) ... First steering mechanism 31 ... Axis 32 ... First steering lever 33 ... First steering link 34 ... Beam connecting shaft 35 ... lever connecting shaft 36 ... axle box connecting shaft 40 (40a, 40b) ... second steering mechanism 41 ... pivot 42 ... second steering lever 43 ... second steering link 44 ... beam connecting shaft 45 ... lever connecting shaft 46 ... Shaft box connecting shaft

Claims (4)

A first steering mechanism for connecting the steering beam and a front axle box (hereinafter referred to as “front axle box”) to steer the front axle is provided only on one of the right side and the left side in the traveling direction;
A second steering mechanism for connecting the steering beam and a rear axle box (hereinafter referred to as “rear axle box”) to steer the rear axle is provided only on the other side of the right side in the traveling direction and the left side in the traveling direction. The
Bogie angle steering steering cart. One steering mechanism part of the first steering mechanism part and the second steering mechanism part has a configuration in which the steering beam and the front axle box are connected by a steering link via a steering lever. ,
The other steering mechanism part of the first steering mechanism part and the second steering mechanism part has a configuration in which a steering lever is not used and the steering beam and the front axle box are connected by a steering link.
The bogie angle interlocking steering cart according to claim 1. The front axle box is elastically supported so as to be able to move back and forth with respect to the bogie frame, and of the left and right front axle boxes, the side on which the first steering mechanism is provided is not provided. It is supported with lower rigidity than the side,
The bogie angle interlocking steering cart according to claim 1 or 2. The rear axle box is elastically supported so as to be able to be displaced back and forth with respect to the carriage frame, and of the left and right rear axle boxes, the side on which the second steering mechanism is provided is not provided. It is supported with lower rigidity than the side,
The bogie angle interlocking type steering cart according to any one of claims 1 to 3.

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