JP2006188158A - Friction easing device and friction easing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a friction easing device and a friction easing method, jetting friction easing material when entering a sharp curve, and capable of easing friction resistance between a vehicular wheel and a rail. <P>SOLUTION: The friction easing devices 5, 6 jets the friction easing material C between an inner track side rail 1a and the wheel 4a when vehicles 2A, 2B pass through the sharp curve, thereby easing the friction resistance between those. The friction easing deices 5, 6 are installed so as to correspond to the wheels 4a, 4b of a rear side bogie 4B of the forefront vehicle 2A. When the curve entry of a front side bogie 4A of the forefront vehicle 2A is detected, the friction easing device 5 jets the friction easing material C between the wheel 4a of the rear side bogie 4B of the forefront vehicle 2A and the rail 1a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a frictional relaxation device and a frictional relaxation method that reduce frictional resistance between a wheel and a rail.

  Railroad vehicles travel with a lateral pressure corresponding to the curve-passing performance when passing a sharp curve, and this lateral pressure causes squealing (frictional noise) of the inner and outer gauges of the curve, as well as the inner gauge. This also causes wavy wear on the rail rail top surface. In general, in order to reduce such excessive lateral pressure and wavy wear, a lubricant such as mineral oil or grease is applied to the top surface of the rail on the inner rail side or the wheel tread surface. Mineral oil or grease used for lubrication between the wheel and the rail induces idling or sliding of the wheel because the lubrication effect is excessive. For this reason, in recent years, solid lubricants (solid lubricants) that can ensure a stable coefficient of friction have been used as friction modifiers. Even if such a friction modifier is sprayed on the rail surface as it is, it will be blown off by the wind, so it is sprayed on the rail surface after being dispersed in the solution. For example, a conventional friction modifier injection device includes a tank that stores the friction modifier, an injection device that injects the friction modifier from the tank onto the top surface of the rail, a detection device that detects a sharp curve, and this detection. And a control device that operates the injection device based on the detection result of the device (see, for example, Patent Document 1). Such a conventional friction modifier injection device is installed in the rear vehicle of a train, and when the train passes a sharp curve, the friction modifier is applied from the rear vehicle of the train to the top of the rail on the inner rail side. Is sprayed.

Japanese Patent Laid-Open No. 2001-151110

  The conventional friction modifier injection device injects a friction modifier from the tail vehicle of the preceding train. For this reason, although it is possible to obtain a friction relaxation effect for the following train that passes the sharp curve after the preceding train, there is a problem that the friction relaxation effect cannot be obtained for the preceding train that is injecting the friction modifier. there were.

  An object of the present invention is to provide a friction relaxation device and a friction relaxation method that can reduce friction resistance between a wheel and a rail of a vehicle that enters a sharp curve and injects a friction relaxation material as much as possible. is there.

The present invention solves the above-mentioned problems by the solving means described below.
In addition, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this embodiment.
The invention of claim 1 is a friction relaxation device that reduces the frictional resistance between the wheel and the rail, and includes an injection portion (5d) that injects a friction relaxation material (C) that reduces the frictional resistance, Based on the detection result of the curve detection unit (9) that detects the curve approach of the front vehicle (4A) of the front vehicle (2A), the injection unit is a rear vehicle (2B The friction relaxation device (5, 6) is characterized by injecting the friction relaxation material between the wheel (4a) and the rail (1a).

  According to a second aspect of the present invention, in the friction alleviating device according to the first aspect, the injection unit is based on a rotation angle (θ) in the left-right direction of the front carriage of the leading vehicle detected by the curve detection unit. A friction relieving device that injects a friction relieving material.

  Invention of Claim 3 is a friction relaxation apparatus which relieves the frictional resistance between a wheel and a rail, Comprising: The injection part (5d) which injects the friction relaxation material (C) which relieves the said frictional resistance, The said, The injection unit is configured to detect the front side of the leading vehicle based on the detection result of the lateral pressure detecting unit (14) that detects the lateral pressure (Q) generated between the wheel and the rail of the carriage (4A) on the front side of the leading vehicle. The friction relaxation device is characterized by injecting the friction relaxation agent between a wheel (4a) and a rail (1a) of a carriage (4B) on the rear side of the carriage.

  Invention of Claim 4 is a friction relaxation apparatus which relieves the frictional resistance between a wheel and a rail, Comprising: The injection part (5d) which injects the friction relaxation material (C) which relieves the said frictional resistance, The said, Based on the detection result of the squeak noise detection unit (15) that detects a squeak noise generated when the carriage on the front side of the leading vehicle (4A) enters the curve, the injection unit is located behind the trolley on the front side of the leading vehicle. It is a friction relaxation device characterized by injecting the friction relaxation agent between a wheel (4a) and a rail (1a) of a carriage (4B).

  According to a fifth aspect of the present invention, in the friction alleviating device according to any one of the first to fourth aspects, the injection unit is based on a detection result of a speed detection unit (10) that detects a vehicle speed. Thus, the friction relaxation device is characterized in that the friction relaxation material is sprayed with a variable injection amount.

  According to a sixth aspect of the present invention, in the friction alleviating device according to any one of the first to fifth aspects, the injection unit is configured to reduce the friction during a vehicle emergency brake operation, a low speed traveling, or a wiper operation. The friction relaxation device is characterized in that the injection of the material is stopped.

  The invention of claim 7 is a friction mitigation method for mitigating the frictional resistance between the wheel and the rail, and detects the curve approach of the front carriage (4A) of the leading vehicle (2A) to detect the leading vehicle. Friction mitigation method characterized by injecting friction mitigation material (C) for mitigating the frictional resistance between a wheel (4a) and a rail (1a) of a rear bogie (4B) rather than a front bogie. It is.

  According to an eighth aspect of the present invention, in the friction alleviating method according to the seventh aspect, the rotational angle (θ) in the left-right direction of the carriage on the front side of the leading vehicle is detected and the curve approach of the carriage on the front side of the leading vehicle is detected. It is a friction relaxation method characterized by detecting.

  The invention of claim 9 is a friction relaxation method for reducing the frictional resistance between the wheel and the rail, wherein the lateral pressure (Q) generated between the wheel and the rail of the front carriage (2A) of the leading vehicle. Is detected, and the friction relaxation material (C) for reducing the frictional resistance is injected between the wheel (4a) and the rail (1a) of the carriage (2B) on the rear side of the carriage on the front side of the leading vehicle. It is the friction relaxation method characterized by doing.

  The invention of claim 10 is a friction mitigation method for mitigating the frictional resistance between the wheel and the rail, and detects a squeak noise generated when the front carriage (2A) of the leading vehicle enters the curve, In this friction relaxation method, the friction modifier (C) is injected between the wheel (4a) and the rail (1a) of the carriage (2B) on the rear side of the carriage on the front side of the vehicle.

  The invention according to claim 11 is the friction relaxation method according to any one of claims 7 to 10, wherein the injection amount of the friction relaxation material is varied by detecting a vehicle speed. This is a friction relaxation method.

  A twelfth aspect of the present invention is the friction alleviating method according to any one of the seventh to eleventh aspects, wherein the injection of the friction reducing material is stopped when the vehicle is operated in an emergency brake, at a low speed or in a wiper operation. It is the friction relaxation method characterized by doing.

  According to the present invention, the frictional resistance between the wheel and the rail of the vehicle that enters the sharp curve and injects the friction modifier can be reduced as much as possible.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing a state of wheels and rails when a vehicle including a friction alleviating device according to the first embodiment of the present invention passes a sharp curve. FIG. 2 is a front view showing a state of wheels and rails when a vehicle including the friction relaxation device according to the first embodiment of the present invention passes a sharp curve, and FIG. It is a front view which shows the contact state of a rail and a wheel, FIG.2 (B) is a front view which shows the contact state of the rail and wheel on an outer gauge side. FIG. 3 is a perspective view schematically showing the friction alleviating apparatus according to the first embodiment of the present invention. FIG. 4 is a block diagram schematically showing the friction alleviating device according to the first embodiment of the present invention.

  A track 1 shown in FIG. 1 is a path (track) on which the vehicles 2A, 2B,. The track 1 is composed of a pair of rails 1a and 1b for guiding the wheels 4a and 4b. The rail 1a has a steep curve and the rail 1b has a steep curve. As shown in FIG. 2, the rails 1a and 1b include a parietal surface (head upper surface) 1c that directly supports the wheels 4a and 4b, and an inner temporal side surface 1d continuous with the parietal surface 1c. As shown in FIG. 3, the normal force W and the tangential force F act on the contact point S between the rails 1a, 1b and the wheels 4a, 4b, and the proportional coefficient of the tangential force F with respect to the vertical force W (tangential force coefficient (traction Coefficient)) F / W is a friction coefficient, and the maximum value of this friction coefficient is an adhesion coefficient. The lateral pressure Q shown in FIG. 1 is a force acting in the axle direction among forces acting between the rails 1a.

  1 are railway vehicles such as trains and trains, the vehicle 2A is the leading vehicle, and the vehicle 2B is the next vehicle connected next to the leading vehicle. The vehicle 2A includes a vehicle body 3 shown in FIG. 1, carts 4A and 4B, friction relaxation devices 5 and 6, a gas injection unit 7 shown in FIGS. 3 and 4, a conduit 8, and a curve detection unit 9. A speed detection unit 10, an emergency brake operation detection unit 11, a wiper operation detection unit 12, a control device 13 and the like are provided. The vehicle 2B includes a vehicle body 3 shown in FIG. 1 and carts 4A and 4B. The vehicle body 3 is a structure for loading and transporting passengers. The carts 4A and 4B are devices that travel while supporting the vehicle body 3, the cart 4A is a front cart in the traveling direction of the vehicles 2A, 2B,..., And the cart 4B is behind the traveling direction of the vehicles 2A, 2B,. It is a side cart. The carriages 4A and 4B include a pair of wheels 4a and 4b that are in rotational contact with the pair of rails 1a and 1b, respectively, and a towing device 4e that is rotatably connected to the vehicle body 3. As shown in FIG. 2, the wheels 4 a and 4 b include a wheel tread surface 4 c that contacts the top surface 1 c of the rails 1 a and 1 b and receives frictional resistance, and a rail on the outer rail side when the railway vehicle passes a sharp curve. And a flange surface 4d that receives frictional resistance in contact with the inner head side surface 1d of 1b.

  Friction relieving devices 5 and 6 shown in FIG. 1 are devices that relieve the frictional resistance between the rails 1a and 1b and the wheels 4a and 4b. As shown in FIGS. 1, 3 and 4, the friction relaxation devices 5 and 6 reduce the friction between the rails 1 a on the inner track side and the wheels 4 a when the vehicles 2 </ b> A, 2 </ b> B,. The material C is injected to reduce the frictional resistance between them. As shown in FIG. 1, the friction relaxation devices 5 and 6 are installed in correspondence with the wheels 4a and 4b of the rear truck 4B of the leading vehicle 2A, respectively. The friction relaxation devices 5 and 6 have the same structure, and the friction relaxation device 5 side for reducing the frictional resistance between the rail 1a and the wheel 4a will be described below, and corresponds to the portion on the friction relaxation device 5 side. About the part by the side of the friction relaxation apparatus 6, corresponding code | symbol is attached | subjected and detailed description is abbreviate | omitted. As shown in FIGS. 3 and 4, the friction relaxation device 5 includes a pipe line 5 a, a storage device 5 b, a pipe line 5 c, an injection port 5 d, an electromagnetic valve 5 e, and the like.

  The pipe line 5a is a pipe for supplying compressed gas, the upstream side is connected to the pipe line 8, and the downstream side is connected to the storage device 5b. The housing device 5b is a device that houses the friction relaxation material C that relaxes the frictional resistance between the rail 1a and the wheel 4a. As shown in FIG. 4, the storage device 5b includes a storage portion 5f, a pipe line 5g, an orifice 5h, an injection hole 5i, and a suction pipe line 5j. The accommodating portion 5f is a container that accommodates the friction modifier C. The pipe line 5g is a pipe through which the compressed gas flows through the accommodating portion 5f. The upstream side of the pipe line 5g is connected to the pipe line 5a, and the downstream side of the pipe line 5g is connected to the pipe line 5c. . The injection hole 5i is a through hole through which a part of the compressed gas flowing in the pipe line 5g is ejected into the housing portion 5f. The pipe line 5c is a pipe that sends out the friction relaxation material C from the housing portion 5f in order to supply the friction relaxation material C between the rail 1a and the wheel 4a, and the downstream side is connected to the injection port 5d.

  The injection port 5d is a device that injects the friction relaxation material C, and is an injection nozzle that injects the friction relaxation material C toward the inner temporal surface 4d immediately before the contact point S. Based on the detection result of the curve detection unit 9, the injection unit 5 d injects the friction moderating material C between the wheel 4 a of the carriage 4 </ b> B on the rear side of the leading vehicle 2 </ b> A and the rail 1 a. For example, the injection unit 5d injects the friction moderating material C on the basis of the rotational angle θ in the left-right direction of the front carriage 4A of the leading vehicle 2A detected by the curve detection unit 9. The injection unit 5d varies the injection amount of the friction moderating material C based on the detection result of the speed detection unit 10, and also generates friction during emergency braking operation of the vehicles 2A, 2B,. Stop injection of mitigation material C.

  The electromagnetic valve 5e is a pressure adjusting valve that opens and closes the pipe line 5a, and is installed on the upstream side of the orifice 5h. The electromagnetic valve 5e opens and closes the pipe line 5a based on the open / close signal output from the control device 19, and the friction regulator C Variable injection amount.

  The gas injection unit 7 shown in FIGS. 3 and 4 is a device that injects gas, and is a compressor that injects compressed gas such as compressed air into the pipe 8. The pipe 8 is a pipe for supplying compressed gas, the upstream side is connected to the gas injection unit 7, the downstream side is branched into two, and the pipe 5 a on the friction relaxation device 5 side and the friction relaxation device 6 side are branched. Each is connected to the pipeline 6a.

  The curve detection unit 9 is a device that detects the curve approach of the front carriage 4 of the leading vehicle 2A, and detects the rotation angle (yawing angle) θ in the left-right direction of the front carriage 4 of the leading vehicle 2A. The curve detection unit 9 detects, for example, a rotation angle θ when the front carriage 4 of the leading vehicle 2A rotates about the traction device 4e as shown in FIG. 1 using a proximity switch, a displacement sensor, an acceleration sensor, or the like. Then, the steep curve and the direction of the steep curve are detected. The speed detection unit 10 is a device that detects the speed of the vehicles 2A, 2B,..., And is a speed generator that detects the speed of the leading vehicle 2A based on a pulse signal generated by the rotation of the wheels 4a, 4b. .

  The emergency brake operation detection unit 11 is a device that detects the operation of the emergency brake, and is a sensor that detects the operation of the emergency brake device that decelerates and stops the vehicles 2A, 2B,. The wiper operation detection unit 12 is a device that detects the operation of the wiper device, such as a sensor that detects the operation of the wiper device that wipes off rain, snow, mud, and the like adhering to the window glass of the leading vehicle 2A to ensure visibility. It is.

  Based on the detection results of the curve detection unit 9, the speed detection unit 10, the emergency brake operation detection unit 11, and the wiper operation detection unit 12, the control device 13 opens and closes the electromagnetic valves 5e and 6e and the injection operation of the gas injection unit 7. It is a device that controls. When the control device 13 determines that the rotation angle θ exceeds the predetermined angle based on the detection result of the curve detection unit 9 and the vehicle 2A passes through the sharp curve in either the left or right direction, the control device 13 is connected to the solenoid valve 5e. The gas injection unit 7 is operated by opening the path 5a and causing the electromagnetic valve 6e to close the pipe a. For example, when it is determined from the detection result of the curve detection unit 9 that the radius of the inner track of the curve is less than 500 m, the control device 13 opens the conduit 5a to the solenoid valve 5e and closes the conduit a to the solenoid valve 6e. Then, the gas injection unit 7 is operated. For example, when the vehicle 2A, 2B,... Is in the range of 5 to 60 km / h, the control device 13 controls the operation of the solenoid valves 5e and 6e and the gas injection unit 7 regardless of the curve radius, thereby reducing the friction. Material C is jetted. On the other hand, for example, when the vehicle 2A, 2B,... Travels at a high speed exceeding 60 km / h or travels at a low speed below 5 km / h, the control device 13 controls the solenoid valves 5e, 6e and gas. The operation of the injection unit 7 is controlled so that the friction modifier C is not injected. Similarly, when the emergency brake operation detection unit 11 detects the operation of the emergency brake device or when the wiper operation detection unit 12 detects the operation of the wiper device, the control device 13 detects the electromagnetic valves 5e and 6e and the gas injection unit 7. The friction relaxation material C is not jetted by controlling the operation.

  The friction relaxation material C shown in FIG. 4 is a material that reduces frictional resistance. The friction modifier C is composed of, for example, a base material made of a carbon-based material that reduces the friction coefficient within a substantially constant range, and a coating layer made of a hard plating layer such as a nickel plating layer that covers the base material. Yes. The friction modifier C vibrates when the vehicles 2A, 2B,... Travel on the track 1, and the adjacent friction modifiers C in the housing portion 5f shown in FIG. Prevent material wear. When the friction modifier C is injected and collides with the inner temporal side surface 1d and / or the flange surface 4d, these surfaces are roughened by a plating layer to improve the persistence of the substrate.

Next, the operation of the friction alleviating device according to the first embodiment of the present invention will be described.
FIG. 5 is a schematic diagram for explaining the operation of the friction alleviating apparatus according to the first embodiment of the present invention. FIG. 5 (A) shows a state immediately before the leading vehicle enters the sharp curve. (B) shows a state immediately after the leading vehicle injects the friction modifier, and FIG. 5 (C) shows a state after a predetermined time has elapsed since the leading vehicle injects the friction modifier. The thick line part of the rail 1a shown to FIG. 5 (B) (C) is a location where the frictional relaxation material C remains. Hereinafter, as illustrated in FIG. 1, a case where the vehicles 2A, 2B,...

  As shown in FIG. 5A, when vehicles 2A, 2B,... Travel in a straight section and head vehicle 2A enters a sharp curve as shown in FIG. The curve detection unit 9 detects a steep curve and the direction of the steep curve. Then, based on the detection result of the curve detection unit 9, when the control device 13 opens the conduit 5a to the electromagnetic valve 5e and closes the conduit 6a to the electromagnetic valve 6e and operates the gas injection unit 7, the gas injection unit 7 supplies compressed gas to the line 8. As a result, compressed gas flows into the pipe line 5g from the pipe line 5a and passes through the orifice 5h. When high-pressure compressed gas that has passed through the orifice 5h flows through the pipe line 5g, the suction pipe line 5j that opens into the housing part 5f is connected to the pipe line 5g, and therefore the inside of the housing part 5f becomes negative pressure. At the same time, since the high-pressure compressed gas that has passed through the orifice 5h flows into the housing part 5f from the injection hole 5i, the frictional relaxation material C in the storage part 5f is sucked from the suction pipe 5j, and the frictional relaxation material C is compressed. It flows into the pipe line 5c together with the gas and is injected from the injection port 5d.

  For this reason, as shown in FIG. 5B, when the leading vehicle 2A enters a sharp curve, a friction relaxation device is provided between the front wheel 4a and the rail 1a of the rear carriage 4B on the rear side of the leading vehicle 2A. 5 starts the injection of the friction modifier C. As a result, the frictional relaxation material C collides with the inner temporal side surface 1d immediately before the contact point S shown in FIG. 4, roughens the inner temporal side surface 1d, and the frictional relaxation material C adheres to the inner temporal side surface 1d. Next, the frictional relaxation material C is sandwiched between the flange surface 4d and the inner temporal side surface 1d, and the frictional relaxation material C is pressurized between them.

  As shown in FIG. 5 (C), the next vehicles 2B, 2C,... After the leading vehicle 2A sequentially sandwich the friction modifier C between the flange surface 4d and the inner temporal side surface 1d, and between them. The friction modifier C is further pressurized. As a result, since the lateral pressure Q generated between the rail 1a and the wheel 4a shown in FIG. 1 is reduced, excessive frictional resistance generated between the inner head side surface 1d and the flange surface 4d is alleviated, and a sharp curve portion is obtained. The wear of the rail 1a is prevented. In addition, the friction modifier C remains on the inner temporal side surface 1d, and the friction coefficient relaxation function of the friction modifier C continues for a long period of time. After the vehicles 2A, 2B,. In this case, the friction relaxation effect is maintained by the remaining friction relaxation material C. As shown in FIG. 5 (B), the front carriage 2A of the leading vehicle 2A has already entered the sharp curve when the friction relaxation device 5 injects the friction relaxation material C. However, the friction relaxation effect can be obtained by the friction relaxation material C injected by the preceding train that has passed through the sharp curve before the vehicles 2A, 2B,.

The friction relaxation device and the friction relaxation method according to the first embodiment of the present invention have the following effects.
(1) In the first embodiment, based on the detection result of the curve detector 9 that detects the curve approach of the front carriage 4A of the leading vehicle 2A, the wheels 4a of the trailing truck 4B on the leading vehicle 4A. The injection part 5d injects the friction relaxation material C between the rail 1a and the rail 1a. For this reason, compared with the case where the friction modifier is injected from the rear vehicle as in the conventional friction modifier injection device, the vehicles 2A, 2B,. The frictional resistance between the flange surface 4d and the inner temporal side surface 1d can be reduced as much as possible. Moreover, in this 1st Embodiment, the friction relaxation apparatuses 5 and 6 are mounted in the vehicle 2A, and the friction relaxation material C is injected from the vehicle 2A side. For this reason, it is not necessary to install all the friction relaxation devices 5 and 6 on the necessary sharp curve as compared with the case where the friction relaxation material C is injected from the ground side between the rail 1a and the wheel 4a, and the entire system is simplified. The installation cost can be reduced.

(2) In the first embodiment, the injection part 5d injects the friction moderating material C based on the rotation angle θ in the left-right direction of the front carriage 4A of the leading vehicle 2A detected by the curve detection unit 9. For this reason, it is possible to easily detect the approach of the curve of the leading vehicle 2A and quickly inject the friction relaxation material C.

(3) In the first embodiment, based on the detection result of the speed detection unit 10 that detects the speed of the vehicles 2A, 2B,. For this reason, the effect of friction relaxation can be adjusted by changing the injection amount of the friction relaxation material C in accordance with the traveling speed of the vehicles 2A, 2B,.

(4) In the first embodiment, the injection unit 5d stops the injection of the friction moderating material C when the emergency braking of the vehicles 2A, 2B,. For this reason, it is possible to prevent the frictional relaxation material C from being injected during operation of the emergency brake device and extending the distance until the vehicles 2A, 2B,. Also, the friction modifier C is injected during low-speed traveling that can be easily stopped by the brake device, or the friction modifier C is injected in the rain when the wiper device is operated such that the lateral pressure Q is reduced. It is possible to prevent the friction relaxation material C from being wasted.

(Second Embodiment)
FIG. 6 is a perspective view schematically showing a friction alleviating apparatus according to the second embodiment of the present invention. FIG. 7 is a block diagram schematically showing a friction alleviating apparatus according to the second embodiment of the present invention. In the following, the same parts as those shown in FIGS. 1 to 5 are denoted by the same reference numerals and detailed description thereof is omitted.

  The lateral pressure detector 14 shown in FIGS. 6 and 7 is a device that detects the lateral pressure Q generated between the rail 1a of the carriage 4A on the front side of the leading vehicle 2A and the wheels 4a. The lateral pressure detector 14 is, for example, a lateral pressure measuring device that measures a lateral pressure Q by attaching a strain gauge to the wheels 4a and 4b and detecting a load based on an output signal from the strain gauge. Based on the detection result of the lateral pressure detector 14, the injector 5 d injects the friction modifier C between the wheel 4 a of the rear carriage 4 </ b> B and the rail 1 a on the leading vehicle 2 </ b> A. The injection unit 5d varies the injection amount of the friction relaxation material C based on the detection result of the speed detection unit 10. For example, when the control device 13 determines that the lateral pressure Q detected by the lateral pressure detection unit 14 is larger than a predetermined value, the control valve 13 opens the pipe 5a in the electromagnetic valve 5e and closes the pipe a in the electromagnetic valve 6e. The gas injection unit 7 is operated.

This second embodiment has the following effects in addition to the effects of the first embodiment.
In the second embodiment, the friction modifier C is based on the detection result of the lateral pressure detection unit 14 that detects the lateral pressure Q generated between the rail 1a and the wheel 4a of the front carriage 4A of the leading vehicle 2A. Is injected by the injection unit 5d. For this reason, since the lateral pressure Q generated when passing through the sharp curve can be accurately measured, the frictional resistance is sufficiently obtained by applying a lubricant such as oil or grease or by injecting the friction modifier C. The frictional relaxation material C can be prevented from being wasted and consumed in a relaxed steep curve.

(Third embodiment)
FIG. 8 is a perspective view schematically showing a friction alleviating apparatus according to the third embodiment of the present invention. FIG. 9 is a block diagram schematically showing a friction alleviating apparatus according to the third embodiment of the present invention.
The squeak noise detection unit 15 shown in FIGS. 8 and 9 is a device that detects a squeak noise that is generated when the vehicle 4A on the front side of the leading vehicle 2A enters the curve. Here, the squeak noise (squeak noise) means that the slip (lateral creep force) of the wheel 4a acting in a direction perpendicular to the rail 1a when the leading vehicle 2A passes the curve exceeds a predetermined magnitude. And the natural vibration frequency of the wheel 4a itself is greatly amplified to generate frictional vibration sound caused by self-excited vibration. The squeak detection unit 15 includes, for example, a microphone that measures noise and a signal processing circuit that processes an output signal of the microphone and extracts a signal component of squeal. Based on the detection result of the squeak noise detection unit 15, the injection unit 5 d injects the friction relaxation material C between the wheel 4 a of the rear carriage 4 </ b> B and the rail 1 a of the leading vehicle 2 </ b> A. The injection unit 5d varies the injection amount of the friction relaxation material C based on the detection result of the speed detection unit 10. For example, when the control device 13 determines that the level of the crisp sound detected by the crisp sound detector 15 is higher than a predetermined value, the control device 13 causes the electromagnetic valve 5e to open the conduit 5a and the electromagnetic valve 6e to close the conduit a. Then, the gas injection unit 7 is operated.

The third embodiment has the following effects in addition to the effects of the first and second embodiments.
In the third embodiment, based on the detection result of the squeak noise detection unit 15 that detects a squeak noise that is generated when the trolley 4A on the front side of the leading vehicle 2A enters the curve, the front trolley 4A of the leading vehicle 2A Also, the injection part 5d injects the friction modifier C between the wheel 4a of the rear carriage 4B and the rail 1a. For this reason, it is possible to measure the squeak noise generated when passing through a sharp curve and to quickly inject the friction modifier C.

The present invention is not limited to the embodiment described above, and various modifications or changes can be made as described below, and these are also within the scope of the present invention.
(1) In this embodiment, the railway wheel and the rail for rail have been described as examples, but the present invention also applies to other railway members that receive frictional resistance due to the relative motion between the contact surface and the contacted surface. Can be applied. Moreover, in this embodiment, although the case where the friction relaxation material C was injected between the rail 1b and the wheel 4b and the friction relaxation material C was adhered to the inner temporal side surface 1d was described as an example, the inner temporal side surface was described. The friction modifier C can be attached to both 1d and the flange surface 4d or only to the flange surface 4d.

(2) In this embodiment, the friction modifier C is injected between the front wheel 4a and the rail 1a of the carriage 4B on the rear side of the leading vehicle 2A. However, the present invention is not limited to this. For example, the friction relaxation material C is injected between the rails 1a and wheels 4a of the next vehicles 2B,... Of the next vehicle 2B,... After the first vehicle 2A, or the rear vehicle 4B of the rear vehicle 4A. It is also possible to inject the friction modifier C between the rear wheel 4a and the rail 1a. In this embodiment, the case where the rotation angle θ of the carriage 4A is detected by a proximity sensor or the like has been described as an example. However, the rotation angle θ of the carriage 4A can be mechanically detected.

(3) In this embodiment, the case where the vehicles 2A, 2B,... Pass the sharp curve of the main line or the branch line has been described as an example, but the vehicles 2A, 2B,. The present invention can be applied to cases. In the second embodiment, the case where the curve detection unit 9 is replaced with the lateral pressure detection unit 14 has been described as an example. However, the curve detection unit 9 and the lateral pressure detection unit 14 coexist and both are arbitrarily set. It can also be configured to be selectable.

It is a top view which shows the state of a wheel and a rail when a vehicle provided with the friction relaxation apparatus which concerns on 1st Embodiment of this invention passes a sharp curve. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows the state of a wheel and a rail when a vehicle provided with the friction relaxation apparatus which concerns on 1st Embodiment of this invention passes a sharp curve, (A) is a contact with the rail and wheel on an inner track side. It is a front view which shows a state, (B) is a front view which shows the contact state of the rail and wheel on an outer track side. 1 is a perspective view schematically showing a friction relaxation device according to a first embodiment of the present invention. It is a lineblock diagram showing roughly the friction mitigation device concerning a 1st embodiment of this invention. It is a schematic diagram for demonstrating operation | movement of the friction relaxation apparatus which concerns on 1st Embodiment of this invention, (A) shows the state immediately before a leading vehicle approachs a sharp curve, (B) is a leading vehicle friction. A state immediately after the moderation material is injected is shown, and (C) shows a state after a predetermined time has elapsed since the leading vehicle injects the friction moderation material. It is a perspective view which shows roughly the friction relaxation apparatus which concerns on 2nd Embodiment of this invention. It is a block diagram which shows schematically the friction relaxation apparatus which concerns on 2nd Embodiment of this invention. It is a perspective view which shows roughly the friction relaxation apparatus which concerns on 3rd Embodiment of this invention. It is a block diagram which shows schematically the friction relaxation apparatus which concerns on 3rd Embodiment of this invention.

Explanation of symbols

1 track 1a rail (inner gauge)
1b rail (outer gauge)
1c Rail top surface 1d Inner head side surface 2A Vehicle (first vehicle)
2B, 2C, ... Vehicle (next vehicle)
4A cart (front cart)
4B cart (rear cart)
4a, 4b Wheel 4c Wheel tread 4d Flange surface 5, 6 Friction mitigation device 5a Pipe line 5b Storage device 5c Pipe line (delivery route)
5d Injection port 5e Solenoid valve 5f Accommodating part 5g Pipe line 5h Orifice 5i Injection hole 5j Suction pipe 7 Gas injection part 8 Pipe line 9 Curve detection part 10 Speed detection part 11 Emergency brake operation detection part 12 Wiper operation detection part 13 Control device 14 lateral pressure detector 15 crisp sound detector C friction modifier Q lateral pressure θ rotation angle

Claims (12)

A friction relaxation device that reduces frictional resistance between a wheel and a rail,
An injection unit that injects a friction relaxation material that reduces the frictional resistance;
Based on the detection result of the curve detection unit for detecting the curve approach of the front carriage of the front vehicle, the injection section is configured to apply the friction between the wheel and the rail of the rear carriage relative to the front carriage of the front vehicle. Injecting a relaxation material,
Friction relaxation device characterized by. The friction alleviating device according to claim 1,
The injection unit injects the friction relaxation material based on a rotation angle in a left-right direction of a carriage on the front side of the leading vehicle detected by the curve detection unit;
Friction relaxation device characterized by. A friction relaxation device that reduces frictional resistance between a wheel and a rail,
An injection unit that injects a friction relaxation material that reduces the frictional resistance;
The injection unit is based on a detection result of a lateral pressure detection unit that detects a lateral pressure generated between a wheel and a rail of the front vehicle of the front vehicle, and is a rear vehicle relative to the front vehicle of the front vehicle. Injecting the friction modifier between the wheel and the rail of
Friction relaxation device characterized by. A friction relaxation device that reduces frictional resistance between a wheel and a rail,
An injection unit that injects a friction relaxation material that reduces the frictional resistance;
Based on the detection result of the squeak noise detection unit that detects a squeak noise that occurs when the front truck of the front vehicle enters the curve, the injection unit is configured such that the wheels and rails of the rear truck with respect to the front truck of the front vehicle Spraying the friction modifier between
Friction relaxation device characterized by. In the friction relaxation device according to any one of claims 1 to 4,
The injection unit is configured to vary and inject an injection amount of the friction relaxation material based on a detection result of a speed detection unit that detects a vehicle speed;
Friction relaxation device characterized by. In the friction relaxation device according to any one of claims 1 to 5,
The injection unit is configured to stop the injection of the friction modifier at the time of emergency brake operation of the vehicle, at the time of low speed traveling or at the time of wiper operation;
Friction relaxation device characterized by. A friction relaxation method for reducing frictional resistance between a wheel and a rail,
Detecting a curve approach of the front carriage of the leading vehicle, and injecting a friction relaxation material that relaxes the frictional resistance between the wheel and the rail of the rear carriage relative to the front carriage of the leading vehicle;
Friction relaxation method characterized by. In the friction relaxation method according to claim 7,
Detecting the rotation angle in the left-right direction of the carriage on the front side of the leading vehicle, and detecting the curve approach of the carriage on the front side of the leading vehicle;
Friction relaxation method characterized by. A friction relaxation method for reducing frictional resistance between a wheel and a rail,
By detecting the lateral pressure generated between the front wheel and the rail of the front vehicle, the frictional resistance is reduced between the rear wheel and the rail of the front vehicle. Spraying friction modifiers,
Friction relaxation method characterized by. A friction relaxation method for reducing frictional resistance between a wheel and a rail,
Detecting a crisp sound generated when the front truck of the leading vehicle enters the curve, and injecting the friction modifier between the wheel and the rail of the rear truck with respect to the front truck of the leading vehicle;
Friction relaxation method characterized by. In the friction relaxation method according to any one of claims 7 to 10,
Detecting the speed of the vehicle to vary the injection amount of the friction modifier,
Friction relaxation method characterized by. In the friction relaxation method according to any one of claims 7 to 11,
Stop the injection of the friction modifier when the vehicle emergency brake is activated, when driving at low speed or when the wiper is operating,
Friction relaxation method characterized by.

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