JP2013212893A - Mooring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mooring device capable of improving a braking force when a traveling body is moored and maintaining the braking force even if loss of power occurs, in the mooring device for mooring the traveling body such as a crane traveling along a rail.SOLUTION: A mooring device 1 is used for mooring a traveling body such as a crane traveling along a rail 20. The mooring device 1 includes: a wheel collision part 2 facing a movement direction of a wheel of the traveling body; and an inclination part 3 which extends from the wheel collision part 2 toward a lower side of the wheel and to which the wheel can run on.

Description

  The present invention relates to a mooring device that prevents a traveling body such as a quay crane or a portal crane traveling on a rail from running away.

  At present, quay cranes and portal cranes are used in container terminals. Some of these cranes have a configuration (rail mount type) that travels on rails laid on a container terminal. This rail-mounted crane may be unintentionally run (hereinafter referred to as a runaway) when pushed by a strong wind such as when a typhoon occurs. In order to prevent the crane from running away, the conventional crane has a configuration in which a brake such as a rail clamp is installed in the vicinity of the wheel of the traveling device (see, for example, Patent Document 1 or 2).

  Patent Document 1 discloses a configuration of a rail clamp that sandwiches a rail from the left and right directions with a brake shoe to prevent the crane from running away. Further, Patent Document 2 discloses a configuration of a rail clamp that prevents a crane from running away by pressing a brake shoe against the rail upper surface. All of the above-mentioned rail clamps prevent the crane from running away due to the frictional force between the rail surface (upper surface or side surface) and the brake shoe. With this configuration, it was possible to prevent the crane from running away to some extent.

  However, the above-described rail clamp has several problems. First, even if the crane is equipped with a rail clamp or a rail brake having a necessary and sufficient capacity, a runaway accident has actually occurred due to a gust of wind. For this reason, operators are demanding further measures to prevent runaway in order to enhance safety.

  Secondly, it is conceivable to increase the number of rail clamps installed in order to increase the force for mooring the crane. However, in this case, there is a problem that the manufacturing cost of the crane increases.

  Thirdly, in the already operated crane, if you want to add more powerful anti-runaway measures, it is necessary to add a rail clamp to the crane or replace it with a stronger rail clamp. Has the problem of increasing.

Japanese Patent Laid-Open No. 06-72690 JP 2010-247944 A

  The present invention has been made in view of the above problems, and an object of the present invention is to improve a braking force when mooring a traveling body in a mooring apparatus for mooring a traveling body such as a crane traveling along a rail. An object of the present invention is to provide a mooring device that can maintain this braking force even when the power source is lost.

The mooring device according to the present invention for achieving the above object is a mooring device for mooring a traveling body traveling along a rail, wherein the mooring device faces a moving direction of a wheel of the traveling body. And an inclined portion that extends from the wheel collision portion toward the lower side of the wheel and on which the wheel can ride.

  With this configuration, the braking force of the mooring device can be improved. This is because the wheel of the traveling body (for example, quay crane or portal crane) rides on the inclined part of the mooring device, the weight of the traveling body acts vertically downward of the mooring device, and the frictional force between the mooring device and the rail is greatly increased. It is because it can be increased. Therefore, it is possible to prevent the mooring device from being slid on the rail by being pushed by the wheel.

  Further, even when the power source is lost, the braking force of the mooring device can be maintained. This is because the mooring device has a configuration in which the weight of the traveling body is converted into a braking force that prevents the traveling body from running away, and a power source or the like becomes unnecessary.

  Furthermore, this mooring device can be employed without significantly increasing the manufacturing cost of the traveling body. This is because the mooring device has a high braking force and can sufficiently prevent the traveling body from running away even when the number of installed devices is small. In addition, the mooring device is a simple structure that does not have a complicated structure such as a control mechanism.

  Said mooring apparatus WHEREIN: The unevenness | corrugation was formed in the contact surface which is the lower surface of the said mooring apparatus and contacts with the said rail. With this configuration, the braking force of the mooring device can be further improved. This is because the coefficient of friction between the mooring device and the rail increases.

  According to the mooring device of the present invention, in a mooring device for mooring a traveling body such as a crane traveling along a rail, even when the braking force for mooring the traveling body is improved and the power source is lost. A mooring device that can maintain this braking force can be provided.

It is the figure which showed the outline of the mooring apparatus of embodiment which concerns on this invention. It is the figure which showed the use condition of the mooring apparatus of embodiment which concerns on this invention. It is the figure which showed the principle of the action | operation of the mooring apparatus of embodiment which concerns on this invention. It is the figure which showed the outline of the mooring apparatus of different embodiment which concerns on this invention.

  Hereinafter, mooring devices according to embodiments of the present invention will be described with reference to the drawings. In FIG. 1, the outline of a structure of the mooring apparatus 1 of embodiment which concerns on this invention is shown. The mooring device 1 includes a wheel collision part 2 that faces a moving direction of a wheel of a traveling body (for example, a crane), and an inclined part 3 that extends from the wheel collision part 2 toward the lower side of the wheel and on which the wheel can ride. have. Further, a back surface 4 is provided on the opposite side of the wheel collision portion 2. Further, a guide 5 for installing the mooring device 1 on the rail 20 is provided at the lower part of the back surface 4. The guide 5 is configured to restrain movement in the transverse direction x with respect to the rail 20 of the mooring device.

  In addition, 6 has shown the contact surface 6 with which the mooring apparatus 1 and the rail 20 contact. D1 indicates the guide width (the length of the gap in the horizontal direction x of the guide 5), and d2 indicates the width of the inclined portion 3 (the length in the horizontal direction x). The guide width d1 is longer than the width of the rail 20 (the length in the transverse direction x). Further, the width d2 of the inclined portion 3 is shorter than the length between the wheel flanges (also referred to as the shaft length).

In FIG. 2, the use state which installed the mooring apparatus 1 with respect to a rail mount type quay crane is shown. The crane traveling device 21 has a plurality of wheels 15. The mooring device 1 is preferably used by installing any one of the plurality of wheels 15 on both sides (before and after the traveling direction y). A plurality of wheels 15 may be arranged between the two mooring devices 1.

  In FIG. 3, the side view of the mooring apparatus 1 at the time of use is shown. Here, the wheel 15 traveling on the rail 20 has a shaft portion 16 and two flange portions 17 disposed on both sides of the shaft portion 16. Further, the shaft portion 16 is in contact with the upper surface of the rail 20, and the flange portion 17 is configured to be in contact with the side surface of the rail 20.

  Next, the principle of operation of the mooring device 1 will be described. When a strong wind or the like occurs, the mooring device 1 is first installed on the rail 20. At this time, it is desirable that the tip portion of the inclined portion 3 of the mooring device 1 is disposed so as to approach the shaft portion 16 of the wheel 15 of the traveling body. More preferably, the tip portion of the inclined portion 3 is arranged in contact with the shaft portion 16 (left side in FIG. 3). When the traveling body moves by being pushed by a strong wind or the like, the shaft portion 16 ascends the inclined portion 3, and the flange portion 17 of the wheel 15 collides with the wheel collision portion 2 and stops (right side in FIG. 3). At this time, the weight of the crane (running body) acts downward on the mooring device 1 as indicated by the white arrow.

  With the above configuration, the following operational effects can be obtained. First, the braking force of the mooring device 1 can be improved. This is because the wheels of the traveling body ride on the inclined portion 3 of the mooring device 1, the weight of the traveling body acts vertically downward of the mooring device 1, and the frictional force between the mooring device 1 and the rail 20 is greatly increased. It is because it can do. This is because the vertical load is a part of the weight of the traveling body such as a crane among the frictional force expressed by the product of the vertical load acting on the contact surface 6 (see FIG. 1) of the mooring device 1 and the friction coefficient. . Therefore, the braking force of the mooring device 1 can be greatly increased, and the mooring device 1 can be prevented from moving on the rail 20 by being pushed by the wheels 15. For example, the weight of the traveling body is about 300 t for a portal crane and about 1000 t for a quay crane.

  Secondly, the braking force of the mooring device 1 can be maintained even when the power source is lost. This is because the mooring device 1 has a configuration that converts the weight of the traveling body into a braking force that prevents the traveling body from running away, and external power such as a power source is not necessary.

  Thirdly, the mooring device 1 can be employed without significantly increasing the manufacturing cost of a traveling body such as a crane. This is because the mooring device 1 has a high braking force and can sufficiently prevent a traveling body such as a crane from running away even if the number of installed devices is small. Specifically, it may be installed at least one before and after the traveling direction y of the wheel 15 of the traveling device 21. Moreover, since the mooring apparatus 1 is a simple structure which does not have complicated structures, such as a control mechanism, manufacturing cost can be suppressed.

  The mooring device 1 can be used regardless of the position of the traveling body such as a crane on the rail 20. Therefore, the mooring device 1 can be installed without requiring movement and operation of the crane or the like even when traveling of the crane or the like is difficult due to generation of strong wind.

  FIG. 4 shows an outline of a mooring device 1A according to another embodiment of the present invention. The mooring device 1 </ b> A has irregularities on the contact surface 6 </ b> A that contacts the rail 20. The irregularities can be arbitrarily determined as long as the friction coefficient can be increased.

With this configuration, the braking force of the mooring device 1A can be further improved. This is because the friction coefficient can be increased in the friction force represented by the product of the vertical load acting on the contact surface 6A of the mooring device 1 and the friction coefficient. In addition, as shown in FIG. 4, this unevenness | corrugation can be formed in the groove shape connected to the width direction (transverse direction x) of 6 A of contact surfaces, for example. With this configuration, even when the rail 20 is wet due to rain or the like due to a typhoon, the water on the rail 20 can be scraped out and the friction coefficient of the contact surface 6A can be maintained.

  As described above, the mooring device 1 of the present invention can greatly improve the braking force and prevent the traveling body such as a crane from running away. The mooring device 1 can be used for any traveling body that travels on the rail 20. For example, it can be used for a cart traveling on the rail 20 or a train.

DESCRIPTION OF SYMBOLS 1 Mooring apparatus 2 Wheel collision part 3 Inclination part 4 Back surface 5 Guide 6 Contact surface 15 Wheel 16 Shaft part 17 Flange part 20 Rail

Claims (2)

In a mooring device for mooring a traveling body traveling along a rail,
The mooring device has a wheel collision portion that faces the moving direction of the wheel of the traveling body, and an inclined portion that extends from the wheel collision portion toward the lower side of the wheel and on which the wheel can ride. A mooring device, characterized in that   The mooring device according to claim 1, wherein unevenness is formed on a contact surface that is a lower surface of the mooring device and contacts the rail.

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