TW202130573A - A rail braking system for track traveling machine - Google Patents

Abstract

The present invention comprises: a hydraulic cylinder 41; a hydraulic unit 42; a rail clamp open/close detector 60 that detects the operating state of a rail clamp that grips the rail 4; a travel brake open/close detector 70 that detects the operating state of a travel brake that is provided in the travel drive motor of a track traveling machine; and a travel speed detector 80 that detects the travel speed of the track traveling machine. The present invention further comprises a simple controller 90 that outputs a control signal 90a to the hydraulic unit 42 on the basis of the operating state of the rail clamp detected by the rail clamp open/close detector 60, the operating state of the travel brake detected by the travel brake open/close detector 70, and the travel speed detected by the travel speed detector 80.

Description

Track brake device for track walking machinery

The present invention relates to the invention of a track brake device for a track-walking machine.

Figure 1 is a drawing showing an example of a container crane as a general rail-mounted machine, where 1 is a container crane, 2 is a harbor equipped with a container crane 1, 3 is the quay wall of the harbor 2, and 4 is the same as Figure 1. The rails of the walking path 3a of the quay wall 3 are laid on the rails of the quay wall 3 in a manner extending in the direction perpendicular to the paper surface.

The supporting leg 6 of the crane body 5 of the aforementioned container crane 1 is equipped with a traveling device 8 having "travel wheels 7 that can roll freely along the rail 4".

The machine room 9 of the aforementioned container crane 1 is provided with a control device 10 for coordinating operation operations.

If the aforementioned container crane 1 is hit by a strong wind during cargo handling, it will violate the wishes of the operator and cannot stop walking, which may cause a runaway.

Therefore, as a device for preventing runaway of the aforementioned rail-mounted machine, conventionally, for example, a rail clamp disclosed in Patent Document 1 has been used. The rail clamp clamp is provided with a pair of left and right clamping rods (a pair), and a slide rail provided at the front end of the clamping rod is formed to clamp both sides of the rail.

In recent years, the existing track-traveling machinery equipped with the aforementioned rail clamps has been further modified with the addition of a "rail brake that operates during a power outage or emergency stop." [Prior Technical Literature] [Patent Literature]

[Patent Document 1] JP 2014-210623 A

[Problem to be solved by invention]

However, in the case of adding a rail brake to an existing rail-traveling machine as described above, the rail brake provided at the lower end of the support foot 6 must be connected to the "control device 10 provided in the machine room 9", However, the control device 10 needs to be greatly modified or re-wired.

Therefore, there are the following problems: the cost of reconstruction and wiring of the aforementioned control device 10 is greatly increased, and the construction period is prolonged.

The present invention is an invention developed in view of the above-mentioned traditional problems. The present invention provides a track brake device for track walking machinery that can reduce the cost of modification and wiring of the control device, and can achieve a shortened reconstruction period. [Means to Solve the Problem]

The present invention is a track brake device for a track-mounted machine equipped with the following components: a hydraulic cylinder, which makes the brake pads face in a direction orthogonal to the track, and freely presses and separates the rolling surfaces of the traveling wheels of the track; hydraulic unit, During normal operation, the hydraulic cylinder is actuated and accumulates pressure by introducing the actuating fluid to the hydraulic cylinder. When the power is cut or an emergency stop command is output, the accumulating actuating fluid is directed to the hydraulic cylinder. Inducing the aforementioned brake pads to be pressed on the rolling surfaces of the traveling wheels of the rail, the rail braking device of the rail traveling machinery is provided with: The rail clamp opening and closing detector detects the operating state of the rail clamp used to hold the aforementioned rail; The travel brake opening and closing detector detects the operating state of the travel brake, which is installed in the travel drive motor of the aforementioned track-traveling machinery; The walking speed detector detects the walking speed of the aforementioned orbital walking machinery; Simple controller based on "the operating state of the rail clamp detected by the aforementioned rail clamp opening and closing detector", "the operating state of the walking brake detected by the aforementioned walking brake opening and closing detector", "from the aforementioned walking speed The walking speed detected by the detector" outputs a control signal to the aforementioned hydraulic unit.

In the track brake device of the aforementioned track-walking machine, the aforementioned simple controller may include: The out-of-control detection AND circuit will turn ON when the aforementioned rail clamp is closed, the aforementioned travel brake is closed, and the travel of the aforementioned rail-mounted machinery is detected; The abnormal walking detection AND circuit, which turns ON when the aforementioned rail clamp is turned on, the aforementioned walking brake is turned on, and the walking speed of the aforementioned rail-mounted machinery is detected to be abnormal; OR circuit, when any one of the aforementioned runaway detection AND circuit and abnormal walking detection AND circuit is turned ON, or when the power fails or an emergency stop command has been output, it will be turned ON and the control signal that prompts the aforementioned hydraulic cylinder to operate will be output to The aforementioned hydraulic unit. [Effects of the invention]

According to the track brake device of the track walking machine of the present invention, the cost of modification and wiring of the control device can be reduced, and the so-called excellent effect of "shortening the reconstruction period" can be achieved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Figures 2 to 4 are embodiments of the track brake device of the track-walking machine of the present invention. In the drawings, the parts denoted with the same symbols as those in Figure 1 represent the same components.

In the container crane 1 as the rail-mounted machine shown in FIG. 2, between the supporting legs 6 of the crane body 5, there is provided a lower frame 6a that "extends along the rail 4 in order to connect the supporting legs 6". On the bottom side of the lower frame 6a, a plurality of (two in the example of FIG. 2) traveling devices 8 are provided.

The traveling device 8 includes an upper balance beam 9 a, a middle balance beam 9 b, a lower balance beam 9 c, and traveling wheels 7.

The middle part of the upper balance beam 9a is supported by a rocking pin 10a that "extends in a horizontal direction at right angles to the traveling direction", and is swingably arranged on the bottom surface side of the lower frame 6a. The middle part of the balance beam 9b is supported by a rocking pin 10b that "extends in a horizontal direction at right angles to the traveling direction", and is swingably arranged at both ends of the upper balance beam 9a in the traveling direction. The middle part of the lower balance beam 9c is supported by a rocking pin 10c that "extends in a horizontal direction at right angles to the traveling direction", and is swingably arranged at both ends of the middle balance beam 9b in the traveling direction.

The traveling wheels 7 are arranged at both ends of the lower balance beam 9c in the traveling direction so as to be able to roll freely along the rail 4, and are formed to be rotationally driven by a traveling drive motor 8a. The traveling drive motor 8a is provided with a traveling brake 8b.

In the example shown in FIG. 2, "balance device 9A formed by upper balance beam 9a and middle balance beam 9b" and "balance device 9B formed by middle balance beam 9b and lower balance beam 9c", Form the upper and lower two layers. By the way, the upper balance beam 9a in the aforementioned balance device 9A on the upper level becomes the upper balance beam, and the middle balance beam 9b becomes the lower balance beam. In addition, the middle part balance beam 9b in the aforementioned balance device 9B of the lower layer relatively becomes the upper balance beam, and the lower balance beam 9c becomes the lower balance beam. However, it is also possible to correspond to the scale of the container crane 1 as the track-traveled machine. The balance device 9A forms only one layer, and the lower balance beam (in this case, the middle balance beam 9b) is arranged on the traveling Wheel 7. In addition, the aforementioned balance device may be formed into three or more upper and lower levels, and traveling wheels 7 that can roll freely along the rail 4 are arranged at both ends of the lower balance beam of the lowermost balance device in the traveling direction.

In addition, a rail clip 20 is arranged on the bottom surface side of the lower frame 6a. The rail clamp 20 is the same as the member disclosed in Patent Document 1. It is provided with a pair of left and right clamping rods 21 (a pair). ), hold the two sides of the track 4.

Then, in the case of this embodiment, a rail brake 40 is additionally installed in the container crane 1 described above.

The aforementioned rail brake 40 is attached to the "brake bracket 51 held by the tension rod 50 on the bottom surface side of the lower frame 6a", and as shown in FIG. 3, includes a hydraulic cylinder 41 and a hydraulic unit 42.

The aforementioned hydraulic cylinder 41 includes a hydraulic cylinder body 41a, a hydraulic piston 41b, and a hydraulic piston rod 41c. The hydraulic cylinder body 41a is suspended from the lower part of the brake bracket 51 through a support pin 51a extending in the "horizontal direction orthogonal to the rail 4", and is inserted into the lower part of the brake bracket 51. The inside of the housing 52" is installed downward. The hydraulic piston 41b is slidably inserted into the hydraulic cylinder body 41a, and the interior of the hydraulic cylinder body 41a is divided into a cap side chamber 41d and a rod side chamber 41e. The hydraulic piston rod 41c penetrates the rod side chamber 41e from the hydraulic piston 41b and extends downward. At the lower end of the hydraulic piston rod 41c, the brake pad 41f is connected to the running wheel rolling surface 4a of the rail 4, facing and The direction perpendicular to the rail 4 is formed to be freely pressed and separated. Inside the hydraulic cylinder body 41a (rod side chamber 41e) of the hydraulic cylinder 41, a compression spring S2 as an elastic member S extending in the vertical direction is loaded to spring the hydraulic piston rod 41c in the pull-in direction.

The aforementioned hydraulic unit 42 is formed: during normal operation, the hydraulic cylinder 41 is actuated by introducing the operating fluid to the aforementioned hydraulic cylinder 41 through the pipeline 42a and accumulates pressure, and when the power is cut or an emergency stop command has been output, The pressure-accumulated operating fluid is guided to the hydraulic cylinder 41 to press the brake pad 41f on the running wheel rolling surface 4a of the rail 4.

Moreover, the aforementioned rail brake 40 is provided with a rail clamp opening/closing detector 60, a traveling brake opening/closing detector 70, a traveling speed detector 80, and a simple controller 90.

The aforementioned rail clamp opening/closing detector 60 is a member for detecting the operating state of the rail clamp 20 used to clamp the aforementioned rail 4 and is provided on the rail clamp 20.

The travel brake opening/closing detector 70 is a member that detects the operating state of the travel brake 8b, and is provided in the travel brake 8b.

The traveling speed detector 80 is a member that detects the traveling speed of the container crane 1, and is provided in the traveling drive motor 8a.

The aforementioned simple controller 90 is set at the necessary part of the lower end of the supporting leg 6, as shown in FIG. The operating state of the travel brake 8b detected by the foregoing travel brake opening/closing detector 70", "the travel speed detected by the foregoing travel speed detector 80", outputs a control signal 90a to the foregoing hydraulic unit 42.

In more detail, as shown in FIG. 4, the aforementioned simple controller 90 has: an out-of-control detection AND circuit 91, an abnormal walking detection AND circuit 92, and an OR circuit 93.

The aforementioned out-of-control detection AND circuit 91 is formed: when the aforementioned rail clamp 20 is closed, the aforementioned travel brake 8b is closed, and the travel of the aforementioned container crane 1 is detected, it becomes ON.

The abnormal running detection AND circuit 92 is formed: when the rail clamp 20 is turned on, the running brake 8b is turned on, and the running speed of the container crane 1 is detected to be abnormal, it will be turned ON.

The aforementioned OR circuit 93 is formed: when either of the aforementioned runaway detection AND circuit 91 and abnormal walking detection AND circuit 92 is turned ON, or when power is cut or an emergency stop command has been output, it will be turned ON and will prompt the aforementioned hydraulic cylinder 41 The actuation control signal 90a is output to the aforementioned hydraulic unit 42. The aforementioned emergency stop command is formed: when the power is deliberately cut off in an emergency state, it is issued inside the simple controller 90.

Next, the effect of the above-mentioned embodiment will be explained.

When the container crane 1 is running, the actuation state of the rail clamp 20 used to hold the rail 4 is detected by the rail clamp opening and closing detector 60, and the actuation state of the traveling brake 8b is detected by the traveling brake opening and closing detector 70. The container crane The walking speed of 1 is detected by the walking speed detector 80.

Even if the rail clamp 20 is closed and the travel brake 8b is closed, when the travel of the container crane 1 has been detected, a state of "the container crane 1 that should have stopped is out of control" is formed, so the simple controller 90 is out of control detection The AND circuit 91 is turned ON.

Once the aforementioned out-of-control detection AND circuit 91 is turned ON, the OR circuit 93 is also turned ON to output a control signal 90a for urging the hydraulic cylinder 41 to actuate to the hydraulic unit 42, from which the operating fluid is directed to the hydraulic cylinder 41 through the pipeline 42a. , The hydraulic piston rod 41c of the hydraulic cylinder 41 is driven in the protruding direction, the rail brake 40 is actuated, and the runaway of the container crane 1 is suppressed.

In addition, when the rail clamp 20 is turned on, the travel brake 8b is turned on, and the travel speed of the container crane 1 is detected to be abnormal, the abnormal travel detection AND circuit 92 of the simple controller 90 turns ON.

Once the abnormal walking detection AND circuit 92 is turned ON, the OR circuit 93 is also turned ON to output a control signal 90a for urging the hydraulic cylinder 41 to actuate to the hydraulic unit 42, from which the operating fluid is directed to the hydraulic pressure through the pipeline 42a. The cylinder 41 drives the hydraulic piston rod 41c of the hydraulic cylinder 41 in the protruding direction, and the rail brake 40 is actuated to prevent the container crane 1 from traveling at an abnormal speed.

In addition, when there is a power failure or when an emergency stop command has been output, the OR circuit 93 of the simple controller 90 is turned ON to output a control signal 90a for urging the hydraulic cylinder 41 to operate to the hydraulic unit 42, and pass through the hydraulic unit 42 The pipeline 42a guides the operating fluid to the hydraulic cylinder 41, drives the hydraulic piston rod 41c of the hydraulic cylinder 41 in a protruding direction, and the rail brake 40 is actuated to make the container crane 1 emergency stop.

Once the OR circuit 93 of the aforementioned simple controller 90 is turned off, the control signal 90a for urging the hydraulic cylinder 41 to operate is no longer output to the hydraulic unit 42, and the operating fluid in the cap side chamber 41d of the hydraulic cylinder 41 flows to the hydraulic unit 42 through the pipeline 42a. It is discharged, and the hydraulic piston rod 41c is driven in the pull-in direction by the elastic thrust of the compression spring S2 of the hydraulic cylinder 41, the operation of the rail brake 40 is released, and the container crane 1 is in a movable state.

Here, since the aforementioned simple controller 90 can be arranged at the lower end of the support foot 6, the wiring used to connect the hydraulic unit 42 of the rail brake 40 to the aforementioned simple controller 90 is short, and in addition, it is used to open and close the aforementioned rail clamp. The wiring for connecting the detector 60, the traveling brake opening/closing detector 70 and the traveling speed detector 80 to the aforementioned simple controller 90 does not need to be long.

Therefore, unlike the conventional one, even when the rail brake 40 is added to the existing container crane 1, it is not necessary to connect the rail brake 40 provided at the lower end of the supporting leg 6 to the "control device 10 provided in the machine room 9." There is no need to significantly modify the control device 10 or re-pull the wiring.

Therefore, the cost of modification and wiring of the aforementioned control device 10 is almost no, and there is no need to worry about the extension of the construction period.

In this way, the cost of reconstruction and wiring of the control device 10 can be reduced, and the reconstruction period can be shortened.

Then, in the case of this embodiment, the simple controller 90 has: a runaway detection AND circuit 91. When the rail clamp 20 is closed, the travel brake 8b is closed and the rail-mounted machine (container crane 1 ) Is turned ON; abnormal walking detection AND circuit 92, when the rail clamp 20 is turned on, the walking brake 8b is turned on, and it has been detected that the walking speed of the rail-mounted machine (container crane 1) is abnormal, Form ON; OR circuit 93, when either of the aforementioned runaway detection AND circuit 91 and abnormal walking detection AND circuit 92 is turned ON, or when power is out or an emergency stop command has been output, it will be turned ON and will prompt the aforementioned hydraulic cylinder The control signal 90a actuated by 41 is output to the aforementioned hydraulic unit 42. If the above-mentioned structure is formed, it can prevent the rail-mounted machine (container crane 1) from running out of control that should be stopped, or it can prevent the rail-mounted machine (container crane 1) from running at abnormal speeds, or it can reliably perform rail travel Type machinery (container crane 1) emergency stop during power failure or emergency stop command output.

The track brake device of the track walking machine of the present invention is not limited to the above-mentioned embodiments, and various changes can of course be added without departing from the gist of the present invention.

1: Container crane (track walking machinery) 2: Harbor 3: quay wall 3a: walking path 4: track 4a: Rolling surface of traveling wheel 5: Crane body 6: Support feet 6a: Lower frame 7: Walking wheels 8: Walking device 8a: Walking drive motor 8b: Walking brake 9: Mechanical room 9A: Balance device 9B: Balance device 9a: upper balance beam 9b: Middle balance beam 9c: Lower balance beam 10: Control device 10a: rocker pin 10b: Shake pin 10c: Shake pin 20: rail clamp 21: Clamp lever 40: Rail brake 41: hydraulic cylinder 41a: Hydraulic cylinder body 41b: hydraulic piston 41c: hydraulic piston rod 41d: Cap side chamber 41e: Rod side chamber 41f: brake pad 42: Hydraulic unit 42a: plumbing line 50: tension rod 51: Brake bracket 51a: Support pin 52: outer case 60: Rail clamp opening and closing detector 70: Walking brake opening and closing detector 80: walking speed detector 90: Simple Controller 90a: Control signal 91: Out of control detection AND loop 92: Abnormal walking detection AND circuit 93: OR loop S: Elastic member S2: Compression spring

[Figure 1]: An overall side view showing an example of a container crane as a rail-mounted machine. [Fig. 2]: It is a front view showing an embodiment of the track brake device of the track walking machine of the present invention. [Fig. 3]: is a schematic configuration diagram showing an embodiment of the rail brake device of the rail traveling machine of the present invention. [Fig. 4]: is a control circuit diagram showing an embodiment of the track brake device of the track walking machine of the present invention.

3a: walking path

4: track

4a: Rolling surface of traveling wheel

40: Rail brake

41: Hydraulic cylinder

41a: Hydraulic cylinder body

41b: hydraulic piston

41c: hydraulic piston rod

41d: Cap side chamber

41e: Rod side chamber

41f: Brake pad

42: Hydraulic unit

42a: pipeline

51: Brake bracket

51a: Support pin

52: Shell

60: Rail clamp opening and closing detector

70: Walking brake opening and closing detector

80: walking speed detector

90: Simple Controller

90a: Control signal

S: Elastic member

S2: Compression spring

Claims (2)

A track brake device for a track-traveling machine is provided with: a hydraulic cylinder that presses and separates the brake pads freely in a direction orthogonal to the track relative to the rolling surface of the running wheels of the track; the hydraulic unit, when in normal operation, except By introducing the operating fluid into the hydraulic cylinder to actuate the hydraulic cylinder and accumulate pressure, when power is cut or an emergency stop command has been output, the accumulated operating fluid is directed to the hydraulic cylinder to press the brake pads On the running wheel rolling surface of the track, The track brake device of this track-walking machine includes: The rail clamp opening and closing detector detects the operating state of the rail clamp used to hold the aforementioned rail; The travel brake opening and closing detector detects the operating state of the travel brake, which is installed in the travel drive motor of the aforementioned track-traveling machinery; The walking speed detector detects the walking speed of the aforementioned orbital walking machinery; Simple controller, based on the operating state of the rail clip detected by the aforementioned rail clip opening and closing detector, the operating state of the walking brake detected by the aforementioned walking brake opening and closing detector, and the aforementioned walking speed detector. The measured walking speed outputs a control signal to the aforementioned hydraulic unit. The track brake device of a track-walking machine as described in claim 1, wherein the aforementioned simple controller has: The out-of-control detection AND circuit will be turned ON when the aforementioned rail clamp is closed, the aforementioned travel brake is closed and the travel of the aforementioned rail-mounted machinery has been detected; The abnormal walking detection AND circuit, which turns ON when the aforementioned rail clamp is turned on, the aforementioned walking brake is turned on, and the abnormal walking speed of the aforementioned rail-mounted machinery has been detected; OR circuit, when any one of the aforementioned runaway detection AND circuit and the aforementioned abnormal walking detection AND circuit is turned ON, or when the power fails or an emergency stop command has been output, it will be turned ON and will output the control signal that prompts the aforementioned hydraulic cylinder to operate To the aforementioned hydraulic unit.

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