JP2002211882A - Constraining device of crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a constraining device of a crane enabling an operator only to efficiently perform constraining work in a short time, and dispensing with anchor equipment for performing the constraining work for a plurality of cranes at the same time to reduce the ground facility cost. SOLUTION: This constraining device of a crane is constructed by a bracket 21 fitted to a crane main body 10 and having a guide hole 21h formed in the vertical direction, a sliding pin 22 fitted to be freely elevated along the guide hole 21h, a strut 23, the base end part of which is fitted to the sliding pin 22 and rocked around the base end part within a vertical plane, and a pin elevating and fixing cylinder 24 for elevating the sliding pin 22 and fixing the sliding pin 22. A shoe 27 for sliding on the floor surface is pivoted on the tip of the strut 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a crane restraining device.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional crane restraining device 120. A pair of front and rear brackets 121, 121 are fixed to front and rear ends of a lower beam 112B of the crane body 10, respectively. Each bracket 121 has a wire rope 12
2 and turnbuckle 123 are installed in order. The tip of the turnbuckle 123 is attached to an anchor 124 embedded in the floor F. According to the restraining device 120 having such a structure, it is possible to prevent the crane body 10 from falling or running away due to a storm or the like.

[0003]

However, the conventional crane restraint device 120 has the following problems (i) to (iii). (i) A large number of workers other than the driver are required for restraint work. (ii) Since the restraining load is large, the weight of the equipment such as the wire rope 122 and the turnbuckle 123 is large, and it takes time to perform operations such as positioning. (iii) Above ground anchor equipment cost for the anchor 124 embedded in the floor F is high.

[0004] In view of such circumstances, the present invention can efficiently perform restraint work only by a driver in a short time, can simultaneously perform restraint work of a plurality of cranes, does not require anchor equipment, and requires no ground equipment. It is an object of the present invention to provide a crane restraining device that can be manufactured at low cost.

[0005]

According to a first aspect of the present invention, there is provided a crane restraining device which is attached to a crane main body and has a guide hole formed in a vertical direction, and is attached to the crane body so as to be vertically movable along the guide hole. A sliding pin, a base end attached to the sliding pin, a projecting rod that swings in a vertical plane around the base end, and a vertical movement of the sliding pin, And a pin elevating and fixing means for fixing. The restraining device for the crane according to claim 2 is
A bracket attached to the crane body, an arm having one end attached to the bracket so as to be swingable in a vertical plane, and a base end attached to the other end of the arm, and a vertical plane centered on the base end. And an arm swing fixing means for swinging the arm up and down and for fixing the arm. According to a third aspect of the present invention, there is provided a crane restraining device according to the first or second aspect, further comprising a strut rod swinging means for swinging the strut bar up and down. According to a fourth aspect of the present invention, there is provided the crane restraining apparatus according to the first, second, or third aspect, wherein a shoe for sliding a floor surface is pivotally attached to a tip end of the push rod.

According to the first aspect of the present invention, the following (1) to
According to the procedure (3), the tip of the staying rod can be fixed to the pit provided on the floor in front of and behind the crane body, and the crane body can be restrained. (1) When the base end of the stay rod is raised by the pin elevating and fixing means, the tip of the stay rod is pulled toward the crane main body from the front while swinging the swing rod. (2) When the base end of the staying rod is lowered by the pin lifting / lowering fixing means, the tip of the staying rod protrudes outward while swinging the swinging rod. Can be put in. (3) The sliding pin can be fixed together with the base end of the push rod by the pin elevating and fixing means. For this reason, the end of the stay rod is fixed to the pit, and the base end is fixed to the crane body by the pin elevating and fixing means. Therefore, the crane body can be easily restrained using the pits provided on the floor of the crane body. Therefore, the restraining work can be efficiently performed only by the driver in a short time, the restraining works of a plurality of cranes can be performed at the same time, the anchor equipment is not required, and the ground equipment cost can be reduced. According to the second aspect of the present invention, the tip of the rod is fixed to the pit provided on the front and rear floors of the crane body by the following procedures (1) to (3). Can be restrained. (1) When the base end of the staying rod is raised together with the arm by the arm swing fixing means, the tip of the staying rod is pulled toward the crane body from the front while swinging. (2) When the base end of the stick is swung downward by the arm swing fixing means, the tip of the stick protrudes outward while swinging, so that the stick The tip can be put in the pit. (3) The arm can be fixed together with the base end of the strut rod by the arm swing fixing means. For this reason, the end of the stay rod is fixed to the pit, and the base end is fixed to the crane body by arm swing fixing means. Therefore, only by providing a pit on the floor surface of the crane main body, the tip of the strut can be engaged with the pit. Therefore, the restraint work can be efficiently performed only by the driver in a short time, the restraint work of a plurality of cranes can be performed at the same time, without the need for anchor equipment,
Ground equipment costs can be reduced. According to the third aspect of the present invention, the strut rod can be swung at a desired angle by the strut swing means, so that the work of pulling the tip end of the strut rod toward or away from the crane body is easy. It is. According to the fourth aspect of the present invention, since the shoe is pivotally attached to the tip of the strut, the tip of the strut can be engaged with the pit while sliding the shoe on the floor.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of the crane of the present embodiment. FIG. 2 is a front view of the crane of the present embodiment. As shown in FIGS. 1 and 2, the crane of this embodiment
A pair of front and rear restraint devices 20, 20 are attached to a crane body 10 such as a bridge crane.

First, the crane main body 10 will be described. Reference numeral 11 denotes a leg, and four legs 11 are provided in front, rear, left, and right. Between the upper parts of the left and right legs 11, 11, a horizontal upper girder 12A is attached at both ends. A trolley 13 is attached to the beam 12A so that it can reciprocate left and right along its longitudinal direction. A gripper 14 is suspended from the trolley 13 so as to be able to move up and down. Grabber 14
Is something that can grab and release your luggage. The crane body 10 can be applied not only to a bridge-type crane but also to various cranes such as a tire-mounted crane.

Now, the restraining device 20 which is particularly important in the present invention will be described. FIG. 3 is an explanatory view of the operation of the crane of the present embodiment. As shown in FIGS. 1 to 3, each leg 11 of the crane body 10 is provided with a bracket 21 extending outward. This bracket 21 includes
A guide hole 21h is formed along the vertical direction.
The mounting location of the bracket 21 may be not only the leg 11, but also the traveling device 15, the sill beam 12B, or the like.

A slide pin 22 is mounted on the guide hole 21h of the bracket 21 so as to be vertically movable along the guide hole 21h. A strut 23 is attached to the slide pin 22 so that its base end can swing freely in a vertical plane. Therefore, the strut 23 can be swung about a base end thereof in a vertical plane, and the base end can be moved up and down along the guide hole 21h.

The sliding pin 22 and the strut 23
May have the following configuration. That is, a sliding pin 22 having a circular cross section is attached to the guide hole 21h of the bracket 21 so as to be vertically movable and swingable in a vertical plane. Then, the base end of the rod 23 is fixed to the sliding pin 22. Even with such a structure, the strut 23 can be swung about a base end thereof in a vertical plane, and the base end can be moved up and down along the guide hole 21h.

A tube of a hydraulic pin lifting / lowering fixed cylinder 24 is pivotally connected to the leg 11 of the crane body 10. The tip of the strut of the pin elevating and lowering cylinder 24 is pivotally attached to the base end of the strut 23. Therefore, the base end of the rod 23 can be moved up and down along the guide hole 21h of the bracket 21 by expansion and contraction of the pin elevating and lowering cylinder 24. Further, the sliding pin 22 can be fixed together with the strut 23 by the pin elevating and lowering cylinder 24. This is because it is hydraulic.

A pair of front and rear winches 25 are mounted on the upper part of the crane main body 10. The tip of the wire 26 fed from each winch 25 is attached to the tip of the rod 23. Therefore, the strut 23 can be swung up and down by the winch 25. The winch 25 does not have to be provided. However, when the winch 25 is provided, the strut 23 can be swung at a desired angle by the winch 25. The work of drawing to or moving away from the main body 10 is easy.

A shoe 27 is attached to the tip of the rod 23.
Are pivotally mounted in a vertical plane. Therefore, the shoe 27 can be slid back and forth on the floor F by placing the shoe 27 on the floor F and then raising and lowering the base end of the strut bar 23 up and down.

Next, the operation and effect of the crane of the present embodiment will be described. 3 to 5 are explanatory diagrams of the operation of the crane of the present embodiment. According to the crane of the present embodiment, the crane main body 10 can be restrained by the following procedure. Initial state: As shown in FIG. 3 (I), the pin elevating and lowering fixed cylinder 24 is contracted, and the base end of the stick 23 is positioned at the lower end of the guide hole 21h of the bracket 21.
In addition, the wire 26 is wound up by a winch 25 (not shown), the upright bar 23 is erected, and its tip is positioned vertically upward. A pit 31 is provided on a floor surface F at the front and rear of the crane main body 10.

Procedure 1: As shown in FIG. 4 (II), the wire 26 is paid out by a winch 25 (not shown), and the rod 23 is swung about its base end. The tip is moved downward, and the shoe 27 is
To be placed.

Step 2: As shown in FIG. 4 (III), when the pin elevating and lowering cylinder 24 is extended to raise the base end of the strut bar 23, the strut bar 23 is slightly raised and the shoe is raised. 27 is drawn to the crane body 10 over the pit 31 while sliding on the floor.

Step 3: As shown in FIG. 5 (IV), when the wire 26 is pulled by the winch 25 while the pin elevating and lowering fixed cylinder 24 is contracted, the strut bar 23 falls down and the base end descends. , The tip protrudes outward.
For this reason, the shoe 27 at the tip of the stay bar 23 is
Is engaged with the pit 31 while sliding. For this reason, the crane body 10 can be prevented from falling down by the restraining device 20.

Step 4: As shown in FIG. 5 (V), when the crane body 10 is moved, the shoe 27 can be pulled out of the pit 31 by extending the pin lifting / lowering fixed cylinder 24.

As described above, according to the crane of the present embodiment, no personnel other than the driver is required for the positioning work, the restraining work can be performed efficiently by the driver only in a short time, and the civil works can be economically performed. Can be done. As a result,
In a container terminal having a large number of cranes, a plurality of restraining operations can be performed at the same time, so that even when a typhoon approaches, the restraining operation can be performed in a short time without using any personnel.

Next, a crane according to a second embodiment will be described. FIG. 6 is an explanatory diagram of the crane according to the second embodiment. As shown in the figure, the crane of the second embodiment has a crane body 10 and a restraining device 20B attached thereto.

The restraining device 20B includes a bracket 21B, an arm
22B, a push rod 23, a pin elevating and lowering fixed cylinder 24, and a shoe 27. That is, the restraint device 20B is obtained by replacing the bracket 21 and the sliding pin 22 among the components of the restraint device 20 with the bracket 21B and the arm 22B. Therefore, bracket 21
B and the arm 22B will be described.

A bracket 21B extending outward is attached to the leg 11 of the crane body 10. A guide hole may not be formed in this bracket 21B. The mounting location of the bracket 21B may be not only the leg 11, but also the traveling device 15, the sill beam 12B, or the like.

An arm 22B is attached to the bracket 21B so that one end of the arm 22B can swing freely in a vertical plane. arm
The base end of 22B is attached to the upper end of the rod 23 so as to be swingable in a vertical plane. The strut 23, the pin lifting / lowering fixed cylinder 24, and the shoe 27 are substantially the same as the components of the restraining device 20.

Next, the operation of the crane of the second embodiment
The effect will be described. FIG. 6 is a diagram illustrating the operation of the crane according to the second embodiment. The crane main body 10 can be restrained by the following procedure. Initial state: The pin elevating / fixing cylinder 24 is contracted, and the base end of the strut 23 is located at the lowered position. Further, the wire 26 is wound by a winch 25 (not shown), and the strut bar 23 is erected,
The tip is located vertically above. A pit 31 is provided on the front and rear floor surfaces of the crane main body 10.

Procedure 1: The wire 26 is fed out by a winch 25 (not shown), the strut 23 is swung about its base end, the tip of the strut 23 is moved downward, and the shoe 27 is moved. Is placed on the floor F.

Step 2: When the pin elevating / fixing cylinder 24 is extended to raise the base end of the strut 23, the strut 23 rises slightly, and the shoe 27 slides on the floor while the pit 31 slides. Over the crane body 10.

Step 3: When the wire 26 is pulled by the winch 25 while the pin elevating and lowering cylinder 24 is contracted, the projecting rod 23 falls down while the base end descends, so that the distal end protrudes outward. For this reason, the strut 23
Shoe 27 at the end of pit 3 slides on floor F
Multiply by 1. For this reason, the crane body 10 can be prevented from falling down by the restraining device 20.

Step 4: When moving the crane main body 10, the shoe 27 can be pulled out of the pit 31 by extending the pin lifting / lowering fixed cylinder 24.

As described above, according to the crane of the second embodiment, no staff other than the driver is required for the positioning operation.
The restraint operation can be efficiently performed only by the driver in a short time, and the civil engineering work can be economically performed. As a result,
In a container terminal having a large number of cranes, a plurality of restraining operations can be performed at the same time, so that even when a typhoon approaches, the restraining operation can be performed in a short time without using any personnel.

[0031]

According to the first aspect of the present invention, the following (1) to (5)
According to the procedure (3), the tip of the staying rod can be fixed to the pit provided on the floor in front of and behind the crane body, and the crane body can be restrained. (1) When the base end of the stay rod is raised by the pin elevating and fixing means, the tip of the stay rod is pulled toward the crane main body from the front while swinging the swing rod. (2) When the base end of the staying rod is lowered by the pin lifting / lowering fixing means, the tip of the staying rod protrudes outward while swinging the swinging rod. Can be put in. (3) The sliding pin can be fixed together with the base end of the push rod by the pin elevating and fixing means. For this reason, the end of the stay bar is fixed to the pit, and the base end is fixed to the crane body by the pin elevating and fixing means. Therefore, the crane body can be easily restrained using the pits provided on the floor of the crane body. Therefore, the restraining work can be efficiently performed only by the driver in a short time, the restraining works of a plurality of cranes can be performed at the same time, the anchor equipment is not required, and the ground equipment cost can be reduced. According to the second aspect of the present invention, the tip of the rod is fixed to the pit provided on the front and rear floors of the crane body by the following procedures (1) to (3). Can be restrained. (1) When the base end of the staying rod is raised together with the arm by the arm swing fixing means, the tip of the staying rod is pulled toward the crane body from the front while swinging the swinging rod. (2) When the base end of the stick is swung downward by the arm swing fixing means, the tip of the stick protrudes outward while swinging, so that the stick The tip can be put into the pit. (3) The arm can be fixed together with the base end of the rod by the arm swing fixing means. For this reason, the end of the stay rod is fixed to the pit, and the base end is fixed to the crane body by arm swing fixing means. Therefore, only by providing a pit on the floor surface of the crane main body, the tip of the strut can be engaged with the pit. Therefore, the restraint work can be efficiently performed only by the driver in a short time, the restraint work of a plurality of cranes can be performed at the same time, without the need for anchor equipment,
Ground equipment costs can be reduced. According to the third aspect of the present invention, the strut rod can be swung at a desired angle by the strut swing means, so that the work of pulling the tip end of the strut rod toward or away from the crane body is easy. It is. According to the fourth aspect of the present invention, since the shoe is pivotally attached to the tip of the strut, the tip of the strut can be engaged with the pit while sliding the shoe on the floor.

[Brief description of the drawings]

FIG. 1 is a side view of a crane according to an embodiment.

FIG. 2 is a front view of the crane according to the embodiment.

FIG. 3 is an operation explanatory view of the crane according to the embodiment.

FIG. 4 is an operation explanatory diagram subsequent to FIG. 3;

FIG. 5 is an operation explanatory diagram subsequent to FIG. 4;

FIG. 6 is a diagram illustrating the operation of the crane according to the second embodiment.

FIG. 7 is a side view of a conventional crane restraint device 120.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Crane main body 11 Leg 20 Restraint device 21 Bracket 23 Strut rod 24 Pin elevating fixed cylinder 25 Winch 26 Wire 27 Shoe 31 Pit

Claims (4)

[Claims] 1. A bracket mounted on a crane body and having a guide hole formed in a vertical direction, a slide pin mounted vertically up and down along the guide hole, and a base end attached to the slide pin. A strut rod that swings in a vertical plane around the base end, and a pin elevating and fixing means for vertically moving the sliding pin and fixing the sliding pin. Crane restraint. 2. A bracket attached to the crane main body, an arm having one end attached to the bracket so as to swing in a vertical plane, and a base end attached to the other end of the arm. A crane restraining device, comprising: a strut rod swinging in a vertical plane around the arm; and arm swing fixing means for swinging the arm up and down and fixing the arm. 3. The crane restraining device according to claim 1, further comprising a strut rod swinging means for swinging the strut bar up and down. 4. A crane restraining apparatus according to claim 1, wherein a shoe for sliding on a floor surface is pivotally attached to a tip end of said rod.