JPH0378360B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a crane hook storage method for storing and fixing the crane hook of a crane loading truck in the front part of the truck body.

(Prior art) As shown in Figure 8, the crane loading truck is
This crane hook has a crane hook 4 suspended by a hanging wire 5 at the tip of a crane boom 6, and the crane hook 4 is stored and fixed in the front part of the truck body so that the crane hook 4 does not swing when the truck is running. A lashing device is provided.

This conventional crane hook lashing device includes a mounting bracket 1 projecting forward from a bumper that is attached to the front of a truck body at a predetermined interval from left to right as shown in FIG. A crane hook 4 is hooked to the intermediate portion of the steel cable 2, and the suspension wire 5 is hoisted up by crane operation, thereby lifting the steel cable 2 and the suspension wire 5 as shown in FIG. The hook 4 is stored and fixed by this tension so that it does not swing.

(Problems to be Solved by the Invention) However, as can be seen from FIG. Since it is impossible for the crane operator to directly see the position of the crane hook 4 from the operating position, an assistant is placed at the front side of the truck, and this assistant 2 and the tension of the lifting wire 5 while signaling the crane operator to perform delicate crane operations.Moreover, if the lifting wire 5 is wound too much due to a mistake in signaling or a mistake in crane operation, There has been a problem that the excessive tension of the steel cables 2 and the hanging wires 5 may deform the vehicle body mounting portion of the steel cable attachment fitting 1, or in severe cases, the attachment fitting 1 may be torn off.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a method for storing a crane hook that allows a single crane operator to store and secure the crane hook in a predetermined storage position with an appropriate hanging load easily and safely. It is in.

(Means for Solving the Problems) In order to solve the above-mentioned problems of the conventional art and to achieve the above-mentioned object of the present invention, the present invention aims to solve the above-mentioned conventional problems and to achieve the above-mentioned object of the present invention. A mounting bracket or a leaf spring that protrudes in front of the bumper, and an elastic member that is attached between the mounting brackets and is stretched by hoisting a crane hook hooked to the intermediate part, or a leaf spring is attached between the plate spring and the elastic member that is stretched by hoisting the crane hook. The device has a structure that includes a steel cable attached so as to flex, and a wire holder provided on the proximal side of the crane boom so that it can be easily seen by the crane operator, and a crane hook is attached to the elastic member or the steel cable. The hook storage range is defined as the range in which the crane hook position reaches from the minimum storage lifting load position to the maximum storage lifting load position, and that range is defined as the part of the wire that reaches the position of the wire holder. It is determined in advance by attaching a warning sign to the hook, and when the hook is stored and fixed, the hook is hooked to the telescopic member or the steel cable, and the warning sign is moved to the position of the wire holder by winding up the hanging wire. This system is characterized in that the crane operation stops hoisting when this warning sign reaches the position of the wire receiving fitting.

(Function) The crane operator simply watches the warning sign attached to the hanging wire move to the position of the wire holder, and then stops hoisting when the sign reaches the position of the wire holder. With this operation,
The hook can be easily and safely stored and fixed at a predetermined hook storage position predetermined by a warning sign with an appropriate storage hanging load (tension).

(Example) Hereinafter, an example of the present invention will be specifically described with reference to the drawings of FIGS. 1 to 7. First, the structure of the device in this first embodiment is as follows: A pair of bumpers 10a projecting forward are attached to the front part of the truck body 10 by brackets 9 at a predetermined distance from side to side, as shown in FIG. The crane hook 4 is hoisted between the leaf springs 11a, 11b and the leaf springs 11a, 1.
A steel cable 2 is attached as shown in FIG. 4 via shafts 3a and 3b so that the wire 1b is bent, and a wire receiving bracket is attached as shown in FIG. 15
The device structure in the second embodiment includes a bumper 10 attached to the front part of the truck body with a predetermined interval left and right as shown in FIGS. 6 and 7.
a pair of mounting brackets 1a and 1b protruding forward;
Shacks 3a and 3 are connected between these mounting brackets 1a and 1b.
A telescopic member 12 is attached via b and extends by hoisting the crane hook 4 hooked to the intermediate part.
and a wire holder 15 attached to the proximal side of the crane boom 6, as shown in FIG. 1, where it can be easily seen by the crane operator.

Note that the embodiment shown in FIG.
is composed of rubber strings 12a, 12b that connect the hook hook 14 and the shackle 3a, 3b, and in the embodiment shown in FIG. 7, the elastic member 12 connects the hook hook 14 and the shackle 3a, 3b. It is composed of helical springs 12c and 12d.

Thus, the method for storing a crane hook of the present invention is such that the crane hook storing method of the present invention includes
The first crane hook 4 is attached to the net rope 2 that is stretched between
Hook it up as shown in the figure, hoist the hanging wire 5, and place the crane hook 4 at the minimum stored hanging load position b.
The range from which the hook reaches the maximum storage hanging load position c is defined as the hook storage range, and this range is defined as the wire receiving bracket 15.
This is determined in advance by attaching a warning sign E to the wire portion arriving at the position. This determination of the hook storage range based on the sign display including the caution sign D is performed as follows.

That is, the suspension wire 5 is wound up and the leaf spring 1 is
The point at which 1a, 11b begins to bend or the elastic member 1
2 starts to extend as a storage start position a, and at this storage start position a, the winding of the hanging wire 5 is temporarily stopped, and a mark A is placed on the wire part of the hanging wire 5 located in the part of the receiving metal fitting 15. Then, the hanging wire 5 is wound up again, and when the hook 4 reaches the minimum storage hanging load position b, the wire winding operation is stopped again, and at this point of stopping, the wire portion located in the wire receiving fitting 15 is For example, paint yellow paint between B and the mark A (the wire portion corresponding to the movement range from the storage start position a to the minimum storage hanging load position b of the crane hook 4) to alert the crane operator. Next, the hanging wire 5 is hoisted up again, and when the hook 4 reaches the maximum storage hanging load position c, the wire hoisting operation is stopped, and at this point of stopping, the wire receiving bracket is Between the wire part C located at the part 15 and the wire part B which is the end of the caution sign D (wire corresponding to the movement range from the minimum stored hanging load position b to the maximum stored hanging load position c of the crane hook 4) This is done by applying red paint to the area (for example) and using a red band warning sign E to warn the crane operator to stop hoisting.

In this way, the present invention defines the range in which the position of the crane hook 4 reaches from the minimum stored suspension load position b to the maximum stored suspension load position c as the hook storage range, and defines that range as the wire portion that reaches the position of the wire holder 15. This is determined in advance by attaching a warning sign E to the hook 4. When storing and fixing the hook 4, the hook 4 is hooked to the elastic member 12 or the steel cable 2, and by winding up the hanging wire 5, the warning sign E is attached. Be careful when D comes to the position of the wire receiving bracket 15, and stop the crane operation immediately when the warning sign E arrives at the position of the said receiving metal fitting 15, so that the proper stored hanging load position determined within the range of the warning sign E is determined. The hook 4 can be easily and safely stored.

In addition, although the above-mentioned embodiment described the case where a caution sign D to call attention to the crane operator was provided at the wire portion located before the warning sign E, the present invention can be applied even without such a caution sign D. Therefore, the above-mentioned caution sign D is not limited to the gist of the present invention.

(Effects of the Invention) Since the crane hook storage method of the present invention is as described above, a crane operator can easily and safely store and fix the crane hook in a predetermined storage position with an appropriate hanging load. This has the effect of solving the conventional problem of damage to the vehicle body due to excessive winding of the wire.

[Brief explanation of drawings]

Figures 1 to 3 are explanatory diagrams showing the crane hook storage method of the present invention, Figure 4 is a front view showing the structure of the device in which a steel cable is attached between leaf springs, and Figure 5 is the main part of the structure of the device. A side view, FIGS. 6 and 7 are front views showing a device in which elastic members (rubber strings and helical springs) are attached between mounting fittings, FIG. 8 is an explanatory diagram of a conventional crane loading truck, and FIG. 9 FIG. 2 is a front view showing a conventional crane hook securing device. 1a, 1b...Mounting bracket, 2...Steel cable, 4...
Crane hook, 5... Hanging wire, 6... Crane boom, 10... Car body, 10a... Bumper, 11a, 11b... Leaf spring, 12... Elastic member, 12a, 12b... Rubber string, 12c, 12
d... Helical spring, 14... Hook hanging bracket, 1
5... Wire receiving bracket, a... Crane hook hoisting start position, b... Minimum stored hanging load position of the crane hook, c... Maximum stored hanging load position of the crane hook, D... Caution sign, E... Warning sign.

Claims (1)

[Scope of Claims] 1. A mounting bracket or a plate spring that projects forward of the bumper that is attached to the front part of the truck body at a predetermined distance from side to side, and a crane that is attached between the mounting brackets and hooked to the intermediate part. An elastic member that is stretched when the hook is hoisted up, or a steel cable that is attached between the leaf springs so that the leaf spring is bent when the crane hook is hoisted up, and a wire that is provided on the proximal side of the crane boom so that it can be easily seen by the crane operator. A crane hook is hooked to the elastic member or steel cable, and the hanging wire is hoisted to cover a range where the position of the crane hook reaches from the minimum entangled hanging load position to the maximum stored hanging load position. The storing range is determined in advance by attaching a warning sign to the part of the wire that arrives at the position of the wire receiving bracket, and when storing and fixing the hook,
Hook the hook onto the telescopic member or steel cable, and as the hanging wire is hoisted, confirm that the warning sign moves to the position of the wire holder, and when the warning sign reaches the position of the wire holder, remove the crane. A method for storing a crane hook of a crane loading truck, characterized by hoisting and stopping the operation. 2. The warning sign is displayed as a colored band such as red to warn the crane operator to stop hoisting, and the wire section located in front of this warning sign indicates the range of movement of the crane hook from the start position of the crane hook to the minimum retracted lifting load position. Caution signs are installed with colored bands such as yellow to alert crane operators.
Be careful when this warning sign comes to the position of the wire holder, and stop crane operation immediately when the warning sign arrives at the position of the wire holder. A method for storing a crane hook of a crane loading truck according to claim 1, characterized in that the hook is stored.