JP2001130874A - Mounting structure for member for storing hook - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily change a type from either one of a standard specification boom and a hook storing specification boom to the other. SOLUTION: In a pulley storing part 1 for a crane boom, left and right side plates 3 of a tip boom 2 are extended downward, pulleys 4 are arranged at left and right end parts at the inside of the side plates 3, space members 5 are arranged at the inside, a pin 6 is inserted into the pulleys 4 and the space member 5 from the outside of the side plates 3 and a plate 8 is fixedly provided between the left and right side plates 3 on upper sides of the pulleys 4. The plate 8 is provided with a positioning cut-out 9 for performing the positioning of a guide member 10, a bracket 11 is provided at the rear part of the plate 8, and the plate 8 and the bracket 11 are provided with mounting holes 12, 13 for connecting the guide member 10 with bolts 20, 21 which is provided with an insertion cut-out 14 for avoiding an interference with the pin 6 when the pin 6 is inserted into the space members 5 and a projection part 15 fitted into the positioning cut-out 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook storage member mounting structure which allows a hook storage member to be easily attached to and detached from a pulley storage portion of a crane boom.

[0002]

2. Description of the Related Art In a vehicle-mounted crane, a wire rope is hung on a hook to prevent a hanging load hook suspended from the end of a boom from swinging during traveling of the vehicle. However, in recent years, a crane provided with a hook storing mechanism for storing the hook by contacting the hook with the lower surface of the end of the boom has been used.

A crane boom used for a standard crane without a hook storage mechanism (hereinafter referred to as a standard specification boom) and a crane boom used for a hook storage type crane having a hook storage mechanism (hereinafter referred to as a hook storage specification boom) The structure of the pulley storage section at the end of the boom is different from that of the first embodiment. That is, in the standard specification boom, FIG.
As shown in FIGS. 2 to 14, the pulley storage portion 51 extends the left and right side plates 53 of the tip boom 52 downward, and has a pulley 54 at the left and right ends inside the side plate 53 and a space member 5 inside the pulley 54.
5 and the side plate 53 is attached to the pulley 54 and the space member 55.
, And a pin 56 is inserted from outside. Pulley 54
Is rotatably supported by a pin 56 via a bearing 57. Slightly above the pulley 4, a plate 58 is horizontally fixed between the left and right side plates 53.
Has an upper part in contact with the plate 58 so as not to rotate.

[0004] On the other hand, in the hook storage specification boom,
As shown in FIGS. 15 to 17, the pulley storage section 51 extends the left and right side plates 53 of the distal end boom 52 downward, and
A pulley 54 is provided at the left and right ends inside the 3, and a space guide member 60 having a guide portion 59 at the center is disposed in place of the space member 55 inside the pulley 54, and the pulley 54 and the space guide member 60 are provided outside the side plate 53. And a pin 56 is inserted therethrough.

[0005] When the guide portion 59 is wound up to store the hook 61, the hook 61 contacting the lower surface is brought into contact with the hook 61 as shown in FIG.
Guide to a horizontal storage position like. Other configurations are
Same as the standard specification boom. As described above, since the standard specification boom and the hook storage type boom only partially differ in the configuration of the pulley storage section 51, the pin 56 is removed to replace the space member 55 with the space guide member 60. Thus, it is possible to change one of the booms to the other boom.

However, in this replacement work, the pin 56 is pulled out once, the pulley storage portion 51 is disassembled, and then the space member 5 is removed.
5 and the space guide member 60 must be replaced and the pins 56 must be inserted to assemble them, which is troublesome. Therefore, conventionally, in order to quickly respond to both demands of the standard specification boom and the hook storage specification boom. , Both were manufactured and in stock.

[0007]

[Problems to be Solved by the Invention] When each of the standard specification boom and the hook storage specification boom is in stock,
Although any demand can be promptly dealt with, there is a problem that a large space is required for stock keeping and the cost is increased. The present invention solves the above-described problem in a crane boom, and makes it possible to easily change a standard specification boom and a hook storage specification boom from any one of the booms to the other boom, and stock one of the booms. It is an object of the present invention to provide a structure for mounting a hook storage member in a pulley storage section of a crane boom that can quickly respond to any demand.

[0008]

According to the present invention, the left and right side plates of the end boom are extended downward, pulleys are provided at the left and right ends inside the side plates, and a space member is disposed inside the pulleys. In a pulley storage portion of a crane boom into which a pin is inserted from the outside of one of the side plates, a hook notch having an insertion notch for avoiding interference with the pin when inserted into the space member so as to be located in the space member. The above problem is solved by detachably connecting the member to the pulley storage section.

According to the hook storage member mounting structure of the present invention, the standard boom can be changed to the hook storage boom simply by inserting the hook storage member into the space member of the pulley storage section and connecting the same. Further, the hook storage specification boom can be changed to the standard specification boom simply by pulling out the hook storage member from the space member of the pulley storage section.

After the pin is pulled out once and the pulley housing is disassembled, the space member and the space guide member are exchanged, and the troublesome work of inserting and reassembling the pin again is unnecessary. Specification change work between the boom can be performed quickly.

[0011]

FIG. 1 is a front view of a pulley accommodating portion of a standard specification boom according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. FIG. 4 is an explanatory view of the mounting operation of the guide member 10, FIG. 5 is a front view of a pulley storage portion of the hook storage type boom, and FIG.
FIG. 7 is a sectional view taken along line DD of FIG. 6.

As shown in FIGS. 1 to 3, in the standard specification boom, the pulley storage section 1 is provided with a crane boom tip boom 2.
The left and right side plates 3 are extended downward, a pulley 4 is disposed at the left and right ends inside the side plate 3, and a space member 5 is disposed inside the pulley 4. Pins 6 are attached to the pulley 4 and the space member 5 from outside the side plate 3. It is configured to be inserted. The pulley 4 is rotatably supported by a pin 6 via a bearing 7. Slightly above the pulley 4, a plate 8 is horizontally fixed between the left and right side plates 3, and an upper portion of the space member 5 is in contact with the plate 8 so as not to rotate.

When the standard specification boom is changed to the hook storage specification boom shown in FIGS. 5 to 7, the guide member 10 is inserted into the space member 5 as a hook storage member as shown in FIG. Attach to pulley storage unit 1. Therefore, the plate 8 is provided with a positioning notch 9 for positioning the guide member 10. A bracket 11 is provided behind the plate 8, and mounting holes 12 and 13 are provided in a front portion of the plate 8 and the bracket 11.

The guide member 10 has a U for preventing interference with the pin 6 when inserted into the space member 5 from below.
A letter-shaped insertion notch 14 is formed, and a projection 15 that fits into the positioning notch 9 is formed at the upper end.
Further, mounting bolt holes 16 and 17 are provided at front and rear portions of an upper end of the guide member 10, and a guide surface 19 for guiding and storing the hook 18 is provided at a lower end portion.

When the guide member 10 is mounted, the guide member 10 is inserted into the space member 5 from below the pulley housing 1, and the projection 15 is fitted into the positioning notch 9, and bolt holes are formed in the mounting holes 12, 13. 16 and 17 are aligned and connected and fixed with bolts 20 and 21. When storing the hook 18 with the hook storage specification boom, the hook 18 is wound up with a low pressure hoisting force. When the winding is further continued after the hook 18 rises and comes into contact with the guide member 10, the hook 18 comes into contact with the guide surface 19 and moves rearward, and is stored in parallel with the boom 7 as shown in FIG. You.

When changing the hook storage specification boom to the standard specification boom, the bolts 20 and
21 is removed, and the guide member 10 is pulled out from the space member 5 of the pulley storage unit 1. In this manner, the standard specification boom can be changed to the hook retractable boom simply by attaching the guide member 10 with the bolts 20 and 21.
By simply removing the guide member 10 and pulling out the guide member 10 from the space member 5 of the pulley storage unit 1, the hook storage specification boom can be changed to the standard specification boom. Specification change work can be performed promptly.

Therefore, just stocking one boom,
Since it is possible to promptly respond to the demands of both the standard specification boom and the hook storage type boom, it is possible to reduce the stock and reduce the space and cost for storing the stock. FIG.
FIG. 9 is a front view of a pulley accommodating portion of a hook storage specification boom according to another embodiment of the present invention, FIG. 9 is a sectional view taken along line EE of FIG. 8, FIG. 10 is a sectional view taken along line FF of FIG. FIG. 5 is an explanatory view of a mounting operation of a guide rod mounting member.

Here, a guide rod mounting member 30 as a hook storing member is inserted into the space member 5 and mounted on the pulley storage section 1. Guide rod mounting member 30
When the guide rod 31 is pivotally attached to the front lower portion so as to be rotatable rearward and the hook 18 is stored, the hook 1
When the lower end of the guide rod 31 is engaged with the upper end of the guide rod 8 and the winding is further continued, the hook 18 rotates together with the guide rod 31 and moves rearward, so as to be stored parallel to the boom as shown in FIG. It is what was constituted.

Notch for insertion 14, protrusion 15, bolt hole 1
Other configurations such as 6, 17 and the like are the same as those shown in FIGS. 4 to 7, and the standard specification boom can be changed to the hook storage specification boom simply by mounting the guide rod mounting member 30 with the bolts 20, 21. The hook storage specification boom can be changed to the standard specification boom simply by removing the bolts 20 and 21 and pulling out the guide rod attachment member 30 from the space member 5 of the pulley storage unit 1, so that the standard specification boom and the hook storage can be used. Specification change work between the specification boom can be performed promptly.

[0020]

As described above, the hook storage member mounting structure of the present invention enables the standard specification boom and the hook storage specification boom to be easily changed from one boom to the other. Just stocking one boom can quickly respond to any demand.

Therefore, just stocking one boom,
Since it is possible to promptly respond to the demands of both the standard specification boom and the hook storage type boom, it is possible to reduce the stock and reduce the space and cost for storing the stock.

[Brief description of the drawings]

FIG. 1 is a front view of a pulley storage section of a standard specification boom according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is an explanatory diagram of an operation of attaching the guide member 10;

FIG. 5 is a front view of a pulley storage section of the hook storage specification boom.

FIG. 6 is a sectional view taken along line CC of FIG. 5;

FIG. 7 is a sectional view taken along line DD of FIG. 6;

FIG. 8 is a front view of a pulley storage section of a hook storage type boom according to another embodiment of the present invention.

FIG. 9 is a sectional view taken along line EE of FIG. 8;

FIG. 10 is a sectional view taken along line FF of FIG. 9;

FIG. 11 is an explanatory diagram of a mounting operation of a guide rod mounting member.

FIG. 12 is a front view of a pulley storage section of a conventional standard specification boom.

13 is a sectional view taken along line GG of FIG.

FIG. 14 is a sectional view taken along line HH of FIG. 12;

FIG. 15 is a front view of a pulley storage section of a conventional hook storage specification boom.

16 is a sectional view taken along line II of FIG.

FIG. 17 is a sectional view taken along line JJ of FIG. 12;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pulley storage part 2 Tip boom 3 Side plate 4 Pulley 5 Space member 6 Pin 7 Bearing 8 Plate 9 Notch for positioning 10 Guide member 11 Bracket 12 Mounting hole 13 Mounting hole 14 Notch for insertion 15 Projection 16 Bolt hole 17 Bolt hole 18 Hook 19 guide surface 20 bolt 21 bolt 30 guide rod mounting member 31 guide rod

Claims (1)

[Claims] 1. A left and right side plate of a tip end boom is extended downward, a pulley is disposed at left and right ends inside the side plate, and a space member is disposed inside the pulley, and both pulleys and the space member are disposed outside one of the side plates. In the pulley storage section of the crane boom where the pin has been inserted, a hook storage member having an insertion notch for avoiding interference with the pin when inserted into this space member so as to be located in the space member is attached to and detached from the pulley storage section. A hook storage member mounting structure, which is freely connected.