JPS5974894A - Method of operating jib in boom with folding jib - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention (Z-Jib operation in a folding jib-1 boom in which the jib attached to the tip of the boot can be stored in a folded state along the boom) It is about the method.

Conventional methods of operating this type of folding jib (on a boom (mainly mounted on a truck crane)) and the jib between its operating position and its stowed position allow the jib to be swung in the opposite direction. Two methods are known: the υ extension tjjtJJifD extension method and the lower JI4b extension method in which the jib is rotated downward.
The problem with the horizontal shooting method is that there must be sufficient free space on the 1ill side at the work site, and the problem with the downward shooting method is that there must be sufficient free space above the work site. However, it could only be used at work sites that were suitable for that model.

The present invention has been made with the aim of improving the above-mentioned problems in booms with folding jibs, and one side of the frame for the jib handle, which is to be attached to the front of the boom tip when in use, is attached to the boom with a folding jib. The frame body is pivotally attached to the side of the tip so that the frame can freely rotate within an angular range of approximately /g00 from the front of the boot\tip to the side, while the lower side of the jib is attached to the frame body. Using a boot with a folding jib, the jib can be rotated downward from the front surface of the frame by an appropriate angle bar [Hy<Hy<], and the jib is attached to the tip of the boom When installing it on the boom or storing it on the side of the boom,
Depending on the situation at the work site, the jib can be rotated along with the frame body in the 1111 direction 4j4, or the front jib can be rotated downward once and the front frame body can be rotated to the boom tip I4i. Depending on the situation at the work site, the jib can be operated using the IiQ 4% extension method or the downward oscillation υ extension method. It is characterized by making it possible to select the type of operation to be carried out, thereby expanding the usable range of equipment such as truck cranes using the folding jib (I). It is.

Hereinafter, the method for operating the jib in the vi folding jib boom of the present invention will be explained in the first place. ! The first embodiment shown in FIGS.

First, to explain the basics (1η configuration) of the folding jib boom of the embodiments shown in Figures 11 to 1, this tJ[
Dadami jib boom A\1, a frame body for a few jibs at the tip of a telescopic boom/ having a proximal boom//, an intermediate boom 7.2 and a tip boot//3! Rotate in an angular range of approximately 7gO° from the front of the boom tip to the 1111 direction.
A rod-type jib 3 is pivotally connected to the frame (f+I1) so as to be freely pivotable downward, thereby forming an 11" frame.

A boom head 20 with l and sheave 3J is attached to the tip of the tip boot \73.

Frame body! The boom head 20 is pivoted at the tip of the boom head 20 and 20α by a pivot shaft /'1.7'l. That is, at the tip of one side surface 20a of the boom head 20, two sets of upper and lower brackets /l/-αt/ga are formed with appropriate intervals in the vertical direction, making seven sets of two brackets.
, on one side α of the back surface 2, 2 of the other frame body, a fitting bracket /l/-h, /4'l) which can be engaged with the bracket /<za, /I/-α is formed. and the browns (/lI-α, /'/-b) on each side have the pivots 11; 1 and 1. , /4/- is pushed through. or,
Boot head, 20 and other f1111 faces, tip of 20b and frame f topping face, 2.2 and others (1"ii fl11
Edge, 7. J b also has brown /3n, /Jα and brown /3h of the same shuttle respectively.

/jh has a shape II-, and as will be described later, when the frame λ is rotated in front of the boom head 2(1), the brackets on each side) (/J゛α and /3b) The two brackets /jα and isb are provided with holes that engage with each other, respectively.
+-bin/3. /J (11th river) is inserted so that the frame body 2 can be fixed by placing it on the front of the boom head 20.

The jib 34211, its base 'AM part 3α, is placed in front of the frame λ, under 2/, +, ijJ (tli1 part), a pair of left and right brackets /Ot α, /Otsu α pivoted /O The jib 3 is pivoted downward with a pivot IIJ and f1H.The jib 3 is supported by a jib support bar ≠ interposed between the tip 3h of the jib 3 and the upper surface of the frame. It is designed to be supported and fixed.This bar has an intermediate link for adjusting the length in the middle part.
When the jib is swung out, the length of the bar can be adjusted to B'4.

The tip of wire rope j is attached to jib 3, but is this wire rope j1 a winch device? j
Horizontal sheave 3/and jib tip 3 bV removed from (1'r'lf indicator tl+ii) to the second part of frame λ
The wire lobe tip 9' and the wire lobe tip 9' are mounted on the lower surface i+IFJi of the tip end of the jib 3. . By the way, the tip of the wire lobe sa+, move jib 3 to the position where it will be swung downwards.", Jib 3 (1[+1 is hooked, but when jib 3 is swung sideways, move I to r, i, H"
, 2 F? At J, as shown by the copper wire jα, the soil is plowed onto the latch piece IIO on the boom side via the roller 3.

Next, as shown in Figures 1 to 11-1], the jib operation ('
To clarify, the jib 3k1. .

('t' When there is sufficient free space on the side at the work site, the tri, tri JM extraction method is used, and when there is sufficient free space on the side at the work site (+7. If there is sufficient free space, f'h is created using the downward swing method.In addition, as shown by the solid line in the jib retracted state li (01, ki / lV?l), the jib 31 is The bracket /g, / installed on the side of the proximal boom //
They are each pinned to I.

Jig 3 combination f! 'I'1JIII: J) When operating according to the unloading method N'1, Fl) In the jib retracted FJ shown in Figure 7, hook the wire lobe tip jα to the latch piece //-0 of j, '46+J boom //. Then, remove jib 3 from the bracket /g, 1g of the base end boom //,
While keeping the boom almost horizontal J゛ river, loosen the wire lobe j (take out the wire lobe 3 t [D] from the winch device 1'!) and omit the jib 3, as shown by 3' and j. Axis with frame/17. , Rotate <Mt upward approximately /00 by 00 with /4/ as the center, complete 1, frame body, non-pivot side bracket on surface 2a /! ;b,/
3h and boom head, 20 non-pivot side bracket/jα
, /3; With eL unengaged, insert pins /J and /j into the engaged brackets /jα and /3b, respectively, and fix the outside of the frame to the front of the boom head 20. Then, you can move the jib 3 to the operating position. Note that the jib 3 is installed in the operating position, and the 1 fire lobe is the sheave in the t; Frame body removed from 3/! Kite sheave 3 installed on the soil surface
It is designed to be mounted on 3. When retracting the jib 3 from the use position, the swinging out operation may be performed in the reverse order.

When operating jib 3 using the downward 1h49 method t↓
In the jib retracted state, the wire lobe tip ja is fixed to the lower surface of the jib 3 near the tip, making it possible to further lengthen the barb, and then the tip boom/3 is slightly extended and the jib 3 is attached to the jib fixing bracket 7g. , remove it from 1g, loosen the wire lobe j, and rotate the jib 3 downward at m2N with respect to the frame Ω, as shown by the chain line 3', until it is in the female-facing state around the pivot/O. let Note that when operating the lower jib 1J149, the telescopic boom is raised by a predetermined angle. When the jib 3 is rotated downward, the guide sheave 3 provided on the two sides of the wire rope j1 frame)
” 2 is multiplied by 1 jilj to IK,
Changing the tit of wire robe j 1. Bamboo must trade Q
",do not have. Next, as shown in Figure 84'y-7, pull the wib S while keeping the jib 3 hanging.
Winch installation ``Win up with 1'') With one hand, turn the frame body by 11 (1/l/, , /q) in the center by 13'l approximately 780° in the 1st direction. Without moving, move the frame body 41-boot head-to position 11'.At that time, frame bodies 2, 1, (non-phase X1 side bracket of surface 2., 2) / j b , / , 3b is the boom head, 20
'2 (ii11 plaut isa.isa
engage with.

Next, the wire 11-buj is hoisted up by the winch device 4, and the jib 3 is raised upward with the pivot point /o as the center, and at the same time, the boom is laid down, and then the boom/j is raised.
Insert pins /3; and /3; into α and isa, and then remove the frame.
2 as boom head, 2.0 in front of i? After fixing with ii, set the length of the bar to the specified length and set the jib 3 with i.
ili Tail angle [position (tilt angle relative to boom/boom)]
If you support it with , the jib swinging operation will be completed. or,
iJ when storing the jib 3 installed in the use position.
In January, I won the 1st victory and operated in the reverse order of the 1st race.
good.

Said bar l/-&. 1. It is for supporting and fixing the jib 3 at a predetermined angle (?i (tilt angle)) with respect to the boom.
3, , 2 digits (base p'': i4 (!'I mournt(',
2 3 and tip side bar nog) and each of its bars: 23. ,21
/ - A slender intermediate link part + (, 2j etc. (1゛q formed. Proximal side frame material)), 3d Its proximal end, 73rz is provided on the upper surface of the frame body. Bracket I/-
3 to the center S1 and its tip. x3h is the intermediate link member. Proximal end of 2J. , 2Ja with a fixed pin t. Intermediate link member. 23KPJ Fn'i holes on the number side (three in this example) in the length direction. 27α.

), 74, and 27C are formed. Tip side bar material 21
/- tip fA, 2 1/- b t, jib tip 3b
It is pivotally connected to a bracket 4t4/- provided on the upper surface of. At the proximal end of the tip-side companion material 24/-, there is an elongated hole with a long length in the length direction of the bar. 2g (see Figure 3) is formed, and the long 2g and intermediate link II (+t,
By inserting the V4% bottle 2 into the PJ cylinder j hole of any of the 2s circular holes (27fl to 27C), the intermediate link part f;'l', 23 and the tip side bar , 21/- are connected to iL. This park is
W, 8 adjustment bin, 25;' adjustment t6' 1 hole, 27α.

27b,. When the trowel is inserted through the adjusting hole 270 on the tip side of 27C (as shown in Fig. 3), the trowel also becomes longer, and conversely, when it is inserted through the iFJ node hole α on the end side (as shown in Figs. 1 and 3), the trowel becomes longer. φ
(in the case shown in the figure) is the shortest. Also, adjust pin J9 first ☆1.
4th side kidnapping, long hole against 2I/-! g, and during the jib lowering operation, the bracket 3 on the upper surface of the frame body and the bracket t1 on the upper surface of the jib tip end are slidable. Even if the interval between lIL changes
The pin is a prefecture pin, and the second hole is an elongated hole.By sliding it inside the second hole, it is possible to adjust to changes in the spacing of the grooves. Furthermore, t
ii When inserting the adjustment pin 2 into the adjustment hole 27α at the base end, adjust the tilt angle of the jib 3 to about 5 at the jib use position.
Set it to 0, and insert the adjustment pin, 2, into the middle i'1 node hole,
7h, the tilt angle of the jib 3 can be set to approximately 3d3.

As shown in this example, the jib 3 should be supported and fixed at the par ≠ level. In this case, the park acts as a stopper and prevents the jib 3 from moving and flopping.

In addition, if you do crane work with only the boots \/ without using the folding jib ``boom A) J'' and jib 3 shown in the figure, remove the frame system pivots \≠, /hiro and install the jib 3. Remove the tip of the boom/3 from XT and extend the entire boom/II
? All you have to do is make it look like T'-j.

d implementation C.) 1 folding jib ``boom Bk, I:'' shown in Figures jIN and and a long rod J formed at the top of the jib base end 3α
-≠ are directly connected by an intermediate link member 3j having a relatively short length it'4. Seven intermediate link members jj are provided on both the left and right sides (!!II) of the frame body.

Also, three holes 1'1 are formed in the intermediate link member 3j as in the case of the first embodiment, and the long rod at the upper part of the jib base end 3a is inserted through the appropriate holes. Long hole j made at 14/-! By inserting an adjustment pin through r, the distance between the bracket j3 and the long rod j4/ on the upper part of the frame body can be adjusted.

This number, 2. Jibuto Y in JJ Matatami Jipui 1ki Boom B of Real Ih*E'J! The manufacturing method is almost the same as in the carving/embodiment described above, so the explanation thereof will be omitted.

To summarize and explain the present invention in detail, the jib operation method in the folding jib boom of the present invention is described below.
Depending on the situation, it is possible to choose between operating the jib in the forward-extending method or in the downward-extracting method. This has the effect of expanding the usable range of equipment such as cranes compared to before. For example, in a work site where there is sufficient free space on the side of the jib, the jib swinging method is adopted, and conversely, even if there is not enough free space on the 1st side of the jib, there is sufficient free space above. It is possible to perform crane work using a jib at a work site by adjusting the method of lowering and raising the jib, and even at work sites where it was not possible to use a jib in the past. be.

[Brief explanation of drawings]

Figure 1 shows the iL used to demonstrate the jib hill production method of the present invention.
1st actual ff1t↓Example h of folding jib boom:
'+ tu r; 4, U"y, 2 figure night tJl[W+,
J, (-reso jl [;/ 111.10 Folding jib] Side view showing the procedure for operating the jib in a boom P111 [A+, No. 3-11 is used in the present invention No. 2, Example 1 of the second example] A perspective view of a boom with a folding jib, Figure Boom J Heron / ...Boom No. ...Frame body 3 ...Jib 3 (33 6th plate

Claims (1)

[Claims] /J1 part of the frame body for the jib handle that should be attached to the front of the boot tip when in use is pivoted to the side of the boom tip, so that the frame extends from the front of the boom tip to the side. While being able to freely rotate within an angular range of approximately 780°, @
fj The lower part of the jib is pivoted to the RIJ frame so that the jib can be rotated downward from the front of the frame within a desired angle range. When the jib is attached to the tip of the boom and stored toward the boom 1111, the jib may be moved to the side along with the frame body, or the jib may be moved to the side along with the frame body, or A folding jib characterized in that, after the jib is once rotated downward, the frame body can be rotated between the front side and the side of the boom tip. How to operate the jib on a boom.