JPH03281403A - Lock ring with safety lever - Google Patents

Abstract

PURPOSE:To ensure the confirmation of the attached state of a safety lever in a lock ring with safety lever for a wheel rim of a large-type construction machine or the like by forming a notch on a side opposite to the abutting face of a bead seat band at each cut end of the lock ring, and arranging the safety lever between both the notches with a position distinguishing means provided together with it. CONSTITUTION:Each of cut ends 11, 12 of a lock ring 4 is formed with a conical surface 4a on which a bead seat band abuts and notches 13, 14 on the side opposite to the conical surface 4a, and a bar-shaped safety lever 15 which is about square in a sectional shape and extends toward the notch 14 is fixed to the notch 13. The notch 14 is provided with a position distinguishing means 16 for indicating the position of the safety lever 15 to distinguish whether the arranged position of the free end 15a of the safety lever 15 on the notch 14 is proper or not. This formation can ensure the attached state of the safety lever 15.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lock ring for a wheel rim used in large construction machinery, etc., and particularly to a lock ring that allows the lock ring to be securely attached to a lock ring groove. Regarding the structure of

[Prior Art] In large wheel rims used for construction machinery, the tire is fitted into the rim base from one side of the tire, and then
The bead seat band is fitted into the rim base. When the bead seat band is fitted into the rim base, the lock ring is attached to the lock ring groove of the rim base, and movement of the bead seat band in the axial direction is restricted.

In this case, if the lock ring is not securely installed in the lock ring groove, there is a risk that when the tire is filled with air, the lock ring will come off from the lock ring groove due to the pressure force of the tire and the lock ring will pop out. .

As a means to prevent this, for example,
-137201 publication exists. In the wheel rim disclosed in this publication, if the lock ring is not installed in the correct position, a sealed state that should be filled with air cannot be obtained.

FIGS. 10 and 11 show an example of a conventional lj-eel rim. In the figure, 1 indicates the rim base (,7
, the outer circumferential surface of the rim base '1 (, J [yo, beat seat 1...pan 1 mi 1!!, or axial direction k"-fitted movably 2, 1, the outer circumferential surface end G4 of the rim base 2: teeth,
A [-] ring is formed extending toward the circumference. l: '1 Tsukling groove 3G: G1. The cut is h
The tsutari ring 4 is attached. [A conical surface 4a is formed on one side of the ring 4,
Conical surface 4a of JI knee sheet, t%) [-
The inner conical surface 2a is formed at the end of the inner conical surface 2a and serves as an abutting eye.

From L to F Seat pan F'2's lock ring 4 and contact i
'il capable edge side! J is t! Edge ring 5 is installed. The inner circumference σ of the safe buoy ring b is [-
1 Ability to fit with the outer circumferential surface of the ivy link 4! , T.

A seal groove 6 is formed on the outer peripheral surface of the thumb base 1, and a seal ring 7 is attached to the seal groove 6GJ. The seal ring 7 has the function of sealing the gap between the rim base 1 and the beat seat band 20.

Wheel rim like J [, °oi ζ-G4-1, 1st
1 Figure 16゛.

Show("yo・5 c: ,,, o...Meckling 4 or l
-If the groove 31 is not fully shielded,
When the end face of the lower 1 fling 4 comes into contact with the round 11 surface 4aC of the lower 1 fling 4, the seal ring 1 also stops its sealing function. 4゛, tie) / is not filled with air.

[The invention solves the problem j(, ・ka(, 7
From the vue, Figure 10 and Figure 11 1, f show one Hui.
-The structure of Rurimu is also a problem that needs to be solved.

In the case of the wheel rim shown in Figure 1 () J5 and Figure 11,
The safety ring 5 provided on the heat seat band 2 can be fixed to the heat seat band 2 by welding separately, or the safety ring 5 can be fixed to the heat seat band 2 by welding. It is integrally formed with (], J, in extension,...
Part 1 = Me, production J - several people, and bead sea 1
~The weight of band 2 also increases by 710. Therefore, a problem arises in that the number of products per strike increases.

Further, there is a problem in that it becomes difficult to attach the lock ring 4 if the lock ring 4 is deformed by a curb or an obstacle while the vehicle is running.

Note that in the past, it was difficult to visually determine whether or not the lock ring 4 was completely installed in the lock ring groove 3, so the measures described above were essential. If it were possible to easily visually determine whether or not the device is completely attached, the above-mentioned measures would be unnecessary.

The present invention focuses on the above-mentioned problem, and makes it possible to easily judge whether or not the lock ring is securely installed in the lock ring groove, and reliably prevents the lock ring from popping out due to improper installation. The purpose is to provide a lock ring that can be

[Means for Solving the Problems 1] The lock ring with lever according to the present invention in accordance with this purpose is attached to the lock ring groove of the rim base,
In a lock ring that restricts the axial movement of a bead seat band disposed on the outer periphery of the rim base, a notch is provided at each cut end of the lock ring on the side opposite to the surface on which the bead seat band can come into contact. are formed respectively,
A safety lever extending in the direction C toward the other notch is fixed to one notch, and the free end side of the safety lever is arranged in the other notch, and the sensors 7 to 7 are placed in the other notch. A position determining means for indicating the position of the free end of the E-lever is provided.

[Function] In the sender lever four-eye tutting ring configured as described above, it is determined whether the one-piece ring is attached properly or not based on the relationship between the safety lever and the position determining means. That is, the lock ring is completely inserted into the lock ring groove. : If the lock ring is not attached, the free end of the Xenody lever cannot reach the predetermined position of the position determining means, and by visually confirming this condition, it is possible to determine whether the lock ring is improperly attached.

Further, the safety lever is disposed in a notch at each cut end, and has a sufficient length to hook and pass each cut, thereby eliminating the increase in weight that occurs in the prior art.

[Example 1] The following describes the details of the present invention. A preferred embodiment of the hoodie lever attachment will be described with reference to the drawings.

First Embodiment FIGS. 1 to 5 show a first embodiment of the present invention. This embodiment differs from the prior art in FIGS. 10 and 11 only in the presence or absence of a safety ring, safety lever and notch, and other parts are the same as the prior art. By assigning the same months to the parts as in FIGS. 10 and 11, the explanation of the corresponding parts will be omitted, and only the different parts will be explained.

FIG. 1 shows a state in which the lock ring 4 is securely attached to the lock ring groove 3 of the rim base 1. The lock ring 4 has a cut 10 for diameter expansion. Each cut end 11.12 of the lock ring 4 has a notch 1
3.14 are formed respectively. Each notch 73. ．．
14G and 11 are provided on the side opposite to the conical surface 4a against which the fixed seat band 2 comes into contact.

A safety lever 15 is fixed to one notch 13 of the lock ring 4 and extends toward the other notch 14 . The safety lever 15 is composed of a rod-shaped member having a substantially rectangular cross-sectional shape. The top surface of the safe-day lever 15 is slightly lower than the top surface of the lock ring 4,
Utilizing this step, a part of the safety lever 15 is fixed to one notch 13 of the lock ring 4 by fillet welding W.

The free end 15a of the safety lever 15 is arranged in the other notch 14 of the lock ring 4. The other notch 14 is provided with a position determining means 16 for displaying the position of the safety lever 15. The position determining means 16 is
For example, it consists of scales, markings, etc. That is, the position determining means 16 displays the position of the free end of the safety lever 15 when the lock ring is installed in the lock ring groove 3, and determines whether the free end position is normal or not. Other configurations may be used as long as the determination can be made.

As shown in FIG. 1 or 3, the safety lever 15 has a tool insertion portion 17 formed therein. The tool insertion part 17 is a part into which a tool (not shown) is inserted when removing the lock ring 4 from the lock ring groove 3.
It is formed on the fixed side of the safety lever 15. The lower surface 15b of the safety lever 15 matches the bottom surface 4b of the lock song 4, and the opening wall 17 of the tool insertion portion 17
a is located above the lower surface 15b by a height H. Furthermore, the back of the upper wall continuous to the opening wall 1γa of the tool insertion portion 17 is an inclined surface 17b extending obliquely upward.

In the first embodiment configured in this way, when the lock ring 4 is attached to the lock ring groove 3, the free end 15a of the safety lever 15 is disposed in the notch 14; The position of the free end 15a of the safety lever 15 relative to the position determining means 16 is confirmed by an operator or the like. Here, if the lock ring 4 is securely attached to the lock ring groove 3, the safety lever 1
5's freedom @15a indicates that the position determining means 16 is within the allowable value, and the operator can determine at a glance that the lock ring 4 is installed in a normal state. Conversely, if the lock ring 4 is incompletely installed in the lock ring groove 3, the free end 15 of the safety lever 15
a indicates that the position is outside the allowable value of the position determining means 16, and the operator can determine at a glance that the lock ring 4 is incompletely attached. That is, the position determining means 16 is color-coded into green and red, and the safety lever 15 is
For example, if the free end 15a of the lock ring 4 indicates a green color, it can be easily determined that the lock ring 4 is completely attached, and if the free end 15a indicates a red color, it can be easily determined that the attachment is incomplete.

Therefore, if the lock ring 4 is not completely installed, the lock ring 4 can be reliably prevented from coming out of the lock ring groove 3 by reinstalling the lock ring 4.

Further, by providing the tool insertion portion 17 on the safety lever 15, the lock song 4 can be easily removed from the lock ring groove 3. In other words, the back of the tool insertion part 17 is designed as an inclined surface 17b extending diagonally upward, so please take a look] , 11A are engaged with the inclined surface 17b, and the cut end of the lock ring 4 is easily pulled out from the lock ring groove 3. This makes it easier to remove the tires, and the efficiency of tire replacement work can be greatly improved.

Second Embodiment FIGS. 6 to 9 illustrate a second embodiment of the present invention in a smaller scale. This embodiment differs from the first embodiment only in the shape of the C other missing glue and the shape of the free end of the pitty lever, and the rounded part is the same as in the first embodiment, so
Since No. 1 is attached and V, the explanation of that part will be omitted.

The first embodiment ζ゛ was formed at the other notch 14 or the corner of the cut end, but the present embodiment 'C was formed at a position shifted in the circumferential direction from the end face of the cut end. cutout 14'
is formed. The safety T-E lever 15-1 is formed with a relief portion 15c that releases the protrusion at the end of the cut L adjacent to the cutout portion 14-.

In the second embodiment 1 configured in this way, the SENO T
- The free end 15a of the lever 15'' has a notch 14' (J
Placed. Therefore, according to the first embodiment] "For Mr. J1"] If the lock ring is not fully fitted into the lock ring groove 3, the free end of the pitty lever ~15'' is provided in the notch 14-'. It is possible to visually determine whether the lock ring 4 is installed incompletely by indicating a device failure (for example, red) in the position determining means 16.

The operation of the third embodiment is similar to that of the first embodiment.

[Effects of the Invention Song 1 As explained below, [4] When using a lock ring with a sensor lever according to the present invention (J), each cut of the lock ring!""'1 Each cutout part is provided at the @ part. Place the free end side of the tr body lever - fixed in the notch of h in the other notch, and
1. Install a position determining means to display the position of the free end of the pitty lever. ': Therefore, it is possible to easily judge by visual inspection whether the condition of the device is good or bad. Make sure that the lock ring comes out of the ``-'' ring groove by pressing the J button.
, 7 defense 1 "(ru(two~to(-kiru).

The length of the 1st Cenote Leper is slightly larger than the lock ring circumference (ζ″@(8), so the increase in #l of the L1 Tsukling @ Akira is tremendous, and the weight of the wheel rim is lighter compared to the conventional one. It is possible to measure whether it is possible or not.In the meantime, it can be solved by simply attaching the notch]- and the safety lever to the lock ring.1]1
The production cost can be reduced compared to the conventional method.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the lock ring with lever according to the first embodiment of the present invention, and Fig. ff12 is the cut 1j portion of the lock ring in Fig. 1.
White angle view, Figures ' and 3 are cross-sectional views along the river-m line in Figure 2, Figure 4 is a side view of the tonneau j lever in Figure 2, and Figure 5 is a V-v in Figure 4. 6 is a plan view of the cut portion of the lock ring with a noj L/bar according to the second embodiment of the present invention, and FIG. 7 is a sectional view taken along the vu-VU line of FIG. 8 is a side view of the lever 4-) in FIG. 6, and FIG. 9 is a sectional view taken along line IX-IX (J in FIG. 83,
Figure 11 is a four-part cross-sectional view of the wheel reno 5 from Figure 10. The figure is... 1...Limbe~S?...Beat Sea[...Band 3...
・[] y /7 Ring groove 4......L Cottle ring 11.12......Cut IQ ljj""3 End 1
, ゛), ia, i, i-'...notch 15.1
5-・・・・-・P'No! Elever 15 a...
-...Free end 16...Position Ti, 1 separate from 1 and 17...TU difference (J Mibe General

Claims (1)

[Claims] 1. In a lock ring that is installed in a lock ring groove of a rim base and restricts the axial movement of a bead seat band arranged on the outer periphery of the rim base, the bead seat bands at each cut end of the lock ring come into contact with each other. a safety lever extending toward the other notch is fixed to one of the notches, the free end side of the safety lever is disposed in the other notch, and A lock ring with a safety lever, characterized in that the other notch is provided with position determination means for displaying the position of the free end of the safety lever.