JPS6326963Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a portable solid tire attachment/detachment device, and is particularly used for attaching/detaching rims of solid tires used as tires for industrial vehicles such as forklifts. Ru.

Conventionally, tire attachment/detachment devices for solid-structure tires require a greater force than pneumatic tires to attach or detach the rim, so stationary types that are structurally durable have been available, but they are too bulky. It was inconvenient to maintain and manage when not in use. Moreover, in this conventional device, a single device was used for attaching the rim to the tire or for removing the rim from the tire. Furthermore, there is no tire attachment/detachment device that has the functions of both attaching a rim to a tire and detaching the rim from the tire, and is of a portable type that can be moved and transported.

The present invention was devised in order to solve the above-mentioned problems of the conventional technology. Although it is a single device, the rim can be reliably attached to and removed from the tire, and when not in use, only a few components can be used. It is an object of the present invention to provide a portable solid structure tire attachment/detachment device which can be divided into individual members for convenient maintenance and management and is convenient to transport.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be sequentially described below with reference to illustrative embodiments.

A is a portable solid structure tire attachment/detachment device,
Base 1, two types of support rings 2 with different diameters, presser ring 3, jack support part 4, jack 10,
It is composed of a support column 5, a push member 6, etc.

The base 1 has a base plate 102 fixed on a cross-shaped leg 101, and further includes a base plate 102.
A fitting part 10 with a female screw carved in the center on 2.
It is constructed by adding 3.

The support ring 2 has a cylindrical shape and is placed on the base plate 102 so as to support the tire 7 itself or the rim 8 thereof. 201 is a cylindrical main body 20
It is a window that can be opened at 2. The support ring 2 is available in two types, one with a long diameter and one with a short diameter. The long diameter support ring 2 comes into contact with and supports a part of the tire 7, and the short diameter support ring 2 comes into contact with and supports the rim 8 of the tire 7.

The presser ring 3 also has a cylindrical shape with approximately the same diameter as the short diameter support ring 2, and has a rim 8 so as to press the upper rim 8.
placed on top.

The tire 7 is not filled with air but has a solid structure. The rim 8 is made up of two plates 801 and 802 that fit onto the inner periphery of the tire 7 from both sides (top and bottom in FIG. 1).

The jack support part 4 has a tray-shaped main body 402 having a through hole 401 in the center through which the support post 5 passes, and a tray-shaped main body 402 that is placed on two beams 9 which are stretched over the upper surface of the presser ring 3 at approximately equal distances with the support support 5 at the center. It is placed. There are two jacks 1 on the left and right sides of the upper surface of this tray-shaped main body 402.
0 and 10 are installed. In this case, jack 1
It is preferable that the mounting positions of the beams 0 and 10 are placed at positions approximately equidistant from each other around the pillar 5, and that a plurality of beams 9, for example, two beams 9, 9 are placed directly below it. This is advantageous in transmitting the reaction force.

The pillar 5 has a male screw 501 carved in its lower end, and is erected on the base 1 by screwing this into the fitting part 103, and also has a male screw 502 in its upper end.
is engraved and passed through the fitting part 602 attached to the center of the push member 6, and the washer 11 is interposed thereon and the tightening nut 12 is screwed onto the fitting part 602, thereby attaching the push member 6 to the support column 5. It is configured to be mounted on the top.

The push member 6 has a main body 601 which is approximately semi-cylindrical in front and has a pressure receiving lower surface 601a at the bottom.
Fitting portions 602 are provided which come into contact with the upper surfaces of the two jacks 10, 10 to generate a downward reaction force on the jacks 10, 10, and which penetrate through the upper and lower centers of the main body 601.

In addition, when adopting one Jyatsuki 10,
A frame body 13 as shown in FIG. 3 is used, which serves both as a support section and a push member.

Next, the main operations of the portable solid tire attachment/detachment device A configured as described above will be explained by dividing them into a rim attachment operation and a rim removal operation.

Rim Installation First, as shown in FIG. 1, the two plates 801 and 802 of the tire 7 that will form the rim 8 are loosely fitted from above and below.
A tray-shaped jack support part 4, a strut 5, and two jacks 10 are placed in such a way that the short diameter support ring 2 shown by the solid line and the short diameter presser ring 3 having approximately the same diameter come into contact with the part 02. , 10, the device A is set using the push member 6, washer 11, tightening nut 12, etc. placed on the upper surface of the jacks 10, 10.

Next, the jacks 10, 10 are placed on the tray-shaped jack support part 4 at approximately equal distances about the support 5.
are operated simultaneously in a conventional manner. At this time, the jacks 10, 10 apply a reaction force to the lower pressure-receiving surface 601a of the pushing member 6 fixed to the upper part of the column 5, and push the column 5 onto the tray-shaped jack support section 4 and the lower surface of this jack support section 4. Beams 9, 9 spanned equidistantly from the center
A downward force is applied effectively and uniformly to the presser ring 3. Therefore, the presser ring 3 presses the upper plate material 801 downward uniformly and without loss, and the support ring 2, which has a short diameter that is approximately the same diameter as the presser ring 3, presses the lower plate material 802 upwardly.
The end portions (flange portions) 801a, 802a and bead seat portions of these plate materials 801, 802 are closely attached to the bead portion of the tire 7, and the central portions of these plate materials 801, 802 are mutually connected as shown by the dashed line. The tires contact each other and overlap, and the plate members 801 and 802 are fitted and mounted on both sides by the elastic restoring force of the tire.

Further, the jacks 10, 10 are arranged at approximately equal distances from each other around the pillar 5, and are arranged on the plate-shaped pressure receiving lower surface 601 of the pushing member 6.
Since the upper part is evenly regulated by the bolts 10 and 10, an unreasonable load is not directly applied to the tightening nut 12 even if a reaction force is generated by the jacks 10, 10, so even if a strong reaction force is generated, the support 5 or the tightening nut 12 is not directly applied. The screw thread of the nut 12 will not collapse.

In addition, if the presser ring 3 is tilted, the pressing force of the tray-shaped jack support part 4 and the presser ring 3 can be adjusted individually by operating the two jacks 10 and 10 individually instead of operating them simultaneously. , plate material 80
Needless to say, it is possible to finely adjust the mounting position of 1,802.

Rim Removal Operation First, as shown in FIG. 1, place the approximate center of the tire 7 on the dotted line (longer diameter) support ring 2, bring the presser ring 3 into contact with the rim 8, and do the same as described above. Set up the device A.

Subsequently, the two jacks 10, 10 are operated simultaneously in a conventional manner. At this time, the jacks 10, 10 arranged equidistantly from the central column 5 are connected to the pressure-receiving lower surface 601 of the pushing member 6 fixed to the upper part of the column 5.
The reaction force is taken at a, and a downward force is uniformly applied without loss to the tray-shaped jack support part 4 and the beams 9, 9 located substantially directly below the jacks 10, 10. Therefore, the holding ring 3 presses the rim 8 downward, and the long support ring 2 presses the tire 7 upward, so that the edge 802a of the lower plate 802 of the rim 8 and the inside of the tire 7 A space is created between the surface and the surrounding surface. Therefore, a crowbar or the like (not shown) is passed through the window 201 of the support ring 2, and the crowbar or the like is inserted between the windows 201 and 201, and the lower plate member 802 is removed by applying force by a lever action. On the other hand, the upper plate material 801
To remove the tire, set the tire 7 in a 180 degree rotation and repeat the same operation as described above.

As described above, according to the present invention, there is provided a base having a fitting part at the center of the base plate, a long-diameter support ring that supports a part of the tire, and a short-diameter support ring that supports the outer circumferential side of the rim. , a short-diameter presser ring placed on the rim, a jack support section placed on the upper surface of the presser ring, a jack disposed on the jack support section, and a lower end thereof fixed to the fitting section. The structure consists of a support that is erected by the support, and a push member that is fixed to the top of the support and has a pressure-receiving lower surface that restricts the upper part of the jack and applies a downward reaction force when the jack is operated. By selectively using a long-diameter or short-diameter support ring together with the presser ring that is placed, the rim can be attached to and detached from the tire with one device. In addition, when not in use, it can be divided and dismantled into each of the above-mentioned small parts, making maintenance management convenient when not in use, enabling effective use of space, and providing excellent practical effects in that the device can be moved and transported very easily. .

[Brief explanation of the drawing]

Figure 1 is a side view of a portable solid structure tire attachment/detachment device implementing the present invention in use, Figure 2 is an exploded perspective view of the same device, and Figure 3 is a side view of another portable solid structure tire attachment/detachment device implementing the present invention. FIG. 2 is a side view of the actual structure tire attachment/detachment device in use. A... Portable solid structure tire attachment/detachment device, 1...
Base, 2...support ring, 3...presser ring,
4... Jacket support part, 5... Support column, 6... Pushing member.

Claims (1)

[Scope of utility model registration request] A base with a fitting part at the center of the base plate, a long-diameter support ring that supports a part of the tire, a short-diameter support ring that supports the outer circumferential side of the rim, and a short-diameter presser that is placed on the rim. a ring, a jack support section placed on the upper surface of the presser ring, a jack disposed on the jack support section, a column erected with its lower end fixed to the fitting section, and a column of the column. A push member is fixed to the upper part and has a pressure-receiving lower surface that restricts the upper part of the jack and applies a downward reaction force when the jack is operated.When removing the rim from the tire, the support ring with the long diameter is used. A portable solid structure tire attachment/detachment device characterized in that the short diameter support ring is used when attaching a rim to a tire.