JPH0676059B2 - Connection structure of carrier traveling mechanism and loading mechanism - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a traveling mechanism equipped with wheels traveling on a rail, and a loading mechanism located below the traveling mechanism for loading articles to be conveyed. The present invention relates to a connection structure of a traveling mechanism and a loading mechanism in a carrier.

2. Description of the Related Art Conventionally, the carrier disclosed in Japanese Utility Model Laid-Open No. 1-30771 has a loading mechanism for loading articles as shown in FIGS. 7 and 8.
12 is a drive side frame 1 of the traveling mechanism 14 by means of bolts 13 and 13.
5 is attached to the lower surface 15a and the lower surface of the driven-side frame (the actual structure has a structure in which the motor 17 with the speed reducer 16 is removed from the driving-side frame.). The bolt 13 has a loading mechanism 12 and a loading mechanism 12
The weight of the goods to be loaded on is added as a tensile load.

However, with such a structure, vibration when the rail 10 travels due to the long-term use of the carrier 11 and the loading mechanism 12
As a result, the bolt 13 is loosened, and the bolt 13 is detached or broken due to the swaying or the like, which causes a problem that the loading mechanism 12 and the traveling mechanism 14 are separated and fall.

In order to deal with such problems, it is necessary to make the bolts, frames, etc. structurally strong, and then,
It is not preferable because it causes an increase in weight, size, cost and the like. In addition, there remains a problem that the structure itself lacks security.

Means for Solving the Problems The first aspect of the present invention is a carrier including a traveling mechanism including wheels traveling on rails and a loading mechanism located below the traveling mechanism for loading a conveyed object. In the above, the concave and convex portions provided so as to complement each other are fitted to the axle protruding surface of the frame of the traveling mechanism and the vertical piece integrally formed on the frame of the loading mechanism so as to face the axle protruding surface. Secondly, a traveling mechanism having wheels for traveling on a rail and the traveling mechanism by a connecting structure in which the both frames are fixed to each other by a mounting bolt that horizontally extends between the vertical piece and the axle protruding surface. In a carrier having a loading mechanism that is located on the lower side of the loading mechanism for loading the conveyed items, the carrier is integrated with the axle protruding surface of the frame of the traveling mechanism and the frame of the loading mechanism so as to face the axle protruding surface. The vertical pieces formed,
The convex and concave portions provided so as to be complementary to each other are fitted to each other, and the above-mentioned both are attached by a mounting bolt that extends vertically between a horizontal protrusion provided horizontally on the vertical piece and a protrusion provided on the axle protruding surface. The problem is solved by a connecting structure in which the frames are fixed to each other.

Operation In the first connecting structure, in order to connect the traveling mechanism and the loading mechanism, it is provided so as to complement the axle protruding surface of the frame of the traveling mechanism and the vertical piece integrally formed on the frame of the loading mechanism. The concavo-convex portions thus formed are fitted to each other, and a mounting bolt extending horizontally between the vertical piece and the axle protruding surface is tightened to fix the two frames to each other.

In the second connection structure, in order to connect the traveling mechanism and the loading mechanism, it is provided so as to complement the axle protruding surface of the frame of the traveling mechanism and the vertical piece integrally formed on the frame of the loading mechanism. The projections and depressions are fitted together, and a vertical mounting bolt is vertically tightened between the horizontal projecting piece integrally formed on the vertical piece and the projecting section provided on the axle protruding surface to fix the two frames. To do.

In both the first and second connection structures, the suspension load of the carrier is applied to the fitting portion of the concave and convex portion via the vertical piece integrally formed with the frame of the loading mechanism and is transmitted to the wheel. During this time, there is no place where the load is applied only by the bolt. Therefore, the mounting bolts only have to perform the fixing function.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 5, a carrier 20 is loaded with goods W to be suspended and travels on a rail 10.
21 and a loading mechanism 22.

The traveling mechanism 21 includes a driving-side traveling mechanism 31 and a driven-side traveling mechanism 32. Drive-side traveling mechanism 31 (Figs. 1 and 2
The figure shows a motor 34 with a reducer 33, and drive wheels 3 attached to the tip 35a of an axle 35 that projects horizontally from the reducer 33.
It has 6 and. Axle protruding surface 3 of frame 37 of reducer 33
A circular protrusion (convex) 38 is formed on 7a. The protrusion 38 is fitted into a fitting hole (recess) 56 formed in a vertical piece 55 described later, and forms a so-called "inlay" portion.

The driven-side traveling mechanism 32 (FIG. 4) has driven wheels 41 attached to the tip 40a of an axle 40 that horizontally projects from the bearing frame 39. Axle protruding surface 39a of bearing frame 39
A circular protrusion 42 is formed on the. Drive wheels 36,
The driven wheels 41 are attached to the axles 35, 40 by attachment mechanisms 43, 43.

The loading mechanism 22 (FIG. 5) includes a drive-side frame 51 and a driven-side frame 52 that are connected by a conveyed object suspension bar 50.
have. Eight guide rollers 53 are provided on each of the frames 51 and 52 so that the upper and lower ends of the rail 10 are sandwiched from both sides.

Further, the drive-side frame 51 is provided with a reducer 33 with four bolts.
A vertical piece 55 for mounting at 54 is erected so as to face the axle protruding surface 37a. The vertical piece 55 is provided with a fitting hole 56 through which the axle 35 penetrates and into which the protrusion 38 is fitted.

Similarly, a vertical piece 58 for mounting the bearing frame 39 with the four bolts 57 (only one is shown in FIG. 4) is also erected on the driven side frame 52 so as to face the axle protruding surface 39a. ing. The vertical piece 58 is penetrated by the axle 40 and the protrusion 42
Is fitted with a fitting hole 59.

In the structure described above, the carrier 20 travels on the rail 10 by the rotation of the drive wheels 36 by the driving of the motor 34 and the decelerating rotation of the speed reducer 33, and conveys the conveyed object W.

The mounting position of the bolt 64 may be a horizontal projecting piece 66 horizontally provided on the upper edge of the vertical piece 65, as in the drive side frame 61 of the stacking mechanism 62 shown in FIG. In this case the protrusion
68 can be made longer, and the connected state is more stable. Since other structures are the same as those in FIG. 1, the same parts are designated by the same reference numerals and the description thereof will be omitted.

The protruding portion (corresponding to the "projection" in the claims) and the fitting hole (corresponding to the "recess" in the claims) are not limited to circular shapes and may be rectangular shapes.

Moreover, since the purpose of fitting the concave-convex portion in the present invention is to apply the vertical load, which has been conventionally applied to the bolt, to the fitting portion of the concave-convex portion, its specific embodiment is different from the specific example described above. There are various possibilities. In addition to the case where the uneven portion is literally formed and fitted, the upper end of the vertical piece may be L-shaped so that the concave portion formed as a result may receive the axle protruding surface itself, or the opposite surface may have a keyway. Alternatively, both may be engaged with each other with a key, or both may be engaged with each other by forming a groove on each of the facing surfaces and interposing a ring therebetween.

EFFECTS OF THE INVENTION According to the connection structure of claims 1 and 2, since the suspension (vertical) load is applied to the fitting portion of the protruding portion of the axle and the uneven portion of the vertical piece, the mounting bolts merely have to perform the fixing function. Therefore, the mounting bolt may be thin, and the weight of the carrier can be reduced. Further, since the wheels attached to the axle prevent the traveling mechanism from coming off, it is possible to prevent the traveling mechanism and the loading mechanism from being separated and falling from the rail.

[Brief description of drawings]

FIG. 1 is a front view of a driving portion of a carrier having a connecting structure according to an embodiment of the present invention, FIG. 2 is a right side view of FIG. 1, FIG. 3 is an exploded view of essential parts, and FIG. 4 is a carrier. FIG. 5 is a front view of a driven portion of the carrier, FIG. 5 is a side view of the entire carrier, FIG. 6 is a front view of a driving portion of a carrier having a connecting structure according to another embodiment of the present invention, and FIG. FIG. 8 is a left side view of FIG. 7 of the drive section. W …… Transported goods, 10 …… Rail 20 …… Carrier, 21 …… Traveling mechanism, 22,62 …… Loading mechanism, 35,40 …… Axle, 36 …… Drive wheel (wheel), 37 …… Frame ( Travel mechanism frame) 37a, 39a …… Axle protruding surface 38, 42, 68 …… Projection part (projection part) 39 …… Bearing frame (travel mechanism frame) 41 …… Driven wheel (wheel) 51, 61 …… Drive side frame (frame of loading mechanism) 52 …… Drive side frame (frame of loading mechanism) 54,57,64 …… Mounting bolt 55,58,65 …… Vertical piece 56,59 …… Mating hole (recess) , 66 …… Horizontal protrusion

Claims (2)

[Claims] 1. A carrier comprising a traveling mechanism having wheels traveling on a rail, and a loading mechanism located below the traveling mechanism for loading conveyed articles, wherein an axle projection of a frame of the traveling mechanism is provided. Surface and a vertical piece integrally formed on the frame of the loading mechanism so as to face the axle projecting surface are fitted with complementary concave and convex portions so that the vertical piece and the axle protruding A connecting structure for a carrier traveling mechanism and a loading mechanism, characterized in that the two frames are fixed to each other by a mounting bolt that extends horizontally between the frame and the plane. 2. A carrier comprising a traveling mechanism having wheels for traveling on rails and a loading mechanism located below the traveling mechanism for loading conveyed articles, wherein an axle projection of a frame of the traveling mechanism is provided. Surface and a vertical piece integrally formed on the frame of the loading mechanism so as to face the axle projecting surface, the uneven portions provided so as to complement each other are fitted to each other, and provided horizontally on the vertical piece. A connecting structure for a traveling mechanism of a carrier and a loading mechanism, wherein the two frames are fixed to each other by a mounting bolt that extends vertically between the horizontal protruding piece and the convex portion provided on the axle protruding surface.