JPH0899630A - Load fall preventing fence for conveyor device - Google Patents

Abstract

PURPOSE: To prevent the fall of loads from fence members and convey the fence members easily. CONSTITUTION: A rail supporting beam 3 is fitted to the ceiling T of a factory or the like, and a travel rail 1 is suspended from the supporting beam 3 through a rail support 4. A conveyor device 2 travels along this travel rail 1. Hanging frames 12 are fitted to the rail supporting beam 3 every specified constant space, and safety fences 13 are fitted to the lower ends of both arm parts 12a. This safety fence 13 is constituted of a supporting frame 14 and beam members 15. The supporting frame 14 is formed to be bent in approximately U-shape on the side face formed of a bottom part 16 and both side parts 17 with the upper side opened, and both side parts 17 are formed to be opened toward the upper side. Plural safety fences 13 can thereby be stacked one upon another at the time of conveyance so as to enable easy conveyance of the safety fence 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load drop prevention fence for a carrier device that travels along a traveling rail installed on a ceiling.

[0002]

2. Description of the Related Art Conventionally, a safety device for an overhead type article conveying apparatus, which is disclosed in Japanese Utility Model Laid-Open No. 2-27965, has been proposed as a load drop prevention fence for this type of conveying apparatus.

This safety device is provided with a suspension arm formed so as to cover a traveling vehicle traveling on the ceiling, and is located below the suspension arm.
It is composed of a plate-shaped safety net that is detachably attached. The traveling vehicle travels with the load placed thereon, conveys the load, and even when the load falls from the traveling vehicle, the load falls and is retained on the safety net.

Further, Japanese Patent Laid-Open No. 62-290696 proposes a safety shelf for a ceiling self-propelled vehicle. On the safety shelf of the ceiling self-propelled vehicle, substantially elliptical support members are attached at predetermined intervals along a rail on which the ceiling self-propelled vehicle travels. Two lower shelf lines are attached to the lower part of each of the supporting members so as to bridge the supporting members in parallel. Then, on these lower shelf lines, side shelf lines are respectively provided upright vertically upward.

That is, when the load carried by the ceiling self-propelled vehicle falls, it falls on the lower shelf line. Therefore, the load is prevented from falling to the ground. In this case, the load on the lower shelf line is locked by the side shelf line and lateral movement is restricted even when the lower shelf line is laterally shaken or the like.

[0006]

In the former safety device,
When the safety net vibrates due to the vibration of the traveling vehicle, for example, there is a problem that a load on the safety net may be laterally displaced and the load may drop from a side portion of the safety net.

Since the latter safety shelf is provided with side shelf lines and supporting members, when carrying a plurality of safety shelves for assembly or the like, these side shelf lines and supporting members interfere with each other. There is a problem that they cannot fit and overlap, and are bulky.

Further, since the side shelf lines are formed at predetermined intervals, there is a problem that the load may fall off from the side without the side shelf lines due to vibration of the safety shelf or the like. The present invention has been made to solve the above problems, and an object of the present invention is to prevent a load from falling from a fence member and to prevent a load from falling in a carrier device that can easily convey the fence member. To provide a fence.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 is a load drop prevention fence of a transfer device which travels along a traveling rail erected on a ceiling portion, wherein the ceiling is provided. The hanging member is hung from the portion, and the fence member is detachably attached to the lower end of the hanging member, and the fence member is formed to have a substantially U-shaped cross section, and both side portions thereof are formed so as to expand toward each other. The summary will be given.

The invention according to claim 2 is, in the invention according to claim 1, characterized in that a honeycomb shape is formed by the hanging member and the fence member. The gist of the invention of claim 3 is that in the invention of claim 1 or 2, the fence member is unitized in a unit of a predetermined length.

[0011]

Therefore, according to the first aspect of the present invention, the carrier device travels along the traveling rails installed on the ceiling. The load drop prevention fence is hung from the ceiling so as to cover the transport device and the traveling rail, and is composed of a hanging member and a fence member. When the fence member is separated from the suspension member and is conveyed, the fence members are sequentially stacked because both sides of the fence member are formed so as to open toward the opening. Then, by transporting these fence members in a stacked state, the fence members can be easily transported.

According to the second aspect of the present invention, since the load drop prevention fence is formed in a honeycomb shape, the rigidity is enhanced, and obstacles such as ribs located on the side portions of the load drop prevention fence are provided. Interference with can be avoided.

According to the third aspect of the present invention, since the load drop prevention fences are unitized for each predetermined length, the necessary number of load drop prevention fences can be provided when the layout of the transport route or the like is changed. It can be easily dealt with by combining, removing, or replacing.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment embodying the present invention will now be described with reference to FIGS.
It will be described with reference to FIG. FIG. 1 shows a carrier device 2 that travels along a traveling rail 1 that is installed on a ceiling T of a factory or the like. The traveling rail 1 includes a rail support beam 3 attached to the ceiling T with a bracket (not shown).
It is suspended via the rail support 4. In this case, the ceiling T corresponds to the ceiling T and the rail support beam 3 suspended from the ceiling T.

The traveling rail 1 has a substantially U-shaped cross section, and a horizontally extending lower supporting portion 5 and an upper supporting portion 6 are connected by a vertically extending connecting portion 7. A standing portion 5a is formed on the lower support portion 5 along the longitudinal direction of the traveling rail 1, and a horizontal portion 5b is formed on the upper surface thereof. or,
A guide protrusion 6 a protruding downward is formed on the upper support portion 4 along the longitudinal direction of the traveling rail 1.

The carrier device 2 is provided with traveling wheels 8 such as driving wheels driven by a traveling motor (not shown).
Furthermore, the conveying device 2 is provided with a pair of left and right guide rollers 9a and 9b. The running wheel 8 is the horizontal portion 5
The transport device 2 rolls on b and travels based on the rolling of the traveling wheels 8. And the running wheel 8
During the rolling of the two guide rollers 9a, the guide protrusions 6
In the state in which a is sandwiched between the guide rollers 9b, both guide rollers 9b
It rolls in a state of sandwiching it to prevent lateral shake or the like of the transport device 2.

On the lower surface of the carrier device 2, the lifting belt 1 is provided.
0 is provided with a loading platform 11, and a hoisting device (not shown) provided in the transporting device 2 winds up and down the lifting belt 10 so that the loading platform 11 moves up and down. . Then, the transport device 2 travels along the traveling rail 1 with the load W placed on the load mounting table 11, so that the transport device 2 transports the load W.

As shown in FIGS. 1 to 3, a suspension frame 12 is attached to the rail support beam 3 as a suspension member whose lower portion is opened at predetermined constant intervals. The hanging frame 12 is formed in a bent shape, and arms 12a extending vertically downward are formed on both sides of the hanging frame 12, respectively. Then, a safety fence 1 as a fence member is provided below the arms 12a via a hook member F attached to the lower portion.
3 is attached. That is, the beam member 15a described later of the safety fence 13 is attached by engaging with the hook F. At this time, a retaining bolt B is screwed into the upper portion of the hook F so that the beam B cannot be disengaged from the hook F by the bolt B. Further, the safety fence 13 is attached in a state of bridging both suspension frames 12 located on both sides. The shape formed by the suspension frame 12 and the safety fence 13 is an octagonal shape as a honeycomb shape, that is, a polygonal shape.
The safety fence 13 is used in a straight section in which the traveling rail 1 extends linearly, and the safety fence 13 extends linearly along the traveling rail 1. Then, the hanging frame 12 and the safety fence 13 form a load drop prevention fence.

The safety fence 13 is formed in a substantially U-shape with its cross-section open at the upper side, and both sides thereof are formed so as to widen upward (outward). The safety fence 13 includes a support frame 14 and a beam member 15 having a hollow cross section. The support frame 14 is bent and formed into a substantially U-shaped side surface including a bottom portion 16 and both side portions 17 whose upper side is open, and the both side portions 17 are formed so as to spread upward (outward). These support frames 14 are arranged at predetermined intervals in the longitudinal direction.

The support frame 14 includes a bottom portion 16 and both side portions 17.
In, a plurality of beam members 15 are attached in parallel along the longitudinal direction so as to bridge between the support frames 14.
In this case, the beam member 15a attached to the upper ends of the side portions 17 has a larger diameter than the other beam members 15.

Then, as shown in FIG. 3, connecting brackets 14a are attached to the support frames 14 located at both ends of the safety fence 13, and the brackets 14a have a first long hole.
The connection hole 14b is formed, and the support frame 14 is formed with a second connection hole 14c having a substantially circular shape. Then, as shown in FIG. 2, adjacent safety fences 13
When connecting the bolts, the first and second connecting holes 14b and 14c of the adjacent safety fences 13 are overlapped with each other, and the bolts B1 are inserted into the holes 14b and 14c.
It is done by tightening and fixing.

5 and 6 show a safety fence 18 used in a curved section in which the traveling rail 1 curves. Similar to the safety fence 13, the safety fence 18 includes a support frame 14 and a beam material 15, and the beam material 15 is bent in an arc shape to have an arc shape. In addition, the cross section of the safety fence 18 is formed in a substantially U shape with the upper part open, and both sides are upward (outward).
It is formed so as to expand toward. Further, the bending rate of the safety fence 18 is formed according to a predetermined standard.

Further, connecting brackets 14a are attached to the support frames 14 located at both ends of the safety fence 18, and first bracket connecting holes 14b are formed in the brackets 14a. A second connecting hole 14c having a substantially circular shape is formed in the. The adjacent safety fences 18 are connected in the same manner as the safety fence 13.

In the safety fences 13 and 18 constructed in this way, when the load W falls from the loading table 11, the safety fences 13 and 1
Drop on 8. Then, even if the load W on the safety fences 13 and 18 is laterally displaced by the vibration of the transport device 2 during traveling, the load W is stopped at the both side portions 17. Therefore, the load W can be prevented from falling below the safety fences 13 and 18.

Further, the safety fences 13 and 18 are opened in a direction in which both side portions 17 are expanded, and as shown in FIG.
(Only shown in the case of)) The shape is such that it can be easily stacked. For this reason, when the safety fences 13 and 18 are transported to attach the safety fences 13 and 18, they can be transported in the stacked state and the load can be transported in a compact state. Can be transported to.

Further, even when the safety fences 13 and 18 are stored, the safety fences 1 are stacked in a compact state.
Since it is possible to store 3, 18, it is possible to store the safety fences 13, 18 in a small accommodation space.

Further, the hanging frame 12 and the safety fences 13 and 18 in the assembled state form a honeycomb shape, that is, a rectangular body having an octagonal cross section. Therefore, the safety fence 13,
For example, as shown in FIG. 1, 18 is attached to a ceiling T or a pillar P extending from the ceiling T to the ground, and a ceiling rib R and a wiring duct D installed at positions adjacent to the safety fences 13 and 18. Interference with each member such as can be prevented.

Further, since the safety fences 13 and 18 are unitized to a predetermined length, the safety fence 1 unitized.
By changing the combination of 3, 18, etc., it is possible to easily cope with the layout change of the traveling route. For example, in the case of a straight line section having a predetermined length, if the length of the straight line section is shortened by changing the layout, the safety fence 13 can be easily removed by removing the shortened length. Further, even when the bending ratio of the curved section is changed in the curved section due to the layout change of the traveling route, it can be easily dealt with by replacing the safety fence 18 with the safety fence 18 having the changed bending rate. .

Further, in the safety fence 18, even if the load W is dropped from the carrier device 2 by the centrifugal force applied at the time of a curve and is dropped to the side of the safety fence 18 according to the acceleration, the both side portions 17 are formed.
Thus, the load W can be retained in the safety fence 18 and can be prevented from falling downward from the safety fence 18.

The present invention is not limited to the above-mentioned embodiments, and may be appropriately modified and carried out without departing from the spirit of the invention. (1) In the above embodiment, the safety fence 13 is formed by suspending the beam members 15a, 15 between the support frames 14. As shown in FIG. 7, the beam members 15a, 15 are disposed only on the upper and lower portions of the both side parts 17, and the net member 1 is formed so as to cover the outer peripheries of the beam members 15a, 15 respectively.
9 may be attached to form the safety fence 20. According to the safety fence 20, it is possible to prevent a small load W such as a small part from coming out from between the beam members 15 as in the case of the safety fence 13, and more reliably the load W falls from the safety fence 20. Can be prevented.

Instead of the net material 19, punching metal may be formed so as to cover the outer circumference of the safety fence 20. (2) In the above embodiment, the suspension frame 12 is attached to the rail support beam 3 as the ceiling portion, but the suspension frame 12 is attached to the ceiling T itself.
May be attached.

(3) In the above embodiment, the safety fence 13 is attached to both ends of the safety fence 13 or the like, that is, the two hanging frames 12, but only one or three hanging frames 12 are used for safety. The fence 13 may be attached.

(4) In the above embodiment, the safety fence 13 may be formed in an arc shape. The technical ideas other than the claims that can be understood from the above embodiments will be described below along with their effects.

(1) In the invention according to claims 1 to 3,
The safety fence 20 is a cargo drop prevention fence of the carrier device to which the net material 19 is attached. According to this load drop prevention fence, even a small load W such as a small part can be prevented from falling out of the safety fence 20 and falling.

The term "honeycomb shape" used in this specification is defined as follows. The "honeycomb shape" means a bilaterally symmetrical polygonal shape, and not only the octagonal shape shown in the above-mentioned example but also a hexagonal shape, a heptagonal shape, and a polygonal shape of a hexagonal shape or more. It is meant to include.

[0036]

As described above in detail, according to the invention of claim 1, the load is prevented from dropping from the fence member, and
The fence member can be easily transported. According to the second aspect of the present invention, since the load drop prevention fence has a honeycomb shape, the rigidity of the load drop prevention fence can be increased. According to the invention described in claim 3, when the traveling route is changed, it is possible to easily cope with the change by, for example, attaching, removing, or exchanging the necessary number of fence members according to the change.

[Brief description of drawings]

FIG. 1 is a front view showing a safety fence and a suspension frame.

FIG. 2 is a side view showing a safety fence and a suspension frame.

FIG. 3 is a plan view showing a safety fence.

FIG. 4 is a front view showing a state in which safety fences are stacked.

FIG. 5 is a plan view showing a safety fence used in a curved section.

FIG. 6 is a side view showing a safety fence used in a curved section.

FIG. 7 is a side view showing a safety fence and a suspension frame in another example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rail for traveling, 3 ... Rail support beam which comprises a ceiling part, 12 ... Suspension frame as a suspension member, 13, 18, 2
0 ... Safety fence as a fence member, 17 ... Side portion, T ... Ceiling that constitutes the ceiling portion.

Claims (3)

[Claims] 1. A load drop prevention fence for a carrier device traveling along a traveling rail erected on a ceiling part, wherein a suspending member is suspended from the ceiling part, and a fence member is detachably attached to a lower end of the suspending member. At the same time, the fence member is formed to have a substantially U-shaped cross-section, and both sides of the fence member are formed so as to expand toward each other. 2. The load drop prevention fence for a transfer device according to claim 1, wherein the hanging member and the fence member form a honeycomb shape. 3. The load drop prevention fence for a carrier device according to claim 1, wherein the fence member is unitized in a unit of a predetermined length.