JPS6111191Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The disclosed technology provides a movable safety fence on the side edge of the club on the saddle of a traveling crane, and the movable safety fence does not obstruct the travel range of the club. It belongs to a technical field that guarantees the safety of walking and working on a saddle.

Therefore, in this invention, the club is provided so that it runs on a rail installed between a pair of saddles, and a safety fence is fixed to the outer edge of the saddle.
A movable safety fence attached to the inside of the fixed safety fence is movable on the saddle in the same direction as the club travels,
In addition, it is a device for a traveling crane that is equipped to be able to move up and down, and in particular, a movable safety fence installed on the side edge of the saddle near the club moves outward when the club is approaching, thereby preventing the club from traveling. This invention relates to a traveling crane that can secure a safe area and return to its initial position using the weight of a movable safety fence when the club leaves the club.

<Prior art> Generally, a traveling crane installed on the ceiling of a workplace has wheels 2 and 2 on a pair of traveling belts 1 arranged on both sides of the ceiling, as shown in Fig. 1, whose overall structure is shown. Two saddles 3, 3 having two saddles 3, 3 are mounted so as to be freely movable, and two girders 4, 4 are provided in parallel between the pair of saddles 3, 3.

Therefore, rails 5 and 5 are installed on the girders 4 and 4, respectively.
A club 6 is attached to the club 6 so as to be freely movable thereon, and a hook 7 is suspended from the club 6.

In addition, an operation room 8 is provided near the outside of one of the girders 4, and the club 6 travels on the girder 4 by the operator's operation.
By running the saddles 3, 3 on the traveling belts 1, 1, it is possible to lift and lower cargo within a certain area in the workplace.

<Problems to be solved by the invention> In such a traveling crane, there are cases in which work is performed on each saddle 3 mainly when the crane is stopped, and in this case, in order to ensure work safety, the work is illustrated near the outside of the saddle 3. However, since there is no safety fence on the club 6 side, that is, on the inside, this has caused anxiety to the operator.

To deal with this, there have been ideas such as handrails for overhead cranes as shown in Japanese Utility Model Application Publication No. 53-130781, but the handrails roll on guide rails with rollers and are not able to return freely. However, since the handrail can be raised, lowered, and moved by engaging the pin in the groove and the roller through the rail, there are problems such as unstable posture of the handrail and rattling.

The purpose of this invention was to solve the technical problem of the safety of the traveling crane based on the above-mentioned conventional technology, and to solve the problem of the safety of the traveling crane based on the above-mentioned conventional technology. By providing a movable safety fence that can be brought into contact with the club, the above-mentioned disadvantages are eliminated, and work on the saddle is made safer, which is an excellent feature that benefits the field of safety technology application in the manufacturing industry. The aim is to provide a traveling crane with a

<Means/effects for solving the problem> In accordance with the above-mentioned purpose, the structure of this invention, which is based on the scope of the above-mentioned utility model registration claim, is to solve the above-mentioned problem by determining whether the club is running or not. Or,
When riding only on the center part of the rail, a movable safety fence is installed on the club side edge of the saddle to ensure safety when walking and working on the saddle.
When the club moves and approaches the movable safety fence,
At the terminal area, the movable safety fence is pushed by the club and moves upward and outward to secure the running range of the club, and when the club moves away from the club, the movable safety fence is moved by its own weight. Technical measures are taken to return to the inside position and create a predetermined space on the saddle.

<Example> Next, an example of this invention will be described below based on the drawings from FIG. 2 onwards. Note that the same parts as in FIG. 1 will be explained using the same reference numerals.

Figures 2 and 5 show the connection between the saddle 3 and girder 4 of the traveling crane of this invention.A rail 5 is laid on the girder 4, and a stopper 10 is formed at its outer end. Also, one safety fence 9 is fixedly installed at the outer end of the saddle 3 in the same manner as in the conventional configuration.

Therefore, a pair of two guide rails 13, 13 are attached to the saddle 3 on both inside sides of the girder 4.
and the fixed brackets 14 and 1 with a set angle tilt respectively.
4, and the guide rail 1
3 and 13 are fixed brackets 1 as shown in Fig. 6.
4 and 14 in a parallel manner above and below.

In addition, a movable safety fence 15 is provided on the side of the club 6 on the saddle 3 in a natural state, that is, in a state where the club 6 is not close to each other, and as shown in FIGS. Two rollers 18, 18 in the longitudinal direction are mounted on a bracket 17 with an L-shaped cross section at the lower end of each leg 16 on both sides of the fence, and each roller 18 is inserted into the gap 19 of the guide rails 13, 13. By moving up and down the movable safety fence 15, the movable safety fence 15 moves up and down in a direction perpendicular to the girder 4.
The club 6 is configured to be able to move up and down while moving in the same direction as the traveling direction, and for this purpose, a pair of pushers 20, 20 are attached to the movable safety fence 15 at the outer end of the club 6. Two pieces are placed on each side of the club 6 in the longitudinal direction so as to be in contact with each other at a dimensional interval corresponding to the lateral pitch dimension a of the receiving plates 21, 21.

The grooves of the guide rails 13, 13 are arranged so that when the movable safety fence 15 is separated from the club 6, the movable safety fence 15 always moves toward the club 6 side due to its own weight and then descends and stops. A stopper 22 provided at the inner end of the roller 19 prevents the roller 18 from coming off.

In the above-mentioned configuration, when the club 6 is stopped at the center of the rail 5 or is running forward and backward on the center, the movable safety fence 15 is lowered by its own weight, so it is not movable. Formula safety fence 15
is moved in the direction of the club 6 by the inward component of the force, and is stopped by being stopped by the stopper 22.

Therefore, in this state, the safety fence 9 is located on the outer edge of the saddle 3, and the movable safety fence 15 is located on the inner edge closer to the club 6, so that the operator (not shown) can safely walk on the saddle 3. It is possible to walk safely between the fence 9 and the movable safety fence 15, and
Work on the saddle 3 can also be performed safely.

When the club 6 travels on the rails 5, 5 to the stopper 10 position when the traveling crane is in operation, the movable safety fence 15 closes each end of the club 6, as shown in FIG. Pushed by the pressing tool 20, the roller 16 moves upward in the groove 19 between the inclined guide rails 13, 13 against the weight of the movable safety fence 15.

As a result, the movable safety fence 15 moves until it approaches the outer safety fence 9, and the running range of the club 6 is secured up to above the saddle 3.

Next, when the club 6 returns to the center of the rail 5 again, the movable safety fence 15 descends due to its own weight and moves inward to return to its original position.

It goes without saying that the embodiment of this invention is not limited to the above-mentioned embodiment, and various embodiments can be adopted.

<Effects of the invention> As described above, according to this invention, a rail is provided between a pair of opposing saddles to allow the club to run freely, and a safety fence is provided at the outer edge of the saddle. In the traveling crane, by making the movable safety fence on the saddle movable in the club traveling direction, when the club is located in the center of the rail, the movable safety fence is located on the club side of the saddle. walking of the operator on the saddle; and
This has the excellent effect of ensuring safety when working on the saddle.

Also, when the club moves above the saddle,
Since the movable safety fence moves upward to secure the range of movement of the club, there is also the effect of ensuring that the movement of the club is carried out over a wide area.

Furthermore, by creating a movable safety fence using the pushing force of the club, there is an advantage that the structure can be simplified and manufacturing costs can be reduced.

Furthermore, when the movable safety fence is released from the pressure of the club, the movable safety fence naturally returns to its initial position and stops due to its own weight, so there is an advantage that there are fewer failures.

Since the movable safety fence is fixed to a bracket that has a pair of rollers in the longitudinal direction of the guide rail and is configured to extend upward, the bracket always moves up and down in a fixed tilted position with respect to the guide rail. Therefore, the movable safety fence installed on the bracket can always be raised, lowered, and moved in a fixed position.
The movable safety fence has the advantage of being able to always move in a fixed position, without rattling, and thereby preventing wear and breakdown, ensuring safe walking and work on the saddle. The effect is produced.

Moreover, since the bracket can always move up and down and move in a fixed position on the guide rail, it does not get caught, and has the advantage of being able to move along with the movement of the club and reset to the initial position. effect is produced.

Note that when the operator is on the saddle, the overhead crane is stopped and the operator will not be pinched, but just in case, a device is installed to detect when the operator is on the saddle. It is also easy to provide an interlock that cuts off the club's power source.

[Brief explanation of the drawing]

Figure 1 is a slope view of a conventional traveling crane.
Figure 2 and below show one embodiment of this invention.
Figure 2 is a side view showing the movable safety fence located on the outside edge of the club on the saddle, Figure 3 is a front view of the movable safety fence, Figure 4 is a side view of the movable safety fence, and Figure 4 is a side view of the movable safety fence. FIG. 5 is a side view showing the movable safety fence moved upward in the direction of club travel, and FIG. 6 is an enlarged front view of the fixed bracket. 3...Saddle, 5...Rail, 6...Club,
9... Safety fence, 15... Movable safety fence, 13...
...Guide rail, 18...Roller, 17...Bracket.

Claims (1)

[Scope of utility model registration request] In a traveling crane, a rail is provided between a pair of opposing saddles, a club is attached to the rail so as to be freely movable, and a safety fence is fixed to the outer edge of the saddle. A movable safety fence attached to the safety fence of the club is fixed to a bracket having a pair of longitudinal rollers on a guide rail diagonally installed on the saddle with respect to the club, and is movable vertically and longitudinally. A traveling crane characterized in that it is equipped to freely come into contact with and separate from a club.