JP2560029Y2 - Moving trolley for horizontal cable - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a mobile truck which has a wheel engaged with a cable stretched horizontally and a drive motor thereof, and in which a space for loading and unloading a building under construction is temporarily provided. TECHNICAL FIELD The present invention relates to a device for automatically opening and closing a safety net covering a vehicle, and a mobile trolley for horizontal cables useful as a trolley for a cable crane.

[0002]

2. Description of the Related Art Generally, at a construction site, unloading work is performed using a vertical space such as a floor of an atrium. This unloading space is usually open every 2 or 3 floors because the opening of each floor is always open. After the unloading operation is completed, the safety net is extended to close the opening. Opening and closing of the safety net is usually performed by slidably supporting both ends of the safety net with a ring or the like on a guide wire installed along both sides of the opening, and pulling the tip of the safety net with a tow rope. It depends on the manual opening and closing equipment that was made possible.

On the other hand, as shown in FIG. 4, a movable trolley 40 is movably mounted on a cable 1 composed of a wire rope disposed along the opening and closing direction of the safety net 32, and the safety net is automatically connected. An automatic opening / closing device for a safety net which can be opened / closed has been proposed.
No.). The movable trolley 40 is, as shown in FIGS.
A pair of front and rear wheels 22, 22 attached to the box 20 are locked from above with respect to the cable 1, and the cable 1 is elastically pressed from below by a pressing roller 28.
Further, the motive power of the drive motor 25 mounted below the box 20 is transmitted to the wheels 22, 22 via a drive transmission mechanism, so that the vehicle can run on its own. The drive transmission mechanism is a driven sprocket 2 coaxially connected to the wheels 22, 22.
A roller chain 27 is bridged between the drive sprockets 3 and 23 and the drive sprocket 26 attached to the output shaft of the drive motor 52. The pressing roller 28 is always connected to the wheel 2 by a spring disposed in the cylindrical body 29.
It is urged so as to press toward the sides 2 and 22, and the urging force can be adjusted by rotating the operation screw 29a.

As shown in FIG. 4, both ends of the safety net 32 are supported by a large number of rings 34 inserted into the cables 1 stretched between the stands 33 on the floor 30 of the building under construction. Is done. This safety net 32 is connected to the mobile trolley 4
The safety net 32 is opened and closed with respect to the unloading opening 30a of the building by being mounted on the vehicle and being self-propelled. Since the mobile trolley 40 is a self-propelled type, it can be opened and closed very easily without the need for manual indexing work and its work space, and it is easy to attach and remove the automatic opening and closing device to and from the cable. Is obtained. Therefore, the movable trolley 40 can also be applied as a movable body such as a trolley of a cable crane that runs on a single cable (corresponding to the cable 1) stretched horizontally.

[0005]

However, the movable trolley 40 of the conventional safety net opening / closing device is connected directly to the wheels 2 running on the cable 1 and is provided with a box 2 on the side of the wheels 22.
Since the drive motor 25 and the drive motor 25 are disposed, the wheel 22 is eccentrically set to the side of the wheel 22 when viewed from the cable 1, and there is a problem that the wheel 22 is easily detached from the cable 1 during traveling. The same applies to the case where the moving body is used as a moving body such as a trolley of a cable crane.
2 had a drawback that it was easily detached from the cable.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a mobile trolley for a horizontal cable in which the trolley is not eccentric when viewed from the cable and the wheels are not easily detached from the cable. .

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a self-propelled moving device having a wheel engaged with a cable stretched horizontally, and a driving mechanism arranged in a horizontal direction to rotationally drive the sheave. In the trolley, the wheels are composed of a bowl-shaped body covering a part of the drive mechanism and a wheel main body including a cable guide groove formed outside an edge portion thereof, and an output shaft of the drive motor is provided in the bowl-shaped body. The cable guide groove is attached to a bottom bearing portion so that the cable guide groove substantially matches the center of gravity of the movable carriage.

[0008]

[Function] In the carriage for horizontal cable of the present invention, the surface of the cable guide groove almost matches the center of gravity line of the entire carriage and is balanced. I will not do it. For this reason, the cable is always located at a deep position in the cable guide groove without being subjected to an action such as twisting, and a situation in which the wheels come off from the cable during traveling is avoided. This function and effect can be obtained in the same manner when used as a moving body such as a trolley of a cable crane.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIGS. 1 and 2, reference numeral 2 denotes a bogie frame of the mobile bogie 40, which is an L-shaped intermediate connecting portion 2a extending in the lateral direction when viewed from front and rear in the bogie traveling direction, and one end thereof. It comprises an upper extending portion 2b and a lower extending portion 2c hanging in an inverted L-shape on the other end side of the intermediate connecting portion 2a. That is,
The upper extending portion 2b and the lower extending portion 2c are provided stepwise.

An electric drive motor 3 equipped with a speed reducer 4 is attached to the inner surface of the downward extension 2c by a screw 5, and an output shaft 6 of the speed reducer 4 is a bearing for a wheel 7. The boss 7a is fixed. Drive motor 3, reducer 4
Constitutes a drive mechanism. The wheel 7 includes a bowl-shaped body 8 covering the reduction gear 4 including the intermediate connecting portion 2a and the downward extending portion 2c.
And a wheel body 9 having a cable guide groove 9a formed on the outer periphery of an edge portion of the bowl-shaped body. The boss 7a is provided at the center of the bottom of the bowl-shaped body 8, and an output shaft 6 from the reduction gear 4 is provided. Fixed to At this time, the intermediate connecting portion 2a and the downward extending portion 2c are put into and covered by the bowl-shaped body 8 of the wheel 7, and the surface of the cable guide groove 9a outside the edge of the bowl-shaped body 8 is It is positioned so as to substantially coincide with the center of gravity line. still,
An appropriate number of rims 7b are formed on the outer surface of the bowl 8 radially from the wheel boss 7a.

The reason why the wheels 7 are formed in a bowl shape is as follows.
By immersing the output side of the electric drive motor 3 in the bowl 8 of the wheel 7, the position of the wheel body 9 is shifted near the middle of the electric drive motor 3, and the plane of the wheel body 9 is moved
This is to ensure that it always matches the center-of-gravity line of all zeros.
Therefore, as long as such a relationship is maintained, the bowl-shaped body 8 does not necessarily need to be formed as a cup-shaped cup, and may be constituted by only the rim 7b as needed. Further, the intermediate connecting portion 2a and the downward extending portion 2c are
Are placed in the bowl-shaped body 8 of
Although the size is regulated by the size of the wheel bowl 8, it can be arbitrarily determined as long as it can enter the bowl 8 of the wheel 7.

On the other hand, when viewed from a direction (side surface) perpendicular to the traveling direction of the bogie, the upwardly extending portion 2b is provided with the bowl-shaped body 8 of the wheel 7 described above.
The width of the intermediate connecting portion 2a, which is regulated by the size, is fan-shaped from both ends. In this fan-shaped upper extending portion 2b,
Cable guides 10 and 11 for guiding the cable 1 made of a wire rope are provided at both upper ends of the inner surface, that is, both front and rear ends in the traveling direction of the bogie. In this embodiment, the pair of front and rear cable guides 10 and 11 are each formed of a cylinder having a guide hole 12 through which the cable 1 is inserted. Cable guide 10 and cable guide 1
The guide position for the cable 1, here, the position of the guide hole 12, is set in a direction perpendicular to the traveling direction of the bogie (lateral direction) by an interval at which the cables 1 are arranged side by side in the cable guide groove 9 a of the wheel body 9. ) Are shifted from each other.

The cable 1 first passes through the guide hole 12 of the cable guide 10, and then goes around the cable guide groove 9 a of the wheel body 9 to make a round.
Exit from trolley 1 through 2. In this case, since the positions of the guide holes 12 of the cable guide 10 and the cable guide 11 are displaced as described above, the cable 1 is aligned in two lines in the cable guide groove 9 a at the upper part of the wheel body 9.

According to the mobile trolley 40 having the above-described structure, the surface of the cable guide groove 9a of the wheel 7 substantially coincides with the center of gravity of the mobile trolley 40. It is not eccentrically positioned on the side of the wheel 7. That is, since the cable 1 is always located at a deep position in the cable guide groove 9a without being subjected to an action such as twisting, an accident that the wheel 7 comes off from the cable 1 during traveling is prevented. This effect can also be obtained when used as a moving body such as a trolley of a cable crane.Even if the moving body runs on a cable and the load is light, the entire moving body is inclined. And the situation that the wheels come off the cable can be avoided.

The method of using the safety net opening / closing device is the same as that already described with reference to FIG. 4, and the cable stretched between the stands 33 on the floor 30 of the building under construction. A large number of rings 34 inserted through 1 support both ends of the net, and this safety net 32 is attached to a movable trolley 40 to run on its own, thereby opening and closing the safety net 32 with respect to the opening 30a for discharging the building. Do. In this case, the drive motor 3 may be connected to the control device 37 via an electric cable 36, and the drive switch for the forward / reverse rotation may be controlled by an operation switch 38 belonging to the control device 37, or may be wireless. The safety nets 32 on each floor may be opened and closed simultaneously.

[0016]

[Effects of the Invention] As described above, the horizontal cable moving trolley of the present invention has the surface of the cable guide groove of its wheel almost matching the center of gravity of the entire moving trolley. It is not eccentrically positioned on the side of the wheel when viewed from the cable. For this reason, a situation in which the wheels are disconnected from the cable during traveling is avoided. Therefore, from the viewpoint of safety management, it is suitable for constructing an automatic opening / closing device for a safety net, a cable crane, and the like.

[Brief description of the drawings]

FIG. 1 is a side view of a mobile trolley for a horizontal cable according to an embodiment of the present invention.

FIG. 2 is a partially cutaway front view of the horizontal cable moving trolley of FIG. 1;

FIG. 3 is a schematic perspective view of a conventional carriage for horizontal cables.

FIG. 4 is a diagram showing a conventional automatic opening and closing device for a safety net constructed with the movable cart of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cable 3 Drive motor 4 Reduction gear 7 Wheel 7a Boss part (bearing part) 8 Bowl-shaped body 9 Wheel body 9a Cable guide groove 40 Moving carriage

Claims (1)

(57) [Scope of request for utility model registration] 1. A self-propelled moving carriage having wheels engaged with a cable stretched horizontally and a drive mechanism arranged in a horizontal direction to rotationally drive the sheaves, the wheels being driven by A bowl-shaped body covering a part of the outside of the mechanism and a wheel body composed of a cable guide groove formed outside the edge portion thereof, and an output shaft of the drive motor is attached to a bearing at a bottom of the bowl-shaped body; A mobile trolley for a horizontal cable, wherein the cable guide groove substantially matches the center of gravity of the mobile trolley.