KR200208146Y1 - An apparatus for opening and shutting of pantagraph shoe in over head crane - Google Patents

Abstract

The present invention relates to an open / closed current collector of an overhead crane, which allows the link assembly mounted on the overhead crane to be lifted and lowered and rotated as necessary, and also cleans the surface of the trolley bar, which is a movement path of the shoe mounted on the link assembly. This prevents the shoe from falling off and premature wear and is easy to repair.

The configuration for this purpose, the rotary support shaft 12 mounted to rotate in a vertical state via the bearing (11) to the frame (2) of the overhead crane; A sliding body 14 mounted to slide along the rotation support shaft 12; A cylinder 18 mounted to rotate the rotation support shaft 12 by a predetermined angle; The rotation is provided by providing a path of a plurality of wheels 33 installed at a lower end of the link assembly 30 fixed to the sliding body 14 and forming a concave groove 20a downward in a position corresponding to the wheels 33. A guide rail 20 fixed to the frame 2 to have the same center as the support shaft 12; A rubber roll 52 mounted on one side of the link assembly 30 to idle along the upper surface of the trolley bar 90; And a brush roll 54 connected to the rubber roll 52 via the gears 53 and 55.

Description

An apparatus for opening and shutting of pantagraph shoe in over head crane}

The present invention relates to an open / closed current collector of an overhead crane, and more particularly, to enable the link assembly mounted on the overhead crane to move up and down as needed, and to move the shoe of the trolley bar, which is a movement path of the shoe mounted on the link assembly. The present invention relates to an open / close current collector of an overhead crane, which enables the surface to be cleaned to prevent the shoe from falling off and premature wear, and to facilitate repair thereof.

In general, the fantagraph shoe, which is a current collector that is supplied with electricity from the trolley bar and can be supplied to the overhead crane, is mounted on the overhead crane via a link assembly so that the shoe slides on the upper portion of the trolley bar. Moving with the overhead crane, the electricity supplied from the trolley bar is continuously provided to the overhead crane.

In addition, the link assembly consists of a plurality of link rods, one side of which is fixed to the overhead crane by welding, and the other side of which is fixed to the shoe, and thus the structure of the link assembly is not suitable for absorbing temperature changes or shocks. Of course, the link assembly is provided with the elastic force of a predetermined size to contact the trolley bar at an appropriate pressure.

That is, the link assembly integrally fixed to the overhead crane has a structure for preventing the shoe from overturning when the trolley bar is excessively deformed due to changes in ambient temperature, passing through the joint part of the trolley bar, or by other causes. Current collector with the main switch powering off the trolley bar when it is necessary to make urgent repairs, such as when the shoe is overturned or prematurely worn out and falls out, or when performing routine inspections. Should be repaired.

However, when the main switch for supplying power to the trolley bar is turned off, not only the overhead crane that has failed but also the operation of other overhead cranes that are being supplied with power on the same line also have a problem of lowering productivity. Therefore, since the work of repairing the link assembly and the shoe fixed to the overhead crane must be performed in a narrow place, the work was very difficult and the risk of safety accident was very high.

The present invention has been devised to solve such a conventional problem, and its purpose is to allow the link assembly mounted on the overhead crane to move up and down as necessary, and to rotate the trolley bar which is a movement path of the shoe mounted on the link assembly. The present invention provides a retractable current collector of an overhead crane that prevents the shoe from falling off and premature wear by allowing the surface of the shoe to be cleaned.

1 is an external perspective view showing an openable current collector of an overhead crane according to the present invention;

Figure 2 is a plan view showing an openable current collector of the overhead crane according to the present invention;

Figure 3 is a front view showing an openable current collector of the overhead crane according to the present invention;

Figure 4 is a detailed view showing the rubber roll and brush roll installed in the device of the present invention;

5 is an explanatory diagram showing a state in which the apparatus of the present invention operates.

Explanation of symbols on the main parts of the drawings

2: frame 10: bearing support block

11: bearing 12: rotating support shaft

14: sliding body 16: pinion

17: rack 18: cylinder

20: guide rail 20a: groove

30: link assembly 40: shoe

42: shoe support 50: extension

52: rubber roll 53, 55: gear

54: brush roll 90: trolley bar

92: wires

As a technical configuration for achieving the above object, the present invention is connected to one side of the overhead crane via a link assembly of the overhead crane to supply power to the overhead crane by a shoe sliding in contact with the upper surface of the trolley bar A current collector, comprising: a rotation support shaft mounted to a frame of an overhead crane in a state perpendicular to the bearing; A sliding body mounted to slide on the rotation support shaft; A cylinder mounted to rotate the rotation support shaft at a predetermined angle; A guide fixed to the frame to provide a path of a plurality of wheels installed at a lower end of the link assembly fixed to the sliding body and to form a concave recess downward in a position corresponding to the wheel to have the same center as the rotation support shaft rail; A rubber roll mounted on one side of the link assembly to idle along the upper surface of the trolley bar; And, a brush roll connected to the rubber roll via a gear; and by providing an openable current collector of the overhead crane.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an external perspective view of the openable current collector of the overhead crane according to the present invention, Figures 2 and 3 are a plan view and a front view, the bearing support block 10 is fixed to the frame (2) constituting the overhead crane .

The bearing support block 10 supports the lower end via the bearing 11 so as to be rotatable while the rotation support shaft 12 is maintained in a vertical state, and the rotation support shaft 12 is a hollow pipe-type slide. In order to prevent the body 14 from sliding relative to each other, and to prevent relative rotation between the rotary support shaft 12 and the sliding body 14, the outer surface of the rotary support shaft 12 A groove 14a is formed on the inner surface of the sliding body 14 having a rotation preventing jaw 12a having a predetermined length along the longitudinal direction and into which the rotation preventing jaw 12a is fitted. That is, when the rotary support shaft 12 rotates clockwise or counterclockwise at a predetermined angle, the sliding body 14 also rotates together at the same angle and the same direction as the rotary support shaft 12.

The pinion 16 is mounted to the lower end of the rotation support shaft 12, and the rack 17 is installed to engage the pinion 16, and the rack 17 is mounted on the frame 2 with the bracket 19. By being fixed to the end of the rod 18a of the cylinder 18 fixed integrally via the medium, when the cylinder 18 is operated to move the rod 18a forward and backward, the rack 17 fixed to the rod 18a is moved back and forth. This causes the pinion 16 to rotate, thereby rotating the rotation support shaft 12. In addition, the extension 17a is formed on one side of the rack 17, and the limit switch 17b for fixing the limit switch operation is fixed at the end thereof, and the limit switch 17c provided on the traveling path of the striker 17b. Is operated by the striker 17b so that the internal contact can be turned on / off.

The frame 2 is provided with an annular guide rail 20, the guide rail 20 is the frame 2 so as to have the same center as the rotation support shaft 12 via a plurality of supports (22) ) Is fixed to the upper end of the guide rail 20 is formed with a recess (20a) concave downward than other portions at a predetermined position.

The link assembly 30 is mounted to the sliding body 14, and the link assembly 30 has a body 32 fixed to the outside of the sliding body 14 through the insulator 31, and the A pair of links (34a) and (34b), one end of which is rotatably mounted on the body (32) via a pin (35), and the other end of the links (34a) and (34b) are connected through a pin (37). It includes a connecting link 36, the pin 35 is disposed at the upper and lower ends of the body 32, respectively. In addition, the upper link 34a is provided with an elastic restoring force by the elastic spring 38 so that the shoe 40 mounted on the link assembly 30 via the connecting rod 39 is predetermined on the trolley bar 90. It is possible to contact with a pressure of, the lower end of the body 32 is equipped with a plurality of wheels (33).

The wheels 33 may be positioned on the upper surfaces of the guide rails 20, respectively, and each of the wheels 33 may be guide rails when the shoe 40 is in contact with the trolley bar 90. 20 into the groove 20a. This means that the groove 20a and the wheel 33 have a relationship with each other. When the wheel 33 rotates about the rotation support shaft 12 by a predetermined behavior, the wheel 33 is the groove. It is possible to move along the upper surface of the guide rail 20 located above the groove 20a apart from the groove 20a. That is, the groove 20a is formed in a plurality of places of the guide rail 20, the interval of which corresponds to the interval of the wheel 33. In addition, the shape of the groove 20a is preferably formed as shown in Fig. 5, which is a predetermined direction in the direction in which the wheel 33 located in the groove 20a moves by the cylinder 18. To form an inclined surface 20a 'inclined to have an inclination and vice versa to form a vertical vertical surface 20a' to prevent the movement of the wheel 33.

The shoe support 42 is fixed to the connecting rod 39 integrally, and the shoe 40 fixed to the lower portion of the shoe support 42 is in contact with the upper portion of the trolley bar 90 together with the ceiling crane. Move.

The shoe support 42 has a pair of parallel extensions 50 having the same direction as the trolley bar 90 and extending further forward and rearward than the shoe 40 based on the longitudinal direction of the trolley bar 90. And rotatably mount rubber rolls 52 at each end of the extension 50, and the rubber rolls 52 come into contact with the upper surface of the trolley bar 90 when idle with the ceiling crane. do. In addition, the rubber roll 52 is made of a material having a predetermined elastic modulus, and when the shoe 40 is mounted on the trolley bar 90 by components such as the link assembly 30, the shoe 40 is mounted on the trolley. It is possible to retract so as not to prevent being placed on the upper surface of the bar 90 with a predetermined force. That is, the rubber roll 52 and the shoe 40 together should be kept on the trolley bar 90 at a predetermined pressure. In addition, in order to prevent the rubber roll 52 from rotating relative to the trolley bar 90, that is, sliding, it is preferable to form an uneven protrusion 52a 'on the surface of the rubber roll 52. The protrusions 52a 'may be formed in a continuous manner in the longitudinal direction of the rubber roll 52 and arranged in plurality in a circumferential direction to be spaced apart from each other, or may have a concave-convex shape arranged in a lattice form along the circumferential direction as well as the longitudinal direction. .

In addition, the extension 50 is mounted so that the brush roll 54 is rotatable forward and rearward than the rubber roll 52 with respect to the rubber roll 52 in the longitudinal direction of the trolley bar 90. The gear 55 is fixed to the rotating shaft 54a of the brush roll 54, and the gear 55 is engaged with the gear 53 fixed to the rotating shaft 52a of the rubber roll 52. In addition, the brush roll 54 has a shape in which hair-like brushes 54a 'made of an iron core or thermosetting plastic having a predetermined hardness are densely planted on the surface of the brush roll 54.

The current collector 1 of the present invention having the above-described configuration may collect current through the shoe 40 in an initial state in which the rod 18a of the cylinder 18 is reversed, which moves the ceiling crane in a conventional manner. The shoe 40, which behaves together with the ceiling crane, is provided to the ceiling crane through the wire 92 supplied through the trolley bar 90 while slidingly sliding in contact with the upper surface of the trolley bar 90.

At this time, the rubber rolls 52 respectively positioned on the front and rear sides of the shoe 40 in the moving direction are also idling in close contact with the upper surface of the trolley bar 90, and the rotational force of the rubber roll 52 is It is transmitted to the brush roll 54 through the gears 53 and 55, so that the brush roll 54 rotates to clean the upper surface of the trolley bar 90 cleanly. This not only prevents the shoe 40 from sliding while being in contact with the surface of the trolley bar 90, but also by the coarse foreign matter attached to the trolley bar 90. 90) effectively prevent the current collector from falling apart.

If it is necessary to repair the shoe 40 or the linkage assembly 30 supporting the shoe 40 while performing the current collecting operation in this state, the power supply to the trolley bar 90 is not cut off. By operating the cylinder 18 to advance the rod 18a, the forward movement of the rod 18a rotates the pinion 16 through the rack 17, and the rotation of the pinion 16 is integrally therewith. The fixed rotating support shaft 12 is rotated.

As the rotary support shaft 12 rotates, the sliding body 14 rotates, and the rotation of the sliding body 14 rotates the link assembly 30 and the shoe 40 mounted thereto, and the link assembly Rotation of the 30 causes the wheel 33 mounted thereon to rise to the upper surface of the guide rail 20 along the inclined surface 20a ', which means that the sliding body 14 is moved upward and downward on the rotation support shaft 12. It is possible because it is equipped to slide.

That is, the sliding body 14 rises upward along the rotation support shaft 12, whereby the shoe 40, the rubber roll 52 and the brush roll 54 also move upward together with the trolley bar 90. Away from the top surface.

In addition, the rotation support shaft 12 and the sliding body 14 and the entirety of the apparatus 1 connected thereto may be rotated about the rotation support shaft 12 to a position suitable for repair.

In this state, the operator can perform a predetermined repair work such as exchanging necessary parts, such repair work is performed in a wider place as compared to the prior art as well as other ceilings powered by the trolley bar 90. Repair work can be done with the crane running.

Of course, when a predetermined repair work is completed, the device is operated in the reverse order to the above, and the overhead crane is operated by placing the shoe 40, the rubber roll 52 and the brush roll 54 on the trolley bar 90. Just do it.

As described above, according to the open / closed current collector of the overhead crane according to the present invention, the current collector is normally in contact with the trolley bar by cleansing the upper surface of the trolley bar by the brush roll which rotates in contact with the upper surface of the trolley bar. It solves the conventional problem that the contact between the shoe and the trolley bar was unstable due to the foreign matter attached to the upper surface of the trolley bar while preventing the wear of the sliding shoe.

In addition, when current collection is not performed normally and the shoe or other parts are required to be repaired, the shoe and other parts supporting the shoe may be removed from the trolley bar without disconnecting the power supplied to the trolley bar. By moving and repairing, the repair can be easily performed in a relatively safe place.

Claims (1)

In the current collector of the overhead crane, which is connected to one side of the overhead crane via a link assembly to supply power to the overhead crane by the sliding shoe in contact with the upper surface of the trolley bar, A rotating support shaft 12 mounted to the frame 2 of the overhead crane in a state perpendicular to the bearing 11 through the bearing 11; A sliding body (14) mounted to slide on the rotation support shaft (12); A cylinder 18 mounted to rotate the rotation support shaft 12 by a predetermined angle; The rotation is provided by providing a path of a plurality of wheels 33 installed at a lower end of the link assembly 30 fixed to the sliding body 14 and forming a concave groove 20a downward in a position corresponding to the wheels 33. A guide rail 20 fixed to the frame 2 to have the same center as the support shaft 12; A rubber roll 52 mounted on one side of the link assembly 30 to idle along the upper surface of the trolley bar 90; And, Brush roll (54) connected to the rubber roll (52) via the gear (53) (55); Opening and closing current collector of the overhead crane, characterized in that it comprises a.