RU120958U1 - CARRIAGE OF A BRIDGE CRANE WITH A DEVICE FOR ENSURING ACCESS TO LUMINAIRES - Google Patents

Abstract

Cargo trolley of an overhead crane with a device for providing access to lamps, containing a trolley frame with a support fixed on it, equipped with a ladder, a platform with a vertical fence, characterized in that the platform is installed with the possibility of lifting and lowering it on a scissor-type lifting mechanism located on the support and a hand-operated lifting and lowering mechanism with the ladder located inside the support.

Description

The utility model relates to hoisting and transport machinery, in particular to equipment for servicing workshop electric lighting devices (fixtures) located in the inter-truss space of industrial buildings equipped with overhead cranes and can be used in all industries.

Known truck crane overhead crane, including a frame with horizontal platforms installed on both sides, equipped with vertical fences (AS USSR No. 1350102. IPC B66C 11/00, priority from 01/10/1986, publ. 07.11.1987).

However, the functionality of the known trolley is limited due to the fact that the service platform on the cargo truck of the bridge crane is not adjustable in height, as a result of which the device cannot be used in the spans of buildings with different distances from the platform of the cargo truck of the bridge crane to the lower truss belt buildings, which reduces the working area of the service fixtures.

A cargo truck of an overhead crane is known, including a frame of a cargo truck, on which a base is installed in the form of a platform with a vertical fence located on two racks rigidly fixed to the frame of the cargo trolley, while one of the racks is made in the form of a ladder (Patent RU No. 9212 U1, IPC V66C 11/00, priority dated June 17, 1998, publ. February 16, 1999).

However, the truck’s functionality is limited by the fact that the service platform is not adjustable in height, as a result of which the device cannot be used in flights of buildings with different distances from the truck crane platform of the overhead crane to the lower belt of the building truss, which reduces the working area for the maintenance of the lamps.

The task to which the claimed utility model is directed is to increase the working area for servicing luminaires located in the inter-farm space of industrial buildings by supplying a truck crane of a bridge crane with a device with an adjustable lifting height.

The problem is achieved in that in the cargo truck of an overhead crane with a device for providing access to the fixtures, containing a frame with a support fixed to it, equipped with a ladder, a platform with a vertical fence, according to a utility model, the platform is installed with the possibility of lifting and lowering it on a lifting mechanism scissor type, located on a support and equipped with a manual drive mechanism for raising and lowering, while the ladder is located inside the tower.

The location of the platform of the device of the cargo truck on the scissor-type lifting mechanism mounted on the tower, and the provision of a manual drive of the lifting and lowering mechanism, significantly increases the working area for the maintenance of lamps and allows the device to be used in the spans of buildings with different distances from the platform of the cargo truck of the bridge crane to the lower belt farm buildings.

The implementation of the support in the form of a tower and the location of the stairs inside the tower ensures the reliability of the design of the device, allows you to minimize the overall dimensions of the platform of the cargo trolley, which increases the level of safety of staff.

Figure 1 shows a cargo trolley with a device for providing access to the lamps, a General view;

figure 2 shows a device for providing access to the fixtures, equipped with a lifting platform with a mechanism for raising and lowering;

figure 3 shows the location of the drive of the lifting mechanism, isometry;

figure 4 shows the location of the hatch and key mechanical drive on the site, top view.

The cargo truck of an overhead crane with a device for providing access to the luminaires comprises a support in the form of a tower 2 installed on the platform of the trolley 1 of an overhead crane (Figs. 1, 2). The tower 2 is mounted on the trolley 1 so as not to interfere with the maintenance of the main equipment of the crane and is attached to the trolley 1 with bolts (not shown in the drawing). On the tower 2 there is a scissor-type lifting mechanism 3, on which a platform 4 is placed (Fig. 2). The platform 4 is equipped with a vertical guard 5. The lifting mechanism 3 is equipped with a mechanical screw drive 6. The drive 6 is installed vertically, one end of which passes through the platform 4 and is equipped with a key 7, which is used for manual control from the platform 4. The other end of the drive 6 is included in the screw pairs 8 mounted on the crossbars 9 between the links 10 of the lifting mechanism 6 (figure 3). To ensure the lifting and lowering of the platform 4, the ends of the links 10 of the lifting mechanism 3 are fixed on one side on the fixed axes 11 on the tower 2 and the platform 4, and the opposite ends of the links 10 are equipped with rollers 12 installed in the grooves of the tower 2 and the platform 4. The key 7 is removable and fixed by a chain 13 to the vertical fence 5 (Fig.2, 4). On site 4, a parking space for the key 7 is provided, made in the form of a tube 14. Parking for the key 7 is necessary in order to avoid interference with the maintenance of the lighting fixtures in the shops of the enterprise. At site 4, a manhole with a hinged lid 15 is made for safety reasons when servicing the fixtures (Fig. 4). Inside the tower 2 is a vertical ladder 16 (figure 2). At the bottom of the platform 4, a ladder is installed, made in the form of a circular frame 17, which simultaneously serves as a fence (Fig.2, 3).

To carry out the work, the maintenance personnel from the gallery of the overhead crane moves to the trolley 1 of the overhead crane and ascends the platform 4 via the stairs 16 of the tower 2 and the frame 17, having previously opened the hatch cover 15. Entering platform 4, the hatch cover 15 is closed to ensure safe operation. To raise the platform 4 to the required level of height, the staff removes the key 7 from the tube 14 and installs it on the mechanical drive 6 of the lifting mechanism 3. By rotating the key 7 in one direction, the drive 7 is actuated by unscrewing it from the screw pairs 8 fixed on the crossbars 9 the lifting mechanism 3 and moving the rollers 12 links 10 in the grooves of the lifting mechanism 3 and the platform 4. The lifting mechanism 3 raises the platform 4 until the rotation with a key 7. The lifting height of the platform 4 staff Uhlir own. Having risen to the required height, stop rotation, the key 7 is returned to the parking place (tube) 14. The lamps are serviced. At the end of the work, maintenance personnel lower the platform 4 down to the stop. For this, the key 7 is installed on the actuator 6 and rotate in the opposite direction. After the platform 4 is lowered, the key 7 is returned to the parking place (tube) 14. Then open the hatch cover 15 and go down the stairs 17, fixed under the platform 4 and the stairs 16 of the tower 2.

Thus, the use of a trolley with a device for providing access to the luminaires expands the service area of luminaires located in the inter-truss space of the building and allows their service to be quickly, conveniently and safely.

Claims (1)

A cargo crane of an overhead crane with a device for providing access to the luminaires, comprising a trolley frame with a support fixed to it, equipped with a ladder, a platform with a vertical fence, characterized in that the platform is installed with the possibility of its raising and lowering on a scissor-type lifting mechanism located on the support and equipped with a manual drive mechanism for raising and lowering, while the ladder is located inside the support.