RU2314224C2 - Device for transportation of loads up/down flights of stairs - Google Patents

Abstract

FIELD: transport engineering.

SUBSTANCE: invention relates to trolleys for moving loads up/down stairs provided with tires with inner supports. Cross bushing 16 coupled with rim 17 of tire 15 is arranged inside pneumatic tire. Shafts 18 are arranged on ends of bushing on axial rods 19. When moving up the stairs, air is discharged from tires 15 make shafts 18 engage with stairs steps through tire 15. Trolley has vertical and horizontal frames rigidly connected to each other, movable frame, axles installed on horizontal and movable frames, running gears installed on axles. Movable frame is hinge-connected with horizontal frame. Screw mechanism is installed between horizontal and movable frames to fold device by bringing front and rear axles close to each other and returning them into operating conditions by moving front and rear axles from each other. Folded up condition is used to turn device by means of swivel wheel with handle.

EFFECT: provision of transportation of heavy loads along even surface and up and down the stairs at confined space for turning on stairs landings.

6 dwg

Description

The invention relates to a device for transporting goods and can be used for transportation of goods by flights of stairs in residential and industrial buildings.

The following device is known: freight elevator. Lifting with a freight elevator is not always possible, since only 20% of buildings are equipped with freight elevators.

A device is known for lifting and feeding goods into window openings (RU 2250871C1, IPC 8 В66С 23/22, published May 24, 2005), which is a frame installed in a window opening, a swinging U-shaped boom equipped with damper devices in the form hydraulic cylinders with return springs, and a lifting winch.

The use of this device is not possible after finishing work on the premises of the building and installing expensive double-glazed windows in window openings.

A device for transporting goods along flights of stairs, which is a frame structure containing rigidly interconnected vertical and horizontal frames, a movable frame, axles mounted on a horizontal and movable frame, chassis mounted on axles / FR 2120301 A5, IPC B62B 3 / 06, B62B 5/02, B62B 3/04, publ. 1972.08.18 /. The known device does not provide lifting goods along the flights of stairs.

The task to which this device is directed is the transportation of heavy cargo by flights of stairs, the possibility of transportation without damage to the results of the finishing work of the stairwells of buildings.

The technical result is the mechanization of the process of transporting goods along flights of stairs.

The specified technical result is achieved by using a device for transporting goods along flights of stairs, which is a frame structure containing rigidly interconnected vertical and horizontal frames, a movable frame, axles mounted on a horizontal and movable frame, and running gears mounted on the axles. The movable frame is pivotally connected to the horizontal frame, a screw mechanism is installed between the horizontal and movable frames with the possibility of bringing the device into a folded state by maximally reducing the front and rear axles and returning to the normal state by maximally distant the front and rear axles. The folded state is used to rotate the device using a swivel wheel with a handle. Each undercarriage consists of a tire, a cruciform sleeve, a rim pressed onto the cruciform sleeve, rods rigidly connected to the cruciform sleeve, rollers pressed onto the rods, and the possibility of movement along staircases allows air to escape from the tires. Communication of the torque of the rear chassis is provided through a gear mounted on the output shaft of the gearmotor rigidly mounted on a horizontal frame and a gear mounted on the aforementioned axis mounted on a horizontal frame. The mechanism for securing the load is mounted on a vertical frame.

The vertical and horizontal frames of the device serve as the bearing base for the transported cargo. The undercarriage serves to convert rotational motion into translational motion of the device and is able to move both on a flat surface and along flights of stairs. To move on a flat surface, air is pumped into the tires of the chassis, after which they acquire a cylindrical shape. To move along staircases, air is released from the tires, as a result of which rollers mounted on rods rigidly connected to the cross-shaped sleeve begin to interact with the surface. The screw mechanism serves to bring the device into a folded state, characterized by the maximum reduction of the front and rear axles, and return to the normal state, characterized by the maximum distance of the front and rear axles. The folded state is used to rotate the device on the stairwells using the swivel wheel. The mechanism for securing the cargo serves to secure the cargo on a bearing base - horizontal and vertical frames.

The device is illustrated by drawings, where figure 1 shows a General view of a device for transporting goods along flights of stairs; figure 2 shows a top view of figure 1; figure 3 shows a right view of figure 1; figure 4 the device is shown in the folded state; figure 5 shows a General view of the chassis; Fig.6 is a sectional view of Fig.5.

The device is a frame structure made, for example, of channels, consisting of a vertical frame 1, a horizontal frame 2, rigidly interconnected, a movable frame 3, pivotally connected to a horizontal frame 2. The device also includes a swivel wheel with a handle 4, a screw mechanism 5, mounted between the horizontal frame 2 and the movable frame 3, the gear motor 6, rigidly mounted on the horizontal frame 2, working, for example, from an alternating current main voltage of 220 V, gear 7 mounted on the output Alu motor gearbox 6, front 8 and rear 9 axles mounted on the movable and horizontal frames, respectively, the chassis 10 mounted on the front 8 and rear 9 axles, a gear wheel 11 mounted on the rear axle 9. The load 12 is attached to the vertical frame 1 and the horizontal frame 2, for example, by means of a ratchet 13 mounted on the vertical frame 1, and fasteners 14 mounted on the horizontal frame 2. The chassis consists of a tire 15, a cross-shaped sleeve 16, a composite rim 17, pressed onto the cross-shaped sleeve 16 , rollers 18, made, for example, of rubber, rods 19, rigidly connected to the cross-shaped sleeve 16, the valve 20, which serves to fill the tire with air.

The device operates as follows.

The load 12 is fixed on a vertical frame 1 and a horizontal frame 2, for example, by a rope (not shown) using a ratchet mechanism 13 and fastenings 14. Loading is possible both in the normal state and in the folded state. From the tires 15 air comes down. Thus, the rollers 18 interacting with the surface are brought into contact with the surface via the tire 15. To start the movement, a gear motor 6 is turned on, which, through the gear 7 and the wheel 11, reports the torque of the chassis of the device 10. The chassis converts the rotational movement of the axis 9 into the translational movement of the device, overcomes the profile of the ladder, rolling along it on rollers 18 mounted on the rods 19 of the cross-shaped sleeve 16. Having reached the landing, the device is put into a folded state. The rotation of the device between the flights of stairs is carried out by a swivel wheel with a handle 4 in the folded state, characterized by the maximum reduction of the front and rear axles. After rotation, the device is transferred by a screw mechanism 5 to its normal state, characterized by the maximum distance of the front and rear axles, for movement along the next flight of stairs. The screw mechanism is driven manually, for example by a handle (not shown), or mechanized, for example by an electric motor (not shown). In the event of a lack of space on the landing, the device can operate in a semi-folded state. If it is necessary to transport cargo on a flat surface, the tires of the chassis are filled with air. Filling can be carried out manually, for example using a hand pump (not shown), or mechanized, for example using a tire pressure control system (not shown).

Claims (1)

A device for transporting goods along flights of stairs, which is a frame structure containing rigidly interconnected vertical and horizontal frames, a movable frame, axles mounted on a horizontal and a movable frame, chassis mounted on axles, characterized in that the movable frame is pivotally connected with a horizontal frame, a screw mechanism is installed between the horizontal and movable frames with the possibility of bringing the device into a folded state with the maximum reduction of the front and rear axles and return to normal condition with the maximum distance of the front and rear axles, while the folded state is used to rotate the device using a swivel wheel with a handle, each chassis consists of a tire, a cross-shaped sleeve, a rim pressed onto a cross-shaped sleeve, rods rigidly connected with a cross-shaped sleeve, rollers pressed onto the rods, and the possibility of movement along staircases ensures the release of air from the tires, the message of the torque of the chassis is ensured by Res gear mounted on the output shaft of a geared motor fixedly mounted on the horizontal frame and a toothed wheel mounted on said axis, mounted on the horizontal frame for lashing mechanism is mounted on the vertical frame.

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