RU2491200C2 - Hand handling car - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to hand cars in-shop transfer of cargoes at minor distances. Proposed car comprises the frame composed of bearing posts 1 with wheels 6, platform 2, lifting mechanism 3 and pallet 4. Lifting mechanism 3 is mounted at platform 2 and may be composed of screw pair, winch or hand hoist. Detachable horizontal pallet is arranged on aforesaid frame between post wheels and platform 2. Said pallet may be composed of metal grate, separate metal clevises, or a wooden board.

EFFECT: simplified design, lower weight and costs.

5 cl, 3 dwg

Description

The invention relates to hand trucks for transporting goods and can be used in any enterprises and personal farms in conditions where there is a need to lift and move goods over short distances.

Various hand trucks for transporting goods are known. So the trolley for transporting barrels according to Russian patent No. 2167076, IPC B62B 3/06 contains a frame, wheels, means for raising and lowering the barrels.

The trolley according to the patent of Russia No. 2375228, IPC B62B 3/04 has a similar design.

The Pallet Trans product catalog contains a wide range of hydraulic hand trolleys, platform trolleys, and load trolleys (The “Lifting equipment” product catalog of the Pallet Trans company network, February 10, 2011, http: //www.pt- ural.ru/catalog/prod18.html, http://www.pt-ural.ru/catalog/prod17.html, http://www.pt-ural.ru/catalog/prod97.html). The design feature of all modifications of the handcarts presented in the catalog is the presence of a frame, wheels, and means for placing goods.

As a prototype of the proposal, a lifting trolley with a lifting platform of the LMG-100 model was selected, which is a frame on wheels and a platform mounted on it in the form of a table equipped with a mechanism for lifting and lowering the load placed on the platform.

This trolley is designed to move various small loads. Due to its compact size, this trolley is perfect for work in the catering departments of bars, restaurants and cafes. The lifting trolley is suitable for transporting raw materials in the production or transportation of finished products. It provides the ability to move the load and lift it up by 1,500 mm, which allows to optimize warehouse and production processes (http://www.pt-ural.ru/catalog/prod97.html).

However, the presented design of the trolley has a number of drawbacks, namely, it does not provide the ability to install cargo on a platform weighing more than 50 kgf without using other lifting mechanisms, devices or muscular strength. In addition, the trolley itself is difficult to manufacture, since it uses a hydraulic cylinder that is difficult to manufacture, which means its cost is high. In addition, for mobile movement from one enterprise to another, it is necessary, at a minimum, to have a trailer for a passenger car, which is also one of the disadvantages of this trolley.

The objective of the invention is to eliminate the disadvantages of the prototype, namely, the creation of light, simple, transportable and cheap in the manufacture of a lifting trolley, providing the possibility of lifting directly from the floor or from the ground cargo weighing more than 50 kg without using other lifting mechanisms and moving it from one workplace to another.

The problem is solved in that in the trolley for the carriage of goods, including a frame with wheels, a horizontally located platform and a lifting mechanism, the frame is formed by supporting racks with wheels and a platform mounted on the upper part of the racks, while the lifting mechanism is mounted on the platform, and between the wheels racks and a platform on the frame mounted removable horizontally located pallet.

In addition, the lifting mechanism is made in the form of a vertically mounted screw pair, the nut of which is rigidly fixed to the platform, and the screw is equipped with a manual drive for longitudinal movement, made, for example, in the form of a steering wheel, and a grip for joining the load.

In addition, the lifting mechanism is made in the form of a winch or hoist.

In addition, the frame is made of pipes or profiles and is equipped with removable or rotary expansion ties.

In addition, the pallet is made in the form of a metal grill, individual metal staples or in the form of a wooden shield.

The invention is illustrated by drawings, where in Fig.1 shows a trolley in a preparation position for lifting a load, on. figure 2 shows the trolley in the transport position of the cargo, figure 3 - moving the trolley with the load uphill.

A manual lifting trolley includes a frame formed by support legs 1 and a platform 2 mounted on the upper part of the racks, as well as a lifting mechanism 3 and a pallet 4.

Flanges 5 are welded to the supporting posts 1, to which the wheels are attached 6. The frame size H is made so that the load 7, which must be moved from one section to another, can enter the formed span S in length or width. A lifting mechanism is installed on platform 2 3. The support posts 1 are made of aluminum or steel pipes of round or square cross-section with a diameter (diagonal) of 30-50 mm. Racks 1 and platform 2 are interconnected in various ways: by welding, bolted joints, bolted conical joints, wedge locks, etc. In the area of the pallet 4, the racks 1 are interconnected by removable or rotary ties 8, which provide the necessary rigidity of the frame. The frame can be made in various versions: in the form of a tripod, in the form of a rectangular prism, a truncated pyramid, etc.

The lifting mechanism 3 is made either in the form of a screw pair, including a screw 9 and a threaded sleeve 10, or in the form of a winch 11 and a manual hoist (not shown in the drawing). The screw 9 is equipped with a gripper 12 for connecting to the load 7 using a sling or a rod 13. On the shank of the screw 9, a drive is installed in the form of a steering wheel 14, ring spanner or handle (not shown in the drawing).

The pallet 4 is made in the form of a quick-detachable metal grate, metal staples, or in the form of a wooden shield, which are simply stacked on the screeds 8 connecting the racks 1.

Wheels 6 have the ability to rotate both around the vertical and around the horizontal axles and are equipped with brakes. The weight of the trolley designed for lifting and moving cargo weighing 500 kgf without an installed pallet 4 does not exceed 40 kgf.

Work on lifting and moving cargo.

A trolley prepared for lifting load 7 bumps onto a load lying on the floor (ground), so that its center of gravity is on the same axis as the axis of the lifting mechanism, while one or more couplers 8 and pallet 4 are removed, and the wheels are braked. Cargo 7 is connected with a lifting mechanism 3 by means of a sling or chuck 13. Turning the steering wheel 14, the cargo is raised to a level to a position where it is possible to install 1 pallet 4 on the support posts. The removed ties 8 are installed on the posts 1, then the pallet 4 is placed. With the steering wheel 14, the load 7 is lowered onto the pallet 4, the wheels 6 are released. The trolley is ready to move the load. In the case of a large weight of the cargo and the need to move it uphill, the trolley can be engaged with a winch 11.

Unloading cargo after moving it to a given place is done in the same way. With the handle 14, the load 7 is lifted above the pallet 4, the pallet 4 is removed from the support posts 1. Then the load is lowered by the steering wheel 14 to the floor (ground). The cart is taken out from under the load 7, while one of the screeds 8 can be removed. Ties 8 can not be removed at all, because two people will freely lift the light trolley over the load and rearrange it to the side. After that, the pallet 4 is installed on the supporting posts 6.

The proposed trolley is simple and cheap to manufacture, it allows lifting a heavy load lying directly on the floor or on the ground, placing it on a pallet, moving it manually (or using a winch when moving it uphill) to another workstation and unloading at the delivery point without using other hoisting mechanisms. In the case of a non-welded version of the connection of the support posts 1 and platform 3, due to the ability to make simple assembly-disassembly and low weight, the trolley is easily transported to another place of work in a passenger car.

Currently, design documentation is being developed. Studies show that the weight of the lifting trolley for lifting and moving cargo weighing 500 kgf, having dimensions 800 × 500 × 400 mm, does not exceed 40 kgf, its dimensions do not exceed the following dimensions: length - 1000 mm; width - 650 mm, height - 1200 mm.

The proposal is recommended for implementation.

Claims (5)

1. Hand truck for the transport of goods, including a frame with wheels, a horizontally located platform and a lifting mechanism, characterized in that the frame is formed by support racks with wheels and a platform mounted on the top of the racks, while the lifting mechanism is mounted on the platform, and between the wheels racks and a platform on the frame mounted removable horizontally located pallet. 2. The hand truck according to claim 1, characterized in that the lifting mechanism is made in the form of a screw pair, the nut of which is mounted on the platform, and the screw is equipped with a manual drive for longitudinal movement, made, for example, in the form of a steering wheel, and a grip for connecting the load. 3. The hand truck according to claim 1, characterized in that the lifting mechanism is made in the form of a winch or hoist. 4. The hand truck according to claim 1, characterized in that the frame is made of pipes or profile and is equipped with removable or rotary expansion ties. 5. The hand truck according to claim 1, characterized in that the pallet is made in the form of a metal grill, individual metal staples or in the form of a wooden shield.

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