RU2112683C1 - Hand trunk - Google Patents

Abstract

FIELD: materials handling facilities; transportation of different loads, including long-cut ones. SUBSTANCE: truck has two detachable Ш- shaped longitudinally mounted adapters 6, each being provided with three vertical posts 8 whose upper ends have fastening units to mating members mounted on outer side of body bottom, and lower ends are connected by horizontal tie-rod 10. Units for longitudinal attachment of wheels, similar to those found on body, are arranged in places of connection of posts and tie-rod. Minimum longitudinal distance between units of wheel fastening on adapter exceeds diameter of wheel outer surface by 20 mm. Minimum cross distance between adapters provides location of two or more wheels in between. Adapters have additional wheel fastening unit arranged in their middle lower than common level of wheel fastening places by 10-50 mm and are connected by cross ties provided with place for longitudinal attachment of wheel. EFFECT: enlarged operating capabilities. 4 cl, 7 dwg

Description

 The invention relates to vehicles, namely to hand trucks designed for the transport of various goods.

 For transportation of goods along narrow paths, decks, etc. often used unicycle trolleys - wheelbarrows [1].

 However, the transportation of goods on such trolleys leads to great labor costs, since the cargo is located between the wheels and the handle and is largely transferred to the person’s hand. In addition, significant efforts must be made to keep the trolley in equilibrium in the lateral direction.

 The most common applications for the transport of goods in everyday life were carts with a horizontal position of the body [2].

 Such trolleys, having a sufficient gauge and, therefore, good lateral stability, in many cases do not provide the ability to transport goods along paths, narrow decks, etc., which makes it impossible to operate in such conditions. In addition, such trolleys are not suitable for the transport of long loads (for example, long timber or metal).

 A hand truck is proposed, equipped with two removable, W-shaped, longitudinally arranged adapters, each of which has three vertical racks, the upper ends of which are equipped with attachment points to mating elements on the outer side of the bottom of the body, and the lower ones are interconnected by a horizontal rod, at the same time, in the joints of the struts and traction there are nodes for longitudinal wheel mounting, similar to those on the body, and the minimum longitudinal distance between the wheel mounting nodes on the adapter is greater the diameter of the outer surface of the wheel by 20 mm, and the minimum transverse distance between the adapters ensures the location of two or more wheels between them, in addition, the adapters are equipped with an additional wheel mount, located in the middle part below the general level of the wheel mount 10-50 mm . Adapters are interconnected by transverse couplers provided with a place for longitudinal wheel mounting.

 At the same time, the operational capabilities of the trolley are significantly expanded by changing the gauge, which allows you to transport goods along narrow decks, paths, etc., changing the base and number of wheels, increasing the maneuverability of the trolley while maintaining its longitudinal stability, as well as the possibility of transporting long cargo.

 In FIG. 1 shows a General view of the trolley with adapters; in FIG. 2 - trolley with adapters with combined wheels of different height; in FIG. 3, 4, 5 - wheel mounting options; in FIG. 6 - General view of the cart without adapters; in FIG. 7 is a variant of a trolley with a dissolution or trailer.

 The hand truck (Fig. 1) consists of a body 1, a removable handle 2 and wheels 3. On the side surfaces of the body there are brackets 4 for fastening the wheels, and on the outer surface of the bottom of the body are plates 5 for fastening removable, longitudinally arranged adapters 6 with bolted compounds 7.

 Adapters consist of three vertical struts 8, the upper ends of which have mating plates 9 for combining them with the plates 5, and the lower ends of the struts 8 are joined together by a horizontal rod 10. At their junctions there are two extreme 11 and one middle 12 wheel mounts. Similar mounting points are available on the body and are located on the same general level. In addition, the middle mounting location has an additional wheel mount, located below the general level of the wheels by 10-50 mm.

 The minimum longitudinal distance of the wheel mounting points on the adapter is 20 mm larger than the diameter of the outer surface of the wheels, and the minimum transverse distance between the adapters ensures that two or more wheels are located between them.

 The wheels are mounted on the body of the cart or adapter by the axis 13, the washer 14 and the cotter pin 15.

 The adapters mounted on the body are interconnected using wheel mounting points with cross ties, consisting of axles 16, bushings 17, 18, washers 14 and cotter pin 15. The width of the hub 17 corresponds to the width of the wheel hub.

 Combining adapters with couplers can be carried out on unused places of wheel mounting depending on the number and places of installation of wheels on the adapter.

 The load on the trolley with installed adapters can be placed both in the body of the trolley and under the body on the adapters.

 Depending on the road conditions and the nature of the cargo carried, the wheels on the adapters can be installed on the outside (Fig. 2), on the inside (Fig. 1) or symmetrically between the adapters with the wheel installed instead of the middle hub 18 using the axis 16 (Fig. 3). This will allow to operate the cart with a reduced track, narrow track (Fig. 1), as well as in a single track version (Fig. 3). The number of wheels mounted on the adapter can be different, so the trolley can be operated in one-wheeled (Fig. 4), two-wheeled (Fig. 3), three, four and multi-wheeled versions (Fig. 5).

 The trolley is controlled in two or three-axis versions due to the short-term impact on the handle of the trolley and the rotation of the body.

 In addition, the truck can be used in a triaxial version with the middle axis below the extreme axes (Fig. 2), which provides the optimal combination of the longitudinal stability of the truck in the four-wheel version and maneuverability in the two-wheel uniaxial version, since cargo is transported on three wheels, and the turn and the rotation of the cart is carried out with a short-term impact on the handle and the rotation of the cart relative to an axis close to the center of gravity of the cart.

 For the transport of long loads, adapters, combined between themselves by axles with bushes and mounted wheels, can be used as a dissolution attached directly to the load (Fig. 7), or as a trailer mounted directly on a trolley. In this case, the upper ends of the struts of the adapters for rigidity can be interconnected by additional fastening elements using bolted connections.

 It is possible to use two interconnected adapters with wheels in an independent form.

Claims (4)

 1. Hand truck containing a body, a U-shaped handle and removable wheels mounted on the side surfaces of the body, characterized in that it is equipped with two removable W-shaped longitudinally arranged adapters, each of which has three vertical racks, the upper ends of which are provided attachment points to mating elements available on the outer side of the bottom of the body, and the lower ones are interconnected by a horizontal link, while at the junction of the struts and the link are nodes for longitudinal attachment of wheels, similar to on the body, with the minimum distance between the wheel mounts on the adapter greater than the diameter of the outer surface of the wheel by 20 mm, and the minimum transverse distance between the adapters ensures the location of two or more wheels.  2. The trolley according to claim 1, characterized in that the adapters are equipped with an additional wheel mount, located in their middle part below the existing level of the wheel mount by 10 - 50 mm.  3. The trolley according to claim 1, characterized in that the adapters are interconnected by transverse couplers.  4. The trolley according to claim 3, characterized in that the cross ties are equipped with a place for longitudinal wheel mounting.

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