RU2735878C1 - Light trolley for transportation of goods and passengers over rough terrain - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to light trolleys for transportation of cargoes and passengers on rough terrain. Trolley comprises wheel, frame and rudder with posts fixed on frame. Frame is made of hollow profile and has two triangular elements located on both sides of wheel. Additional crossbars are also installed at all corners of the frame spatial structure to reinforce the structure and secure the load. Rudder posts consist of two guides made of hollow profiles, from above fixed by welded joint with rudder tube. Posts have additional bridge and two free ends from below, which are fixed to corresponding sides of triangular frame elements. Dimensions of rudder with guides correspond to wheel height with frame fixed on it.

EFFECT: higher convenience of folding and transportation of trolley assembled.

7 cl, 6 dwg

Description

The invention relates to hand-held vehicles for transporting various goods and passengers over rough terrain.

The proposed trolley significantly increases the possibilities for transporting goods and equipment over rough and difficult terrain and will find wide application among modern hunters, fishermen, tourists and outdoor enthusiasts, as well as military personnel, rescuers, foresters, etc.

Various technical solutions are known in this area.

So, a trolley is known (US 4055354, IPC В62В 1/20, published on 10/25/1977). The carriage for transporting cargo contains one wheel with an elongated frame located directly above the wheel. The braces that support the frame on the wheel run close to the wheel to minimize width. Handlebars at opposite ends allow operators to steer and move the cart. A pair of containers are hooked over the frame on opposite sides of the wheel to carry the load.

Known cart (US 20100270764, IPC В62В 1/12, published on 10/28/2010). The invention is a non-motorized bogie for use on rough terrain, driven by one or more persons, comprising one wheel with a brake attached to a wheel housing of a rigid frame. The frame additionally contains a rear-mounted primary handlebar and a lifting handrail and an additional auxiliary lifting handrail located at the rear. The frame additionally provides a variety of plug connections for a variety of interchangeable carrier platforms that can be easily changed in the field without tools. The frame additionally provides an attachment point for additional sources of motive power. Additional features include an electronic odometer and a self-contained electricity storage system.

A trolley is also known (US 20200023878, IPC В62В 5/00, В62В 1/12, В62В 5/04, published on January 23, 2020). The device contains one wheel, a frame attached to the wheel, and an electric motor attached to the frame. The electric motor is configured to rotate the first gear connected to the second gear chain. The second gear is connected to the wheel.

Known trolley for the transport of goods over rough terrain (US 4444405, IPC В62В 1/18, published on 04.24.1984), which, in terms of a set of essential features, is the closest to the proposed solution, respectively, taken as a prototype. The known trolley contains an aluminum frame with air-spring shock absorbers, in the middle part of which a bicycle wheel is attached, and removable tubular aluminum handles are installed at the front and rear with the help of clamping mounts to control two operators.

The disadvantages of the known solutions are:

- the complexity of the design, the presence in it of a large number of technically complex elements, for example, spring dampers, which require maintenance and increase the risks of failure of the entire structure, as well as a large number of bolted connections, which, in off-road operation, will lead to weakening of the connections, and how a consequence of the entire structure as a whole;

- the lack of a braking system, which does not allow the specified vehicle to be safely operated on slopes and inclines, and with a large load, it can carry risks for the operator, not support the weight and be injured. At the same time, the declared load capacity of 300 pounds is greatly overestimated and cannot be transported safely without a brake system downhill or downhill;

- the proposed solution of control handles is limited in height and cannot be flexibly adjusted to different heights of the operator. Also, when adjusting the height of the handles in the sample under consideration, the distance between them changes, which will create inconvenience, for example, for a tall person, since the higher the handles are adjusted, the smaller the distance between them. In the extreme upper position, the distance between the handles becomes equal to the width of the trolley, namely, the size of the transverse crosspiece of the trolley frame, which makes it impossible for a person to find between the control handles. Consequently, the height adjustment of the handles is very limited;

- large total product weight of 17 lbs (7.7 kg), compared to 5.5 kg for the proposed solution;

- material of manufacture - aluminum has a low yield point and brittleness in places of bending under load, in contrast to steel, which has a higher elastic limit and is able to return its shape after elastic-deformation loads. Also, due to the simplicity of manufacturing, aluminum requires more technologically complex and expensive argon-arc welding, and steel can be welded by any type of welding;

- the way of transporting the child involves finding a special child seat between the handles of the rear or front operator, or in both places. With this arrangement, the child is below the top level of the cart frame, close to the ground and directly in front of (or behind) the operator's feet. This placement of the child seat can be dangerous for the child, both from obstacles on the road (branches, stones, bushes), and from the movement of the operator's legs, which can accidentally touch and injure the child. Also, in the event of an uncontrolled fall of the trolley, there is a risk of the child being pressed by the load, and in the absence of a brake system on this product, this risk multiplies;

- the known design does not allow transporting an adult as a passenger, for example, in case of an urgent need to transport the victim to the nearest aid point;

- the tubular handles attachment point requires a special wrench for loosening and tightening the clamping bolt. If it is absent or lost in field conditions, it will be impossible to assemble, disassemble or tighten the steering handle mounts;

- parking the trolley by lowering the handles from one side to the ground and creating a three-point configuration is ineffective on an inclined surface, due to the lack of a brake at the main wheel. If the cart is placed on the handles on an uneven surface, it runs the risk of rolling down, along with all the load attached to it.

The technical result of the proposed invention is to improve the technical characteristics of the bogie structure, namely, to ensure the stability of the rudder struts to torsional loads and twisting; increasing the reliability, safety, maneuverability, strength and carrying capacity of the bogie.

The technical result is achieved by the fact that in a light trolley for transporting goods and passengers over rough terrain, including: a wheel, a frame and a steering wheel with struts fixed to the frame, according to the invention, the frame is made of a hollow profile and has two triangular elements each, wheels located on both sides and fixed to it, which, in turn, are connected by horizontal crossbars located above the wheel. At all corners of the spatial structure of the frame, additional jumpers are also installed to strengthen the structure and fasten the load, the rudder struts consist of two guides made of hollow profiles, welded from above to the rudder tube, and also having an additional jumper and two free ends at the bottom, which are attached to the corresponding sides of the triangular frame elements, and the dimensions of the steering wheel with guides correspond to the height of the wheel with the frame attached to it, which makes it possible to conveniently fold and transport the assembled trolley.

Additional differences of the proposed technical solution:

- the trolley has removable footrests for the passenger, fixed on the frame in the area of the wheel axis and directed along the wheel axis;

- the trolley has a chair for transporting children, fixed on the horizontal section of the frame;

- the trolley contains a bicycle disc brake equipped with a handle with a lock in the pressed position;

- the handlebar is attached to the frame by means of a pressure-type connection, which is continuously adjustable in height, fixed on bolts with thumbs;

- the handlebar of the trolley contains removable wheels of small diameter, installed at the ends of the handlebars and serving for convenient loading and unloading of the complete trolley into the trunk of the car;

- the hollow profile of the entire trolley is made of structural steel.

The essence of the proposed technical solution is illustrated by the following graphic material:

fig. 1, which shows a general view of the cart;

fig. 2, which shows the assembled cart;

fig. 3, which shows a frame with jumpers at the corners, through which slings with fastexes are threaded, allowing you to fix any non-standard cargo on the trolley;

fig. 4, which shows a removable passenger footrest;

fig. 5, which shows the attachment of a child seat;

fig. 6, which shows the attachment of the handlebar to the frame,

Where:

1 - steering knobs with wheels at the ends;

2 - handlebars made of soft non-slip material;

3 - brake lever with blocking;

4 - brake cable;

5 - steering rack;

6 - power jumper of the steering rack;

7 - clamp-type steering wheel mounts;

8 - corner bulkheads of the main frame used for securing cargo;

9 - bicycle wheel;

10 - removable footboard for the passenger;

11 - disc brake;

12 - steering wheel;

13 - horizontal crossbeams of the bogie frame;

14 - the main frame of the cart;

15 - load on the upper platform of the cart;

16 - side load on the cart;

17 - a chair for transporting children;

18 - clamping bolt.

A light trolley for transporting goods and passengers over rough terrain, includes a wheel 9, a frame 14 and a steering wheel with struts 5 fixed to the frame. The frame is made of a hollow profile and has two triangular-shaped elements, located on both sides of the wheel 9 and fixed on it, which, in turn, are connected by horizontal crossbars 13 located above the wheel 9, at all corners of the spatial structure of the frame 14 and rigidly welded additional jumpers 8 are installed to it to strengthen the structure and fasten the load. The rudder struts 5 consist of two guides made of hollow sections, welded from above to the rudder tube 12, as well as having an additional bridge 6 and two free ends from the bottom, which are attached to the corresponding sides of the triangular frame elements, which ensures the rudder stability against torsional loads and twisting, and as a result, increasing the strength and carrying capacity of the cart. The dimensions of the steering wheel 12 with guides correspond to the size of the wheel 9 with the frame 14 fixed to it, which makes it possible to conveniently fold and transport the assembled cart (see Fig. 2).

The frame is fixed on the wheel 9, for example, using an eccentric.

Removable footpegs 10 for the passenger are attached to the frame in the area of the wheel axis and are directed along the wheel axis, which minimizes the center of gravity of the transported passenger when resting on the footpegs, provides his comfort and facilitates maneuverability for operator control, while the rudders act as a backrest for passenger.

The trolley can have a chair 17 for transporting children, fixed on a horizontal section of the frame, which provides for a comfortable and safe transportation of children.

The cart contains a bicycle disc brake 11, equipped with a handle 3 with a lock in the pressed position.

The steering wheel 12 is attached to the frame 14 by means of a pressure-type joint 7, infinitely adjustable in height, fixed on bolts with thumbs. The steering wheel of the trolley contains removable wheels of small diameter, installed at the ends of the handles 1 of the steering wheel and serving for convenient loading and unloading of the complete trolley into the trunk of the car.

Description of fastening the handlebars 12 to frame 14:

The steering wheel is fastened by threading the steering wheel struts into four fasteners, rigidly welded to the triangular parts of the bogie body, in which there is a threaded hole and a clamping bolt 18, which clamps the steering wheel struts 5 inside the mountings, fixing the height of the steering wheel in a given position. This type of attachment allows you to flexibly adjust the height of the steering wheel to the height of the trolley operator. To dismantle the steering wheel or adjust its height, it is enough to slightly loosen the clamping bolts, and the bars 5 of the steering wheel will move freely in the mountings. For fixing, it is necessary to tighten the four clamping bolts, and the steering wheel is securely fixed in a given position.

The trolley works as follows:

Holding the cart by handles 2, the operator rolls the cart in front of him. Maneuvering is carried out by turning the entire bogie about the vertical axis of the bogie wheel, while, by tilting the bogie back and forth, the operator balances the entire weight of the load on the central axle of the wheel, which removes the load from the operator and makes it possible to transport a large weight up to 100 kg, inaccessible to transportation by one person in the classical way in a backpack, or using other designs of trolleys, where the weight is distributed to the operator's hands in a proportion of 50% - 75%, depending on the angle of inclination of the trolley relative to the wheel axis.

If it is necessary to park the trolley, the operator tilts it downwards, resting the ends of the steering wheel on the ground. In this form, the trolley has three points of support and stands securely in place even with a load, and the presence of a disc brake 11 and a brake lever 3 with a lock does not allow it to roll, even when parked in this position on a slope with a slope of up to 20 ° -25 °.

For loading into the car, the operator brings the trolley with the rear end to the trunk of the car, tilts it so that the wheels at the ends of the handles fall on the floor of the trunk, after which the parking brake 3 is fixed, and the trolley is securely held in this position together with the load. After that, the operator lifts the trolley by the main wheel 9 and, leaning on two wheels on the steering wheel, rolls the loaded trolley into the trunk of the car, without the need to remove the load and disassemble the trolley.

Unloading is carried out in the reverse order, which allows to reduce the time for assembly / disassembly of the trolley and stowage of cargo and to maximize the speed of loading and unloading of the equipped trolley into the vehicle.

The use of one bicycle wheel 9 in the trolley allows you to get maximum maneuverability on narrow paths with the ability to turn in one place, which is very important in difficult forest and mountainous terrain. A large diameter bicycle wheel increases the geometric off-road capability of the cart and makes it easy to overcome obstacles such as fallen trees, holes, ravines, etc. At the same time, significant help in overcoming obstacles is provided by the presence of a disc bicycle brake 11 and a special handle with a blocker 3, which allows you to fix the trolley on a gentle slope, or by rolling over an obstacle.

The design of the trolley frame and the dimensions of the main frame are designed in such a way that they allow you to mount and use with the trolley any accessories intended for a bicycle rack, such as bicycle bags, children's bicycle seats, etc., as well as transport non-standard heavy cargo on it, for example, a boat motor and the inflatable boat itself in a folded state.

The presence of special attachment nodes 8, through which slings with fastexes are threaded, allows you to fix any non-standard cargo on the trolley from three sides (right, left and top): backpacks, bags, suitcases, trunks, canisters, etc., securely fixing them to the trolley frame ...

In the manufacture of the bogie, structural steel is used, a hollow profile of small cross-section, due to the geometrically precisely calculated design and all-welded design of the body, allows to obtain a high rigidity of the frame for bending and torsion, with all types of loads arising from the operation of the bogie.

The design of the trolley uses an aluminum bicycle wheel 9 with a double rim, used in mountain bikes, as well as a special off-road tire with an anti-puncture insert, which allows you to operate a product with a large load off-road and not be afraid of wheel puncture or damage to the disc.

In the horizontal position, the trolley is in the form of a chair with a backrest and can be used in this form for a short rest by the operator.

Thus, the proposed technical solution with improved technical characteristics has the following advantages over known designs:

- the simplest and most reliable design of the main frame of the bogie, excluding complex technical devices that require maintenance and repair;

- creation of a braking system by the bogie wheel for effective and safe use on slopes and uneven surfaces;

- creation of a parking brake locking system for reliable and safe parking of the trolley even on an inclined surface without the operator having to keep the brake lever pressed constantly;

- Creation of a flexibly height-adjustable steering wheel for operators of different heights, while maintaining a comfortable distance between the control sticks;

- creation of a universal fastening for cargo of various sizes and shapes, through the use of textile slings and quick-detachable fastexes with two-way adjustment;

- providing a safe way of attaching a child seat, by fixing it to the top of the cart, as a result, safe placement of the transported child over the cart and the goods being transported;

- creation of special footrests (supports) for the legs, for comfortable transportation of an adult passenger in a sitting position, as well as the use of steering wheel struts as a backrest for the convenience of a passenger transported in this position;

- provision of loading onto a cart of an unconscious victim, by one rescuer without assistance. Ensuring reliable fastening of the unconscious victim on the cart and the ability to transport him alone (or by two people) over difficult terrain to the nearest aid point;

- creation of a structure that allows you to quickly disassemble the trolley without using any special tools;

- creation of a compact form of the trolley when folded, in dimensions not exceeding the dimensions of the trolley wheel itself;

- providing the ability to quickly and conveniently attach the folded cart to a backpack or instead of a backpack, which allows you to transport the folded cart on your back or on a backpack, completely freeing the operator's hands, as well as transport it in any public transport as an ordinary hand luggage. If necessary, it is quickly assembled and brought into working condition in less than 1 minute;

- creation of interchangeability of the bogie wheel. In the event of an emergency and breakdown, the wheel can be easily dismantled and any front wheel from a bicycle with a disc brake can be installed in its place;

- creation of a structure for fast and convenient loading and unloading, assembled and loaded trolley into the trunk of a car, by mounting on the ends of the control levers of removable wheels of small diameter with a locking function.

Claims (7)

1. A light trolley for transporting goods and passengers over rough terrain, including: a wheel, a frame and a steering wheel with struts fixed to the frame, characterized in that the frame is made of a hollow profile and has two triangular-shaped elements located on both sides wheels and those fixed on it, which, in turn, are connected by horizontal crossbars located above the wheel, additional jumpers are also installed at all corners of the spatial frame structure to strengthen the structure and fasten the load, the rudder stands consist of two guides made of hollow profiles, from above welded to the rudder tube, as well as having an additional jumper and two free ends at the bottom, which are attached to the corresponding sides of the triangular frame elements, and the dimensions of the rudder with guides correspond to the height of the wheel with the frame fixed to it, which makes it possible to conveniently fold and transport the trolley assembled form. 2. A light trolley according to claim 1, characterized in that it has removable footrests for the passenger, fixed on the frame in the region of the wheel axis and directed along the wheel axis. 3. A light trolley according to claim 1, characterized in that it has a chair for transporting children, fixed on a horizontal section of the frame. 4. A light trolley according to claim 1, characterized in that it comprises a bicycle disc brake equipped with a handle with a lock in the depressed position. 5. Light trolley according to claim 1, characterized in that the handlebar is attached to the frame by means of a pressure-type connection, which is continuously adjustable in height, with fixation on bolts with thumbs. 6. Light trolley according to claim 1, characterized in that the handlebar of the trolley contains removable wheels of small diameter installed at the ends of the handlebars and serving for convenient loading and unloading of the complete trolley into the trunk of the car. 7. A light carriage according to claim 1, characterized in that the hollow profile is made of structural steel.

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