FI96829C - Transport wheel kit - Google Patents

Description

5 96829

Kuljetuspyörästö

Transporthjulsats

The invention relates to a transport gear for transport trolleys and the like used substantially indoors, such as kitchens, restaurants and the like, which transport gear comprises a frame to be mounted on a transport trolley with parallel wheels mounted on opposite sides of the frame, which wheels are mounted directly on the frame to the frame of the transport gear rotatably rotating with the wheel bearing shafts parallel to the axles of rotation.

Transport wheels and gears are used e.g. in various 15 wagons and carts for moving goods. Especially when using such wagons indoors, they have the disadvantage that, especially when transporting noisy goods, e.g. containers, the wagons make a fairly loud noise. The problem is particularly evident in e.g. in commercial kitchens, restaurant facilities and the like. In addition to the goods being transported, the wagon itself quite often has a sound-amplifying structure, for example a structure made of thin and bent steel sheet. 20 Furthermore, in those rooms where such wagons are used, there is often a tile floor with grooved seams. On such a platform, when moving and moving the carriages, quite a considerable noise is produced when the wheels of the carriage cross the seams of the tile floor.

To solve the problem described above, i.e. to reduce the noise caused by the carriages and to overcome seams and other minor obstacles such as low thresholds, it has previously been proposed to equip the carriages with larger diameter wheels, which in turn are equipped with soft tires. Soft tires flex] when crossing obstacles, i.e. the obstacle is in a way pressed into the tire. However, such soft tires are not able to remove the sound enough because when the carriage is loaded with 30, the excessive softness of the tires makes the carriages quite heavy to handle. Larger diameter wheels, on the other hand, run more smoothly over irregularities due to the angle of attack, but large wheels are very expensive and often 2 96829 they are not suitable for a wagon that is otherwise designed to be neat and aesthetically pleasing.

It is an object of the present invention to provide a new type of wheelset for transport wagons which avoids the disadvantages of the prior art described above and which provides a less noisy solution which also makes it easier than before to overcome minor obstacles. To achieve this object, the invention is mainly characterized in that the wheels of the transport gear are mounted on the frame of the transport gear so that the bearing shafts of the wheels are spaced apart with respect to the direction of travel of the transport wheels.

The most significant advantage of the invention over the prior art, i.e. less sound generation, is achieved in that in a gear according to the invention comprising two wheels arranged in parallel, the wheels are not mounted on a common axle but a "phase shift" is arranged between the axles. so that they do not face an obstacle at the same time. As a result, for example, when moving a carriage with wheels according to the invention on a tile floor, one wheel of the gear runs on a flat plate surface when the other wheel falls into the sealing groove. The wheel thus travels considerably more smoothly over seams and similar obstacles, whereby the generation of sound is substantially lower than in known structures. Other advantages and features of the invention will become apparent from the following detailed description of the invention.

Next, the invention will be explained by way of example with reference to Figs. 25 of the accompanying drawing.

; Figure 1 shows a first embodiment of a transport gear according to the invention seen from the side and partly in section.

Fig. 2 shows the gear according to Fig. 1 in a horizontal sectional view through the axles of the wheels.

3 96829

Figure 3 shows a second embodiment of a gear according to the invention seen from the side and partly in section.

Fig. 4 is a partial sectional view of the gear according to Fig. 3.

5

The gear shown in Fig. 1 is generally indicated by reference numeral 10. The gear 10 comprises a gear body 11 having wheels 12, 13 mounted on both sides of the body 11 so that the first wheel 12 and the second wheel 13 are located on opposite sides of the body 11. The wheels 12,13 are each provided with treads 14,15, as shown in Figure 2. The wheels 12,13 are rotatably mounted on the frame 11 so that the bearing shafts 16,17 of the wheels 12,13 are not located in the same center but at a distance s from each other. Due to this distance s, i.e. the "phase shift", the wheels do not cross any obstacles simultaneously during operation, but cross the obstacles in succession, whereby the crossing of the obstacles is smooth and low-noise.

15

The gear body 11 is pivotable so that a vertical bearing 18 is formed in the body 11 as a sleeve portion, in which a pivot shaft 18a is pivotally and vertically movably arranged in the axial direction of the vertical bearing 18, by means of which the gear 10 is fixed to the carriage. In addition to pivoting or pivoting, in the example of Fig. 20 the gear is sprung so that a spring 19a is mounted on the bottom of the vertical bearing 18 and a ball 19 is arranged under the pivot shaft 18a and on the spring 19a acting as a thrust bearing thrust bearing. The suspension of the gearbox is thus arranged simply in connection with the pivot bearing, whereas in conventional solutions according to the prior art the suspension of the gearbox has been considerably more complex, including e.g. 25 different lever mechanisms.

; A support arch 11a is formed and formed in the frame 11 of the gearbox, in the lower part of the frame 11 according to Fig. 1, which in the event of damage to the gearbox 10, e.g. when the wheel 12,13 breaks, acts as a floor-supporting safety slide to prevent the carriage 30 from tipping over. The support arch 11a also prevents the wheels 12,13 from falling between the gratings of the floor drain, for example.

4 96829

In the solution according to Fig. 3, which shows a second embodiment of the transport gear according to the invention, the transport gear is generally indicated by reference numeral 20. In the embodiment of Figure 3, the transport gear 20 comprises a transport gear body 21 sprung in a similar manner to the embodiment of Figures 1 and 2. Thus, the transport gear body 21 comprises a vertical bearing 28 formed as a sleeve portion, in which a gear pivot shaft 28a is pivotally and movably arranged in the axial direction of the vertical bearing 28 to form a pivot bearing. A ball 29 is arranged below the pivot shaft 28a and a spring 29a is mounted on the bottom of the vertical bearing 28, on which the ball 29 and the pivot shaft 28a rest. Thus, in this embodiment, the ball 29 also acts as a thrust bearing thrust bearing. It is also shown in Figure 3 that the spring 29a is most preferably a membrane spring, although other embodiments, for example a coil spring, may be used. The solution of Figures 3 and 4 differs substantially from the embodiment of Figures 1 and 2 in that in the embodiment of Figures 3 and 4 the wheels 22,23 of the transport gear are not mounted directly on the frame 21 of the transport gear 20.

15

In the embodiment of Figures 3 and 4, there is a bogie body 21a mounted on the frame 21 of the transport gear 20, which can rotate in the frame 21 about a horizontal axis. The wheels 22,23 of the transport gear are in turn mounted on said said bogie body 21a so that the axes of rotation 26,27 of the wheels 22,23 are not located on a common axis 20, but are spaced apart, i.e. "phase shifted". This bogie solution and phase shift make it even easier to cross obstacles, as when crossing obstacles, the wheel crossing the obstacle first rises over the obstacle, sharing the weight with the latter wheel. The crossing of the obstacle thus takes place in a manner similar to that along a sloping surface. With such a solution, it is also quite easy to get over larger obstacles, for example thresholds. Figures 3 and 4 further show that the wheels 22,23 of the transport gear are also provided with a soft tread 24,25 in this embodiment.

The invention has been described above by way of example with reference to the figures of the accompanying drawing. However, the invention is not limited to the examples shown in the figures only, but the invention can be modified in many ways within the scope of the inventive idea defined in the appended claims. Thus, one embodiment of the solution according to the invention may be that the transport gear is provided with brake devices which act on both wheels of the transport gear. Preferably, the brake device is then arranged to act on the inner surface of the outer casing of the wheels of the transport gear. In the event that the gearbox is pivotally mounted on the transport carriage, the brake device 5 can also prevent the turning movement of the transport gear.

Claims (2)

§ 9M29 A transport gear for transport trolleys and the like used substantially indoors, such as kitchens, restaurants and the like, which transport gear (10,20) comprises a body (11,21) to be attached to the transport carriage and mounted on opposite sides of the body (11,21) in parallel arranged wheels (12,13; 22,23), which wheels (12,13) are mounted directly on the transport gear frame (11) or on a bogie body (21a) mounted on the transport gear frame (21) by rotatably rotating bearing shafts (22, 23) 26,27), characterized in that the wheels (12,13,22,23) of the transport gear 10 are mounted on the frame (11,21) of the transport gear so that the bearing shafts (12,13; 22,23) of the wheels (12,13; 22,23) 16.17; 26.27) are located at a distance (s) from each other with respect to the direction of transmission of the transport wheels (12.13; 22.23). «Il au 1 l ii! H! SI: · 96829 1. Transport vehicles for transport vehicles and vehicles with an internal load on the kitchen, restorers and weighing equipment, transport capacity 5 (10,20) of vehicles in the transport area (11,21), in which the vehicle is connected to the vehicle (11,21) and the bridges of the spark plugs (12,13; 22,23), the light brackets (12,13) and the spheres (11) lagrad i stommen (21) av transporthjulsatsen roterbart päen med hjulens (22,23) lagringsaxlar (26,27) parallel rotationsaxel, kännetecknad 10 därav, att hjulen (12,13; 22,23) av transporthjulsatsen är lagrade i stommen (11) , 21) in the case of a transport vehicle, the adjusting means (12,13; 22,23) of the swing sax (16,17; 26,27) are included in the transport (s) of the transport vehicle (12,13). 15