RU214852U1 - UNDERCARRIAGE OF VACUUM SWEEPER - Google Patents

Abstract

The utility model relates to the field of transport and concerns the undercarriage of communal, mainly vacuum sweepers.

The task is to increase the carrying capacity and resistance to shock loads of the undercarriage of a vacuum sweeper by achieving a technical result - strengthening its damping system.

In the undercarriage of the vacuum sweeper (Fig. 2), containing mounted on the frame (6) together with the damping system, the front and rear drive axles (14, 15) of the portal type, on which the steered wheels (2, 3) are installed, with In this case, frame reinforcement (6) is applied, and the damping part contains leaf spring packs (22) installed in pairs on the front and rear drive axles (14, 15), there are distinctive features: the damping system is supplemented with telescopic shock absorbers (23) mounted on the frame (6) and on the front and rear drive axles (14, 15), and is also supplemented with elastic cushions (24) and blocking hydraulic cylinders (25) mounted above them on the frame (6), the rods (26) of which, like the elastic cushions ( 24), made with the possibility of abutting against the mentioned bridges, in addition, the leaf spring packs (22) are fixed at their ends on the frame (6) with the help of elastic supports (28) and through platforms (27) - with stepladders (29) to the front and rear driving axles (14 , fifteen). On each of the mentioned bridges, a double-acting hydraulic cylinder (12) is fixed. The reinforcement of the frame (6) is also described.

Description

The utility model relates to the field of transport and concerns the undercarriage of utility vehicles, preferably vacuum sweepers.

A running gear of a communal machine is known [1, Patent RU 2169095 C1, IPC B62D 63/00, priority 10/19/1999, published 06/20/2001], containing sprung front and rear drive axles with wheels mounted on hinged semi-frames.

The disadvantage of the known device is the swivel of the semi-frames, which reduces the strength characteristics of the undercarriage of the communal machine and limits the arsenal of replaceable working equipment installed on it. In addition, the hinged connection of the semi-frames increases the distance between the cab of the communal machine and the working equipment on it, which leads to an increase in the length of its chassis and a decrease in maneuverability. This circumstance reduces the operational capabilities of such a communal machine, as it limits its use when working in cramped territorial conditions.

These shortcomings are eliminated in the communal vehicle undercarriage adopted as a prototype [2, Patent RU 115753 U1, IPC B62D 63/00, priority 08/29/2011, published 05/10/2012], which contains front and rear drive axles fixed on the frame together with a damping system, with swivel wheels. The frame was reinforced in the form of conjugation of its two parts, in which the spars of the rear part are located inside the front part and are rigidly connected to its spars. As a damping part, packs of leaf springs are used, installed in pairs on the front and rear drive axles.

However, the disadvantage of the undercarriage of the communal machine according to the prototype [2] is its limited capacity for carrying capacity and shock loads due to the relatively small power characteristics of the leaf springs. Therefore, such a running gear is used only to accommodate small-sized bunkers of utility vehicles.

These shortcomings do not allow the use of such a running gear for utility vehicles, for example, for vacuum sweepers.

The objective of the utility model is to increase the carrying capacity and resistance to shock loads of the undercarriage of a vacuum sweeper by achieving a technical result - strengthening its damping system.

The problem is solved by the fact that (Fig. 1-3) in the running gear of the vacuum sweeper (1), which contains the front and rear drive axles (14, 15) fixed on the frame (6) together with the damping system, on which steered wheels (2, 3), while the reinforcement of the frame (6) is applied, and the damping part contains packages of leaf springs (22) installed in pairs on the front and rear drive axles (14, 15), there are distinctive features; the damping system is supplemented with telescopic shock absorbers (23) mounted on the frame (6) and on the front and rear drive axles (14, 15), and is also supplemented with elastic cushions (24) mounted above them on the frame (6) and blocking hydraulic cylinders (25 ), the rods (26) of which, like the elastic cushions (24), are made with the possibility of abutting against the mentioned bridges, in addition, the packs of leaf springs (22) are fixed at their ends to the frame (6) with the help of elastic supports (28).

The mentioned additions to the damping system and the introduction of elastic supports for the leaf spring packs will contribute to strengthening such a system, which will increase the load capacity and shock resistance of the undercarriage of the vacuum sweeper, and increase the tonnage of such a machine.

Additional distinguishing features of the utility model:

- packages of leaf springs (22) are fixed through platforms (27) by ladders (29) to the front and rear drive axles (14, 15), and through elastic supports (28) - to the frame (6), while the rods (26) of the blocking hydraulic cylinders (25) are located with a stop through the platforms (27) into the front and rear drive axles (14, 15), with the possibility of limiting the deflection of the leaf springs (22).;

- portal-type front and rear drive axles (14, 15) are used, each of which has a double-acting hydraulic cylinder (12);

- strengthening of the frame (6) is ensured by the fact that it is made of two longitudinal channel spars (16), at the ends of which transverse channel spars (17) are fixed, and cylindrical rods (18) are located inside the frame (6) with their ends fixed on the brackets (19) with an emphasis on the longitudinal channel spars (16), on the outer and inner sides of which brackets (20, 21) are installed with the possibility of attaching units and systems of the vacuum sweeper (1) to them;

- two longitudinal channel spars (16) of the frame (6) are made with places for mounting sweeping equipment (7) and vacuum cleaning equipment, including a hopper (8) and a garbage picker (9).

The essence of the utility model is illustrated by illustrations, where in Fig. 1 shows a side view of a vacuum sweeper which is mounted on a utility model undercarriage; in fig. 2 - General view of the undercarriage of the vacuum sweeper; in fig. 3 - view A in Fig. 2.

The undercarriage according to the utility model is used in a vacuum sweeper 7 (Fig. 1), which has steerable wheels 2, 8, driven from a steering column 4 located in the cab 5 through a volumetric hydraulic drive (not shown). On the frame 6 of such a machine, for example, sweeping equipment 7 and vacuum cleaning equipment with a hopper 8 together with a garbage picker 9 can be installed.

The steered wheels 2 and 8 of the communal machine 7 are installed under the frame 6 on the hubs of the bridge gears (not indicated) using lever-articulated assemblies 70 unified among themselves (Fig. 2, 3) and with the possibility of turning in various modes using rods 11, driven by double-acting hydraulic cylinders 12, the rods 13 of which are connected to the rods 11. The double-acting hydraulic cylinders 12 are controlled from the steering column 4 (Fig. 1) located in the cabin 5 through a volumetric hydraulic actuator (not shown).

The undercarriage of the vacuum sweeper 1 (Fig. 1) contains (Fig. 2, 3) mounted on the frame 6, together with the damping system, the front and rear drive axles 14, 15 of the portal type, on the lever-hinge nodes 10 of which are steered wheels 2 and 3.

Frame 6 is reinforced due to the fact that it is made of two longitudinal channel spars 16 parallel to each other, at the ends of which transverse channel spars 17 are bolted, and cylindrical rods 18 are located inside frame 6 with fixing their ends through brackets 19 with resting on the longitudinal channel spars 16, on the outer and inner sides of which brackets 20, 21, respectively, are installed with the help of bolted connections with the possibility of attaching units and systems of the vacuum sweeper 1 to them, there are also places for mounting sweeping equipment (7 ), vacuum cleaning equipment with a hopper (8) and a garbage picker (9). The damping system of its chassis contains packages of leaf springs 22 (Fig. 2) installed in pairs on the front and rear drive axles 14, 15, and also contains telescopic shock absorbers 23, mounted on the frame 6 and on the front and rear drive axles 14, 15 Above them on the frame are mounted elastic cushions 24, for example, rubber, and mounted blocking hydraulic cylinders 25, the rods 26 of which, like the elastic cushions 24, are made with the possibility of abutting against the platforms 27 of the mentioned bridges. Packages of leaf springs 22 are fixed at their ends on the frame 6 with the help of elastic supports 28, as well as in its middle part with the help of ladders 29, passed through the said platforms 27

Cabin 5 (Fig. 1) vacuum sweeper with its power unit (not shown) are attached to the brackets 20 and 21, respectively.

The front removable working equipment (not shown) is attached to the plate 30 (Fig. 2), which is mounted on the transverse channel spar 17 near the front drive axle 14.

On steerable wheels 2, 3, it is desirable to install road tires with a dimension of 10.00R20 or wide-profile off-road tires with a dimension of 500/70-20.

Taken together, the described design of such a chassis provides;

- high throughput and maneuverability of the vacuum sweeper 1 due to the implementation of all-wheel drive and the rotation of all four steered wheels 2, 3:

- turning by steered wheels 2, (classic mode);

- turning the steered wheels 2 in one direction, and the steered wheels 3 in the other direction (full rotation mode);

- diagonal movement when turning all steered wheels 2.3 in one direction ("crab" mode);

- turning only with rear wheels 2 (“loader” mode);

- the possibility of an unimpeded exit of the vacuum sweeper 1 from roads and sidewalks and off-road driving, with the recommended ground clearance (clearance) k (Fig. 3)) in the range of 500-550 mm, depending on the tires installed;

- movement on public roads with own transport speed of 50 km/h and overall width L (Fig. 3) 2200-2400 mm, depending on the tires installed, which does not exceed the standard transport dimension of 2500 mm;

- stability on turns and slopes due to a decrease in the height of the center of gravity of the communal machine 1; for this, the mounting height h (Fig. 3) of the frame 6 (see Fig. 1) is recommended in the range of 1050-1100 mm, depending on the installed tires;

- high load capacity of the machine with a permissible load on each axle from 6 to 8 tons, depending on the installed tires;

- reduction of rolls when driving a vacuum sweeper 1 off-road on a slope, slope or when unloading the bunker (body) in dump mode due to the possibility of blocking the suspension travel by locking hydraulic cylinders 25, while softening the impact of the front and rear drive axles 14, 15 on the frame 6 elastic cushions 24.

Sources of information;

1. Patent RU 2169095 C1, IPC B62D 63/00, priority 10/19/1999, published 06/20/2001.

2. Patent RU 115753 U1, IPC B62D 63/00, priority 08/29/2011, published 05/10/2012 /Prototype/.

Claims (5)

1. Chassis of a vacuum sweeper (1), containing front and rear drive axles (14, 15) fixed on the frame (6), together with a damping system, on which steered wheels (2, 3) are installed, while reinforcement is applied frame (6), and the damping system contains packages of leaf springs (22) installed in pairs on the front and rear drive axles (14, 15), characterized in that the damping system is supplemented with telescopic shock absorbers (23) mounted on the frame (6) and on the front and rear drive axles (14, 15), and is also supplemented by elastic cushions (24) and blocking hydraulic cylinders (25) mounted above them on the frame (6), the rods (26) of which, like the elastic cushions (24), made with the possibility of abutting against the mentioned bridges, in addition, the leaf spring packs (22) are fixed at their ends on the frame (6) with the help of elastic supports (28). 2. Chassis according to claim 1, characterized in that the leaf spring packs (22) are fixed through platforms (27) by ladders (29) to the front and rear drive axles (14, 15), and through elastic supports (28) to frame (6), while the rods (26) of the blocking hydraulic cylinders (25) are located with a stop through the platforms (27) into the front and rear drive axles (14, 15), with the possibility of limiting the deflection of the leaf springs (22). 3. Chassis according to claim 1, characterized in that front and rear drive axles of portal type (14, 15) are used, each of which has a double-acting hydraulic cylinder (12). 4. Chassis according to claim 1, characterized in that the reinforcement of the frame (6) is ensured by the fact that it is made of two longitudinal channel spars (16), at the ends of which transverse channel spars (17) are fixed, and inside the frame (6) cylindrical rods (18) are located with their ends fixed on brackets (19) with an emphasis on longitudinal channel spars (16), on the outer and inner sides of which brackets (20, 21) are installed with the possibility of attaching units and systems of a vacuum sweeper to them machines (1). 5 Chassis according to claim 4, characterized in that two longitudinal channel spars (16) of the frame (6) are made with places for mounting sweeping equipment (7) and vacuum cleaning equipment, including a hopper (8) and a garbage picker ( 9).

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