RU62371U1 - TUBULAR WHEEL MACHINE CABIN FRAME - Google Patents

Abstract

The tubular frame of the cab of the wheeled vehicle is made in the form of a spatial truss. It consists of tubular power arches 24 with tubular supporting front, middle and rear struts 25-27 located below them, tubular transverse beams connecting the arcs 24 and racks 27, tubular longitudinal beams 36, 37 connecting the lower ends of the arches 24 and supporting struts. The technical result is to increase the reliability of the frame when executing a large cab with wide doors.

Description

The utility model relates to wheeled vehicles, namely to their bodies. It relates to the implementation of the frame of the cabin of a wheeled agricultural transport machine.

Various carcasses of wheeled car cabs are known for fixing glass windows, side panels, roofs and doors to them. The author's certificate No. 672091, IPC B 62 D 33/06, issued in the USSR, shows the frame of the cab of a vehicle, mainly a tractor or agricultural machine, consisting of vertically and horizontally arranged beams, fixed on a massive base made in the form of a pallet. With this frame, the cabin turns out to be cramped and at the same time very metal-intensive. The frame of the cab of a wheeled vehicle, shown in RF patent No. 1268463, IPC B 62 D 33/06, contains inclined front and rear struts connected to each other in the upper and lower parts by crossbars, upper and lower longitudinal and transverse beams associated with the struts, and vertical middle racks. The upper and lower transverse beams are interconnected, forming a closed power belt located in the transverse plane of symmetry of the cab. The front and rear inclined racks are made in one piece with the upper and lower longitudinal beams having a cut in the transverse plane, forming C-shaped force elements, the ends of which are rigidly connected to the specified power belt. This cab is designed primarily for the tractor to work with direct and reverse control of the tractor, which creates certain inconveniences.

In applications No. 4290085, 616563, IPC B 62 D 33/06, filed for the grant of a European patent, a tubular cabin frame is shown containing a trihedral windshield formed by middle and extreme flat sections, narrow side doors with a window at the top, side windows with a window behind doors and a flat roof. The frame of this cabin contains six tubular racks of a square profile located under the roof,

mounted on a base formed by tubular beams. However, a cabin with such a frame is single. In the application in EPO No. 1164073, IPC B 62 D 33/06, a cab frame is shown consisting of short curved power arcs having straight upper and lower sections. The rear ends of the power arcs are connected to a U-shaped frame installed across the cab, and their lower ends are connected to the longitudinal beams located between the power arcs and the said frame. However, a cabin with such a frame, which has very small dimensions, is cramped.

A closer analogue is the tubular frame of the cab of wheeled agricultural machinery and tractors, depicted in copyright certificate issued in the USSR No. 1765049, IPC B 62 D 33/06. This frame is made in the form of a spatial truss containing side frames consisting of vertical and longitudinal horizontal beams of tubular section and interconnected into a spatial structure by transverse beams forming the upper and lower power belts. However, in this frame there are many angular joints of the beams with each other, in which significant stress concentrations occur that reduce the strength of the frame, and the cabin itself with such a frame is obtained in the form of a tight booth, which significantly hinders the driver’s actions when performing various technological operations.

The task is to create a reliable frame of the cab of a wheeled transport vehicle that has sufficient strength when making a large cab with a spacious passenger room and wide doors to increase the comfort of the driver.

The solution to this problem is ensured by the fact that the tubular carcass of the wheeled vehicle cabin, made in the form of a spatial truss, consists of tubular power arcs with tubular support front, middle and rear racks located under them, tubular transverse beams connecting power arcs and rear racks, tubular longitudinal beams connecting the lower ends of the power arcs and support pillars.

When performing a cabin frame with the indicated long-length power arcs, forming a support for the roof and windshield and supported by several pillars, the cabin is spacious with a large height and width of the door opening, which increases the convenience of entering the cabin, staying in it during technological operations and exit from it. At the same time, the implementation of each power arc of a long frame without sharp bends and the presence of three supporting posts under it ensures the reliability of the frame.

The front strut of the cab frame is made convex towards the power arc and connected to it at the junction of the transverse beam located above the windshield opening, while the front strut is additionally connected with the power arc located between them under the front window opening of the sidewall of the longitudinal beam connected to the power arc at the junction of the transverse beam located under the windshield opening. The middle and rear racks are made straight and connected by a longitudinal beam located below the power arc under the opening of the rear side window. The rear racks are connected by a transverse beam located near the rear upper ends of the power arcs, a transverse beam located at the level of the longitudinal beams connecting the middle and rear racks between their ends, and a transverse beam located near their lower ends. The lower ends of the support struts on each side of the frame are interconnected and with the lower end of the power arc.

In this cabin frame, behind the front sections of the power arches, there is a shield connected to the transverse beam connecting the power arches under the windshield opening and to the longitudinal beams connecting the lower ends of the power arc and the front pillar.

The figure 1 shows a wheeled multi-purpose machine with a closed cab equipped with a frame (side view).

Figure 2 shows this wheeled transport vehicle in front.

The figure 3 shows the cab frame of this wheeled vehicle

Figure 4 shows a cabin frame assembly with a door frame.

The vehicle depicted in figure 1 is a wheeled vehicle containing the same front and rear wheels 1 and 2, respectively, driven by a heat engine. Above the front wheels 1, arcuate wheel wings are installed 3. On the frame 4 of the car there is a multi-seat shaped cab 5, behind which there is a cargo platform 6. In front of the cab there is a hood 7. A bumper 8 is installed in front of the car 7 in front of the hood 7.

The cab 5 of this wheeled vehicle contains a roof 9 on which lighting devices and an air conditioning system are installed. A windshield 10 (figure 2) is located in front of the cab roof, having a cylindrical surface bent toward the hood 7. A wide door 11 is located under the roof 9 on each side of the cab 11. The roof 9 is located above the door 11 to facilitate entry to the cab and reduce aerodynamic drag the car is made convex, bent towards the windshield 10 and towards the rear wall 12 of the cabin.

The door 11 contains a large front window 13 of great height, located between the roof 9 and the wheel wing 3, and the rear window 14 with the lowering glass. Under the window 14 above the step 15 is a panel 16 with a handle for opening the door. A curved front side window 19 is located in front of the door of the rearview mirror 17 above the front panel 18 of the cab sidewall 19. The rear side window 21 is located behind the door above the rear panel 20 of the cab sidewall 21. On the rear wall of the cab 12 above the platform 6, behind the grating 22, there is a rear cab window.

Cabin 5 is equipped with a frame 23, made in the form of a spatial truss. The frame 23 of the cab contains located along the machine, a single tubular power arc 24 of a rectangular profile (figure 3), having a constant radius of curvature, the same along their entire length between their front (lower) and rear (upper) ends. The wide side of the power arches 24 is turned towards the windshield 10. Power arches 24

in front they are bent down under the windshield 10, and behind they are bent towards the rear wall 12 of the cabin.

Under each power arc 24, the frame 23 of the cab contains three tubular support legs rigidly connected to it, namely the arcuate front strut 25 and the straight middle strut 26 and rear strut 27. An opening of the front side window 19 is located between the front support strut 25 and the power arc 24. An opening of the rear side window 21 is located between the middle pillar 26 and the rear pillar 27 of the cab frame. Between the front and middle pillars 25 and 26 there is an opening of the door 11, the width of which is lower than the power arc.

Between the power arches 24 horizontally installed transverse beams 28 and 29, forming with the power arches 24 the opening of the windshield 10, which is glued to them and to the wide side of the power arches. Near the rear ends of the power arcs is a transverse beam 30 connected by arcuate runs 31 with a transverse beam 29.

The front strut 25 to increase its reliability when hinging a wide door is made combined. From above, it, namely its upper tubular part, is connected directly to the power arc 24 at the junction with the lateral beam 29 located above the windshield opening. Under the front side window 19 between the power arc 24 and the front strut 25 of the cab there is a longitudinal beam 32 connected to the power arc at the junction of the transverse beam 28 located under the windshield opening. The lower tubular part 33 of the front support post 25 is located between the boxes 34 and 35, in which the hinges of the door hinge 11 are located. The upper box 34 is connected by welding to the longitudinal beam 32 located on it. The lower box 35 is connected by welding to the curvilinear longitudinal beam 36 adjacent to it from below having under the box 35 a straight front section connected to the front end of the power arc 24, and an arched rear section located near the wheel wing 3 and having the same shape with it. With trailing end

the beam 36 is connected located above the footboard 15 of the cab direct longitudinal beam 37, forming the threshold of the cab. The rear end of the longitudinal beam 37 is connected to the lower end of the middle support post 26.

The middle and rear support pillars 26 and 27 are interconnected by a longitudinal beam 38 located under the opening of the rear side window 21, and an inclined beam 39 connecting their lower ends. The rear struts 27 are interconnected by a transverse beam 30, located at the top at the rear ends of the power arches 24, an average transverse beam 40, located under the opening of the rear window of the cabin at the level of the longitudinal beam 38, located under the opening of the rear side window, and the lower transverse beam 41, located at their lower ends. The supporting racks and the above-mentioned beams of the cabin frame are made of tubular rectangular profile. They face the wide side towards the power arc located above them.

Behind the front lower sections of the power arches 24 there is a motor shield 42 connected to a transverse beam 28 connecting the power arches under the windshield, with the lower boxes 35 of the door hinge hinges and with curved longitudinal beams 36. A figured cab bottom 43 is connected to the motor shield 42 which is its basis. The bottom 43 is attached to the transverse beam 41, which connects the lower sections of the rear support struts 27, and to the lower longitudinal beams of the cab frame.

The door 11 of the cab 5 contains a tubular frame 44 (figure 4), made in the form of a flat truss, to which the panel 16 is attached. The door frame contains three long tubular pillars of a rectangular profile, namely an arcuate front pillar 45 having the shape of a front pillar 25 of the cab frame, a direct middle rack 46 and a straight rear rack 47. The racks face each other with a wide side. The middle door pillar 46 is tilted toward the rear pillar 47, so that the distance between them below is greater than above. All said door racks are connected at the top with a convex arcuate tubular beam 48. At the bottom, door racks 45 and

46 are attached to a concave arcuate tubular beam 49 located above the arcuate rear portion of the curved beam 36 having the shape of a wheel wing 3. The rear door post 47 is attached to a straight tubular beam 50 located above the threshold of the cab. The straight beam 50 is connected to the arcuate beam 49, forming with it a composite lower beam of the door frame. The opening between the front pillar 45 and the middle pillar 46 of the door frame, forming a large front window 13 of a large height in the door under the cab roof above the wheel wing 3 between the upper and lower beams 48 and 49, is closed by a flat overlay glued to them, for example, of glass. The presence in each side door of the cab of a large front window 13 with glass glued to the uprights and beams of the door frame 44 provides a good overview of the path to the side of the machine. In this case, the large front window 13 also performs the function of an emergency exit from the cab in case of jamming of its doors, for example, when the cab is deformed in the event of a car collision with an obstacle. To exit the cab through window 13, you only need to first break the glass of this window. Behind the transparent portion of the front window 13, between the lower end of the door pillar 45 and the middle portion of the door pillar 46, an arcuate beam 51 connected to them is installed by welding. Opposite the arcuate beam 51 on the front door pillar 45 are brackets 52 for connecting the door pillar 45 to the front frame support 25 of the frame cab hinged door hinges located in the boxes 34 and 35, articulated with the tubular parts of the front support strut 25. On the same circumference with the beam 51 between the middle pillar 46 and the rear pillar 47 of the door frame under room 14 is an arcuate window sill beam 53, which has a width less than the width of the racks. A short intermediate tubular post 54 is connected to the window sill 53 and the arcuate beam 48 located at the top, which is parallel to the middle post 46. Between the posts 46 and 54 there is a U-shaped guide frame 55 adjacent to them, to the arcuate beam 48 and to the window sill 53. The legs of the frame 55 are connected

by welding with uprights 46 and 54 and with beams 49 and 50 located below. In the frame 55, which forms the opening of the rear window 14 in the door, a groove is made on the inside for installing the lowering glass. A door lock 56 is located under the window 14 behind the panel 16 between the leg of the U-shaped frame 55 and the rear pillar 47. Opposite the lock 56, a recess 57 is made in the middle rack 26 of the cab frame to install the locking element of the lock interacting with its bolt. Opposite the niche in the middle strut 26 formed by the recess 57, between the middle strut 26 and the rear strut 27 of the cab frame, there is an expansion element 58 having a channel profile.

To enter the cabin 5, open the door 11, which, due to its large width, provides easy access to the seat in the cabin, which is very convenient if you need frequent entry and exit from the cabin when performing various technological operations, especially during agricultural operations. When the car moves on arable land or in a meadow, the driver is provided with a good view of the terrain through the windshield 10 and through the windows in the sidewalls and in the cabin doors, due to its essentially circular glazing and especially the presence of a large window 13 having a large height in the door. This allows you to conveniently monitor the situation on the side of the machine when working with agricultural implements.

In the created spacious cabin, which has wide glazed doors fixed on the specified frame, the driver is provided with a comfortable stay when performing agricultural work, which helps to increase labor productivity. Due to the fixing of the front window and the roof of the cabin on the single frame elements formed by power arcs of long length, located in front of the engine shield and extending to the rear wall of the cabin with support on each side of the cabin, three struts connected to them, connected together below to form closed loops, are provided the reliability of the frame of this cabin, designed for a multi-purpose machine.

Claims (3)

1. The tubular frame of the cab of the wheeled vehicle, made in the form of a spatial truss, characterized in that it consists of tubular power arches with tubular support front, middle and rear struts located under them, tubular transverse beams connecting power arcs and rear struts, tubular longitudinal beams connecting the lower ends of the power arcs and support pillars. 2. The tubular frame of the cabin according to claim 1, characterized in that the front strut is convex towards the power arc and connected to it at the junction of the transverse beam located above the windshield opening, while the front strut is additionally connected to the power arc located between them under the opening of the front window of the sidewall of the longitudinal beam connected to the power arc at the junction of the transverse beam located under the windshield opening, the middle and rear pillars are made straight and connected longitudinally beam located below the power arc under the opening of the rear window of the sidewall, the rear struts are interconnected by a transverse beam located near the rear upper ends of the power arches, a transverse beam located at the level of the longitudinal beams connecting the middle and rear racks in the gap between their ends , and a transverse beam located near their lower ends, the lower ends of the support posts on each side of the frame are connected to each other and to the lower end of the power arc. 3. The tubular frame of the cabin according to claim 2, characterized in that there is a shield behind the power arches connected to a transverse beam connecting the power arches under the windshield opening and to the longitudinal beams connecting the lower ends of the power arc and the front strut.