CH303875A - Installation for road surfacing. - Google Patents

Description

Installation for the surfacing of roads. 0n has described in the main patent N 278501, filed on July 9, 1949, a process and an installation for the 1st tarring and the 1st gravelling of the roads remedying, with a very Brande efficiency, the disadvantages of the prior practice recalled dass 1st main patent.

The installation described in the main brev was characterized by the combination of a tipper truck working in forward motion and an external truck with a gritter towed by the tipper truck, tipper and in turn towing the first truck. tank, the gravel spreader carrying a hopper fitted with a gravel distribution mechanism and a tar distribution ramp placed in front of the said hopper, in the normal running direction of the installation, the tar distribution ramp being fed from the truck hitched behind the gravel spreader and the hopper being supplied with gravel by the dump truck.

Thanks to the use of the installation, the subject of the main patent, it was possible to carry out the tarring and the gravelling of a road in forward motion and ensure the spreading of the gravel immediately after that of the binder.

The subject of the present invention is a development of the invention described in the main patent, development aimed more particularly at the spreading of the hydrocarbon binder as well as that of the gravel and making it possible to cover the wheel with more or less coating. -. thick and more or less wide. It therefore relates to an installation for the implementation of a process for the first surfacing of roads, consisting in spreading the binder in front of the tank truck and the gravel immediately afterwards, also in front of the tank truck. , so that the gravel spreads over a fluid binder and is coated by this binder, an installation in which a dump truck working in forward motion and a truck are combined with a gravel spreader towed by the truck to tipper and in turn towing the tanker truck, the gravel spreader carrying a hopper fitted with a gravel distribution mechanism and a binder distribution ramp placed in front of said hopper, in the normal running direction of the installation, the ramp distributor of the binder being fed from the trailer hitched behind the gravel spreader, and the hopper being fed with gravel by RTI ID="0001.0269" WI="3" HE="3" LX="1243 "LY="2030"> 1st tipper truck, installation characterized in that the gravel spreader comprises a chassis comprising two longitudinal beams, a pipe which cooperates with a pipe carried by the tanker truck, a pump sucking the binding material through the aforesaid pipe and conduit and pushing the binder back into one of the side members of the frame, the binder spreading ramp being placed between the two side members, and the gravel distribution mechanism at the part lower part of the hopper and at the rear of the binder spreading ramp, means being then provided for adjusting the width of the binder jets produced by the binder spreading ramp and for adjusting the width of the distribution of gravel produced by the gravel distribution mechanism.

To better understand the object of the invention and to facilitate its implementation, we will now describe, by way of example only and without any character limiting its scope, a form of execution of the installation. represented in a completely schematic manner in the appended drawing, in which: FIG. 1 represents, in elevation, the complete installation.

fig. 2 shows, seen in elevation, to a larger scale, the front axle of the trailer of the installation.

fig. 3 is a plan view of the front axle of the trailer.

fig. 4 shows, seen in plan, the device controlling the gravel spreading roller.

fig. 5 is an end view of the individual shutter control sector.

fig. 6 represents, seen in elevation, the same sector.

fig. 7 is a plan view of this sector. fig. 8 shows, in perspective view, the hopper with the handles controlling the gravel flow shutters.

fig. 9 represents, on a larger scale, the opening handle of each shutter. Figs. 10 and 11 show, respectively, in the open and closed position, the handles of the shutters.

fig. 12 shows the device for locking the binder diffusers, seen in elevation.

Figs. 13 and 14, finally, represent in two different positions, seen from the side, the device for locking the diffusers.

Referring first to FIG. 1, it is seen that the trailer 1, in which the entire device for spreading the binder and the grit is united, is attached, by a fastening device 2, to a dump truck 3, of the type usual, moving in the direction of arrow F under normal operating conditions. Behind the trailer 1, an splint, thanks to the attachment device 4, a tank truck 5, also of the usual type.

The trailer 1 essentially comprises an iron frame 6, a limber ä. a single wheel 7, a rear axle with four wheels 8, a hopper 9 into which the gravel is poured by tilting the bucket 10 of the truck 3 (when this bucket 10 is in the position 10 'represented in interrupted lines pus, the first shutter 11 being open), a device 12 for spreading the binder and a device 13 for spreading the gravel. The trailer includes; in addition, a pump 14 sucking the binder from the tank truck 5 and sending it into the binder spreading device 12, pump 14 driven by a motor (arranged behind the pump in FIG. 1) adopts the exhaust gases. - pment are used to heat the various bodies or eonduits, in which circulates the first binder.

The binder which is in the tank truck 5 leaves the latter through the pipe 15 connected to the pipe 16 of the trailer by a fire brigade connection 17. The binder sucked up by the pump 14 is sent by it through the pipe 18 in one of the two sides of the frame 6. Each side of this frame is made of a U iron whose 1st void of the wings has been closed by a welded flat iron, thus forming a pipe 6 for the binder; the latter arrives from the pump via one of the side pipes 6 and leaves via the other to arrive at the pipe 19 connected by a fire brigade connection 20 to the return pipe 21 of the tank truck 5. Between the two pipes 6, supply and return of the binder, is intereale the ramp or device 12 for spreading the binder, which will be described in detail ei below.

The gravel is spread just behind the binder by a spreading device 13 also described in more detail below, and which is controlled by the lever 22.

The front end (fig. 2 and 3) is constituted by two circular raceways 23 and 23a., the first raceway 23 being fitted to the frame of the machine and the first path 23a. to the frame of the front end. These two raceways have grooves in which balls 24 are housed. The hub 25 of the fore-end is mounted on balls and is easily removable, the axle 26 of this hub being fitted into two notches 27.

The trailer 1, when it is empty, is balanced on the rear wheels 8, which makes it possible, in the event of a puncture, to quickly replace the front wheel 7.

The coupling device 2 enters the first Truck 3 . A tipper and the trailer 1 is constituted by an automatic hook 28 ecom- taining a device 29 for locking the hook 28 to avoid any untimely deerochage During the Tors displacements of the work. To allow attachment when the tractor vehicle 3 is not exactly opposite the hook 28, the driver has a removable tube 30 which he engages in an appropriate orifice 31 of the front axle. He can thus maneuver from a distance and vary the orientation of the front end by the angle necessary to allow the engagement of the coupling hook 28 in the complementary element 32 of the trailer 3. is carried out, it suffices to withdraw the first removable tube 30. To unhook the trailer 1, one presses a Pedal 33 which transmits the first movement to the hook 28 @ by means of a flat circle 34 eoncentric to the front end. and fixed thereto by a pin 35 at its rear, the front of the flat circle 34 resting on the Pedal 36 of the hook 28 by two pegs 37.

The rear axle comprises, as in the first year, seen in fig. 4, two pairs of wheels 8 mounted on hubs 38 having ratchet power take-offs 39 which disengage automatically when reversing or on curves. 0n has provided on each hub 38 a fork engaged in a groove 40 connected to the movement control and which ensures the engaged or disengaged position.

On the idler parts of the axle are arranged sprockets 41 which, via roller chains 42, drive the gravel distributor 43 via the torque converter 44 and the roller chain 45.

The hopper, or body, 9 of the trailer 1 consists of sheet metal assembled by angles. It rests on frame 6 and can be dismantled to allow inspection of the devices and replacement of worn parts. It is in this hopper 9 that the gravel spilled during the RTI ID="0003.0275" WI="19" HE="4" LX="1340" LY="759"> tipping of the tipper 10 of Truck 3. The side surfaces 46 of the hopper 9 have been reinforced to support the axis of the roller 43 distributing the gravel, as well as the axis 47 of the shutters 48 regulating the flow of the materials to be spread.

The binder spreading device proper is fed, as mentioned above, by the pump 14 delivering the binder in one of the side members 6 up to the spreading boom 12. This boom is of constant circulation and is composed, for example, of , of about twenty bees 12a each producing a flat jet 49 forming an angle of approximately 30 with the normal to the road (see FIG. 1). In this way, four successive Jets cover the road.

All the Jets 49 are controlled by a single lever 50, the number of open jets being able to be changed at any time without stopping the installation.

0n has several independent commands 51a. each opening two, three or four nozzles 12a, which makes it possible to obtain the desired intermediate width for spreading the binder.

Each control 51a opening several bees 12a is constituted, as can be seen in FIGS. 12, 13 and 14, by a shaft 51 which passes through the hopper 9 in the first plane of the gerons of the frame 6 and which carries, keyed at each end, two connecting rods 52 and 59 (fig. 1). Against the link 52 keyed on the rear end of the shaft 51 is arranged a second link 53 free on the shaft. The free rods 53 are interconnected by a flat iron 54 which can be aetioned by a lever 50 thus causing the maneuver of the assembly of these rods 53. For the rods 12a to be maneuvered by the first lever 50, it is make the pairs of connecting rods 52 and connecting rods 53 corresponding to these beaks integral. On the contrary, a Link 52 in Locked Position will leave the corresponding 1st beak Closed. The control is carried out by yokes 55 which, in the front position (fig. 13), make the two corresponding links 52 and 53 integral, and which, in the rear position (fig.1-1) block the control fax 51 , the rod 56 extending the yoke 55 being embedded in an angle 57.

Towards the front, above the ramp, the taps 58 which close the spouts 12a are operated by the aforementioned links 59 fixed to the front end of each shaft 51. These shafts 51 pass through the hopper 9 at the height of suitable in the plane of the side members 6.

When the bees 12a are closed, or when the pressure, during spreading, exceeds the desired pressure, the binder returns to the tank truck 5 by the other spar 6 serving as a return, after having passed through a valve. or adjustable check valve, making it possible to obtain a constant pressure, whatever the number of open spouts 12a. This valve is initially heated by the engine gases, like the pump, to avoid an overpressure which would occur if the valve remained closed at the start.

The gravel spreading device is arranged at the rear of the hopper 9 serving to. receive the 1st gravel from Truck 3 (fig. 1).

The rear of the hopper 9 is constituted by two sheets 60a and 60b (fig. 10, 11) between which can slide shutters 60 formed by strips of sheet metal of various widths. These shutters 60, in the down position (fig. 11), prevent the first contact of the gravel with the first roller 43, thus reducing the spreading width. On the contrary, in the position at the top (fig. 10), they disengage the first roller 43. on the obturator (fig. 9). The rod 64 of this cleat 62 comes to rest on the first upper edge 65 of the plate 60b of the hopper, when you want to maintain the shutter in the position at the top corresponding to the free passage of the gravel (fig. 10). The handle 61 fixed to each obturator allows easy maneuvering of the mobile cleat 62 and therefore of the obturator: it suffices to raise the cleat 62 so that the obturator plate 60 can be pushed back into the corresponding position in bar. when closing (fig. 11). In fig. 8, an has represented in the upper position the cleats RTI ID="0004.0272" WI="5" HE="4" LX="1340" LY="877"> 62a and in the lower position the cleats 69b.

The shutters 60 are guided between the sheets 60a and 60b by spacers and pins 66.

The Brav illon descending from the hopper 9 is driven by the first roller 43 which rotates. the proper speed, driven by roller chain 45 (Fig. 4). As we have seen, the maximum spreading width of the chippings can be reduced by means of shutters <B>60.</B>

It is also possible to adjust the thickness of the grau illon carpet by acting on the flaps 48 which can rotate around an axis -17 to thus release an adjustable variable opening (fig. 1). The maximum opening of the flaps, however, corresponds to the maximum lift of the shutters 60. Several flaps are provided whose length corresponds to the width covered by the control rods together. You can adjust each flap individually, this adjustment allowing you to reduce the thickness of the belt on the edges to facilitate pick-ups.

L7n general lever 22 controls turn of the flaps at the same time, respecting the 1st individual adjustment. Indeed, thanks to a device, represents in more detail on the ends. 5, 6 and 7, the flap or flaps 48 closed by the individual adjustment remain in place when Fon activates the general control 22. pass a stone of any size, possibly a tuft of grass, etc., and then bring it back immediately to its initial position, without affecting the adjustment of the neighboring flaps.

A stop screw 70 maintains each flap 48, when it is in the closed position, at a suitable distance from the roller 43, for example 4 mm, to prevent the latter from jamming.

The individual adjustment of each shutter is obtained by the first device shown in detail in FIG. 5, 6 and 7.

The overall control lever 22 acts on a shaft 67 which carries, in line with each shutter, an arm 68 at the top of which an angle iron 69 is welded.

Between an arm 68 and a stop 71, fixed by a screw 72 on the shaft 67, are housed a seetor 73 and a cleat-carrying arm 74, these two parts rotating freely on the shaft 67.

The sector 73 is pierced at its upper part with a series of equidistant holes 75, in which the cleat 76 can be housed, which is held in the chosen hole by a spring 77.

When, for example, the first cleat 76 is placed in the first hole 75 further forward in FIG. 5 (1st further to Bauche in fig. 6) and that 1'on pulls to the right on the lavier 22, the 1st arm 68 deerit an arc of a circle towards the rear, and the stop 81, welded in front of the angle 69, strikes the first cleat 76 and causes the first sector 73. The Base 78 of the sector 73, which is connected by a rod 79 to the corresponding flap, then opens this flap.

When the first lavier 22 is brought forward, a return spring, not shown, acting along the wane 80, pulls on the rod 79 and the corresponding first flap closes.

The shutter therefore only opens when the stop 81 of the arm 68 touches the cleat 76 in the middle of the first hole 75 of the sector 73. It therefore follows that, the more the 1st cleat will be . 5 (to the right in Fig. 6), the more the opening will be delayed.

As the sector 73 and the cleat arm 74 rotate freely on the shaft 67, there are abutments to maintain these two parts in a suitable position: at the front, they both abut against a welded flat iron 69a. on the angle 69 and, at the rear, the Base 78 of the sector 73 abuts against the adjusting screw 70 and the 1st cleat carrier 7.1 against the right-hand pin 82 welded to the sector 73.

There are as many flaps as there are sectors on the general adjustment shaft, the length of the flaps corresponding to the width opened by each series of slats controlled together.

When RTI ID="0005.0277" WI="6" HE="4" LX="1313" LY="763"> it is desired to spread binder and gravel on a road with the trailer 1, the first Truck 3 being full of grau illon and the tank truck 5 full of binder, an starts the 1st motor, the gas heats the pump 14, the spreading boom 12 and the pipes 6, an switches the awning 10 to 10' Truck 3 to fill the hopper 9 with gravel, an individually adjusted las shutters 48, las shutters 60 and las valves adjusting las beaks 12c to obtain the width of the strip of sir6e and year starts. At this time, an actuates the first laver 50 which also serves as a clutch for the first gravel roller, which opens the taps and sets in motion the first roller 43 gravel distributor. The speed of travel is regulated by a meter, and the driver will maintain the speed of the truck tractor 3 at the speed corresponding to the chosen ramp. When the awning 10 of Truck 3 is empty, he replaces this Truck with another Truck whose awning is filled with gravel, after disengaging and closing the taps at the same time. To start again, the assembly is reversed (it is the tank truck 5 which is started) in order to be able to set off again in forward motion (direction of the wane F) a little behind the stop line. When the first tank truck 5 is empty, the first replaces it with a full tank truck.

Claims (14)

CLAIM: Installation for the implementation of a process for surfacing roads, consisting in spreading the binder in front of a roadside truck and the gravel immediately afterwards, also in front of the tanker truck, so that the gravel spreads over a fluid binder and is coated by this binder. Installation in which a dump truck working in forward motion and a tanker are combined with a gritter towed by the dump truck and towing in turn, the tank truck, the gravel spreader carrying a hopper fitted with a gravel distribution mechanism and a binder distribution ramp placed in front of the said hopper, in the normal running direction of the installation, the distribution of the binder being supplied from the tank truck hitched behind the gravel spreader and the hopper being supplied with gravel by the dump truck, installation characterized in that the gravel spreader comprises a. chassis comprising two longitudinal beams, a pipe which cooperates with a pipe carried by the tanker truck, a pump sucking the binder from the tanker truck through the aforementioned pipe and pipe and delivering the binder into one of the members of the frame, the binder spreading ramp being arranged between the two longitudinal members, and the gravel distribution mechanism at the lower part of the hopper and at the rear of the binder spreading ramp, means being, then, designed to adjust the width of the binder jets produced by the binder spreading boom and to adjust the width of the gravel distribution carried out by the gravel distribution mechanism. . SOL S-I@E@'E@,@ICATIOI S 1. Installation according to claim, characterized in that the binder spreading mechanism is composed of several nozzles each producing a flat jet, these nozzles being grouped in series from dein to four bees, each of these series can be ordered separately. 2. Installation according to claim and sub-rev endication 1, characterized in that each control opens a series of Jets is constituted by im shaft carrying keyed etees at one end a Linkage controlling the first valve actuating the jets and at the other end eitr6 - mite another connecting rod, sleeps an can make integral at will a third connecting rod rotating freely on the shaft, the set of connecting rods rotating freely kant connected by a flat iron which is intended to be aetionned by the first general control lever beaks. 3. Installation according to claim and sub-claims 1 and 2, characterized in that the securing of each rod freely rotating with the rod clav etee on the adjacent shaft is carried out by means of a clevis which in a position makes RTI ID ="0006.0275" WI="7" HE="4" LX="1879" LY="804"> the two connecting rods are integral and, in the other position, is made integral with a fixed pike by embedding its extension in a notch provided in a fixed angle. 4. Installation according to claim, ea- characterized in 2nd that the pump is controlled by a motor disposed on the trailer, the gases of the motor serving to heat the different pipes Jans which circulates the first binder, and furthermore a retaining valve re - adjustable provided between the dein beams and serving to maintain constant pressure in the pipes, regardless of the first number of open nozzles. 5. Installation according to claim, characterized in that the device for spreading the grit contained in the hopper comprises a grit distributor roller and comprises a double adjustment: an adjustment relating to the width of the gravel carpet and an adjustment relating to the thickness of the gravel carpet. 6. Installation according to claim and sub-claim 5, characterized in that the spreading width of the gravel is regulated by a series of shutters which can slide between two fitted sheets forming the inclined bottom wall of the hopper receiving the first These obturators can occupy two positions: a lower position, in which their lower end almost comes into contact with the gravel distributor roller, and an upper position, in which a wider passage is open to the flow of grau illon. 7. Installation according to claim and los soas-rev endieations 5 and 6, characterized in that each shutter is fitted with a handle and a cleat mounted on a welded axis on the shutter, and in that, in the upper position 1'obturateur, a stem of the cleat comes to rest on the first upper edge of the fixed plates framing 1'obturateur. B. Installation according to. claim and sub-claim 5, characterized in that the thickness of the grau illon carpet is regulated by acting on flaps rotatable around a fixed axis to release a variable opening sleeps the mazimuni corresponds to the lifting maximum shutters. 9. Installation according to claim and sub-claims 5 and 8, characterized in that the trailer comprises as many flaps as there are series of slats, the length of the flaps corresponding to the width covered by each series of controlled slats together, and that the opening of each shutter can be regulated individually. 10. Installation according to claim and sub-claims 5, 8 and 9, characterized in that a general lever makes it possible to control all the shutters at the same time, while respecting the individual adjustment, the first or the. shutters closed by the first individual adjustment remaining in place when the general control is operated. 11. Installation according to claim and sub-claims 5, 8 and 9, characterized in that the flap adjustment device comprises a shaft on which the assembly control lever acts at one end and which posts at the right of each shutter and wedges On itself a stop and an arm at the top of which is welded an angle iron, and in that a sector comprising a series of holes and a cleat-carrying arm, centers on this shaft in front They are arranged between the stopper and the arm, the cleat being able to enter one of the aforementioned holes in which it is held in place by means of a spring. 12. Installation according to claim and the sub-claims 5, 8, 9 and 11, characterized in that the angle iron comprises, welded forwards, a stop as well as a flat iron intended to limit the movement of the rotation of the sector and of the cleat carrier arm in one direction, the movement of the sector in the other direction being limited by an adjusting screw and that of the cleat carrier in this other direction by a pin welded to the seetor. 13. Installation according to claim, characterized in that the trailer comprises at the front a coupling device comprising a hook, locking means and a transverse orifice intended to. RTI ID="0007.0275" WI="13" HE="4" LX="1524" LY="1383"> receive a removable tube allowing the first coupling hook to be directed in the suitable direction to ensure attachment with the first Dump truck dragging the trailer. 14. Installation according to claim, characterized in that the trailer comprises at the rear a coupling device with the tank truck and two pipes terminated by sockets cooperating with corresponding sockets of the truck. tank, two cooperating sockets forming a liquid-tight connection.