Road construction device and method for retrofitting road construction device
By designing a multifunctional road construction device, using the combination of the front frame and the rear frame and the auxiliary equipment, the dual functions of paving and edge filling are realized, and the high cost problem caused by the expensive independent devices in the prior art is solved and the construction is reduced Cost and improve construction efficiency.
Patent Information
- Application Number
- CN202380039663.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-03-15
- Filing Date
- 2023-03-15
- Publication Date
- 2024-12-20
AI Technical Summary
In existing road construction, the equipment required for paving base and edge filling is independent and expensive, resulting in high construction costs.
Design a multifunctional road construction device that can be used as a paving device or edge filling on the working machine through a combination of the front frame and the rear frame, equipped with paving blades, transverse guides, adjustment actuators and edge filling equipment. The device is used to convert the two functions through minor modifications.
The two operating stages of paving and edge filling of a single device are realized, which reduces construction costs, reduces labor and equipment demands, and improves construction efficiency and equipment maintenance.
Smart Images
Figure CN119173667A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a road construction device configured to be used as a paving device for paving road construction material and configured to be attached to a working machine, wherein the road construction device comprises: a front frame and a rear frame, the front frame and the rear frame being joined together and configured to form a feed reservoir for road construction material; a mouth formed in the feed reservoir, from which the road construction material is fed under the rear frame; a paving blade arranged on the rear frame for limiting the road construction material exiting from the mouth to form a layer on the road surface; a transverse guide attached between the front frame and the rear frame on both sides of the feed reservoir for limiting the transverse paving of the road construction material to a selected width; an adjustment actuator for adjusting the distance between the paving blade and the surface of the road; and an attachment member attached to the rear frame. The invention also relates to a method for modifying a road construction device. Background Art
[0002] An important stage of operation in road construction and ground improvement is the laying of the base course. The base course usually consists of gravel, crushed stone or some other suitable type of earth material. If the laying of the base course fails, the road structure will not be strong enough and will not meet the specified structural requirements.
[0003] Another important operation phase is the filling of the road edges. During road construction or ground improvement, the road edges are filled with suitable soil materials to support the actual road. When an existing road is widened, the road edges are filled with a base layer.
[0004] Under current technology, these two different operating phases require two completely separate devices to be used as attachments on the work machine.
[0005] In the prior art patent publication EP2377993A2, a paving device for paving road construction materials is disclosed, which is attached to an attachment member of a working machine instead of a bucket. Earth material is poured from a separate transport vehicle into a feed reservoir of the paving device for paving road construction materials, and the earth material is spread in front of the working machine from a mouth located at the bottom of the feed reservoir by a paving blade into a uniform layer of a selected width below the paving device. Both sides of the paving device for paving road construction materials have adjustable transverse guides, with the help of which the earth material can be spread in a desired width.
[0006] Patent publication CA2990253C shows the prior art related to the edge filling device. In the edge filling device according to the prior art, soil material is usually poured into a feed reservoir from a transport vehicle, and a conveyor belt located at the bottom of the feed reservoir conveys the soil material from one side of the edge filling device to the edge of the road. Therefore, the tires of the working machine using the edge filling device are always kept on the road, and the soil material is leveled at the edge of the road by the edge filling wings located on the side of the edge filling device.
[0007] Edge filling devices differ significantly from paving devices for spreading road construction materials in that paving devices for spreading road construction materials spread the road construction material directly in front of a working machine using the same road construction material, whereas edge filling devices transport and spread the road construction material to the working machine on the side of the road edge. The road edge is also often formed to be inclined relative to the road and may also be located in a different plane from the road in the height direction. Therefore, edge filling devices and paving devices for spreading road construction materials each require different adjustability.
[0008] A problem with the prior art is that the spreading devices and edge filling devices for spreading the road construction material are very expensive, which leads to high costs for road construction. Summary of the invention
[0009] The object of the invention is to provide a new road construction device which enables the overall costs of road construction to be reduced. The features of the invention are indicated in the attached patent claim 1. Another object of the invention is to provide a new method for modifying a road construction device which enables the overall costs of road construction to be reduced. The features of the invention are indicated in the attached patent claim 19.
[0010] The road construction device according to the present invention is configured to be used as a paving device for paving road construction materials and is configured to be attached to a working machine, the road construction device comprising: a front frame and a rear frame, which are joined together and configured to form a feed reservoir for road construction materials; a mouth formed in the feed reservoir, and the road construction materials are fed from the mouth to below the rear frame; a paving blade arranged on the rear frame, which is used to limit the road construction materials leaving the mouth to form a layer on the road surface; a lateral guide, which is attached between the front frame and the rear frame on each side of the feed reservoir, and is used to limit the lateral paving of the road construction materials to a selected width; an adjustment actuator, which is used to adjust the distance between the paving blade and the surface of the road; and an attachment member attached to the rear frame, which is used to attach the road construction device to the working machine. The road construction device may be configured to alternatively be used as an edge filling device instead of for spreading road construction material, and the road construction device further comprises an edge filling apparatus configured to be supported on the road construction device in place of the lateral guide, wherein the edge filling apparatus comprises a conveyor for conveying road construction material from a feed reservoir to a side of the road construction device, wherein the conveyor may be configured to be detachably arranged at the bottom of the feed reservoir so as to advantageously block the mouth.
[0011] Surprisingly it has been found that the same road construction device can be configured with only minor modifications to be used both as a paving device for spreading road construction material and as an edge filling device. The end user of the road construction device according to the invention is able to independently complete the transition from a paving device to an edge filling device within a reasonable time. Thus, the road construction personnel do not need to purchase two separate and expensive attachments weighing several tons for the working machine, but can use a single road construction device to perform both operating phases. Considering the labor costs, it is obviously cheaper for the end user to purchase and use a single road construction device according to the invention that can adapt to two different operating phases than to purchase two completely independent devices according to the prior art for each operating phase. As a result, the overall cost of road construction is significantly reduced than before.
[0012] Advantageously, when the road construction device is used as an edge filling device, the hopper is arranged in the feed reservoir, wherein the conveyor is attached to the bottom of the hopper. Thus, the road construction material poured into the feed reservoir can be directed more effectively onto the conveyor and prevented from ending up under the rear frame of the road construction device during edge filling. In the case of, for example, filling the edge of an asphalt road surface, it is undesirable for loose road construction material to end up on the asphalt surface. Due to the hopper, there is no need to clean the road surface after edge filling.
[0013] On one side of the road construction device, between the front frame and the rear frame, there can always be a transverse guide. When the road construction device is converted from a paving device to an edge filling device, one of the transverse guides can remain in place, so that the conversion operation can be completed more quickly.
[0014] Advantageously, the conveyor is a conveyor belt or a vibrating conveyor. A conveyor belt is a reliable way to transport the road construction material from the feed reservoir to the side of the road construction device. As for the components of a vibrating conveyor, a vibrating conveyor has fewer parts that are subject to wear, so that the maintenance intervals of the road construction device can be longer.
[0015] Advantageously, the front frame and the rear frame are substantially symmetrical in the transverse direction. The frame of the prior art edge filling devices is usually reinforced on the side where the road construction material is paved and is therefore subject to greater stress. Therefore, the road construction device according to the invention can also withstand the loads acting on the road construction device as a paving device. The symmetry also enables edge filling to be performed on the desired side of the road construction device.
[0016] Advantageously, the road construction device comprises support wheels attached to the front frame. Thus, the working machine does not have to lift the road construction device in the air, but can push the road construction device while the support wheels support the road construction device on the ground. This also enables the road construction device to be pushed using a working machine that is lighter than designed, if necessary.
[0017] The road construction device comprises a second support wheel attached to the rear frame. Thus, the road construction device can be configured to run more smoothly. The second support wheel can also support the weight of the road construction device, so that the working machine pushing the road construction device is subjected to less load.
[0018] Advantageously, both ends of the conveyor extend to selected locations outside the feed reservoir. This can increase the volume of the feed reservoir so that the road construction device can process road construction material more quickly when used as an edge filling device.
[0019] Advantageously, the road construction device comprises a bumper attached to the front frame. Thus, in an operating situation, the bumper of the road construction device can be driven into contact with the rear of a transport vehicle carrying road construction material, so that the road construction material poured from the transport vehicle falls more reliably and completely into the feed reservoir.
[0020] The road construction device may comprise a hooking member arranged on the bumper. By means of the hooking member, the road construction device can be attached to a transport vehicle carrying road construction material, which prevents an accidental gap from being created between the road construction device and the transport vehicle, causing the road construction material to end up in the wrong position, and which in turn allows the entire road construction material dumped from the transport vehicle to fall into the feed reservoir more reliably than before.
[0021] Advantageously, the mass of the working machine for moving the road construction device is at least 10 tonnes, most advantageously at least 12 tonnes. The working machine is therefore dimensioned to be able to handle heavy road construction devices. However, if necessary, the design values may be deviated from by using a lighter machine, which can push the road construction device but not necessarily lift it.
[0022] Advantageously, the edge filling device further comprises edge filling wings for leveling the road construction material on the side of the road construction device, wherein the edge filling wings can be arranged on the side of the feed reservoir, advantageously instead of the transverse guides. Thus, the road construction material spread on the side of the road construction device can be leveled and shaped close to the road. When the edge filling wings are attached instead of the transverse guides, the same attachment means and control system (e.g. hydraulic system) used for attaching and controlling the transverse guides can be used for attaching and controlling the edge filling wings.
[0023] Advantageously, when the road construction device is used as a paving device, the transverse guide is attached to the front frame or the rear frame by means of a transverse displacement device, and when the road construction device is used as an edge filling device, the conveyor and the edge filling wings are attached to the front frame or the rear frame by means of a transverse displacement device, the transverse displacement device comprising a sliding rod and a hydraulic cylinder configured to move the sliding rod in a transverse direction. In this way, when the road construction device is used as a paving device, the transverse guide can be moved in a transverse direction, which makes it easy to define the transverse paving of the road construction material. Therefore, when the road construction device is used as an edge filling device, the conveyor and the edge filling wings can be easily moved as a whole in a transverse direction, which makes it easier for the working machine to follow a transport vehicle carrying the road construction material.
[0024] Advantageously, the edge filling wing is arranged on a lateral displacement device by means of a vertical sliding rod, on which a hydraulic cylinder configured to move the edge filling wing in the vertical direction is arranged, wherein the vertical sliding rod is attached to the lateral displacement device in an articulated manner so as to be adjustable by means of the hydraulic cylinder. This enables easy adjustment of the height and inclination of the edge filling wing.
[0025] Advantageously, the edge filling wing comprises a frame element, an extension element and an end element, wherein the frame element is attached to the vertical sliding rod in an articulated manner so as to be adjustable by means of a hydraulic cylinder, the frame element and the extension element are configured to be moved relative to each other by means of the hydraulic cylinder, and the end element is attached to the extension element in an articulated manner so as to be adjustable by means of the hydraulic cylinder. Thus, the angle and length of the edge filling wing can be easily adjusted.
[0026] The length of the edge filling wing can be adjusted within the range of 1.5-3.0 m, advantageously within the range of 1.7-2.5 m. The road construction device is therefore very suitable for edge filling operations at various sites. However, the edge filling wing can be scaled to any size for use.
[0027] Advantageously, the road construction device comprises measuring means for determining at least the height, width and inclination of the edge filling wing. This enables the position of the edge filling wing to be easily monitored, which also allows the edge filling wing to be arranged in a desired position.
[0028] The edge filling device may also comprise an extension conveyor for conveying road construction material at the side of the road construction device, wherein the extension conveyor may be arranged at the side of the feed reservoir, advantageously replacing the transverse guide. Thereby, edge filling may also be performed further away from the road. For example, a ditch on the other side of a ditch 130 extending along the road may be filled with the aid of the extension conveyor.
[0029] Advantageously, the extension conveyor is configured as an extension of the conveyor such that the road construction material is configured to fall from the conveyor onto the extension conveyor. Thus, the conveyor and the extension conveyor cooperate seamlessly in such a way that the road construction material poured into the feed reservoir is transferred to the extension conveyor and on to the location to be filled.
[0030] In a method for modifying a road construction device according to the present invention, a paving device for paving road construction materials is modified, wherein the paving device for paving road construction materials includes: a front frame and a rear frame, which are joined together and configured to form a feed reservoir for road construction materials; a mouth formed in the feed reservoir, and the road construction materials are fed from the mouth to below the rear frame; a paving blade arranged on the rear frame, which is used to limit the road construction materials leaving the mouth to form a layer on the surface of the road; a lateral guide, which is attached between the front frame and the rear frame on the side of the feed reservoir, and is used to limit the lateral paving of the road construction materials to a selected width; an adjustment actuator, which is used to adjust the distance between the paving blade and the surface of the road; and an attachment member attached to the rear frame, which is used to attach the road construction device to a working machine. In the method, a paving device for paving road construction material is converted to function as an edge filling device by performing the following steps: removing at least one transverse guide and installing a conveyor in a feed reservoir, the conveyor transporting the road construction material fed into the feed reservoir to one side of the road construction device, advantageously installing the conveyor in the feed reservoir in such a way that the conveyor blocks the mouth. Thus, the same road construction device can be configured with minor modifications to function both as a paving device for paving road construction material and as an edge filling device.
[0031] Advantageously, when the road construction device is used as an edge filling device, a hopper is also installed in the feed reservoir and a conveyor is attached to the hopper. Thus, the road construction material poured into the feed reservoir can be directed more effectively onto the conveyor and is prevented from ending up under the rear frame of the road construction device during edge filling.
[0032] Advantageously, when the road construction device is used as an edge filling device, the road construction device is also equipped with edge filling wings, wherein the edge filling wings are attached to the sides of the road construction device, advantageously replacing the transverse guides, in order to level the road construction material on this side of the road construction device. Thus, the road construction material spread on the side of the road construction device can be leveled and shaped close to the road.
[0033] When the road construction device is used as an edge filling device, the road construction device can also be equipped with an extension conveyor, wherein the extension conveyor is attached to the side of the road construction device, advantageously replacing the transverse guide, in order to transport road construction material on this side of the road construction device. Thereby, edge filling can also be performed further away from the road. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] The present invention will be described in detail below with reference to the accompanying drawings which show embodiments of the present invention, in which:
[0035] Figure 1 A road construction device according to the invention is shown in an axonometric projection, which is configured for use as a paving device for paving road construction material,
[0036] Figure 2 The road construction device according to the invention is shown in an orthogonal side view when used as a paving device,
[0037] Figure 3 The road construction device according to the invention is shown in an orthogonal rear view when used as a paving device,
[0038] Figure 4 The road construction device according to the invention is shown in an orthogonal top view when used as a paving device,
[0039] Figure 5 The road construction device according to the invention is shown in an orthogonal top view when used as a paving device, with the transverse guide extended to the end position,
[0040] Figure 6 The road construction device according to the invention is shown in an orthogonal front view when used as a paving device,
[0041] Figure 7The road construction device according to the invention is shown in an orthogonal front view when used as a paving device, with the transverse guide extended to the end position,
[0042] Figure 8 A road construction device according to the invention is shown in axonometric projection, which is configured for use as an edge filling device,
[0043] Fig. 9 The road construction device according to the invention when used as an edge filling device is shown in an orthogonal side view,
[0044] Fig.10 The road construction device according to the invention when used as an edge filling device is shown in an orthogonal front view,
[0045] Fig.11 The road construction device according to the invention when used as an edge filling device is shown in an orthogonal top view,
[0046] Fig.12 The road construction device according to the invention is shown in an orthogonal top view when used as an edge filling device, wherein the lateral displacement device performs a minimal lateral adjustment,
[0047] Fig.13 The road construction device according to the invention is shown in an orthogonal top view when used as an edge filling device, with the extension elements of the edge filling wings fully retracted into the frame elements,
[0048] Fig.14 The road construction device according to the invention when used as an edge filling device is shown in an orthogonal top view when the angle of the edge filling wings is in an end position,
[0049] Fig.15 The road construction device according to the invention when used as an edge filling device is shown in axonometric projection when the angle of the edge filling wing is in an end position,
[0050] Fig.16 The road construction device according to the invention is shown in an orthogonal front view when used as an edge filling device and equipped with an extension conveyor,
[0051] Fig.17 An attachment member for a road construction device according to the invention is shown,
[0052] Figures 18a to 18c The operation of the attachment member of the road construction device according to the invention is shown,
[0053] Fig.19 The operation of the road construction device according to the present invention as a paving device for paving road construction materials is shown.
[0054] Fig. 20 The road construction device according to the invention is shown in operation as an edge filling device equipped with edge filling wings,
[0055] Fig.21 The road construction device according to the invention is shown in operation as an edge filling device equipped with an extended conveyor,
[0056] Fig. 22 The operation of a road construction device according to the invention as an edge filling device is shown. DETAILED DESCRIPTION
[0057] Figures 1 to 7 A road construction device 10 according to the present invention is shown which is configured for use as a paving device. Figures 8 to 15 The same road construction device 10 is shown configured for use as an edge filling device. In both applications, the road construction device 10 comprises a front frame 12 and a rear frame 14 which are joined together and are configured to form a feed reservoir 15 for road construction material 110. A paving blade 18 is arranged on the rear frame 14, which can be kept in place in both applications. The road construction device 10 also has an adjustment actuator 22, by means of which the height between the front frame 12 and the rear frame 14 can be adjusted. The distance between the paving blade 18 and the surface of the road 120 can also be adjusted by means of the adjustment actuator 22. An attachment member 30 is attached to the rear frame 14 in an articulated manner, whereby the road construction device 10 can be attached to a working machine 100.
[0058] The front frame 12 advantageously comprises support wheels 50 attached to its undercarriage, by means of which the front frame 12 can travel along a base surface when used as a paving device, or along the surface of the finished road 120 when performing edge filling. In this context, a base surface is understood to be the ground on which the road construction layer is being paved.
[0059] The road construction device 10 is attached to the working machine 100 by means of an attachment member 30 which is attached in an articulated manner to the rear frame 14 of the road construction device 10. Advantageously, the attachment member 30 is adapted for use with a corresponding standard member of the working machine 100. Attachment members 30 according to a variety of different standards are used for the working machine 100, and the road construction device 10 according to the invention can be configured to be attached by means of an attachment member 30 according to any standard. For example, the attachment member 30 here uses a Volvo bracket.
[0060] When the road construction device 10 is used, it is first attached to a working machine 100, for example a bucket loader or a wheel loader, by means of the attachment member 30, replacing the bucket of the working machine 100. The road construction device 10 is pushed by the working machine 100 to contact the rear of a transport vehicle 105 carrying road construction materials 110. The front part of the road construction device 10 has here a bumper 42 with rotating rollers 43. In an operating situation, the bumper 42 of the road construction device 10 is pushed by the working machine 100 to contact the rear of the transport vehicle 105, so that the rollers 43 of the bumper 42 contact the transport vehicle 105 ( Fig.19 ). The driver of the transport vehicle 105 brakes gently so that the road construction device 10 always remains behind the transport vehicle 105 while the road construction material 110 is poured from the transport vehicle 105 into the feed reservoir 15 of the road construction device 10. The road construction device 10 may also comprise a hook member as an additional component (not shown in the figure). The road construction device 10 is attached to the rear ring of the transport vehicle 105 traveling in front at the bumper 42 by means of the hook member. Thus, the driver of the transport vehicle 105 does not have to apply the brakes in an operating situation, but the hook member ensures that the road construction device 10 and the transport vehicle 105 maintain a selected distance from each other.
[0061] When the transport vehicle 105 and the working machine 100 with the road construction device 10 start to move and the platform of the transport vehicle 105 is tilted, the paving of the road construction material 110 begins, whereby the road construction material 110 falls into the feed reservoir 15 of the road construction device 10. When the road construction device 10 is used as a paving device, the road construction material 110 flows from the feed reservoir 15 through the mouth 16 onto the base surface to form a road construction material layer, which is scraped by the paving blade 18 attached to the rear frame 14 to form a selected thickness. The working machine 100 travels on the paving material layer. When the road construction device 10 is used as an edge filling device, the conveyor 52 located at the bottom of the feed reservoir 15 transfers the road construction material 110 to one side of the road construction device 10, where the edge filling wing 54 attached to the rear frame 14 advantageously flattens the road construction material 110 into a layer with a selected thickness.
[0062] The rear frame 14 is attached to the front frame 12 by means of a beam 13, which extends in the longitudinal direction of the road construction device 10. Vertical guide rods 23 are formed at the ends of the beams 13 on the front frame 12 side, by means of which the rear frame 14 can be moved in the vertical direction relative to the front frame 12 by means of adjustment actuators 22. Advantageously, the adjustment actuators 22 are hydraulic cylinders connected to the vertical guide rods 23 and supported on the front frame 12. In other words, the rear frame 14 and the paving device 18 attached thereto are moved upward or downward relative to the base surface on which the front frame 12 is supported by the support wheels 50. Therefore, the rear frame 14 is temporarily attached in an articulated manner relative to the working machine 100 at the location of the articulated joint 39. The articulated joint 39 must be strong because it is subjected to high levels of stress during the paving operation. Advantageously, during the paving operation, the necessary adjustment of the thickness of the paved road construction material layer is performed only by means of the adjustment actuators 22 of the road construction device 10. The front frame 12 travels on a base surface, while the rear frame 14 and work machine 100 travel on a paved surface of a roadway 120 .
[0063] Figures 1 to 7The road construction device 10 is shown, which is configured to be used as a paving device for paving road construction material 110, so that the mouth 16 is formed at the bottom of the feed reservoir 15, and the feed reservoir 15 is used to feed the road construction material 110 under the rear frame 14. The mouth 16 retained between the front frame 12 and the rear frame 14 is an open orifice, through which the road construction material 110 flows out of the feed reservoir 15 onto the base surface of the road 120. The road construction material 110 flowing out of the feed reservoir 15 is leveled by means of a paving blade 18 engaged to the rear frame 14. The lateral guide 44 is attached to the side of the feed reservoir 15 between the front frame 12 and the rear frame 14 so as to limit the lateral paving of the road construction material 110 to a selected width. The transverse guide 44 is attached here to the rear frame 14 transversely to the paving blade 18 by means of a transverse displacement device 45, which comprises a horizontal sliding rod 46, by means of which the position of the transverse guide 44 can be adjusted in the transverse direction. The transverse displacement device 45 comprises a hydraulic cylinder 66, which moves the sliding rod 46 in the transverse direction relative to the rear frame 14. In this embodiment, the working width can be adjusted by about 50 cm on either side of the road construction device 10 by means of the transverse guide 44. Thus, when paving road construction material 110, the transverse guide 44 can be about 100 cm wider than the front frame 12 and the rear frame 12. The working width of the road construction device 10 used here as a paving device can be adjusted in the range of 3.3-4.3 m. The paving blade 18 is also below the sliding rod 46, so that the paving blade 18 is effectively stretched in a continuous manner over the entire distance between the transverse guides 44. However, the road construction device 10 according to the invention can also be scaled to other dimensions than those specifically disclosed herein.
[0064] When expectations Figures 1 to 7 The road construction device 10 shown in FIG. 1 is used as a paving device for paving road construction material 110 and is converted into Figures 8 to 15, the transverse guides 44 are removed from the road construction device 10. Alternatively, only one transverse guide 44 is removed from the side of the road construction device 10 where the edge filling is to take place, while the other transverse guide 44 is slightly moved outwards by means of the sliding rod 46, so that the entire conveyor 52 fits into the feed reservoir 15. Here, both ends of the conveyor 52 extend to selected positions outside the feed reservoir 15. The feed end of the conveyor 52, i.e. the end on the side of the edge filling wing 54, naturally extends outside the feed reservoir 15 here. The opposite end 521 of the conveyor 52 relative to the edge filling wing 54 also extends outside the feed reservoir 15 here. Taking into account the range of movement provided by the transverse displacement device 45, the conveyor 52 blocks the mouth 16 of the feed reservoir 15 in all its positions. By extending the opposite end 521 of the conveyor 52 relative to the edge filling wing 54 to the outside of the feed reservoir 15, the volume of the feed reservoir 15 can be increased so that the road construction material 110 can be fed to the edge filling wing 54 more quickly. To this end, the transverse guide 44 on the opposite end 521 of the conveyor 52 relative to the edge filling wing 54 must be completely removed or slightly moved outward from the feed reservoir 1 by the transverse shifting device 45 so that the entire conveyor 52 fits into the feed reservoir 15.
[0065] In this embodiment, first, a hopper 51 is arranged in the feed reservoir 15 of the road construction device 10, wherein a conveyor 52 is attached to the hopper 51. Both ends of the conveyor 52 extend to selected positions outside both the feed reservoir 15 and the hopper 51. The role of the hopper 51 is to better guide the road construction material poured into the feed reservoir 15 onto the conveyor 52. The conveyor 52 is installed at the bottom of the hopper 51 from one side of the hopper 51. Then, an edge filling wing 54 is arranged on the other side of the road construction device 10 instead of the lateral guide 44. Finally, necessary hydraulic hoses and measuring devices are connected to the edge filling wing 54.
[0066] The end user of the road construction device 10 can perform the conversion from a paving device to an edge filling device within one working day with the help of the instructions provided by the manufacturer of the road construction device 10. Therefore, considering the labor costs, it is obviously cheaper for the end user to purchase a single road construction device 10 according to the present invention that can adapt to two different operating stages than to purchase completely separate devices for each operating stage.
[0067] When the road construction device 10 is used as an edge filling device, its paving blade 18 can also be left in place. Although the paving blade 18 is not required for edge filling and therefore conventional edge filling devices do not include a paving blade 18 located under the rear frame 14, with the road construction device 10 according to the present invention, the paving blade 18 can be left in place. Therefore, the working time required for conversion is very short because the paving blade 18 does not need to be removed or attached in a separate operation.
[0068] In this embodiment, the conveyor 52 is a hydraulic conveyor belt. In another embodiment, the conveyor 52 is a vibrating conveyor.
[0069] A guide element 53 is also provided at the end of the conveyor 52 on the side of the hopper 51. The guide element 53 has an opening through which the road construction material 110 for edge filling is guided out of the conveyor 52. The function of the guide element 53 is to effectively guide the road construction material 110 from the feed reservoir 15 and the hopper 51 to the edge filling wing 54 and prevent the road construction material 110 from ending up under the rear frame 14 during edge filling. For example, if edge filling is performed at the edge of an asphalt-paved road 120, it is undesirable that the road construction material 110 ends up on the asphalt-paved surface.
[0070] The opening of the guide element 53 and the load capacity of the conveyor 52 are sized so that the main particle size of the road construction material 110 used for the edge filling is 0-70 mm, although a maximum particle size of up to 150 mm can be used.
[0071] The edge filling wings 54, the conveyor 52 and the guide elements 53 are arranged on the rear frame 14 by means of the same transverse displacement device 45 to which the transverse guide 44 is attached when the road construction device 10 is used as a paving device. Thus, the edge filling wings 54, the conveyor 52 and the guide elements 53 can be moved as a whole to one side of the rear frame 14 by means of the transverse displacement device 45.
[0072] In addition to the edge filling wings 54, the conveyor 52 and the guide elements 53, the hopper 51 is also attached to the rear frame 14 so that when the support wheels 50 arranged on the front frame 12 remain on the surface of the road 120, the entire height of the rear frame 14 relative to the front frame 12 can be adjusted by the adjustment actuator 22, thereby adjusting its height relative to the surface of the road 120.
[0073] In one embodiment, a second support wheel may also be attached to the rear frame 14. This makes the road construction device 10 more stable when used as an edge filling device and ensures that the paving blade 18 attached to the rear frame 14 does not accidentally hit the road surface.
[0074] In this embodiment, the edge filling wing 54 is arranged on the lateral displacement device 45 by means of a vertical sliding rod 55, on which a hydraulic cylinder 65 is arranged for moving the edge filling wing 54 in the vertical direction. The vertical sliding rod 55 is attached to the horizontal sliding rod 46 in an articulated manner so as to be adjustable by means of the hydraulic cylinder 64. The hydraulic cylinder 64 can adjust the inclination of the edge filling wing 54 relative to the horizontal plane.
[0075] The edge filling wing 54 here consists of three parts, which include a frame element 541, an extension element 542 and an end element 543. The frame element 541 is attached to the vertical sliding rod 55 in an articulated manner so as to be adjustable by means of a hydraulic cylinder 61. By means of the hydraulic cylinder 61, the angle α of the edge filling wing 54 can be adjusted within a movement range of 90 degrees. The frame element 541 and the extension element 542 are configured to be movable relative to each other by means of the hydraulic cylinder 62. In other words, the frame element 541 and the extension element 542 form a telescopic structure. The end element 543 is attached to the extension element 542 in an articulated manner so as to be adjustable by means of the hydraulic cylinder 63 in such a way that the angle β of the end element 543 relative to the frame element 541 and the extension element 542 can be adjusted.
[0076] By means of the telescopic structure and the hydraulic cylinder 62, the length of the edge filling wing 54 can be adjusted within a range of 1.7-2.5 m. In addition, the lateral displacement device 45 allows the edge filling wing 54 to be moved about 50 cm in the lateral direction. The effective length of the edge filling wing 54 can also be adjusted by changing the angle α of the edge filling wing 54 by means of the hydraulic cylinder 61. The edge filling wing 54 can also be scaled to other sizes.
[0077] In this embodiment, the road construction device 10 comprises measuring means (not shown in the figures) for determining at least the height, width and inclination of the edge filling wings 54. More specifically, the measuring means comprises sensors, by means of which the status of the hydraulic cylinders 65, 62 and 64 is determined. The measuring data are transmitted to an operator of the road construction device, who may be the driver of the working machine 100 or a separate individual. The measuring data allow the operator to easily control the position of the edge filling wings 54. Advantageously, the road construction device 10 comprises a control panel arranged in the cab of the working machine 100. The measuring data from the measuring means are transmitted to the control panel, which can be used to control the hydraulic cylinders of the road construction device 10. The road construction device 10 may also comprise sensors for detecting the surface profile of the road 120, so that the position of the edge filling wings 54 can be automatically adjusted using software means. Thus, the driver does not have to make adjustments during the edge filling operation, but the software means ensure that the edge filling wings 54 are always in the optimal position despite changes in the profile of the surface or edge of the road 120.
[0078] Typically, in countries with right-hand traffic, in order to produce an edge filling device, the transverse guide 44 is removed on the right side in the direction of travel of the road construction device 10. As a result, the front frame 12 of the road construction device 10 is located in front of the rear frame 14 in the direction of travel. As a result, the edge filling operation takes place on the right side in the direction of travel of the road construction device 10. However, the road construction device 10 according to the invention can easily be adapted for edge filling operations in such a way that the road construction material 110 to be spread can also be guided to the left side in the direction of travel of the road construction device 10. This is possible because the front frame 12 and the rear frame 14 are substantially symmetrical in the transverse direction, whereby the frame of the road construction device 10 according to the invention can equally withstand the loads generated by the edge filling wings 54, whether the edge filling wings 54 are on the right or on the left.
[0079] Since road construction device 10 is attached to the front of work machine 100 and is advantageously designed to be pushed, work machine 100 may be any work machine 100 suitable for tasks that include lifting or pushing the device. Another advantage of being designed to be pushed is that transport vehicle 105 does not have to drive over the pavement of material.
[0080] The road construction device 10 described above has a total mass of about 5 tons when used as an edge filling device. Therefore, the mass of the work machine 100 to which the road construction device 10 is attached should advantageously be at least 10 tons, most advantageously at least 12 tons. It is also possible to push the road construction device 10 with a lighter work machine, but not necessarily to lift it.
[0081] Fig.16 The road construction device 10 according to the invention when used as an edge filling device is shown in the case where the road construction device 10 is equipped with an extension conveyor 80 instead of the edge filling wing 54. In this embodiment, the road construction device 10 comprises, for example, both the first support wheel 50 and the second support wheel 60, which therefore do not necessarily form part of the present invention. The extension conveyor 80 can be mechanically attached to the road construction device 10 in a similar manner to the edge filling wing 54. The structure of the extension conveyor 80 can be similar to the conveyor 52 arranged at the bottom of the feed reservoir 15. The extension conveyor 80 is here a hydraulic conveyor belt. The extension conveyor 80 allows the road construction material 110 to be fed further away from the feed reservoir 15 and thus further away from the road 120. Therefore, it is advantageous that the road construction device 10 comprises means for adjusting the position of the extension conveyor 80, so that the height and angle of the extension conveyor 80 can be advantageously adjusted to obtain the desired position of the feed end of the extension conveyor 80 relative to the road 120. Extending conveyor 80 enables edge filling to be performed using road construction device 10 relatively far from the road, for example, on the other side of trench 130 that is close to the road. Fig.21 ). For example, wind turbines are built in remote areas, so it is often necessary to lay cables from the wind turbines over very long distances in order to transmit the electricity generated there. Currently, the trenches dug for the cables at the edge of the road 120 are filled with the help of an excavator after the cables have been laid, which is a very slow process. With the help of a road construction device 10 equipped with an extension conveyor 80, this operation can be carried out faster than before.
[0082] Fig.17 The operation of an attachment member 30, here a Volvo bracket, of a road construction device 10 according to the invention and thus of an articulated joint 39 is shown. The attachment member 30 has a hook element 31 by means of which it is attached to a working machine 100. The attachment member 30 has an elongated hole 32 in which a round pin 33 attached to the rear frame 14 of the road construction device 10 is arranged. Thus, the elongated hole 32 or other longitudinal groove allows the pin 33 attached to the rear frame 14 to move a selected distance in the vertical direction. Thus, the road construction device 10 can be lowered onto the road 120, advantageously supported on the support wheels 50, so that the road construction device 10 is only pushed by the working machine 100. Thus, the loads acting on the working machine 100 are much lower than if the attachment member 30 did not have this vertical degree of freedom. Two attachment members 30 may be used so that road construction device 10 can also tilt according to the surface contour of road 120, pin 33 floating in elongated hole 32 of attachment member 30 so that this tilting is not transmitted to work machine 100 and does not apply load to work machine 100. Figures 18a to 18c The tilting of the road construction device 10 relative to the attachment member 30 due to the elongated holes 32 is shown.
[0083] Figures 19 to 22 The use of a road working device 10 according to the invention is shown under different operating conditions.
[0084] Fig.19 The road construction device 10 is shown in its application as a spreading device for spreading road construction material 110. In this case, the road construction material 110 is poured from a transport vehicle 105 into a feed reservoir 15 of the road construction device 10, and the road construction material 110 is spread on the surface of a road 120 beneath the working machine 100 and leveled by a spreading blade 18 into a uniform layer.
[0085] Fig. 20The application of the road construction device 10 as an edge filling device equipped with edge filling wings 54 is shown. In this case, road construction material 110 is poured from a transport vehicle 105 into a feed reservoir 15 of the road construction device 10, and the conveyor 52 transports the road construction material 110 to the side of the road construction device 10, where the edge filling wings 54 level the spread road construction material 110 at the side of the road construction device 10 and the road 120 into a uniform layer.
[0086] Fig.21 The application of the road construction device 10 as an edge filling device equipped with an extension conveyor 80 is shown. In this embodiment, the road construction device 10 comprises, for example, both a first support wheel 50 and a second support wheel 60, which therefore do not necessarily form part of the present invention. In this case, road construction material 110 is poured from a transport vehicle 105 into a feed reservoir 15 of the road construction device 10, and the conveyor 52 conveys the road construction material 110 to the side of the road construction device 10, from which side another conveyor 80 moves the road construction material 110 on one side of the road construction device 10 even further away from the road 120, for example over a ditch 130, so that, for example, a ditch on the other side of the ditch 130 can be filled.
[0087] Fig. 22 The application of the road construction device 10 as an edge filling device without an edge filling wing or an extension conveyor is shown. In this case, the road construction material is poured from a transport vehicle into the feed reservoir 15 of the road construction device 10, and the conveyor 52 transports the road construction material 110 to the side of the road construction device 10. Thus, when the road construction device 10 is converted from a paving device for paving road construction material 110 to a filling function, the edge of the road 120 can be filled in a very simple manner and only very minor modifications to the road construction device 10 are required.
Claims
1. A road construction device (10) configured to be used as a paving device for paving road construction material (110) and configured to be attached to a work machine (100), wherein: The road construction device (10) comprises: - a front frame (12) and a rear frame (14), joined together and configured to form a feed reservoir (15) for said road construction material (110), a mouth (16) formed in the feed reservoir (15), from which the road construction material (110) is fed below the rear frame (14), a paving blade (18) arranged on said rear frame (14) for confining said road construction material (110) exiting from said mouth (16) to form a layer on the surface of a road (120), - transverse guides (44) attached between the front frame (12) and the rear frame (14) on either side of the feed reservoir (15) to limit the transverse spreading of the road construction material (110) to a selected width, - an adjustment actuator (22) for adjusting the distance between the paving blade (18) and the surface of the road (120), and - an attachment member (30) attached to the rear frame (14) for attaching the road construction device (10) to a working machine (100), It is characterized in that The road construction device (10) is configured to be used alternatively as an edge filling device instead of for paving road construction material (110), and the road construction device (10) further comprises an edge filling device, the edge filling device being configured to be supported on the road construction device (10) in place of the transverse guide (44), wherein the edge filling device comprises: a conveyor (52) for conveying road construction material (110) from the feed reservoir (15) to one side of the road construction device (10), wherein the conveyor (52) is configured to be detachably arranged at the bottom of the feed reservoir (15) to advantageously block the mouth (16).
2. The road construction device (10) according to claim 1, characterized in that: When the road construction device (10) is used as an edge filling device, a hopper (51) is arranged in the feed reservoir (15), wherein the conveyor (52) is attached to the bottom of the hopper (51).
3. The road construction device (10) according to claim 1 or 2, characterized in that: On one side of the road construction device (10), there is always a transverse guide (44) between the front frame (12) and the rear frame (14).
4. The road construction device (10) according to any one of claims 1 to 3, characterized in that: The conveyor (52) is a conveyor belt or a vibrating conveyor.
5. The road construction device (10) according to any one of claims 1 to 4, characterized in that: The front frame (12) and the rear frame (14) are substantially symmetrical in the transverse direction.
6. The road construction device (10) according to any one of claims 1 to 5, characterized in that: The road construction device (10) comprises support wheels (50) attached to the front frame (12).
7. The road construction device (10) according to any one of claims 1 to 6, characterized in that: The road construction device (10) comprises a second support wheel (60) attached to the rear frame (14).
8. The road construction device (10) according to any one of claims 1 to 7, characterized in that: Both ends of the conveyor (52) extend to selected locations outside the feed reservoir (15).
9. The road construction device (10) according to any one of claims 1 to 8, characterized in that: The road construction device (10) comprises a bumper (42) arranged on the front frame (12).
10. The road construction device (10) according to any one of claims 1 to 9, characterized in that: The road construction device (10) comprises a hooking member arranged on the bumper (42).
11. The road construction device (10) according to any one of claims 1 to 10, characterized in that: The edge filling device further comprises edge filling wings (54) for leveling the road construction material (110) at the side of the road construction device (10), wherein the edge filling wings (54) can be arranged at the side of the feed reservoir (15), advantageously replacing the transverse guide (44).
12. The road construction device (10) according to claim 11, characterized in that: When the road construction device (10) is used as a paving device, the lateral guide (44) is attached to the front frame (12) or the rear frame (14) by means of a lateral shifting device (45), and when the road construction device (10) is used as an edge filling device, the conveyor (52) and the edge filling wing (54) are attached to the front frame (12) or the rear frame (14) by means of the lateral shifting device (45), and the lateral shifting device (45) includes a sliding rod (46) and a hydraulic cylinder (66) configured to move the sliding rod (46) in a lateral direction.
13. The road construction device (10) according to claim 12, characterized in that: The edge filling wing (54) is arranged on the lateral displacement device (45) by means of a vertical sliding rod (55), and a hydraulic cylinder (65) configured to move the edge filling wing (54) in the vertical direction is arranged on the vertical sliding rod (55), wherein the vertical sliding rod (55) is attached to the lateral displacement device (45) in an articulated manner so as to be adjustable by means of the hydraulic cylinder (64).
14. The road construction device (10) according to claim 13, characterized in that: The edge filling wing (54) includes a frame element (541), an extension element (542) and an end element (543), wherein the frame element (541) is attached to the vertical sliding rod (55) in an articulated manner so as to be adjustable by means of a hydraulic cylinder (61), the frame element (541) and the extension element (542) are configured to move relative to each other by means of a hydraulic cylinder (62), and the end element (543) is attached to the extension element (542) in an articulated manner so as to be adjustable by means of a hydraulic cylinder (63).
15. The road construction device (10) according to any one of claims 1 to 14, characterized in that The length of the edge filling wing (54) can be adjusted within the range of 1.5 to 3.0 m, advantageously within the range of 1.7 to 2.5 m.
16. The road construction device (10) according to any one of claims 11 to 15, characterized in that The road construction device (10) comprises measuring means for determining at least the height, width and inclination of the edge filling wing (54).
17. The road construction device (10) according to any one of claims 1 to 10, characterized in that The edge filling device also includes an extension conveyor (80) for conveying road construction material (110) to the side of the road construction device (10), wherein the extension conveyor (80) can be arranged to the side of the feed reservoir (15), advantageously replacing the transverse guide (44).
18. The road construction device (10) according to claim 17, characterized in that: The extension conveyor (80) is configured as an extension of the conveyor (52) such that the road construction material (110) is configured to fall from the conveyor (52) onto the extension conveyor (80).
19. A method for modifying a road construction device (10), wherein a paving device for paving road construction material (110) is modified, wherein: The paving device for paving construction materials (110) comprises: - a front frame (12) and a rear frame (14), joined together and configured to form a feed reservoir (15) for said road construction material (110), a mouth (16) formed in the feed reservoir (15), from which the road construction material (110) is fed below the rear frame (14), a paving blade (18) arranged on said rear frame (14) for confining said road construction material (110) exiting from said mouth (16) to form a layer on the surface of a road (120), - transverse guides (44) attached between the front frame (12) and the rear frame (14) at the sides of the feed reservoir (15) for limiting the transverse spreading of the road construction material (110) to a selected width, - an adjustment actuator (22) for adjusting the distance between the paving blade (18) and the surface of the road (120), and - an attachment member (30) attached to the rear frame (14) for attaching the road construction device (10) to a working machine (100), It is characterized in that A paving device for paving road construction material (110) is adapted for use as an edge filling device by performing the following steps: - removing at least one transverse guide (44), and - a conveyor (52) is installed in the feed reservoir (15), the conveyor (52) transporting the road construction material (110) fed into the feed reservoir (15) to one side of the road construction device (10), the conveyor (52) being advantageously installed in the feed reservoir (15) in such a way that the conveyor (52) blocks the mouth (16).
20. The method according to claim 19, characterized in that When the road construction device (10) is used as an edge filling device, a hopper (51) is also installed in the feed reservoir (15) and the conveyor (52) is attached to the hopper (51).
21. The method according to claim 19 or 20, characterized in that When the road construction device (10) is used as an edge filling device, the road construction device (10) is further equipped with an edge filling wing (54), wherein the edge filling wing (54) is attached to the side of the road construction device (10) to level the road construction material (110) on the side of the road construction device (10), and advantageously, the edge filling wing (54) is attached to the side of the road construction device (10) instead of the transverse guide (44) to level the road construction material (110) on the side of the road construction device (10).
22. The method according to claim 19 or 20, characterized in that When the road construction device (10) is used as an edge filling device, the road construction device (10) is also equipped with an extension conveyor (80), wherein the extension conveyor (80) is attached to the side of the road construction device (10) to transport road construction materials (110) on the side of the road construction device (10). Advantageously, the extension conveyor (80) is attached to the side of the road construction device (10) instead of the transverse guide (44) to transport road construction materials (110) on the side of the road construction device (10).