CN104499406B - Hot air layered heating remixing locomotive - Google Patents

Abstract

The invention belongs to the technical field of highway engineering machinery, in particular to a hot air layered heating remixing locomotive, which comprises a frame supported by a bearing wheel, wherein the front end of the frame is provided with a new material receiving hopper, the frame is provided with a scraper lifting device and a stirring cylinder, the upper end of the scraper lifting device is provided with a weighing and metering hopper, and a feeding hole of the stirring cylinder is positioned below the weighing and metering hopper; the hot material vertical lifting device and the heated air circulation heating device are arranged in the middle of the rack, a discharge port is formed in the upper portion of the vertical lifting device, the conveying plate chain is arranged on the lower portion of the heated air circulation heating device, and the discharge port is arranged towards one side of the feeding end on the surface of the conveying plate chain. The hot air layered heating remixing locomotive can fully and uniformly heat the new and old asphalt mixtures, namely layered and uniformly distribute the materials, and finally fully and uniformly stir the materials to obtain the new mixture with stable temperature, thereby ensuring the stable quality of the new pavement.

Description

Hot air layered heating compound locomotive

technical field

The invention belongs to the technical field of road engineering machinery, and in particular relates to a hot air layered heating remixing locomotive.

Background technique

After long-term use of asphalt pavement, there will be defects such as ruts and depressions, which will accelerate the damage of the pavement and affect driving safety. The hot-in-place regeneration process of asphalt pavement can be summarized as follows: first, the defective asphalt pavement is heated by a preheating locomotive, and after the asphalt is heated and melted, the road surface reaches a certain temperature and softened, and then milled by a milling locomotive. The softened pavement makes the asphalt pavement change from the original compacted state to the loose piled material state under the small milling force. Because the old asphalt mixture produced by milling has not changed its gradation, it is still possible to reheat the mixed asphalt mixture while adding new materials and other additives. Paver and other equipment pave and flatten to form a qualified new road surface.

In practice, the quality of pavement repaired by this method is unstable and cannot meet the acceptance requirements. The main reason is that: after the road surface is heated to a certain temperature by several preheating locomotives, the old asphalt mixture is milled by the following milling locomotives and formed into a loose accumulation. Since new asphalt mixture needs to be added during the remixing stage, the new asphalt mixture needs to be sandwiched between the milling locomotive and the remixing locomotive by a self-unloading asphalt truck, which will carry and unload the new asphalt mixture to the hopper of the remixing locomotive In this way, the milling locomotive and the remixing locomotive are separated by a certain distance, so that the old asphalt mixture and the road surface after milling are exposed to the air and cannot be heated. Therefore, a heating device is added before the mixing of the remixing locomotive, and a material distributing screw spreading device is installed before the heating device to obtain a larger heating area for the asphalt mixture. In this way, the temperature of the old asphalt mixture is increased to a certain extent, but if it is constructed in a windy and windy area, the convection of heat energy will be greatly enhanced due to the temperature difference, and the material will further lose a large amount of heat energy. This makes the heating device need to provide most of the heating power, and lengthen the heating device, resulting in extremely poor maneuverability of the remixing locomotive, which in turn affects the construction efficiency and quality. To put it simply, the old and new asphalt mixture cannot reach a good temperature before mixing, and temperature segregation occurs, and the temperature is not uniform enough, which ultimately affects the quality of the newly paved road surface. How to make the old asphalt mixture after milling fully heated while adding new asphalt mixture in the remixing stage, so as to re-stir a stable asphalt mixture that meets the quality requirements is an important issue.

Contents of the invention

In view of the above problems, the present invention provides a hot air layered heating remix locomotive, which can make the old and new asphalt mixtures be heated more fully and uniformly, and ensure the stable quality of the new road surface.

According to the technical solution of the present invention: a hot air layered heating remix locomotive, characterized in that: it includes a frame supported by bearing wheels, a new material receiving hopper is arranged at the front end of the frame, and a scraper is provided on the frame to lift device, mixing cylinder, the upper end of the scraper lifting device is provided with a weighing hopper, and the feeding port of the mixing cylinder is located below the weighing and measuring hopper; the middle part of the frame is provided with a vertical lifting device for hot material and a hot air circulation heating device, The upper part of the vertical lifting device has a discharge port, and the lower part of the hot air circulation heating device is provided with a conveying plate chain, and the discharge port is set towards the feeding end side of the surface of the conveying plate chain.

As a further improvement of the present invention, the hot material vertical lifting device includes a casing, a screw feeding device is installed at the lower end of the casing, a scraper chain drive motor is installed on the side wall of the upper part of the casing, and a scraper is installed on the upper part of the inner cavity of the casing to rotate The sprocket shaft, the output end of the scraper chain drive motor is axially connected with the scraper sprocket through a coupling, the upper side wall of the casing is also provided with a tensioner, and the lower part of the casing inner cavity is rotated with a driven sprocket shaft, and the transmission transmission The plate chain tensioning is set on the scraper sprocket shaft, the driven sprocket shaft and the adjustment shaft of the tensioner. The conveyor drive plate chain is evenly arranged with scraper brackets, and the scraper brackets are fixed with scrapers; The upper part of the casing is provided with a discharge port.

As a further improvement of the present invention, the screw feeding device includes a driving motor installed on the side wall of the lower part of the casing, the output end of the driving motor is fixedly connected to the first gear, and a conveying shaft is installed in the lower part of the casing to rotate, and the shaft end of the conveying shaft The second gear is fixedly arranged, the first gear and the second gear mesh with each other, spiral blades are respectively arranged on the shaft diameters at both ends of the conveying shaft, and driving blades are arranged in the middle of the conveying shaft.

As a further improvement of the present invention, the shell corresponding to the lower position of the discharge port on the casing is arc-shaped, and a wear-resistant plate is arranged on the inner wall of the arc-shaped shell, and the wear-resistant plate faces Extending down to the bottom surface of the inner cavity of the casing; the tensioner includes a mounting seat, on which a bar-shaped groove is opened in the vertical direction, the adjusting shaft seat is arranged on the bar-shaped groove, and the adjusting bolt is threadedly connected to the mounting seat , the upper end of the adjusting bolt is fixedly connected with the adjusting shaft seat.

As a further improvement of the present invention, the hot air circulation heating device includes a hot air box arranged on the frame, and the hot air box is fixedly provided with a combustion chamber, a circulation fan, an air outlet of the circulation fan and an air inlet of the combustion chamber They are connected by pipelines, and a conveying plate chain is arranged in the hot blast box, and a circulation upper air channel is formed between the upper surface of the conveying plate chain and the bottom surface of the hot air box body, and the air outlet at the lower end of the combustion chamber is connected to the circulating upper air channel; the lower surface of the conveying plate chain A circulating wind downflow channel is formed between the asphalt mixture and the ground layer.

As a further improvement of the present invention, a diesel burner is fixedly arranged on the side of the combustion chamber close to the circulating fan, and a plate chain fixing seat is arranged at the lower part of the frame, and rotating rollers are respectively installed at both ends of the plate chain fixing seat, and the conveying plate The chain is tensioned and arranged on the rotating roller; the plate chain fixing seat is provided with an air vent, and the air vent communicates with the circulation upper air duct and the circulation lower air duct.

As a further improvement of the present invention, the lower end of the scraper lifting device is rotated to set a collection spiral roller, and there are two collection spiral rollers, and the two collection spiral rollers are respectively arranged on both sides of the bottom of the scraper lifting device. The spiral directions of the roller sheets arranged on the surface of the root collecting spiral roller are opposite.

As a further improvement of the present invention, a hydraulic power mechanism is further provided on the frame, and the hydraulic power mechanism includes at least a diesel engine, a hydraulic pump, and a hydraulic oil tank.

As a further improvement of the present invention, a fuel tank is also provided on the frame, the fuel tank is connected to the diesel burner through an oil pipe, and the hydraulic oil tank is connected to the hydraulic pump through an oil pipe.

The technical effect of the present invention is that: the hot air layered heating remix locomotive of the present invention can make the new and old asphalt mixture be heated more fully and uniformly, that is, layered and uniformly distributed, and finally make the mixing temperature more sufficient and uniform, and obtain stable temperature The new mixture ensures the stable quality of the new pavement.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a structural view of the collecting screw roller in the present invention.

Fig. 3 is a structural view of the material distributing screw device in the present invention.

Fig. 4 is a structural view of the hot air circulation heating device in the present invention.

Fig. 5 is a structural view of the vertical lifting device for hot material in the present invention.

Fig. 6 is a left side view of Fig. 5 .

detailed description

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

In Figures 1 to 6, it includes new material receiving hopper 1, diesel engine 2, hydraulic power mechanism 3, hot material vertical lifting device 4, casing 4.1, tensioner 4.2, mounting seat 4.21, bar groove 4.22, and adjustment shaft seat 4.23, adjusting bolt 4.24, conveying drive plate chain 4.3, scraper 4.4, scraper bracket 4.5, screw feeding device 4.6, driving motor 4.61, conveying shaft 4.62, spiral blade 4.63, driving blade 4.64, first gear 4.65, second Second gear 4.66, scraper chain drive motor 4.7, grinding plate 4.9, discharge port 4.10, frame 5, hot air circulation heating device 6, diesel burner 6.1, combustion chamber 6.2, conveyor plate chain 6.6, circulation upper air duct 6.7, circulation Downwind air duct 6.8, circulating fan 6.10, air vent 6.11, vehicle frame installation platform 6.9, fuel tank 7, aggregate screw roller 8, scraper lifting device 9, load wheel 10, weighing bucket 11, mixing cylinder 12, etc.

As shown in Figures 1 to 6, the present invention is a hot air layered heating remix locomotive, comprising a frame 5 supported by load wheels 10, a new material receiving hopper 1 is arranged at the front end of the frame 5, and the frame 5 A scraper lifting device 9 and a mixing cylinder 12 are provided, and a stirring shaft is arranged to rotate in the mixing cylinder 12. During work, the stirring operation is carried out through the stirring blades on the stirring shaft. The upper end of the scraper lifting device 9 is provided with a weighing meter Bucket 11, the asphalt mixture lifted by the scraper lifting device 9 is lifted to the weighing hopper 11, the asphalt mixture is weighed by the weighing hopper 11, and the qualified asphalt mixture is poured into the mixing bucket In the tank 12, the feed inlet of the mixing tank 12 is located below the weighing hopper 11; the middle part of the frame 5 is provided with a vertical lifting device 4 for hot material and a hot air circulation heating device 6, and the upper part of the vertical lifting device 4 has a discharge Port 4.10, the lower part of the hot air circulation heating device 6 is provided with a conveying plate chain 6.6, and the discharge port 4.10 is set towards the feeding end side of the surface of the conveying plate chain 6.6.

The hot material vertical lifting device 4 includes a casing 4.1, the lower end of the casing 4.1 is provided with a spiral feeding device 4.6, the upper side wall of the casing 4.1 is provided with a scraper chain drive motor 4.7, and the upper part of the inner cavity of the casing 4.1 is rotated to be provided with a scraper The sprocket shaft, the output end of the scraper chain driving motor 4.7 is axially connected with the scraper sprocket through a coupling, the upper side wall of the casing 4.1 is also provided with a tensioner 4.2, and the lower part of the inner cavity of the casing 4.1 is provided with a driven chain The wheel shaft, the conveying drive plate chain 4.3 is tensioned and set on the scraper sprocket shaft, the driven sprocket shaft and the adjustment shaft of the tensioner 4.2, and the conveying drive plate chain 4.3 is evenly arranged with scraper brackets 4.5, and the scraper The scraper 4.4 is fixed on the bracket 4.5; the upper part of the casing 4.1 is provided with a discharge port 4.10.

The screw feeding device 4.6 includes a driving motor 4.61 installed on the side wall of the lower part of the casing 4.1, the output end of the driving motor 4.61 is fixedly connected to the first gear 4.65, and the lower casing of the casing 4.1 is rotated to set the delivery shaft 4.62, the delivery shaft 4.62 shaft The second gear 4.66 is fixed at the end, the first gear 4.65 and the second gear 4.66 mesh with each other, the shaft diameters at both ends of the conveying shaft 4.62 are respectively provided with helical blades 4.63, and the middle part of the conveying shaft 4.62 is provided with driving blades 4.64.

On the casing 4.1, the casing corresponding to the lower part of the discharge port 4.10 is arc-shaped, and a wear-resistant plate 4.9 is arranged on the inner wall of the arc-shaped casing, and the wear-resistant plate 4.9 extends downward to The bottom surface of the inner cavity of the casing 4.1; the tensioner 4.2 includes a mounting base 4.21, the mounting base 4.21 is provided with a bar-shaped groove 4.22 along the vertical direction, the adjusting shaft seat 4.23 is arranged on the bar-shaped groove 4.22, and the thread of the adjusting bolt 4.24 Connected on the mounting seat 4.21, the upper end of the adjusting bolt 4.24 is fixedly connected with the adjusting shaft seat 4.23.

The hot air circulation heating device 6 includes a vehicle frame installation platform 6.9 arranged on the frame 5, a combustion chamber 6.2, a circulation fan 6.10 are fixedly arranged on the vehicle frame installation platform 6.9, and the air outlet of the circulation fan 6.10 and the combustion chamber 6.2 The air inlets of the air inlets are connected by pipes, and the conveyor plate chain 6.6 is arranged on the frame 5 corresponding to the bottom of the vehicle frame installation platform 6.9, and a circulating upper air duct is formed between the upper surface of the conveyor plate chain 6.6 and the bottom surface of the vehicle frame installation platform 6.9 6.7, the air outlet at the lower end of the combustion chamber 6.2 is connected to the circulation upper air duct 6.7; the lower surface of the conveying plate chain 6.6 and the asphalt mixture on the ground layer form a circulation air lower air duct 6.8.

A diesel burner 6.1 is fixed on the side of the combustion chamber 6.2 close to the circulating fan 6.10, and the lower part of the frame 5 is provided with a plate chain fixing seat, and the two ends of the plate chain fixing seat are respectively rotated to set rotating rollers to convey 6.6 pieces of plate chains. It is tightly arranged on the rotating roller; the plate chain fixing seat is provided with a vent 6.11, and the vent 6.11 is connected to the circulation upper air duct 6.7 and the circulation lower air duct 6.8.

The lower end of the scraper lifting device 9 is rotated to set a collection spiral roller 8. There are two collection spiral rollers 8, and the two collection spiral rollers 8 are arranged on both sides of the bottom of the scraper lifting device 9 respectively. The spiral direction of the roller sheet that material spiral roller 8 surface is provided with is opposite.

The frame 5 is also provided with a hydraulic power mechanism 3, and the hydraulic power mechanism 3 at least includes a diesel engine 2, a hydraulic pump 3.1, and a hydraulic oil tank 3.2.

The frame 5 is also provided with a fuel tank 7, the fuel tank 7 is connected with the diesel burner 6.1 through an oil pipe, and the hydraulic oil tank 3.2 is connected with the hydraulic pump 3.1 through an oil pipe.

As shown in Figure 1, the working process of the present invention is as follows: the new material receiving hopper 1 of the remix locomotive accepts the new asphalt mixture A that has been stirred from the self-unloading engineering vehicle, and the new asphalt mixture A is designed according to the grade The ratio is evenly put into the material channel of the recycled material B on the ground, and the mixed material A and B are divided into two layers and evenly distributed by the hot material vertical lifting device 4 and the screw feeding device 4.6 of the remixer (a part The mixed material is lifted to the conveying plate chain 6.6 through the hot material vertical lifting device 4, and a part of the mixed material is left on the ground), and heated under the action of the hot air circulation heating device 6, that is, the recycled material B and the new asphalt mixture A on the ground are spread equally After layering and heating, the heated area of the recycled material divided into two layers is enlarged, the material layer is thinned, the heating is uniform, the temperature rises quickly and it is not easy to age. The heated regenerated material is collected by the aggregate screw roller 8, and then transported to the weighing bucket 11 through the inclined scraper lifting device 9, then enters the mixing tank 12 to fully mix and mix, and is discharged into the asphalt paver for paving, and finally Rolled by road rollers to the specified requirements.

The hot air layered heating remix locomotive can make the new and old asphalt mixture more fully and uniformly heated, that is, layered and evenly distributed, and finally make the mixing temperature more sufficient and uniform, and obtain a new mixture with stable temperature to ensure the stability of the new road surface the quality of.

Claims (9)

1. a hot blast leveled heating remixing locomotive, it is characterized in that: include the frame (5) supported by bearing wheels (10), described frame (5) front end is provided with virgin material hopper (1), frame (5) is provided with scraper plate lifting device (9), a mixing bowl (12), described scraper plate lifting device (9) upper end is provided with poidometer batch box (11), and the charging aperture of a mixing bowl (12) is positioned at the lower position of poidometer batch box (11)；Frame (5) middle part is provided with heat material perpendicular lifting apparatus (4), heat wind circulation heating equipment (6), described perpendicular lifting apparatus (4) top has discharging opening (4.10), heat wind circulation heating equipment (6) bottom is provided with conveying plate chain (6.6), and described discharging opening (4.10) is arranged towards feed end side, conveying plate chain (6.6) surface.

null2. according to the hot blast leveled heating remixing locomotive described in claim 1，It is characterized in that: described heat material perpendicular lifting apparatus (4) includes casing (4.1)，Described casing (4.1) lower end arranges spiral and returns material device (4.6)，Casing (4.1) upper portion side wall arranges scraper chain and drives motor (4.7)，Casing (4.1) inner chamber top rotates and arranges scraper chain wheel shaft，Scraper chain drives the outfan of motor (4.7) to pass through shaft coupling with scraper chain wheel shaft to being connected，Casing (4.1) upper portion side wall is additionally provided with stretcher (4.2)，Casing (4.1) inner chamber lower rotational is provided with driven chain wheel shaft，Conveyance plate chain (4.3) tensioning is arranged at scraper chain wheel shaft、On the regulation axle of driven chain wheel shaft and stretcher (4.2)，Upper uniform being provided with of described conveyance plate chain (4.3) scrapes board bracket (4.5)，Scrape and on board bracket (4.5), be fixed with scraper plate (4.4)；Described casing (4.1) top is provided with discharging opening (4.10).

3. according to the hot blast leveled heating remixing locomotive described in claim 2, it is characterized in that: described spiral returns material device (4.6) to include being installed on the driving motor (4.61) of casing (4.1) lower sides, drive the outfan fixing connection the first gear (4.65) of motor (4.61), rotate in casing (4.1) lower case and conveying axis (4.62) is set, conveying axis (4.62) axle head is fixedly installed the second gear (4.66), described first gear (4.65), second gear (4.66) engages each other, helical blade (4.63) it is respectively arranged with on the diameter of axle at conveying axis (4.62) both ends, conveying axis (4.62) middle part is provided with driving blade (4.64).

4. according to the hot blast leveled heating remixing locomotive described in claim 2, it is characterized in that: described casing (4.1) is upper, be arc-shaped corresponding to the housing of discharging opening (4.10) lower position, and wearing plate (4.9) is set in the inner walls of this arc-shaped, described wearing plate (4.9) extends downward casing (4.1) inner chamber bottom surface；Described stretcher (4.2) includes a mounting seat (4.21), bar-shaped trough (4.22) is vertically offered in mounting seat (4.21), adjustable axle seat (4.23) is arranged on bar-shaped trough (4.22), regulation bolt (4.24) is threadedly connected in mounting seat (4.21), and regulation bolt (4.24) upper end is fixing with adjustable axle seat (4.23) to be connected.

5. according to the hot blast leveled heating remixing locomotive described in claim 1, it is characterized in that: described heat wind circulation heating equipment (6) includes the hot blast casing (6.9) being arranged in frame (5), it is fixedly installed combuster (6.2) on described hot blast casing (6.9), circulating fan (6.10), it is connected by pipeline between air outlet and the air inlet of combustor (6.2) of circulating fan (6.10), conveying plate chain (6.6) it is provided with in hot blast casing (6.9), circulation upper air duct (6.7) is formed between conveying plate chain (6.6) upper surface and hot blast casing (6.9) bottom surface, combustor (6.2) lower end air outlet communication loop upper air duct (6.7)；Circulated air lower air duct (6.8) is formed between described conveying plate chain (6.6) lower surface and ground floor asphalt.

6. according to the hot blast leveled heating remixing locomotive described in claim 5, it is characterized in that: described combustor (6.2) is upper is fixedly installed diesel fuel burner (6.1) near circulating fan (6.10) side, described frame (5) bottom is provided with plate chain and fixes seat, plate chain is fixed seat two ends and is rotated respectively and arrange rotation roller, and conveying plate chain (6.6) tensioning is arranged on described rotation roller；Plate chain is fixed and is provided with vent (6.11) on seat, described vent (6.11) communication loop upper air duct (6.7), circulation lower air duct (6.8).

7. according to the hot blast leveled heating remixing locomotive described in claim 5, it is characterized in that: described scraper plate lifting device (9) lower end rotates setting and gathers materials propellers (8), the described propellers that gather materials (8) have two, and two propellers that gather materials (8) are respectively arranged at scraper plate lifting device (9) two bottom sides, the hand of spiral of the roller sheet of two propellers that gather materials (8) surface configurations is contrary.

8. according to the hot blast leveled heating remixing locomotive described in claim 1, it is characterized in that: be additionally provided with hydraulic power mechanism (3) in described frame (5), hydraulic power mechanism (3) at least includes Diesel engine (2), hydraulic pump (3.1), hydraulic oil container (3.2).

9. according to the hot blast leveled heating remixing locomotive described in claim 8, it is characterized in that: in described frame (5), be additionally provided with fuel tank (7), it is connected by oil pipe between fuel tank (7) with diesel fuel burner (6.1), is connected by oil pipe between described hydraulic oil container (3.2) with hydraulic pump (3.1).