A double-layer continuous paving device for crushed stone used in road construction

Abstract

The present invention discloses a double-layer continuous paving device for crushed stone for road construction, which relates to the technical field of construction machinery, and comprises a frame and two paving mechanisms mounted on the frame, wherein the paving mechanism comprises a screed plate and a pusher auger; the paving mechanism further comprises a transverse cloth assembly, wherein the transverse cloth assembly comprises a cylindrical shell fixedly mounted on the frame, wherein a cloth cavity is formed in the cylindrical shell, wherein in the axial direction of the cylindrical shell, the cross section of the cloth cavity increases from the middle part toward the two ends, and the transverse cloth assembly further comprises a rotating shaft coaxially and rotatably arranged in the cloth cavity and a driving source for driving the rotating shaft to rotate. The present invention can horizontally divide the crushed stone before it falls onto the road through the arrangement of the transverse cloth assembly, so that the discharged crushed stone can be evenly spread on the road, thereby reducing the workload of the pusher auger, reducing the load of the pusher auger, and extending the service life of the pusher auger.

Description

Technical Field

[0001] The invention relates to the technical field of building construction machinery, in particular to a double-layer continuous paving device for crushed stones used in road construction. Background Art

[0002] Road literally means the infrastructure for various trackless vehicles and pedestrians to pass through; according to its usage characteristics, it is divided into highways, urban roads, rural roads, factory and mine roads, forestry roads, examination roads, competition roads, automobile test roads, workshop passages and school roads, etc. During the construction of hard ground roads, the roadbed needs to be paved with multiple layers of crushed stones of different materials to ensure the usage requirements.

[0003] Patent CN115881596B has been searched and disclosed a double-layer continuous paving device for crushed stone for road construction, which includes a bearing mechanism and two paving mechanisms installed on the bottom surface thereof, and the paving mechanisms are each installed with a shaping mechanism, and the bearing mechanism includes a support plate and four legs respectively fixed at the four corners of the bottom surface thereof, and the bottom ends of the legs are rotatably connected to rollers, and the top surface of the support plate is fixedly connected to two symmetrically arranged bearing boxes... During paving, the motor drives the auger to rotate, and the leveling plate pushes the stones that are higher than the specified height forward, and the auger pushes the stones that are higher than the specified height to both sides, so that the paving height is more accurate and the overall error is reduced. At the same time, according to the specific paving requirements, the screw at the corresponding position is rotated to extend the slotted plate downward from the bottom surface of the leveling plate, and the paving layer is slotted. When the next layer is paved, it can cross with the bottom layer to improve adhesion.

[0004] However, this patent has the following defects during use: crushed stone falls from the middle onto the road, and an auger is needed to spread the crushed stone. During the spreading process, the screed plate pushes the stones above the specified height forward, i.e., pushing the stones toward the auger will increase the rotational resistance of the auger, which can easily cause serious wear of the auger blades and increase the load on the electric drive components. Summary of the invention

[0005] The object of the present invention is to provide a double-layer continuous paving device for crushed stone for road construction, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0007] The present invention provides a double-layer continuous paving device for crushed stone for road construction, comprising a frame and two paving mechanisms installed on the frame, two sets of moving wheels are symmetrically arranged on both sides of the frame, two material storage boxes are arranged on the top of the frame, the two paving mechanisms are respectively located under the two material storage boxes, and the paving mechanisms include a screed plate and a material pushing auger;

[0008] The paving mechanism also includes a transverse cloth component, which includes a cylindrical shell fixedly mounted on the frame, a cloth cavity is formed in the cylindrical shell, and in the axial direction of the cylindrical shell, the cross-section of the cloth cavity increases continuously from the middle part to the two ends. The transverse cloth component also includes a rotating shaft coaxially and rotatably arranged in the cloth cavity, and a driving source for driving the rotating shaft to rotate. At least three partitions are evenly arranged on the outer side of the rotating shaft, and the side of the partition away from the rotating shaft is in contact with the inner wall of the cloth cavity. A feeding pipe connected to the middle part of the cloth cavity is arranged on the upper part of the cylindrical shell, and the feeding pipe is connected to the corresponding material storage box. A strip-shaped through groove connected to the cloth cavity is opened at the lower part of the cylindrical shell;

[0009] The screed plate is vertically slidably assembled on the frame, and the screed plate is located on the side of the cylindrical shell close to the moving direction of the frame. The pusher auger is rotatably arranged at the bottom of the screed plate, and the pusher auger is arranged along the length direction of the screed plate.

[0010] Furthermore, strip-shaped limit seats are vertically arranged on the frames at both ends of the screed plate, and limit grooves matching the screed plate are opened on the strip-shaped limit seats along their length direction. The two ends of the screed plate are respectively slidably clamped in the limit grooves, and a hydraulic telescopic cylinder is installed between the top of the limit groove and the top of the screed plate.

[0011] Furthermore, the material distribution cavity is evenly provided with material stopper rings along the axial direction thereof, the material stopper rings are tightly attached to the material distribution cavity, and the material stopper rings are fixedly connected to at least three partitions.

[0012] Furthermore, a side of the screed plate close to the pushing auger is a pushing surface, and the pushing surface includes a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are in an eight-shaped shape.

[0013] Furthermore, a slotting assembly is installed on the screed plate, and the slotting assembly is located on the side of the screed plate away from the pusher auger. The slotting assembly includes a fixed plate fixed on the screed plate, and a screw rod evenly penetrating the fixed plate along the length direction of the fixed plate, the screw rod is threadedly connected to the fixed plate, and the bottom end of the screw rod is connected to a slotting strip, and the top end of the screw rod is provided with a rotating handle;

[0014] The cross section of the slotted strip is an isosceles trapezoid, and the upper bottom edge of the cross section of the slotted strip is located on one side of the screed plate, and the bottom end of the slotted strip has a pointed tip.

[0015] Furthermore, the transverse cloth assembly also includes a vibration structure, which includes a vibration rod slidably assembled on a frame obliquely above the cylindrical shell, and the vibration rod can only slide in the radial direction of the cylindrical shell. The frames at both ends of the vibration rod are also provided with return springs for pushing the vibration rod to move toward one side of the cylindrical shell. Both ends of the rotating shaft pass through the cylindrical shell and are fixedly connected with a rotating disk. The outer circumferential surface of the rotating disk is evenly provided with grooves in the circumferential direction. Both ends of the vibration rod are also provided with resistance blocks that abut against the outer circumferential surface of the rotating disk. A knocking rod is evenly provided on the side of the vibration rod close to the cylindrical shell.

[0016] Furthermore, the interior of the rotating shaft is hollow to form a channel with one end open, and the partition is provided with embedded grooves evenly along its length direction on one side close to its rotation direction, a pipe is embedded in the embedded groove, and one end of the pipe is connected to the channel, and the end of the rotating shaft close to its open channel is connected to a water supply source or an air supply source through a rotating joint.

[0017] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0018] The present invention can evenly distribute the crushed stones laterally before they fall onto the road by setting the transverse material distribution components, so that the discharged crushed stones can be evenly spread on the road, reducing the workload of the pushing auger, reducing the load of the pushing auger, and extending the service life of the pushing auger.

[0019] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1 It is a schematic diagram of the overall first-view structure of the present invention;

[0022] Figure 2 is a schematic diagram of the overall second viewing angle structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of two paving mechanisms of the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the cylindrical shell of the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the cylindrical shell of the present invention;

[0026] Figure 6It is a schematic diagram of the structure of the slotting assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the slotted strip structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the present invention after removing the material storage box;

[0029] Fig. 9 yes Figure 8 Schematic diagram of the local structure at A;

[0030] Fig.10 It is a schematic diagram of the partition and pipeline structure of the present invention;

[0031] Fig.11 It is a schematic diagram of the top view structure of the screed plate of the present invention.

[0032] In the figure:

[0033] 1-frame; 2-screed plate; 21-strip limit seat; 22-limit slot; 23-hydraulic telescopic cylinder; 24-pushing surface; 241-first inclined plane; 242-second inclined plane; 3-pushing auger; 4-moving wheel; 5-material box; 6-lateral material distribution component; 61-cylindrical shell; 611-material distribution cavity; 612-strip through slot; 62-rotating shaft; 621-channel; 622-pipeline; 63-partition; 64-feed pipe; 65-blocking ring; 7-slotting component; 71-fixed plate; 72-screw; 73-rotating handle; 74-slotting strip; 8-vibration structure; 81-vibration rod; 82-reset spring; 83-rotating disk; 84-groove; 85-resistance block; 86-knocking rod. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0035] See also Figure 1-Figure 10 The present invention provides a double-layer continuous paving device for crushed stone for road construction, including a frame 1 and two paving mechanisms installed on the frame 1, two sets of moving wheels 4 are symmetrically arranged on both sides of the frame 1, two material boxes 5 are arranged on the top of the frame 1, and the two paving mechanisms are respectively located under the two material boxes 5, and the paving mechanism includes a screed plate 2 and a pushing auger 3.

[0036] When in use, an external vehicle tows the frame 1 along the road to be paved, and the crushed stones in the two material boxes 5 are discharged separately through two paving mechanisms. The two types of crushed stones are superimposed on each other to complete the continuous paving work. Among them, the screed plate 2 of each paving mechanism pushes the stones that are higher than the specified height forward, and the pushing auger 3 pushes the stones that are higher than the specified height to both sides, so that the paving height is more accurate and the overall error is reduced.

[0037] In order to further improve the straightness of the paving plane and reduce the pushing amount of the pushing auger 3, the operating load of the pushing auger 3 is reduced.

[0038] like Figure 2-Figure 5 As shown, the paving mechanism also includes a transverse cloth assembly 6, which includes a cylindrical shell 61 fixedly mounted on the frame 1, and a cloth cavity 611 is formed in the cylindrical shell 61. In the axial direction of the cylindrical shell 61, the cross-section of the cloth cavity 611 increases from the middle to the two ends. The transverse cloth assembly 6 also includes a rotating shaft 62 coaxially and rotatably arranged in the cloth cavity 611 and a driving source (not shown) for driving the rotating shaft 62 to rotate, wherein the driving source can be a motor of the prior art, and at least 3 spacers are evenly arranged on the outer side of the rotating shaft 62. The plate 63 is provided with a plate 63, and the side of the partition plate 63 away from the rotating shaft 62 is in contact with the inner wall of the material distribution cavity 611. The upper part of the cylindrical shell 61 is provided with a feeding pipe 64 connected with the middle part of the material distribution cavity 611. The feeding pipe 64 is connected with the corresponding material containing box 5. The lower part of the cylindrical shell 61 is provided with a strip-shaped through groove 612 connected with the material distribution cavity 611. The smoothing plate 2 is vertically slidably assembled on the frame 1, and the smoothing plate 2 is on the side of the cylindrical shell 61 close to the moving direction of the frame 1. The pushing auger 3 is rotatably arranged at the bottom of the smoothing plate 2, and the pushing auger 3 is arranged along the length direction of the smoothing plate 2.

[0039] In this specific embodiment, the number of the partitions 63 is 6.

[0040] like Figure 5As shown, when in use, the rotating shaft 62 is driven by the driving source to rotate, so that the rotating shaft 62 drives the six partitions 63 on the outside thereof to move in the material distributing chamber 611. Since the six partitions 63 separate the material distributing chamber 611 into six independent chambers, the six independent chambers will continuously rotate around the rotating shaft 62. During this process, the crushed stones in the material holding box 5 that enter the material distributing chamber 611 from the feeding pipe 64 will continuously enter the six independent chambers in sequence. As the six independent chambers rotate continuously, when the independent chamber containing the crushed stones moves to the cylindrical shell 61 After the lower half, the crushed stone moves to the inner wall of the distribution chamber 611 under the action of gravity and slides to both ends along the inner wall of the distribution chamber 611 to be evenly spread in the independent chamber. With the continuous rotation of the rotating shaft 62, when the independent chamber moves to the strip-shaped through groove 612, the crushed stone spread in the independent chamber is discharged from the strip-shaped through groove 612 and evenly falls onto the road, so that the height of the crushed stone in the width direction of the road tends to be consistent. On the one hand, the paving height is more accurate and the overall error is reduced. On the other hand, the pushing amount of the pushing auger 3 is reduced, and the operating load of the pushing auger 3 is reduced.

[0041] It is worth mentioning that the transverse cloth assembly 6 of the present invention can also adaptively adjust the rotation speed of the rotating shaft 62 to adjust the material discharge amount according to the moving speed of the frame 1, avoid excessive accumulation of crushed stones on one side of the screed plate 2, and reduce the increase in resistance of the frame 1 during the movement process.

[0042] like Figure 3 As shown, in a specific embodiment of the present invention, strip-shaped limit seats 21 are vertically arranged on the frame 1 at both ends of the screed plate 2, and limit slots 22 adapted to the screed plate 2 are opened on the strip-shaped limit seat 21 along its length direction, and the two ends of the screed plate 2 are respectively slidably clamped in the limit slots 22, and a hydraulic telescopic cylinder 23 is installed between the top of the limit slot 22 and the top of the screed plate 2. The limit slots 22 on the strip-shaped limit seat 21 define the sliding direction of the screed plate 2, so that the screed plate 2 can slide smoothly during the working process, and the hydraulic telescopic cylinder 23 can drive the screed plate 2 to move, adjust the height of the screed plate 2, that is, adjust the thickness of the paved gravel.

[0043] like Figure 5 As shown, in a specific embodiment of the present invention, the material distribution cavity 611 is evenly provided with blocking rings 65 along its axial direction, the blocking rings 65 are closely attached to the material distribution cavity 611, and the blocking rings 65 are fixedly connected to at least three partitions 63. Based on the above design, when the crushed stone moves to the inner wall of the material distribution cavity 611 and slides, the blocking rings 65 can intercept a certain amount of the crushed stone to prevent all the crushed stone from sliding to both ends of the material distribution cavity 611.

[0044] like Fig.11As shown, in a specific embodiment of the present invention, the side of the screed plate 2 close to the pusher auger 3 is a pusher surface 24, and the pusher surface 24 includes a first inclined surface 241 and a second inclined surface 242, and the first inclined surface 241 and the second inclined surface 242 are in an "eight" shape. Based on the above design, when the screed plate 2 pushes the stone material higher than the specified height, the first inclined surface 241 and the second inclined surface 242 can guide the crushed stone material to both sides, so as to further reduce the running resistance of the pusher auger 3.

[0045] like Figure 6 and Figure 7 As shown, in a specific embodiment of the present invention, a slotting assembly 7 is installed on the screed plate 2, and the slotting assembly 7 is located on the side of the screed plate 2 away from the pusher auger 3. The slotting assembly 7 includes a fixed plate 71 fixed on the screed plate, and a screw 72 evenly penetrates the fixed plate 71 along the length direction of the fixed plate 71, and the screw 72 is threadedly connected to the fixed plate 71, and the bottom end of the screw 72 is connected to a slotting strip 74, and the top end of the screw 72 is provided with a rotating handle 73. Based on the above design, when in use, according to the specific paving requirements, the screw 72 at the corresponding position is rotated to extend the slotted plate downward from the bottom surface of the screed plate 2, and the paving layer is slotted. When the next layer is paved, it can cross with the bottom layer to improve adhesion.

[0046] Furthermore, the cross section of the slotted strip 74 is an isosceles trapezoid, and the upper bottom edge of the cross section of the slotted strip 74 is located on one side of the screed plate 2, and the bottom end of the slotted strip 74 has a pointed end.

[0047] Based on the above design, during the grooving process, that is, when the grooving strip 74 moves relative to the ground, the inclined surface formed by the two oblique sides of the cross section of the grooving strip 74 can squeeze the crushed stones toward both sides to improve the stability of the side walls of the grooving body, so as to avoid the collapse of the grooving body caused by the crushed stones. Secondly, the pointed end at the bottom of the grooving strip 74 can make the grooving body form a V-shaped structure, which can further avoid the collapse of the stone grooving body, resulting in the failure of the crushed stones to enter the grooving body when paving the next layer.

[0048] like Figure 8 and Fig. 9As shown, in a specific embodiment of the present invention, the transverse cloth assembly 6 also includes a vibration structure 8, which includes a vibration rod 81 slidably assembled on a frame 1 obliquely above the cylindrical shell 61, and the vibration rod 81 can only slide in the radial direction of the cylindrical shell 61. The frames 1 at both ends of the vibration rod 81 are also provided with return springs 82 for pushing the vibration rod 81 to move toward one side of the cylindrical shell 61. Both ends of the rotating shaft 62 pass through the cylindrical shell 61 and are fixedly connected with a rotating disk 83. The outer circumferential surface of the rotating disk 83 is evenly provided with grooves 84 in the circumferential direction. Both ends of the vibration rod 81 are also provided with resistance blocks 85 that abut against the outer circumferential surface of the rotating disk 83, and a knocking rod 86 is evenly provided on the side of the vibration rod 81 close to the cylindrical shell 61.

[0049] Based on the above design, during the rotation of the rotating shaft 62, the rotating disk 83 will also rotate accordingly. When the groove 84 of the rotating disk 83 rotates to the position of the resistance block 85, the vibration rod 81 is moved toward the cylindrical shell 61 by the elastic force of the return spring 82 and makes its knocking rod 86 hit the cylindrical shell 61, thereby causing the cylindrical shell 61 to vibrate to accelerate the sliding of the crushed stone on the inner wall of the material distribution chamber 611. When the groove 84 of the rotating disk 83 moves out of the position of the resistance block 85, the resistance block 85 pushes the vibration rod 81 to compress the return spring 82 and move away from the cylindrical shell 61, and the cycle is repeated.

[0050] like Fig.10 As shown, in a specific embodiment of the present invention, the interior of the rotating shaft 62 is hollow to form a channel 621 with an open end, and the partition plate 63 is evenly provided with embedded grooves along its length direction on one side close to its rotation direction, and a pipe 622 is embedded in the embedded groove, and one end of the pipe 622 is connected to the channel 621, and the end of the rotating shaft 62 close to its channel 621 that is open is connected to a water supply source (not shown) or an air supply source (not shown) through a rotating joint (not shown).

[0051] Based on the above design, when in use, the water supply source or the air supply source can inject liquid or gas into the channel 621, and the liquid or gas is discharged from the pipe 622 after passing through the channel 621. The gravel particles adhering to the inner wall of the cloth chamber 611 can be flushed in advance during the rotation of the partition 63, so as to avoid the gravel particles adhering to the inner wall of the cloth chamber 611 from entering between the partition 63 and the cloth chamber 611 during the rotation of the rotating shaft 62, resulting in an increase in the friction between the partition 63 and the cloth chamber 611, thereby causing the wear of the partition 63 and the inner wall of the cloth chamber 611 to increase and the running resistance of the rotating shaft 62 to increase.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-layer continuous paving device for crushed stone for road construction, comprising a frame and two paving mechanisms installed on the frame, two sets of moving wheels are symmetrically arranged on both sides of the frame, two material storage boxes are arranged on the top of the frame, the two paving mechanisms are respectively located under the two material storage boxes, and the paving mechanism comprises a screed plate and a material pushing auger; It is characterized in that The paving mechanism also includes a transverse cloth component, which includes a cylindrical shell fixedly mounted on the frame, a cloth cavity is formed in the cylindrical shell, and in the axial direction of the cylindrical shell, the cross-section of the cloth cavity increases continuously from the middle part to the two ends. The transverse cloth component also includes a rotating shaft coaxially and rotatably arranged in the cloth cavity and a driving source for driving the rotating shaft to rotate. At least three partitions are evenly arranged on the outer side of the rotating shaft, and the side of the partition away from the rotating shaft is in contact with the inner wall of the cloth cavity. A feeding pipe connected to the middle part of the cloth cavity is arranged on the upper part of the cylindrical shell, and the feeding pipe is connected to the corresponding material storage box. A strip-shaped through groove connected to the cloth cavity is opened at the lower part of the cylindrical shell; The screed plate is vertically slidably assembled on the frame, and the screed plate is located on the side of the cylindrical shell close to the moving direction of the frame. The pusher auger is rotatably arranged at the bottom of the screed plate, and the pusher auger is arranged along the length direction of the screed plate. The transverse cloth assembly also includes a vibration structure, which includes a vibration rod slidably mounted on a frame obliquely above the cylindrical shell, the vibration rod can only slide in the radial direction of the cylindrical shell, and the frames at both ends of the vibration rod are also provided with return springs for pushing the vibration rod to move toward one side of the cylindrical shell, both ends of the rotating shaft pass through the cylindrical shell and are fixedly connected with a rotating disk, the outer circumferential surface of the rotating disk is evenly provided with grooves in the circumferential direction, and both ends of the vibration rod are also provided with a resistance block that abuts against the outer circumferential surface of the rotating disk, and a knocking rod is evenly provided on one side of the vibration rod close to the cylindrical shell; The material distributing cavity is evenly provided with material blocking rings along the axial direction thereof, the material blocking rings are tightly attached to the material distributing cavity, and the material blocking rings are fixedly connected to at least three partitions.

2. The double-layer continuous paving device for crushed stone for road construction according to claim 1 is characterized in that: Strip-shaped limit seats are vertically arranged on the frames at both ends of the screed plate. The strip-shaped limit seats are provided with limit grooves adapted to the screed plate along their length direction. The two ends of the screed plate are respectively slidably clamped in the limit grooves, and a hydraulic telescopic cylinder is installed between the top of the limit groove and the top of the screed plate.

3. The double-layer continuous paving device for crushed stone for road construction according to claim 1, characterized in that: The side of the screed plate close to the pushing auger is a pushing surface, and the pushing surface includes a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are in an eight-shaped shape.

4. The double-layer continuous paving device for crushed stone for road construction according to claim 1, characterized in that: A slotting assembly is installed on the screed plate, and the slotting assembly is located on the side of the screed plate away from the push auger. The slotting assembly includes a fixing plate fixed on the screed plate and a screw rod evenly penetrating the fixing plate along the length direction of the fixing plate. The screw rod is threadedly connected to the fixing plate, and the bottom end of the screw rod is connected to a slotting strip, and the top end of the screw rod is provided with a rotating handle; The cross section of the slotted strip is an isosceles trapezoid, and the upper bottom edge of the cross section of the slotted strip is located on one side of the screed plate, and the bottom end of the slotted strip has a pointed tip.

5. The double-layer continuous paving device for crushed stone for road construction according to claim 1, characterized in that: The interior of the rotating shaft is hollow to form a channel with one end open. The partition is provided with embedded grooves evenly along its length direction on one side close to its rotation direction. A pipe is embedded in the embedded groove, and one end of the pipe is connected to the channel. The end of the rotating shaft close to its open channel is connected to a water supply source or an air supply source through a rotating joint.

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