Anti-segregation material delivery device for a paver

Abstract

The application discloses a segregation-preventing material conveying device for a paver, which comprises a material bin and a scraper assembly for conveying material into the material bin, and a spiral material distributor is arranged in the material bin for conveying material; a material conveying channel corresponding to the position of the scraper assembly is arranged on the top of the material bin, and a slope plate for buffering the falling of material is arranged in the material conveying channel; the spiral material distributor comprises a feeding shaft and a spiral structure formed on the surface of the feeding shaft, and the slope plate is inclined from top to bottom towards the direction of the feeding shaft; compared with the prior art, the slope plate with a certain inclination is additionally arranged, so that the throwing phenomenon of the mixed material is reduced, the material can slide to the spiral material distributor under the inclination of the slope plate, the coarse-fine separation phenomenon is reduced, coarse material and fine material are prevented from being segregated, the material is actively conveyed to the central spiral material distributor under the action of the fan-shaped blade, the feeding pressure of the spiral material distributor is increased, and a better paving effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of paver technology, specifically to an anti-segregation conveying device for pavers. Background Technology

[0002] A paver is a construction equipment mainly used for paving the base and surface layers of a road. A paver consists of various systems that work together to complete the paving work. These systems mainly include a walking system, a hydraulic system, a material conveying system, and a paving system. The paving system uses the paver's material conveying scraper and auger spreader to transport the paving material to the front of the screed, where it is smoothed to form the pavement.

[0003] During the transportation of paving materials, such as asphalt, there are coarse and fine aggregates. When coarse and fine aggregates separate, forming coarse aggregate agglomerates or fine aggregate agglomerates, segregation occurs. Segregation can seriously affect the quality of road construction, causing indicators such as compaction and water permeability to fail to meet requirements, resulting in early-stage defects and shortening the road's lifespan.

[0004] In existing technologies, the conveying scraper and auger of pavers are usually designed with inherent structural features. Segregation is very likely to occur at the outlet of the conveying scraper and at the chain drive box of the auger, resulting in the accumulation of fine material at the outlet of the conveying scraper and the accumulation of coarse material in the chain drive box of the auger, forming fine material segregation at the outlet of the conveying scraper and coarse material segregation in the middle.

[0005] Meanwhile, in existing pavers, due to the height difference between the outlet position of the conveying scraper and the auger distributor, the paving material will be scattered due to the height difference when it is conveyed from the conveying scraper to the hopper of the auger distributor. At the same time, the forward movement of the paver causes the paving material to have a tendency to roll forward. During the whole process, because the coarse material is large in volume, it is easily driven by the conveying scraper, so the coarse material is conveyed quickly. However, the fine material is small in volume and is not easily driven by the conveying scraper, so the fine material is conveyed slowly. This causes the paving layer at the outlet to show the phenomenon of fine material agglomeration, resulting in fine material segregation.

[0006] The existing auger chain box of the paver is installed in the middle of the auger, occupying a certain space in the hopper of the auger spreader. The mixture conveyed from the conveying scraper to the hopper is not easy to actively reach the middle of the screed due to the obstruction of the auger spreader drive chain box. It often passively reaches the middle position through compression to form a layer. This process is very easy to create a slope, and coarse material is easily squeezed away, resulting in a significant amount of coarse material in the middle part, forming coarse material segregation. Utility Model Content

[0007] The present invention aims to overcome the defects in the prior art and provide an anti-segregation conveying device for pavers that increases the feeding pressure and improves the feeding saturation.

[0008] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: an anti-segregation conveying device for a paver, comprising a hopper and a scraper assembly for conveying materials into the hopper, wherein a spiral distributor for conveying materials is provided inside the hopper; a conveying channel corresponding to the position of the scraper assembly is provided at the top of the hopper, and a slope plate for buffering the falling materials is provided inside the conveying channel; the spiral distributor comprises a feeding shaft and a spiral structure formed on the surface of the feeding shaft, and the slope plate is inclined from top to bottom toward the feeding shaft; a fan-shaped blade for moving materials toward the center of the feeding shaft is also installed on the feeding shaft; a connecting pin for adjusting the angle of the fan-shaped blade is provided on the feeding shaft.

[0009] As a preferred embodiment of this utility model, the hopper is provided with a auger chain box in the middle for driving the feeding shaft to rotate.

[0010] As a preferred embodiment of this utility model, the feeding shaft has a first spiral segment and a second spiral segment for driving the material to move towards opposite ends of the feeding shaft, and the auger chain box is located between the first spiral segment and the second spiral segment.

[0011] As a preferred embodiment of this utility model, the first helical segment and the second helical segment have opposite thread directions, and both the first helical segment and the second helical segment are provided with fan-shaped blades.

[0012] As a preferred embodiment of this utility model, the fan-shaped blade includes a conical base and a fan-shaped body connected to the conical base, wherein an inner spiral structure connected to a connecting pin is formed in the middle of the conical base.

[0013] As a preferred embodiment of this utility model, the conical base has a cleaning hole on its side that communicates with the inner spiral structure.

[0014] As a preferred embodiment of this utility model, the surface of the connecting pin is formed with an outer spiral structure adapted to the inner spiral structure, and a radial through hole for connecting the connecting pin is formed on the feeding shaft.

[0015] As a preferred embodiment of this utility model, the connecting pin is provided with an adjusting seat that abuts against the feeding shaft. The adjusting seat has a first end face tooth, and the bottom of the conical base has a second end face tooth for locking the rotation angle of the conical base. The first end face tooth and the second end face tooth mesh with each other.

[0016] As a preferred embodiment of this utility model, the connecting pin is further provided with a locking nut for locking the connecting pin, and the locking nut and the adjusting seat respectively abut against the opposite sides of the feeding shaft.

[0017] In a preferred embodiment of this utility model, the fan-shaped blades rotate synchronously with the feeding shaft.

[0018] Compared with existing technologies, by adding a slope plate with a certain inclination, the spillage of the mixture is reduced, and the material can slide down the spiral distributor under the inclination of the slope plate, reducing the separation of coarse and fine materials and thus avoiding the separation of coarse and fine materials. At the same time, by adding fan-shaped blades, the material is actively conveyed to the central spiral distributor under the action of the fan-shaped blades, increasing the feeding pressure of the spiral distributor, improving the feeding saturation, and achieving a better layering effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of material conveying;

[0020] Figure 2 This is a top view of the spiral feeder;

[0021] Figure 3 This is a top view of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of a fan-shaped blade;

[0023] Figure 5 This is a schematic diagram showing the connection between the fan-shaped blade and the connecting pin;

[0024] Figure 6 This is a bottom view of the fan-shaped blades;

[0025] Reference numerals: 1. Hopper; 2. Spiral distributor; 3. Feeding shaft; 31. Spiral structure; 32. First spiral section; 33. Second spiral section; 34. Radial through hole; 35. Gear; 4. Slope plate; 5. Screw chain box; 6. Fan-shaped blade; 61. Conical base; 62. Fan-shaped body; 63. Inner spiral structure; 64. Cleaning hole; 65. Second end face tooth; 7. Connecting pin; 71. Adjusting seat; 72. First end face tooth; 73. Outer spiral structure; 74. Locking nut; 8. Conveying channel; 9. Scraper assembly. Detailed Implementation

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figures 1-6 As shown, an anti-segregation conveying device for a paver includes a hopper 1 and a scraper assembly 9 for conveying materials into the hopper 1. The hopper 1 is equipped with a spiral distributor 2 for conveying materials. A conveying channel 8 corresponding to the position of the scraper assembly 9 is provided at the top of the hopper 1. A slope plate 4 for buffering material descent is provided within the conveying channel 8. The spiral distributor 2 includes a feeding shaft 3 and a spiral structure 31 formed on the surface of the feeding shaft 3. The slope plate is inclined downwards towards the feeding shaft 3. A fan-shaped blade 6 for moving materials towards the center of the feeding shaft 3 is also installed on the feeding shaft 3. A connecting pin 7 for adjusting the angle of the fan-shaped blade 6 is provided on the feeding shaft 3.

[0028] The spiral distributor 2 is installed inside the hopper 1, which is used to receive the material from the scraper assembly 9. The spiral distributor 2 is used to convey the material in the hopper 1 again. The spiral distributor 2 drives the material to move under its own spiral action, thus laying the material. The feeding shaft 3 and the slope plate 4 are both used to receive the material. Under the action of the slope plate 4, which is inclined towards the feeding shaft 3, the material falling onto the slope plate 4 is buffered by the slope plate 4 and moves towards the feeding shaft 3 under its own gravity. The material is conveyed under the action of the feeding shaft 3.

[0029] The slope plate 4 can be installed at the bottom of the material conveying channel 8, corresponding to the feeding shaft 3. The slope plate 4 is located above the feeding shaft 3. After the material comes into contact with the slope plate 4 and is buffered, it is conveyed under the action of the feeding shaft 3.

[0030] The spiral structure 31 is used to convey materials along the length of the spiral structure 31, while the fan-shaped blades 6 are set at the spiral structure 31 to reverse the material conveying process of the spiral structure 31, thereby increasing the feeding pressure of the spiral structure 31 on the material and improving the feeding saturation.

[0031] The hopper 1 is provided with a auger chain box 5 in the middle for driving the feeding shaft 3 to rotate. The feeding shaft 3 has a first spiral section 32 and a second spiral section 33 for driving the material to move to opposite ends of the feeding shaft 3. The auger chain box 5 is located between the first spiral section 32 and the second spiral section 33.

[0032] The first spiral section 32 and the second spiral section 33 are symmetrically arranged along the middle of the feeding shaft 3. The first spiral section 32 and the second spiral section 33 respectively drive the material to move towards the opposite ends of the feeding shaft 3. Therefore, the hopper 1 set in the middle of the spiral distributor 2 can meet the material feeding in the middle of the feeding shaft 3. The rotation of the feeding shaft 3 synchronously drives the material to move towards both ends of the feeding shaft 3, accelerating the material movement efficiency.

[0033] The first helical segment 32 and the second helical segment 33 have opposite thread directions, and both the first helical segment 32 and the second helical segment 33 are provided with fan-shaped blades 6. The fan-shaped blades 6 include a conical base 61 and a fan-shaped body 62 connected to the conical base 61. The middle part of the conical base 61 forms an inner helical structure 63 connected to the connecting pin 7.

[0034] The tapered base 61 gradually decreases in size towards the fan-shaped main body 62. The tapered base 61 is used to increase the overall structural size of the bottom of the fan-shaped blade 6, and the top of the tapered base 61 is connected to the fan-shaped main body 62 without affecting the guiding effect of the fan-shaped main body 62 on the material. The fan-shaped blade 6 is used to contact the material, and the inclined fan-shaped blade 6 realizes the guiding effect on the material.

[0035] The conical base 61 has a cleaning hole 64 on its side that is connected to the inner spiral structure 63. The inner spiral structure 63 is a blind hole structure. With the cleaning hole 64, the internal condition of the inner spiral structure 63 can be observed directly, preventing the material from affecting the inner spiral structure 63 before the fan-shaped blade 6 is used.

[0036] The surface of the connecting pin 7 is formed with an outer spiral structure 73 that is compatible with the inner spiral structure 63, and a radial through hole 34 for the connecting pin 7 is formed on the feeding shaft 3. The radial through hole 34 is arranged along the radial direction of the feeding shaft 3. The connecting pin 7 is arranged through the radial through hole 34. During the rotation of the feeding shaft 3, the connecting pin 7 and the fan-shaped blade 6 connected to the connecting pin 7 are driven to rotate synchronously. Thus, under the rotation of the fan-shaped blade 6, the material is driven to move inward.

[0037] The connecting pin 7 is provided with an adjusting seat 71 that abuts against the feeding shaft 3. The adjusting seat 71 has a first end face tooth 72. The bottom of the conical base 61 has a second end face tooth 65 for locking the rotation angle of the conical base 61. The first end face tooth 72 and the second end face tooth 65 mesh with each other.

[0038] The connecting pin 7 is connected to the conical base 61 by threads. After the threads of the connecting pin 7 and the conical base 61 are rotated to a certain position, the first end face tooth 72 and the second end face tooth 65 mesh with each other, thereby limiting the angle of the fan-shaped blade 6 on the adjusting seat 71.

[0039] The connecting pin 7 is also provided with a locking nut 74 for locking the connecting pin 7. The locking nut 74 and the adjusting seat 71 abut against the opposite sides of the feeding shaft 3 respectively. Under the abutting action of the locking nut 74 and the feeding shaft 3, the adjusting seat 71 and the feeding shaft 3 are locked together.

[0040] When it is necessary to adjust the tilt angle of the fan-shaped blade 6, loosen the locking nut 74, rotate the adjusting seat 71 according to the required tilt angle, and drive the fan-shaped blade 6 to rotate synchronously, thereby adjusting the tilt angle of the fan-shaped blade 6. After adjusting to the appropriate angle, tighten the locking nut 74 to lock the angle of the adjusting seat 71 and the fan-shaped blade 6.

[0041] In actual use, the fan-shaped blade 6 and the connecting pin 7 are first assembled under the action of the thread until the first end face tooth 72 and the second end face tooth 65 are engaged. The connecting pin 7 is then passed through the feeding shaft 3. The tilt angle of the fan-shaped blade 6 is adjusted by rotating the fan-shaped blade 6. After the adjustment is completed, the angle of the adjusting seat 71 and the fan-shaped blade 6 is locked by tightening the locking nut 74. The slope plate 4 is set close to the feeding shaft 3, and the feeding shaft 3 is located below the slope plate 4. The installation angle of the slope plate 4 is 40°-50°, and the thickness of the slope plate 4 is 8-10mm.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0043] Although this document uses numerous reference numerals from the accompanying drawings, such as hopper 1, spiral distributor 2, feeding shaft 3, spiral structure 31, first spiral segment 32, second spiral segment 33, radial through hole 34, gear 35, slope plate 4, auger chain box 5, fan-shaped blade 6, conical base 61, fan-shaped body 62, inner spiral structure 63, cleaning hole 64, second end face tooth 65, connecting pin 7, adjusting seat 71, first end face tooth 72, outer spiral structure 73, locking nut 74, conveying channel 8, scraper assembly 9, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A material conveying device for a paver to prevent segregation, comprising a hopper (1) and a scraper assembly (9) for conveying material into the hopper (1), wherein the hopper (1) is provided with a spiral distributor (2) for conveying material; characterized in that, The top of the hopper (1) is provided with a conveying channel (8) corresponding to the position of the scraper assembly (9), and the conveying channel (8) is provided with a slope plate (4) for buffering the falling material; the spiral distributor (2) includes a feeding shaft (3) and a spiral structure (31) formed on the surface of the feeding shaft (3), and the slope plate is inclined from top to bottom toward the feeding shaft (3); the feeding shaft (3) is also equipped with a fan-shaped blade (6) for moving the material toward the middle of the feeding shaft (3); the feeding shaft (3) is provided with a connecting pin (7) for adjusting the angle of the fan-shaped blade (6).

2. The anti-segregation conveying device for a paver according to claim 1, characterized in that, The hopper (1) is equipped with a auger chain box (5) in the middle for driving the feeding shaft (3) to rotate.

3. The anti-segregation conveying device for a paver according to claim 2, characterized in that, The feeding shaft (3) has a first spiral section (32) and a second spiral section (33) for driving the material to move towards the opposite ends of the feeding shaft (3), and the auger chain box (5) is located between the first spiral section (32) and the second spiral section (33).

4. The anti-segregation conveying device for a paver according to claim 3, characterized in that, The first helical segment (32) and the second helical segment (33) have opposite thread directions, and both the first helical segment (32) and the second helical segment (33) are provided with fan-shaped blades (6).

5. The anti-segregation conveying device for a paver according to claim 1, characterized in that, The fan-shaped blade (6) includes a conical base (61) and a fan-shaped body (62) connected to the conical base (61). The conical base (61) has an inner spiral structure (63) connected to the connecting pin (7) in the middle.

6. The anti-segregation conveying device for a paver according to claim 5, characterized in that, The conical base (61) has a cleaning hole (64) on its side that communicates with the inner spiral structure (63).

7. The anti-segregation conveying device for a paver according to claim 5, characterized in that, The surface of the connecting pin (7) is formed with an outer spiral structure (73) that is compatible with the inner spiral structure (63), and a radial through hole (34) for connecting the connecting pin (7) is formed on the feeding shaft (3).

8. The anti-segregation conveying device for a paver according to claim 7, characterized in that, The connecting pin (7) is provided with an adjusting seat (71) that abuts against the feeding shaft (3). A first end face tooth (72) is formed on the adjusting seat (71), and a second end face tooth (65) for locking the rotation angle of the conical base (61) is formed at the bottom. The first end face tooth (72) and the second end face tooth (65) mesh with each other.

9. A material conveying device for a paver according to claim 8, characterized in that, The connecting pin (7) is also provided with a locking nut (74) for locking the connecting pin (7), and the locking nut (74) and the adjusting seat (71) respectively abut against the opposite sides of the feeding shaft (3).

10. A material conveying device for a paver according to claim 1, characterized in that, The fan-shaped blades (6) rotate synchronously with the feeding shaft (3).

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