Anti-segregation device for asphalt mixture loading

Abstract

The utility model discloses an asphalt mixture loading anti-segregation device which comprises a fixed ring fixedly sleeved on a discharging pipe of an asphalt mixing station, a ring groove is arranged on the upper ring surface of the fixed ring, a rotating ring is movably sleeved on the discharging pipe positioned above the fixed ring, an annular fluted disc is arranged on the upper ring surface of the rotating ring, and an annular fluted disc is arranged on the upper ring surface of the rotating ring. A convex ring matched and clamped with the ring groove is arranged on the lower ring surface; the outer ring face of the rotating ring is fixedly sleeved with a material guiding pipe, and the material guiding pipe is composed of a hard upper straight pipe, a corrugated telescopic pipe and a hard lower straight pipe. A first motor and a second motor are arranged on the portion, located above the rotating ring, of the discharging pipe, a transmission shaft of the first motor is provided with a transmission gear meshed with the annular fluted disc, a transmission shaft of the second motor is provided with a winch with a traction rope, and the outer end of the traction rope is connected with the hard lower straight pipe. The device has the advantages that the flexible adjustment of the blanking position is realized, the asphalt mixture is prevented from rolling over or sliding too much on the loading vehicle, and the occurrence frequency of segregation in the loading process of the asphalt mixture is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of road engineering, in particular to an anti-segregation device for loading asphalt mixture, which is used for improving the discharging pipe of an asphalt mixing plant. Background Art

[0002] An asphalt pavement is constructed by processes such as mixing, paving, and rolling of asphalt mixture, and it is one of the main pavement forms in current road engineering. Asphalt mixture segregation is a common problem in road engineering construction, which will seriously affect the construction quality and service performance of asphalt pavement. Segregation during the loading process of asphalt mixture is the main cause of mixture segregation. Among them, reasons such as the excessive height of the discharging pipe of the asphalt mixing plant from the loading truck, the too-fast speed of the asphalt mixture during the discharging process, excessive rolling of the asphalt mixture on the loading truck, and the inability of the discharging pipe of the asphalt mixing plant to flexibly adjust the relative position with the loading truck will all lead to segregation during the loading process of asphalt mixture; currently, the height and orientation of the discharging pipe of a conventional asphalt mixing plant are fixed, so the above problems generally exist, resulting in frequent segregation during the loading process of asphalt mixture and seriously affecting the quality of road engineering. Summary of the Invention

[0003] The purpose of the utility model is to provide an anti-segregation device for loading asphalt mixture in view of the defects of the prior art.

[0004] To achieve the above purpose, the utility model can adopt the following technical solutions:

[0005] The anti-segregation device for loading asphalt mixture of the utility model includes a fixing ring fixedly sleeved on the discharging pipe of an asphalt mixing plant. An annular groove is formed on the upper ring surface of the fixing ring. A rotating ring is movably sleeved on the discharging pipe above the fixing ring. An annular gear disk is arranged on the upper ring surface of the rotating ring, and a convex ring adapted to be clamped with the annular groove is arranged on its lower ring surface; A guiding pipe covering the outside of the fixing ring is fixedly sleeved on the outer ring surface of the rotating ring. The guiding pipe is successively composed of a hard upper straight pipe, a corrugated telescopic pipe, and a hard lower straight pipe from top to bottom; A first motor and a second motor are arranged on the discharging pipe above the rotating ring. Among them, a transmission gear is arranged on the transmission shaft of the first motor, and the transmission gear meshes with the annular gear disk to drive the annular gear disk to rotate. A winch with a traction rope is arranged on the transmission shaft of the second motor, and the outer end of the traction rope is connected to the hard lower straight pipe to pull the hard lower straight pipe to move up and down.

[0006] Furthermore, a rubber gasket is arranged on the joint surface between the fixing ring and the rotating ring. The rubber gasket is of an annular structure and is fixedly attached to the upper ring surface of the fixing ring outside the annular groove, which can increase the friction between the fixing ring and the rotating ring and make the rotation of the annular gear disk and the rotating ring driven by the first motor more stable.

[0007] Furthermore, a pair of buffer plates are hinged inside the rigid upper straight pipe. A pulling spring is arranged on the upper surface of the buffer plate, and a limiting pull rope is arranged on the lower surface of the buffer plate. The upper end of the pulling spring is fixedly connected to the inner wall of the rigid upper straight pipe for pulling the buffer plate upward and applying an upward rotational force to the buffer plate. The lower end of the limiting pull rope is fixedly connected to the inner wall of the rigid upper straight pipe for overcoming the acting force of the pulling spring and pulling the buffer plate to maintain a horizontal posture. The buffer plate can effectively buffer the asphalt mixture discharged from the discharge pipe, avoiding large impact force during the falling of the asphalt mixture, which may cause large deformation of the corrugated expansion pipe or position deviation of the rigid lower straight pipe.

[0008] Furthermore, polytetrafluoroethylene coatings with a thickness of 1 - 3 mm are evenly distributed on the inner walls of the rigid upper straight pipe, the corrugated expansion pipe, and the rigid lower straight pipe, which can minimize the adhesion of the asphalt mixture to the inner walls as much as possible.

[0009] The advantages of the present utility model are as follows: The first motor drives the rotating ring to rotate, enabling the entire material guiding pipe to rotate with the rotating ring, thereby changing the position of the lower port of the rigid lower straight pipe and achieving flexible adjustment of the discharging position. Additionally, the second motor can pull the rigid lower straight pipe to adjust the height position of the lower port of the rigid lower straight pipe, so that the asphalt mixture can always fall at a relatively low position from the loading truck, avoiding excessive tumbling or sliding of the asphalt mixture on the loading truck, reducing the occurrence frequency of segregation during the loading process of the asphalt mixture, and ensuring the construction quality of subsequent road projects. Description of the Drawings

[0010] Figure 1 is a structural schematic diagram of the present utility model. Detailed Embodiment

[0011] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0012] As Figure 1 shown, the anti-segregation device for loading asphalt mixture of the present utility model includes a fixed ring 1, which is coaxially and fixedly sleeved at the nozzle of the discharge pipe 100 of the asphalt mixing plant, and its lower ring surface is flush with the edge of the discharge pipe 100. A ring groove 2 is circumferentially formed on the upper ring surface of the fixed ring 1. The ring groove 2 is located inside the upper ring surface of the fixed ring 1, closely adjacent to the outer wall of the discharge pipe 100 and coaxial with the discharge pipe 100.

[0013] A rotating ring 3 is movably sleeved on the discharging pipe 100 above the fixed ring 1, and the rotating ring 3 is coaxial with the fixed ring 1; a convex ring 4 adapted to be clamped with the annular groove 2 is arranged on the lower ring surface of the rotating ring 3. Through the adaptation and clamping of the convex ring 4 and the annular groove 2, the rotational movement of the rotating ring 3 relative to the fixed ring 1 can be realized. To improve the stability of the rotating ring 3 during rotational movement, a rubber gasket 5 can also be arranged on the joint surface between the fixed ring 1 and the rotating ring 3. The rubber gasket 5 is of an annular structure and is fixedly attached to the upper ring surface of the fixed ring 1 outside the annular groove 2, which can increase the friction force between the fixed ring 1 and the rotating ring 3, make the rotation angle of the rotating ring 3 more accurate when rotating relative to the fixed ring 1, and prevent the phenomenon of sliding and deviation.

[0014] A material guiding pipe 6 is fixedly sleeved on the outer ring surface of the rotating ring 3. The material guiding pipe 6 covers the outside of the fixed ring 1, and there is a certain gap between its inner wall and the outer ring surface of the fixed ring 1, so that the material guiding pipe 6 is always connected with the discharging pipe 100. And when the material guiding pipe 6 rotates with the rotating ring 3, its inner wall will not come into contact friction with the fixed ring 1, and the fixed ring 1 will not affect the rotation of the material guiding pipe 6, ensuring that the asphalt mixture discharged from the asphalt mixing plant through the discharging pipe 100 can be completely discharged into the material guiding pipe 6 and then discharged outward through the material guiding pipe 6. Among them, the material guiding pipe 6 is successively composed of a rigid upper straight pipe 6.1, a corrugated expansion pipe 6.2 and a rigid lower straight pipe 6.3 from top to bottom. On the premise of ensuring the coaxial connection of the rigid upper straight pipe 6.1 and the discharging pipe 100, the height position and angular position of the rigid lower straight pipe 6.3 can be easily changed by using the expansion and bending performance of the corrugated expansion pipe 6.2; to prevent too much asphalt mixture from adhering to the inner wall of the material guiding pipe 6, a polytetrafluoroethylene coating with a thickness of 1 - 3 mm can also be coated on the inner walls of the rigid upper straight pipe 6.1, the corrugated expansion pipe 6.2 and the rigid lower straight pipe 6.3.

[0015] In addition, to realize the overall rotation of the material guiding pipe 6 and the height position adjustment of the rigid lower straight pipe 6.3, an annular gear disk 7 with its tooth surface facing upward is also circumferentially arranged on the upper ring surface of the rotating ring 3, and a first motor 8 and a second motor 9 are fixedly arranged on the outer wall of the discharging pipe 100 above the rotating ring 3; among them, a transmission gear 10 is arranged on the transmission shaft of the first motor 8, and the transmission gear 10 meshes with the annular gear disk 7, which can drive the annular gear disk 7 to rotate under the drive of the first motor 8, and then drive the material guiding pipe 6 fixedly sleeved on the rotating ring 3 to rotate as a whole; while a winch 11 is arranged on the transmission shaft of the second motor 9, and a traction rope 12 is wound around the winch 11. The outer end (i.e., the pulling end) of the traction rope 12 is fixedly connected to the outer wall of the rigid lower straight pipe 6.3, and the traction rope 12 can be easily wound and released under the drive of the second motor 9, and then pull the rigid lower straight pipe 6.3 to move upward or downward.

[0016] Furthermore, to prevent the asphalt mixture from falling from the discharge pipe 100 into the guide pipe 6 with excessive impact force, which may cause large deformation of the corrugated expansion pipe 6.2 or position deviation of the rigid lower straight pipe 6.3, a pair of buffer plates 13 can be hinged inside the rigid upper straight pipe 6.1. A pulling spring 14 is arranged on the upper surface of the buffer plate 13, and a limiting pulling rope 15 is arranged on its lower surface. Among them, the upper end of the pulling spring 14 is fixedly connected to the inner wall of the rigid upper straight pipe 6.1 above the buffer plate 13, used to pull the buffer plate 13 upward and apply an upward rotational force to the buffer plate 13. The lower end of the limiting pulling rope 15 is fixedly connected to the inner wall of the rigid upper straight pipe 6.1 below the buffer plate 13, used to overcome the force of the pulling spring 14 and pull the buffer plate 13 to maintain a horizontal posture. Thus, when the buffer plate 13 is not affected by the asphalt mixture, it can always be horizontally blocked near the pipe orifice of the discharge pipe 100 to form an elastic block, thereby effectively buffering the asphalt mixture discharged from the discharge pipe 100.

[0017] When loading the asphalt mixing plant, the asphalt mixture will be discharged into the guide pipe 6 through the discharge pipe 100 to complete the loading. During the loading process, the second motor 9 can be used to drive the winch 11 to rotate, thereby realizing the winding or unwinding of the traction rope 12, driving the rigid lower straight pipe 6.3 to flexibly adjust its height position, so that the height of the lower port of the rigid lower straight pipe 6.3 from the loading truck is always less than 50 cm, ensuring that the asphalt mixture can always fall from a lower position relative to the loading truck, avoiding excessive tumbling of the asphalt mixture on the loading truck, and reducing segregation caused by the tumbling of the asphalt mixture.

[0018] When a large amount of asphalt mixture accumulates on one side of the hopper of the loading truck, the first motor 8 can be used to drive the transmission gear 10 to rotate, thereby driving the annular gear disk 7 and the rotating ring 3 to rotate, causing the entire guide pipe 6 to rotate, and widely adjusting the position of the lower port of the rigid lower straight pipe 6.3, so that the lower port of the rigid lower straight pipe 6.3 moves to the other side of the hopper of the loading truck for discharging, avoiding excessive accumulation and sliding of the asphalt mixture on one side of the loading truck, and reducing segregation caused by the sliding of the asphalt mixture.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, the directional indicators will also change accordingly.

[0020] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

Claims

1. An anti-segregation device for loading asphalt mixture, characterized by: It comprises a fixed ring which is fixedly sleeved on a discharge pipe of an asphalt mixing plant, an annular groove is provided on the upper annular surface of the fixed ring, a rotating ring is movably sleeved on the discharge pipe located above the fixed ring, an annular toothed disk is provided on the upper annular surface of the rotating ring, and a convex ring which is adapted to engage with the annular groove is provided on the lower annular surface thereof; a material guide pipe which is covered on the outer side of the fixed ring is fixedly sleeved on the outer annular surface of the rotating ring, and the material guide pipe is composed of a hard upper straight pipe, a corrugated telescopic pipe and a hard lower straight pipe from top to bottom; a first motor and a second motor are provided on the discharge pipe located above the rotating ring, wherein a transmission gear is provided on the transmission shaft of the first motor, the transmission gear is meshed with the annular toothed disk to drive the annular toothed disk to rotate, and a winch with a traction rope is provided on the transmission shaft of the second motor, the outer end of the traction rope is connected with the hard lower straight pipe to pull the hard lower straight pipe to move up and down.

2. The asphalt mixture loading anti-segregation device according to claim 1, characterized in that: A rubber gasket is arranged on the fitting surface between the fixed ring and the rotating ring.

3. The asphalt mixture loading anti-segregation device according to claim 1, characterized in that: A pair of buffer plates are hinged in the hard upper straight tube, a pulling spring is arranged on the upper surface of the buffer plate, and a limit pull rope is arranged on the lower surface of the buffer plate.

4. The asphalt mixture loading anti-segregation device according to claim 1, characterized in that: The inner walls of the rigid upper straight tube, the corrugated telescopic tube and the rigid lower straight tube are uniformly coated with a polytetrafluoroethylene coating having a thickness of 1 to 3 mm.

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