An asphalt spraying device capable of automatic horizontal expansion and contraction

Abstract

This utility model relates to an automatically horizontally retractable asphalt spraying device, comprising an asphalt spraying device body connected to an asphalt distributor truck via a fixed connector. The asphalt spraying device body consists of a long, narrow slide rail and a spray pipe disposed on at least one side of the slide rail. At least one side of the slide rail is recessed inward to form a groove. A corresponding slide bar is disposed on the side of the spray pipe near the groove, and the slide bar is inserted laterally into the groove. Driving mechanisms are respectively provided on the slide rail and the spray pipe. These driving mechanisms drive the slide bar of the spray pipe to move horizontally within the groove of the slide rail, thereby achieving horizontal retraction and extension of the spray pipe on the slide rail. Multiple nozzles equipped with cylinders are evenly arranged on the spray pipe. This utility model has the advantages of simple and reasonable structure, stable operation, and low cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of road machinery and equipment, and relates to an asphalt spraying device that can automatically extend and retract horizontally. Background Technology

[0002] In existing asphalt distributors and super-viscosity fiber cold mix pavers, the spraying devices typically consist of a horizontal spray bar installed at the rear of the asphalt distributor or road sprinkler truck. The front of the horizontal spray bar is connected to the storage tank on the asphalt distributor or road sprinkler truck. Several nozzles are installed horizontally below the horizontal spray bar, and all valves are opened or closed simultaneously by a cylinder. This means that the operation can only be carried out according to the spraying width set by the vehicle body. However, in actual use, due to differences in road width, it cannot be used in narrow road operations or special situations requiring local spraying, or it leads to unnecessary energy waste, and the overall spraying efficiency is not high.

[0003] To address this issue, an automatic horizontally retractable asphalt spraying device was designed to overcome the aforementioned problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an automatic horizontally retractable asphalt spraying device that is simple and reasonable in structure, easy to install, efficient and stable in operation, and low in cost.

[0005] This utility model is achieved through the following technical solution: an automatically horizontally retractable asphalt spraying device, comprising an asphalt spraying device body connected to an asphalt spraying vehicle via a fixed connector. The asphalt spraying device body consists of a long, narrow slide rail and a spray pipe disposed on at least one side of the slide rail. At least one side of the slide rail is recessed inward to form a groove, and a corresponding slide bar is disposed on the side of the spray pipe near the groove. The slide bar is inserted laterally into the groove. A driving mechanism is disposed on the slide rail and the spray pipe respectively. The driving mechanism drives the slide bar of the spray pipe to move horizontally within the groove of the slide rail, thereby realizing the horizontal retraction of the spray pipe on the slide rail. Multiple nozzles with cylinders are evenly disposed on the spray pipe. The cylinders control the opening and closing of the nozzles, thereby ensuring the uniform distribution of sprayed asphalt during construction. The driving mechanism, cylinders, and nozzles are all controlled by a control program to achieve automatic operation.

[0006] Preferably, the drive mechanism consists of a hydraulic motor, a gear, and a rack on one side of the nozzle, all positioned in the middle of the slide rail. The hydraulic motor is mounted on a mounting hole in the middle of the slide rail. A gear is horizontally positioned inside the slide rail directly below the hydraulic motor. The gear and the hydraulic motor are connected by a bearing. A washer is fitted onto the bearing between the gear and the hydraulic motor, and the bearing is then secured with bolts. A long rack is installed on the side of the nozzle slide rail near the groove. When the slide rail is inserted laterally into the groove, the rack and gear mesh, activating the hydraulic motor. The clockwise or counterclockwise rotation of the hydraulic motor enables the horizontal extension and retraction of the nozzle on the slide rail groove.

[0007] Preferably, there are two nozzles, both of the same size and shape, symmetrically arranged on opposite sides of the slide rail. The racks and gears of the two nozzles mesh on opposite sides, and the horizontal extension and retraction of the two nozzles on the slide rail groove is achieved by turning on the hydraulic motor.

[0008] Preferably, the length of the rack is less than the length of the nozzle, and a limiting plate is provided near the end of the nozzle to prevent the nozzle from sliding out of the slide rail groove when it extends or retracts horizontally.

[0009] Preferably, the rack and nozzle are fixed together by a stop plate.

[0010] Preferably, the fixing connection consists of two mounting plates arranged on the upper surface of the slide rail in a left-right distribution. One end of each mounting plate is connected to the upper surface of the slide rail via a rear spray mounting plate, and the other end is connected to the asphalt spraying vehicle. This ensures the overall stability and normal operation of the asphalt spraying device after installation.

[0011] Preferably, the control program is a PLC control system.

[0012] The beneficial effects of this utility model are as follows:

[0013] Existing asphalt distributors or road sprinkler trucks can improve construction efficiency and quality more effectively by installing the automatic horizontal telescopic asphalt spraying device described in this utility model. It is also easier to install, more reliable, and more suitable for applications with space requirements. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 for Figure 1 A schematic diagram of the drive mechanism;

[0016] Figure 3 for Figure 1A schematic diagram of the structure of the central nozzle. Detailed Implementation

[0017] To enable those skilled in the art to more clearly understand the purpose, technical solution and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] The present invention will now be described in detail with reference to the accompanying drawings: Figure 1 As shown, an automatically horizontally retractable asphalt spraying device includes an asphalt spraying device body, which is connected to an asphalt spraying vehicle via a fixed connector. The asphalt spraying device body consists of a long, narrow slide rail 1 and a spray pipe 2 disposed on at least one side of the slide rail 1. At least one side of the slide rail 1 is recessed inward to form a groove 3, and a corresponding slide bar 4 is disposed on the side of the spray pipe 2 near the groove 3. The slide bar 4 is inserted laterally into the groove 3. A drive mechanism is respectively disposed on the slide rail 1 and the spray pipe 2. The drive mechanism drives the slide bar 4 of the spray pipe 2 to move horizontally within the slide rail groove 3, thereby realizing the horizontal retraction and extension of the spray pipe 2 on the slide rail 1. Multiple nozzles 6 equipped with cylinders 5 are evenly disposed on the spray pipe 2. The cylinders 5 control the opening and closing of the nozzles 6, thereby ensuring the uniform distribution of sprayed asphalt during construction. The drive mechanism, cylinders 5, and nozzles 6 are all controlled by a control program to achieve automatic operation.

[0020] like Figure 2-3 As shown, the drive mechanism consists of a hydraulic motor 7, a gear 8, and a rack 9 on one side of the nozzle 2, all positioned in the middle of the slide rail 1. The hydraulic motor 7 is mounted on a mounting hole (not shown in the figure) in the middle of the slide rail 1. The gear 8 is horizontally positioned inside the slide rail 1 directly below the hydraulic motor 7. The gear 8 is connected to the hydraulic motor 7 via a bearing. A washer 10 is fitted onto the bearing between the gear 8 and the hydraulic motor 7, and the bearing is then fixed with bolts 11. A long rack 9 is installed on the side of the nozzle slide 4 near the slide groove 3. When the slide 4 is inserted laterally into the slide groove 3, the rack 9 meshes with the gear 8, and the hydraulic motor 7 is turned on. The horizontal extension and retraction of the nozzle 2 on the slide rail slide groove 3 is achieved by the clockwise or counterclockwise rotation of the hydraulic motor 7.

[0021] The nozzles 2 consist of two identical nozzles of the same size and shape, symmetrically arranged on opposite sides of the slide rail 1. The racks 9 and gears 8 of the two nozzles mesh on opposite sides. Activating the hydraulic motor 7 allows the two nozzles to extend and retract horizontally along the slide rail 1 groove 3. The length of the rack 9 is less than the length of the nozzle 2. A limit plate 12 is provided near the end of the nozzle 2 to prevent it from sliding out of the slide rail groove 3 during horizontal extension and retraction. The rack 9 and nozzle 2 are fixed and limited by a stop plate 13.

[0022] The fixed connecting components are two mounting plates 14 arranged left and right on the upper surface of the slide rail 1. One end of each mounting plate 14 is connected to the upper surface of the slide rail 1 via a rear spray mounting plate 15, and the other end is connected to the asphalt spraying vehicle. This ensures the overall stability and normal operation of the asphalt spraying device after installation. The control program is a PLC control system.

[0023] Existing asphalt distributors or road sprinkler trucks can improve construction efficiency and quality more effectively by installing the automatic horizontal telescopic asphalt spraying device described in this utility model. It is also easier to install, more reliable, and more suitable for applications with space requirements.

[0024] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An automatically horizontally retractable asphalt spraying device, comprising an asphalt spraying device body, the asphalt spraying device body being connected to an asphalt distributor truck via a fixed connector, characterized in that: The asphalt spraying device consists of a long, narrow slide rail (1) and a spray pipe (2) located on at least one side of the slide rail (1). At least one side of the slide rail (1) is recessed inward to form a groove (3), and a corresponding slide bar (4) is provided on the side of the spray pipe (2) near the groove (3). The slide bar (4) is inserted horizontally into the groove (3). A drive mechanism is provided on the slide rail (1) and the spray pipe (2) respectively. The drive mechanism drives the slide bar (4) of the spray pipe (2) to move horizontally in the slide rail groove (3), thereby realizing the horizontal extension and retraction of the spray pipe (2) on the slide rail (1). Multiple nozzles (6) with cylinders (5) are evenly arranged on the spray pipe (2). The cylinders (5) control the opening and closing of the nozzles (6), thereby ensuring that the asphalt sprayed during construction is evenly distributed. The drive mechanism, cylinders (5), and nozzles (6) are all controlled by a control program to achieve automatic operation.

2. The automatically horizontally retractable asphalt spraying device according to claim 1, characterized in that: The drive mechanism consists of a hydraulic motor (7) located in the middle of the slide rail (1), a gear (8), and a rack (9) located on one side of the nozzle (2). The hydraulic motor (7) is installed in the mounting hole in the middle of the slide rail (1). The gear (8) is horizontally arranged in the slide rail (1) directly below the hydraulic motor (7). The gear (8) is connected to the hydraulic motor (7) by a bearing. After a washer (10) is fitted on the bearing between the gear (8) and the hydraulic motor (7), it is fixed by bolts (11). A long rack (9) is installed on the side of the nozzle slide (4) near the slide groove (3). When the slide (4) is inserted into the slide groove (3) laterally, the rack (9) meshes with the gear (8), and the hydraulic motor (7) is turned on. The nozzle (2) is horizontally extended and retracted on the slide rail slide groove (3) by the clockwise or counterclockwise rotation of the hydraulic motor (7).

3. The automatically horizontally retractable asphalt spraying device according to claim 2, characterized in that: There are two nozzles (2), both of the same size and shape, symmetrically arranged on opposite sides of the slide rail (1). The racks (9) of the two nozzles mesh with the gears (8) on opposite sides. By turning on the hydraulic motor (7), the two nozzles can be horizontally extended and retracted on the slide groove (3) of the slide rail (1).

4. The automatically horizontally retractable asphalt spraying device according to claim 3, characterized in that: The length of the rack (9) is less than the length of the nozzle (2). A limiting plate (12) is provided near the end of the nozzle (2). The limiting plate (12) is used to prevent the nozzle (2) from sliding out of the slide rail groove (3) when it extends or retracts horizontally.

5. The automatically horizontally retractable asphalt spraying device according to claim 4, characterized in that: The rack (9) and the nozzle (2) are fixed together by a stop plate (13).

6. The automatically horizontally retractable asphalt spraying device according to claim 5, characterized in that: The fixed connection is two mounting plates (14) arranged on the upper surface of the slide rail (1) in a left-right distribution. One end of the two mounting plates (14) is connected to the upper surface of the slide rail (1) through the rear spray mounting plate (15), and the other end is connected to the asphalt spraying vehicle to ensure the overall stability and normal operation of the asphalt spraying device body after installation.

7. The automatically horizontally retractable asphalt spraying device according to claim 1, characterized in that: The control program is a PLC control system.

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