An adjustable distribution structure

Abstract

The utility model discloses an adjustable spreading structure belongs to the field of automatic pavement construction equipment, including spreading bin, the bottom of spreading bin is equipped with left baffle and right baffle, and the left baffle and right baffle form spreading port, install switch subassembly at spreading port, the spreading bin still includes switch limiting component, switch limiting component includes limiting rod and limiting drive part, and the stroke of switch subassembly is limited through switch limiting component to control the opening and closing degree of spreading port, the problem that the spreading rate of the broken material is difficult to control when the broken material spreading vehicle of pavement construction spreads broken material in the prior art is solved, and the different demand of spreading rate when meeting different pavement conditions is difficult.

Description

Technical Field

[0001] This utility model relates to an automated road construction equipment, and more particularly to an adjustable spreading structure. Background Technology

[0002] As a key piece of equipment in road paving construction, the spreader is mainly used for the uniform spreading of materials such as crushed stone and aggregates to form the base layer, bonding layer, or surface anti-skid structure of asphalt pavement. In existing technology, the spreading nozzle is generally controlled to open and close using cylinders or hydraulic cylinders during the spreading process. However, since the stroke of hydraulic and pneumatic cylinders is a fixed value, it is impossible to control the degree of opening and closing of the spreading nozzle as needed.

[0003] For example, the "Retractable Stone Spreader with Steplessly Adjustable Spreading Width" disclosed in Chinese patent literature, with publication number CN204325872U, includes a chassis, an engine bracket mounted on the chassis, and a stone spreading device. The stone spreading device includes a hopper support frame and a left spreading hopper and a right spreading hopper movably mounted on the hopper support frame. Both the spreading hopper and the right spreading hopper are equipped with material gates. The left spreading hopper and the right spreading hopper are non-contacting in their natural state. The retractable stone spreader with steplessly adjustable spreading width also includes a relative position adjustment device mounted on the left spreading hopper and the right spreading hopper, and a baffle plate fixedly mounted on the hopper support frame and corresponding to the material gate positions of the left spreading hopper and / or the right spreading hopper. The relative position adjustment device drives the left spreading hopper and the right spreading hopper to slide relative to each other. This patent uses a continuously variable cylinder to adjust the opening and closing size of the material gate. However, its shortcomings are that the stroke adjustment of the continuously variable cylinder needs to be achieved by adjusting the limit switch. The adjustment process can only be carried out after the machine is stopped. Furthermore, once it is used in a large spreading vehicle, since multiple drive components are needed to open and close the material gate, the stroke adjustment of different cylinders will inevitably be different. This will lead to different openings of the material gate at different positions, resulting in uneven material feeding. Utility Model Content

[0004] The present invention aims to overcome the problem in the prior art that the spreading rate of aggregates by aggregate spreaders in road construction is difficult to control and cannot meet the different spreading rate requirements for different road conditions. It provides an adjustable spreading structure that can accurately adjust the spreading rate of aggregates.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This utility model discloses an adjustable spreading structure, including a spreading chamber. The bottom of the spreading chamber is provided with a left baffle and a right baffle, and a spreading port is formed between the left baffle and the right baffle. A switch assembly is installed at the spreading port. The spreading chamber also includes a switch limiting assembly, which includes a limiting rod and a limiting drive component.

[0006] In this application, a switch limit component is used to limit the travel of the switch assembly, thereby controlling the opening and closing degree of the spreading nozzle. When it is necessary to increase the spreading rate, the size of the spreading nozzle opening is increased; when it is necessary to decrease the spreading rate, the size of the spreading nozzle opening is decreased. Since the presence of the limit rod can limit the switch assembly, and the position of the limit rod can be adjusted by the limit drive component, the spreading rate can be adjusted without stopping the machine, thus improving the efficiency of continuous construction on a long road surface with varying road conditions.

[0007] Preferably, a spreading roller is provided below the spreading port, and the spreading roller is driven by a roller motor.

[0008] Preferably, the lower end of the left baffle is located to the left of the vertical axis of symmetry of the spreading roller.

[0009] Preferably, a support base is provided below the spreading roller, and a roller that contacts the ordinary roller is installed on the support base.

[0010] Preferably, a height adjustment structure is installed between the support base and the roller.

[0011] Preferably, the switch assembly includes a switch shaft and a swing arm mounted on the switch shaft. A door panel is mounted on the swing arm and is located at the dispensing port. The door panel is an arc-shaped plate.

[0012] Preferably, the switch assembly further includes a switch driver, which includes a push rod connected to the swing arm.

[0013] Preferably, the switch shaft is provided with several swing arms, and the limiting rod abuts against several swing arms simultaneously.

[0014] Preferably, the switch drive is a cylinder, the switch shaft has a gas passage inside, and the switch shaft has an air port.

[0015] Preferably, a feed inlet is installed above the spreading chamber, and a spiral distributor 18 is installed inside the spreading chamber.

[0016] Therefore, this utility model has the following beneficial effects: (1) the opening size of the spreading nozzle can be controlled to control the rate of spreading the crushed material; (2) the rate of spreading the crushed material can be adjusted without stopping the machine, thereby improving the efficiency of continuous construction. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of one embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of a support base in Embodiment 1 of this utility model.

[0019] Figure 3 This is a partial structural diagram of the switch limit component in Embodiment 2 of this utility model.

[0020] In the diagram: 1. Spreading chamber; 2. Left baffle; 3. Right baffle; 4. Limiting rod; 5. Limiting drive component; 6. Switch shaft; 7. Swing arm; 8. Door panel; 9. Switch drive component; 10. Switch drive mounting base; 11. Feed inlet; 12. Pipeline limiting plate; 13. Spreading roller; 14. Support base; 15. Base plate; 16. Adjusting plate; 17. Roller; 18. Spiral distributor. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1, as Figure 1-2 As shown, an adjustable spreading structure is used in mobile road construction equipment. The road construction equipment includes multiple road construction structures, and road spreading is one of the steps in the road construction process. The material spreading structure of this application is also one of the road construction structures. The material spreading structure is installed on a material spreading vehicle. While the material spreading vehicle moves along the construction track, the material spreading structure continuously spreads material onto the road surface.

[0023] This application includes a spreading chamber 1, the bottom of which is provided with a left baffle 2 and a right baffle 3, both of which are fixedly mounted on the frame of a material spreading vehicle. A spreading opening is formed between the left baffle 2 and the right baffle 3, the spreading opening being a shape that gradually narrows from top to bottom. A switch assembly is installed at the spreading opening, and the spreading chamber 1 also includes a switch limiting assembly, which includes a limiting rod 4 and a limiting drive component 5. Both the switch assembly and the switch limiting assembly are located outside the spreading chamber 1. The lower end of the left baffle 2 is located below the lower end of the right baffle 3, and the spreading opening is formed between the lower ends of the left baffle 2 and the lower ends of the right baffle 3.

[0024] The switch assembly includes a switch shaft 6 and several swing arms 7 mounted on the switch shaft 6. Both ends of the switch shaft 6 are mounted on shaft seats. The swing arms 7 rotate around the switch shaft 6. A door panel 8 is mounted on the outer side of each swing arm 7, located at the dispensing opening. The door panel 8 is an arc-shaped plate, with the center of its arc located at the axis of the switch shaft 6. The several swing arms 7 and the door panel 8 are equidistantly spaced along the axial direction of the switch shaft 6, thereby providing sufficient support rigidity along the length of the dispensing opening and preventing changes in the dispensing rate due to deformation of the door panel 8. The lower end of the right baffle 3 has an arc-shaped section that matches the shape of the door panel 8. The two are close to each other but have a certain gap, preferably 3-20mm. The switch assembly also includes a switch driver 9 and a switch driver mounting base 10. The switch driver mounting base 10 is fixed to the frame, and the switch driver 9 is rotatably connected to the switch driver mounting base 10. The switch drive component 9 can be a pneumatic cylinder or a hydraulic cylinder. In this embodiment, a pneumatic cylinder is used as the switch drive component 9. The switch drive component 9 includes a push rod connected to the swing arm 7. When the push rod of the switch drive component 9 extends, the swing arm 7 rotates counterclockwise, causing the door panel 8 to block the dispensing opening, thus closing the door. When the push rod of the switch drive component 9 retracts, the swing arm 7 rotates clockwise, causing the door panel 8 to move away from the dispensing opening, thus opening the door.

[0025] The switch limiting assembly includes a limiting rod 4 and a limiting drive component 5. The length direction of the limiting rod 4 is the same as the axial direction of the switch shaft 6. The swing arm 7 has a notch, and the limiting rod 4 abuts against the swing arm 7 at the notch, thereby limiting the swing arm 7 and the entire switch assembly. The limiting drive component 5 is a servo electric cylinder, and its length can be adjusted by servo control to control the position of the limiting rod 4. When the position of the limiting rod 4 changes, the stroke of all the swing arms 7 changes, and the stroke of each swing arm 7 is the same, thus ensuring that the opening width of the dispensing port is the same at different positions along its length.

[0026] The limiting rod 4 is also provided with a number of pipeline limiting plates 12 that correspond one-to-one with the switch driving component 9. The pipeline limiting plate 12 is provided with limiting holes. The switch shaft 6 is provided with a gas channel and an air port. The switch driving component 9 is connected to the air port on the switch shaft 6 through a gas pipe.

[0027] Below the spreading nozzle is a spreading roller 13, which is driven by a roller motor. During the spreading process, the roller motor drives the spreading roller 13 to rotate continuously, spreading the debris that falls onto the spreading roller 13 onto the road surface to be paved. The lower end of the left baffle 2 is located to the left of the vertical axis of symmetry of the spreading roller 13. That is to say, the debris falling at the spreading nozzle does not fall directly, but falls with the assistance of the spreading roller 13, which can improve the uniformity of the debris falling.

[0028] A support base 14 is provided below the spreading roller 13. Rollers 17 that contact the spreading roller 13 are mounted on the support base 14, with two rollers 17 corresponding to each spreading roller 13. The two rollers 17 are symmetrically arranged to support the spreading roller 13. The support base 14 includes a height adjustment structure, which comprises a base plate 15 and an adjusting plate 16. An adjusting stud is provided between the base plate 15 and the adjusting plate 16, and an adjusting nut that abuts against the adjusting plate 16 is mounted on the adjusting stud. The height of the adjusting plate 16 can be adjusted by turning the adjusting nut.

[0029] A feed inlet 11 is installed above the spreading chamber 1. A spiral distributor 18 is provided inside the spreading chamber 1. The spiral distributor 18 distributes the debris accumulated at the feed inlet 11 to various positions in the axial direction of the spiral distributor 18 by rotating, so that the amount of debris at different positions in the spreading chamber 1 is more uniform.

[0030] During operation, the material to be spread is first added through the feed inlet 11. As the auger spreader 18 rotates, the material accumulating at the feed inlet 11, exceeding the height of the bottom of the auger spreader 18, moves axially under its influence, thus evenly distributing the material within the spreading chamber 1. When spreading begins, the switch drive 9 rotates the swing arm 7, causing the door panel 8 to rotate clockwise, opening the spreading opening. The material falls from the spreading opening onto the spreading roller 13, which spreads the material onto the road surface as it rotates clockwise.

[0031] Example 2, as Figure 3 As shown, an adjustable spreading structure is used in mobile road construction equipment. The road construction equipment includes multiple road construction structures, and road spreading is one of the steps in the road construction process. The material spreading structure of this application is also one of the road construction structures. The material spreading structure is installed on a material spreading vehicle. While the material spreading vehicle moves along the construction track, the material spreading structure continuously spreads material onto the road surface.

[0032] This application includes a spreading chamber 1, the bottom of which is provided with a left baffle 2 and a right baffle 3, both of which are fixedly mounted on the frame of a material spreading vehicle. A spreading opening is formed between the left baffle 2 and the right baffle 3, the spreading opening being a shape that gradually narrows from top to bottom. A switch assembly is installed at the spreading opening, and the spreading chamber 1 also includes a switch limiting assembly, which includes a limiting rod 4 and a limiting drive component 5. Both the switch assembly and the switch limiting assembly are located outside the spreading chamber 1. The lower end of the left baffle 2 is located below the lower end of the right baffle 3, and the spreading opening is formed between the lower ends of the left baffle 2 and the lower ends of the right baffle 3.

[0033] The switch assembly includes a switch shaft 6 and several swing arms 7 mounted on the switch shaft 6. Both ends of the switch shaft 6 are mounted on shaft seats. The swing arms 7 rotate around the switch shaft 6. A door panel 8 is mounted on the outer side of each swing arm 7, located at the dispensing opening. The door panel 8 is an arc-shaped plate, with the center of its arc located at the axis of the switch shaft 6. The several swing arms 7 and the door panel 8 are equidistantly spaced along the axial direction of the switch shaft 6, thereby providing sufficient support rigidity along the length of the dispensing opening and preventing changes in the dispensing rate due to deformation of the door panel 8. The lower end of the right baffle 3 has an arc-shaped section that matches the shape of the door panel 8. The two are close to each other but have a certain gap, preferably 3-20mm. The switch assembly also includes a switch driver 9 and a switch driver mounting base 10. The switch driver mounting base 10 is fixed to the frame, and the switch driver 9 is rotatably connected to the switch driver mounting base 10. The switch drive component 9 can be a pneumatic cylinder or a hydraulic cylinder. In this embodiment, a pneumatic cylinder is used as the switch drive component 9. The switch drive component 9 includes a push rod connected to the swing arm 7. When the push rod of the switch drive component 9 extends, the swing arm 7 rotates counterclockwise, causing the door panel 8 to block the dispensing opening, thus closing the door. When the push rod of the switch drive component 9 retracts, the swing arm 7 rotates clockwise, causing the door panel 8 to move away from the dispensing opening, thus opening the door.

[0034] The switch limiting assembly includes a limiting rod 4 and a limiting drive component 5. The length direction of the limiting rod 4 is the same as the axial direction of the switch shaft 6. The limiting drive component 5 is a servo electric cylinder, and its length can be adjusted by servo control to control the position of the limiting rod 4. When the position of the limiting rod 4 changes, the stroke of all the swing arms 7 changes, and the stroke of each swing arm 7 is the same, thus ensuring that the opening width of the dispensing port is the same at different positions along the length direction. The extension and retraction direction of the limiting drive component 5 is horizontal, and the horizontal movement of the limiting rod 4 is driven by the left and right extension and retraction of the limiting drive component 5. The swing arm 7 is provided with a contact surface inclined at 20-50° relative to the horizontal direction. The limiting rod 4 abuts against the swing arm 7 at the contact surface, thereby limiting the swing arm 7 and the entire switch assembly.

[0035] The limiting rod 4 is also provided with a number of pipeline limiting plates 12 that correspond one-to-one with the switch driving component 9. The pipeline limiting plate 12 is provided with limiting holes. The switch shaft 6 is provided with a gas channel and an air port. The switch driving component 9 is connected to the air port on the switch shaft 6 through a gas pipe.

[0036] Below the spreading nozzle is a spreading roller 13, which is driven by a roller motor. During the spreading process, the roller motor drives the spreading roller 13 to rotate continuously, spreading the debris that falls onto the spreading roller 13 onto the road surface to be paved. The lower end of the left baffle 2 is located to the left of the vertical axis of symmetry of the spreading roller 13. That is to say, the debris falling at the spreading nozzle does not fall directly, but falls with the assistance of the spreading roller 13, which can improve the uniformity of the debris falling.

[0037] A support base 14 is provided below the spreading roller 13. Rollers 17 that contact the spreading roller 13 are mounted on the support base 14, with two rollers 17 corresponding to each spreading roller 13. The two rollers 17 are symmetrically arranged to support the spreading roller 13. The support base 14 includes a height adjustment structure, which comprises a base plate 15 and an adjusting plate 16. An adjusting stud is provided between the base plate 15 and the adjusting plate 16, and an adjusting nut that abuts against the adjusting plate 16 is mounted on the adjusting stud. The height of the adjusting plate 16 can be adjusted by turning the adjusting nut.

[0038] A feed inlet 11 is installed above the spreading chamber 1. A spiral distributor 18 is provided inside the spreading chamber 1. The spiral distributor 18 distributes the debris accumulated at the feed inlet 11 to various positions in the axial direction of the spiral distributor 18 by rotating, so that the amount of debris at different positions in the spreading chamber 1 is more uniform.

[0039] During operation, the material to be spread is first added through the feed inlet 11. As the auger spreader 18 rotates, the material accumulating at the feed inlet 11, exceeding the height of the bottom of the auger spreader 18, moves axially under its influence, thus evenly distributing the material within the spreading chamber 1. When spreading begins, the switch drive 9 rotates the swing arm 7, causing the door panel 8 to rotate clockwise, opening the spreading opening. The material falls from the spreading opening onto the spreading roller 13, which spreads the material onto the road surface as it rotates clockwise.

Claims

1. An adjustable dispensing structure, characterized in that, The device includes a dispensing chamber, the bottom of which is provided with a left baffle and a right baffle, and a dispensing opening is formed between the left baffle and the right baffle. A switch assembly is installed at the dispensing opening. The dispensing chamber also includes a switch limit assembly, which includes a limit rod and a limit drive component.

2. The adjustable spreading structure according to claim 1, characterized in that, Below the spreading nozzle is a spreading roller, which is driven by a roller motor.

3. The adjustable spreading structure according to claim 2, characterized in that, The lower end of the left baffle is located to the left of the vertical axis of symmetry of the spreading roller.

4. An adjustable spreading structure according to claim 2, characterized in that, A support base is provided below the spreading roller, and a roller that contacts the spreading roller is installed on the support base.

5. An adjustable spreading structure according to claim 4, characterized in that, A height adjustment structure is installed between the support base and the roller.

6. An adjustable spreading structure according to claim 1, characterized in that, The switch assembly includes a switch shaft and a swing arm mounted on the switch shaft. A door panel is mounted on the swing arm and is located at the dispensing port. The door panel is an arc-shaped plate.

7. An adjustable spreading structure according to claim 6, characterized in that, The switch assembly further includes a switch driver, which includes a push rod connected to the swing arm.

8. An adjustable spreading structure according to claim 6, characterized in that, The switch shaft is provided with several swing arms, and the limiting rod abuts against several swing arms at the same time.

9. An adjustable spreading structure according to claim 7, characterized in that, The switch drive is a cylinder, and the switch shaft has a gas passage and an air port.

10. An adjustable dispensing structure according to any one of claims 1-9, characterized in that, A feed inlet is installed above the spreading chamber, and a spiral spreader is installed inside the spreading chamber.

Images