Municipal old road milling device

Abstract

The utility model relates to the technical field of pavement maintenance, in particular to an old municipal road milling device which comprises a movable frame, a lifting type milling mechanism is connected to the movable frame, a fixed plate is fixedly connected to the upper end of the interior of the movable frame, a baffle is rotatably connected to the bottom end of the fixed plate, and a spring is fixedly connected to the upper end of the baffle. One end of the spring is fixedly connected to the movable frame. Splashing particles collide with the elastic cushion, the elastic cushion reduces the collision strength between the particles and the baffle, the elastic cushion extrudes the baffle after being collided, the baffle extrudes the spring, the spring shrinks after being pressed, the baffle can rotate after the spring shrinks, and therefore the collision strength between the baffle and the particles is reduced; the baffle plate is used for blocking splashed particles, so that the particles generated by milling of the lifting type milling mechanism are prevented from being splashed out, and personnel injury is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of road maintenance, in particular to an old road milling device for a municipal road. Background Art

[0002] Municipal roads refer to urban roads. In the construction of urban roads, asphalt concrete is generally used as the pavement material. The pavement generally serves for about ten years. After this period, the pavement has reached the design upper limit and it is necessary to scrape a layer of the old pavement and then lay a new surface layer to meet the use of municipal roads.

[0003] In the prior art, road milling is completed by personnel driving a milling machine. However, due to its large size, it is impossible to perform milling processing on corners and other locations and small-area construction environments. Generally, personnel push a small milling device to mill a small construction area. The milling mechanism drives a rotor equipped with a milling tool to rotate through mechanical transmission, allowing the high-speed rotating milling tool to contact the road surface to remove the old road surface layer. When the milling tool mills the road surface, the particles generated by the milling are splashed to the front side, and the splashed particles can easily cause injuries to personnel. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that particles generated by planing and milling splash toward the front side, and the splashed particles easily cause injuries to personnel, and proposes a milling device for old municipal roads.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A municipal road old road milling device is designed, including a mobile frame, wherein:

[0007] The movable frame is connected with a lifting milling mechanism, the inner upper end of the movable frame is fixedly connected with a fixed plate, the bottom end of the fixed plate is rotatably connected with a baffle, the upper end of the baffle is fixedly connected with a spring, one end of the spring is fixedly connected to the movable frame.

[0008] Preferably, a push rod is fixedly connected to the upper end of the movable frame.

[0009] Preferably, the baffle is an arc-shaped plate, and the concave surface of the baffle is arranged toward the lifting milling mechanism.

[0010] Preferably, an elastic pad is fixedly connected to the concave surface of the baffle.

[0011] Preferably, the lifting milling mechanism includes a movable frame, which can be slidably plugged into the mobile frame, and the upper end of the mobile frame is rotatably connected to a threaded rod for adjusting the height of the movable frame. The movable frame is fixedly connected to a motor, and the output end of the motor is fixedly connected to a rotating rod, and a plurality of milling cutters are connected to the rotating rod at equal intervals along the axial direction. The milling cutters are located in the mobile frame, and each of the milling cutters is provided with a debris removal hole.

[0012] Preferably, a protective frame is fixedly connected to the upper end of the concave surface of the baffle, an opening is provided at the bottom end of the protective frame, and a buffer chamber is provided between the protective frame and the concave surface of the baffle.

[0013] Preferably, the protective frame and the baffle are an integral structure.

[0014] The utility model provides a municipal road old road milling device, which has the following beneficial effects:

[0015] The flying particles collide with the elastic pad, which reduces the collision strength between the particles and the baffle. The elastic pad squeezes the baffle after being collided, and the baffle squeezes the spring. The spring contracts after being compressed, and the baffle can rotate after the spring contracts, thereby reducing the collision strength between the baffle and the particles. The baffle blocks the flying particles, avoiding the splashing of particles generated by the lifting milling mechanism, thereby preventing personal injury. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a municipal road old road milling device proposed by the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of a municipal road old road milling device proposed by the utility model;

[0018] Figure 3 It is a structural schematic diagram of a lifting type milling mechanism in a municipal road old road milling device proposed by the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the connection structure between a baffle and a protective frame in a municipal road old road milling device.

[0020] In the figure: 1. movable frame; 2. push rod; 3. lifting milling mechanism; 4. fixed plate; 5. baffle; 6. spring; 7. elastic pad; 8. protective frame; 9. buffer chamber; 31. movable frame; 32. threaded rod; 33. motor; 34. rotating rod; 35. milling cutter; 36. miscellaneous holes. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Example 1

[0023] Reference Figure 1-2 , a municipal road old road milling device, comprising a mobile frame 1, wherein:

[0024] A push rod 2 is fixedly connected to the upper end of the mobile frame 1, and a lifting milling mechanism 3 is connected to the mobile frame 1. A fixed plate 4 is fixedly connected to the inner upper end of the mobile frame 1, and a baffle 5 is rotatably connected to the bottom end of the fixed plate 4. A spring 6 is fixedly connected to the upper end of the baffle 5, and one end of the spring 6 is fixedly connected to the mobile frame 1. The baffle 5 is an arc-shaped plate, and the concave surface of the baffle 5 is arranged toward the lifting milling mechanism 3. An elastic pad 7 is fixedly connected to the concave surface of the baffle 5, and the elastic pad 7 is a rubber pad.

[0025] Working process: the push rod 2 pushes the moving frame 1 to move, and the moving frame 1 drives the lifting milling mechanism 3 to move. After the lifting milling mechanism 3 is started, it mills the road surface, and the particles generated by the milling of the lifting milling mechanism 3 splash to the front side, and the splashed particles collide with the elastic pad 7, and the elastic pad 7 reduces the collision strength between the particles and the baffle 5. After the elastic pad 7 is hit, it squeezes the baffle 5, and the baffle 5 squeezes the spring 6. The spring 6 shrinks after being compressed. After the spring 6 shrinks, the baffle 5 can rotate, thereby reducing the collision strength between the baffle 5 and the particles. The baffle 5 blocks the splashed particles to prevent the particles generated by the milling of the lifting milling mechanism 3 from splashing, thereby not causing personal injury.

[0026] Example 2

[0027] When the lifting milling mechanism 3 mills the road surface, the particles generated by the milling fall on the lifting milling mechanism 3. The lifting milling mechanism 3 rotates to throw out the particles. The thrown particles collide with the moving frame 1 and generate a large noise. Figure 3As another preferred embodiment of the utility model, the difference from the embodiment 1 is that the lifting milling mechanism 3 includes a movable frame 31, the movable frame 31 can be slidably plugged into the mobile frame 1, the upper end of the mobile frame 1 is rotatably connected to a threaded rod 32 for adjusting the height of the movable frame 31, the movable frame 31 is fixedly connected to a motor 33, the output end of the motor 33 is fixedly connected to a rotating rod 34, and the rotating rod 34 is connected to a plurality of milling cutters 35 at equal intervals along the axis direction, the milling cutters 35 are located in the mobile frame 1, and each milling cutter 35 is connected to the movable frame 1. 5 are provided with debris discharge holes 36, the threaded rod 32 rotates to drive the movable frame 31 to move downward, the movable frame 31 drives the milling cutter 35 to move downward, so that the milling cutter 35 contacts the road surface, the motor 33 starts to drive the rotating rod 34 to rotate, the rotating rod 34 drives the milling cutter 35 to rotate, the milling cutter 35 rotates to mill the road surface, the particles generated by the milling fall on the milling cutter 35, the particles on the milling cutter 35 are released from the debris discharge holes 36, the particles will not be thrown out during the rotation of the milling cutter 35, so no noise will be generated.

[0028] Example 3

[0029] When the particles collide with the baffle 5, a portion of the particles after the collision rolls along the upper end of the baffle 5, and the particles rolling down from the upper end move downward under their own gravity and collide with the lifting milling mechanism 3, causing damage to the lifting milling mechanism 3. Figure 4 As another preferred embodiment of the utility model, on the basis of embodiment 1, a protective frame 8 is fixedly connected to the upper end of the concave surface of the baffle 5, the protective frame 8 and the baffle 5 are an integrated structure, an opening is provided at the bottom end of the protective frame 8, and a buffer chamber 9 is provided between the protective frame 8 and the concave surface of the baffle 5. The particles rolling along the upper end of the baffle 5 enter the buffer chamber 9, and the protective frame 8 blocks the particles. The particles after being blocked are released from the bottom opening of the protective frame 8, thereby preventing the particles from colliding with the lifting milling mechanism 3 and causing no damage to the lifting milling mechanism 3.

[0030] 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A municipal road old road milling device, characterized in that: It comprises a mobile frame (1), wherein: The movable frame (1) is connected to a lifting milling mechanism (3); the upper end of the inner part of the movable frame (1) is fixedly connected to a fixed plate (4); the bottom end of the fixed plate (4) is rotatably connected to a baffle (5); the upper end of the baffle (5) is fixedly connected to a spring (6); one end of the spring (6) is fixedly connected to the movable frame (1).

2. The old road milling device for municipal roads according to claim 1, characterized in that: The upper end of the movable frame (1) is fixedly connected with a push rod (2).

3. The municipal road old road milling device according to claim 1, characterized in that: The baffle plate (5) is an arc-shaped plate, and the concave surface of the baffle plate (5) is arranged toward the lifting type milling mechanism (3).

4. The old road milling device for municipal roads according to claim 3 is characterized in that: An elastic pad (7) is fixedly connected to the concave surface of the baffle (5).

5. The old road milling device for municipal roads according to claim 1, characterized in that: The lifting milling mechanism (3) comprises a movable frame (31), the movable frame (31) can be slidably plugged into the movable frame (1), the upper end of the movable frame (1) is rotatably connected to a threaded rod (32) for adjusting the height of the movable frame (31), the movable frame (31) is fixedly connected to a motor (33), the output end of the motor (33) is fixedly connected to a rotating rod (34), a plurality of milling cutters (35) are connected to the rotating rod (34) at equal intervals along the axis direction, the milling cutters (35) are located in the movable frame (1), and each of the milling cutters (35) is provided with a debris removal hole (36).

6. The municipal road old road milling device according to claim 1, characterized in that: A protective frame (8) is fixedly connected to the upper end of the concave surface of the baffle (5), an opening is provided at the bottom end of the protective frame (8), and a buffer chamber (9) is provided between the protective frame (8) and the concave surface of the baffle (5).

7. The old road milling device for municipal roads according to claim 6, characterized in that: The protective frame (8) and the baffle (5) are an integrated structure.

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