Discharging device for road milling machine

Abstract

The utility model discloses a discharge device for a road milling machine, which comprises a discharge plate and a mounting base, the discharge plate is fastened on the mounting base, the mounting base is mounted on the outer surface of a milling drum roller of the road milling machine, the front surface of the discharge plate is provided with a discharge surface, the discharge surface is arranged in a multi-layer step shape, and the discharge plate is provided with a plurality of discharge holes. At least one positioning block is arranged on the back face of the discharging plate, and the back face of the discharging plate is matched with the installation base. According to the utility model, a positioning mode that a plurality of positioning surfaces are attached to and crossed with a plurality of notch surfaces is adopted, and the six degrees of freedom of up, down, left, right, front and back are all limited, so that the connection between the discharging plate and the mounting base is quite stable, and the durable rigid connection can still be kept under violent vibration and impact. And the multiple layers of large-area discharging surfaces can continuously shovel up the crushed particle bodies on the road surface and throw the crushed particle bodies to the associated specified conveying belt.

Description

Technical Field

[0001] This utility model belongs to the technical field of mechanical operation tools for construction and highway engineering, and specifically relates to a material discharge device for a road milling machine. Background Technology

[0002] Road milling machines are one of the main types of machinery used in asphalt pavement maintenance and construction, and a key piece of equipment for asphalt concrete pavement maintenance. They are primarily used for excavating and resurfacing asphalt concrete surfaces on highways, urban roads, airports, and freight yards. They can also be used to remove defects such as ruts, oil ripples, cracks, and other imperfections. Furthermore, they can be used to excavate potholes and trenches, as well as to roughen cement pavements and mill uneven surfaces. Milling damaged old pavement with a road milling machine before laying a new surface layer is a highly economical and modern maintenance method. Due to its high efficiency, simple construction process, easy control of milling depth, convenient and flexible operation, good maneuverability, and the ability to directly recycle the milled material, it is widely used in urban municipal roads and highway maintenance projects.

[0003] The milling chamber of a milling machine contains a rapidly rotating milling drum. Several cutting tools are fixed to the surface of the drum. The old material particles produced after milling the road surface need to be collected and transported using a specialized device, typically a discharge plate. Because the discharge plate continuously throws hard road surface particles onto a designated conveyor belt during operation, with a conveying capacity of several hundred cubic meters per hour, the rate of wear is astonishing. Furthermore, the mechanical impact of the road surface particles as the milling drum rotates severely tests the stability and fixation of the discharge plate.

[0004] Therefore, a material discharge device for road milling machines with a longer service life is urgently needed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a material discharge device for road milling machines.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] This utility model provides a material discharge device for a road milling machine, including a material discharge plate and a mounting base. The material discharge plate is fastened to the mounting base, and the mounting base is installed on the outer surface of the milling drum of the road milling machine. The front of the material discharge plate is provided with a material discharge surface, which is arranged in a multi-layer stepped manner. The back of the material discharge plate is provided with at least one positioning block, and the back of the material discharge plate matches the mounting base.

[0008] Preferably, the discharge plate is in the form of a cuboid structure, and the outer surface of the discharge surface is provided with a first set of discharge surfaces and a second set of discharge surfaces. The first set of discharge surfaces and the second set of discharge surfaces extend outward on the discharge surface to a certain height, and the second set of discharge surfaces is higher than the first set of discharge surfaces. The first set of discharge surfaces includes a first discharge surface and a second discharge surface. The first discharge surface and the second discharge surface are symmetrically arranged in the width direction of the discharge surface, and their opposing inner surfaces are multiple continuous curved surface structures.

[0009] Preferably, the second set of discharge surfaces includes a third discharge surface, a fourth discharge surface, a fifth discharge surface, and a sixth discharge surface located at the four apex corners of the discharge surface, wherein the inner surfaces of the third discharge surface, the fourth discharge surface, the fifth discharge surface, and the sixth discharge surface are straight-line arc surface structures.

[0010] Preferably, an anti-wear component is also provided, which is disposed on the outer surface of the third, fourth, fifth and sixth material discharge surfaces, and the anti-wear component has a pointed top.

[0011] Preferably, the positioning block extends outward at a set height on the back of the discharge plate to form a frustum-shaped or rectangular frustum-shaped structure.

[0012] Preferably, the positioning blocks are set individually and independently, and there is no direct connection between multiple positioning blocks.

[0013] Preferably, the bottom perimeter of the positioning block is greater than its top perimeter.

[0014] Preferably, the positioning blocks are arranged in a circular or rectangular array, maintaining a set distance and space between them.

[0015] Preferably, the outer end faces of the positioning blocks are on the same arc surface.

[0016] Preferably, the discharge plate is provided with at least one connecting surface that penetrates the discharge plate, and the connecting surface is used to rigidly connect the discharge plate to the mounting base.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] This invention employs a multi-layered discharge surface design, significantly increasing the working area. Multiple transition surfaces feature a slope design, reducing the mechanical impact of waste particles during operation and thus lowering the loss of mechanical driving force. The discharge device for road milling machines provided by this invention has an extremely long service life. The large area and multi-angle mating surfaces increase stability, allowing for easy and quick replacement of the discharge plate, improving operational efficiency and quality, and greatly saving construction costs. Attached Figure Description

[0019] Figure 1 This is a front view of the discharge plate in the discharge device for a road milling machine according to the present invention;

[0020] Figure 2 This is a top view of the discharge plate in the discharge device for a road milling machine according to the present invention;

[0021] Figure 3 This is a front perspective view of the discharge plate in the discharge device for a road milling machine according to the present invention;

[0022] Figure 4 This is a front view of the back of the discharge plate in the discharge device for a road milling machine according to the present invention;

[0023] Figure 5 This is a three-dimensional view of the back of the discharge plate in the discharge device for a road milling machine according to the present invention;

[0024] Figure 6 This is a front perspective view of the mounting base in the material discharge device for a road milling machine according to the present invention;

[0025] Figure 7 This is an overall side sectional view of a discharge device for a road milling machine according to the present invention;

[0026] Figure 8 This is a three-dimensional rear view of the material discharge device for a road milling machine according to the present invention;

[0027] Figure 9 This is a front view of a discharge device for a road milling machine installed on a milling drum according to the present invention;

[0028] Figure 10 for Figure 9 Side view. Detailed Implementation

[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] like Figures 1 to 10 As shown, this embodiment provides a material discharge device for a road milling machine, including a discharge plate 10 and a mounting base 20. Both the discharge plate 10 and the mounting base 20 are forged metal products. The discharge plate 10 is fastened to the mounting base 20, which is mounted on the outer surface of the milling drum of the road milling machine. The discharge plate 10 has a rectangular parallelepiped structure. The front side 16.1 of the discharge plate has a discharge surface 11, which is arranged in a multi-layered stepped pattern. The back side 16 of the discharge plate has four positioning blocks, and the back side 16 of the discharge plate matches the mounting base 20.

[0033] Specifically, the outer surface of the discharge surface 11 is provided with a first set of discharge surfaces and a second set of discharge surfaces. The discharge surface 11 is located at the bottom layer, and the first set of discharge surfaces is along the movement direction M ( Figure 2 Increase the height; the second set of discharge surfaces is increased along the direction of movement M based on the first set of discharge surfaces. Figure 2 The first set of discharge surfaces is heightened on top of the first set, essentially adding a barrier. This increases the volume of wear-resistant material and improves the material shoveling and catching performance. The second set of discharge surfaces is heightened again on top of the first set, increasing the thickness and volume of wear-resistant material in this most wear-prone area. This achieves a similar effect to the first set of discharge surfaces while extending the overall service life of the discharge plate. Additionally, the outer surface of discharge surface 11 is provided with multiple triangular protrusions to increase wear resistance and structural strength.

[0034] like Figure 1 and Figure 3 As shown, the first set of discharge surfaces includes a first discharge surface 11.5 and a second discharge surface 11.6. The first discharge surface 11.5 and the second discharge surface 11.6 are symmetrically arranged in the width direction of the discharge surface, and their inner surfaces opposite each other are multiple continuous curved surface structures. The curved surface structures can increase the stress and working surface area, enhance wear resistance, and improve structural strength.

[0035] like Figure 1 and Figure 3As shown, the second set of discharge surfaces includes a third discharge surface 11.1, a fourth discharge surface 11.2, a fifth discharge surface 11.3, and a sixth discharge surface 11.4 located at the four corners of the discharge surface. The inner surfaces of the third discharge surface 11.1, the fourth discharge surface 11.2, the fifth discharge surface 11.3, and the sixth discharge surface 11.4 opposite each other are straight arc surfaces. A first transition surface 11.1.1, a second transition surface 11.2.2, a third transition surface 11.3.3, and a fourth transition surface 11.4.4 are respectively provided between the third discharge surface 11.1, the fourth discharge surface 11.2, the fifth discharge surface 11.3, and the sixth discharge surface 11.4 and the discharge surface 11. The transition surfaces are sloped structures.

[0036] like Figure 1 and Figure 3 As shown, wear-resistant components made of hard alloy material are provided on the outer surfaces of the third discharge surface 11.1, the fourth discharge surface 11.2, the fifth discharge surface 11.3, and the sixth discharge surface 11.4. These wear-resistant components include a first wear-resistant component 30, a second wear-resistant component 31, a third wear-resistant component 32, and a fourth wear-resistant component 33. The discharge plate 10 typically has its main working surfaces at its four corners, resulting in extremely rapid wear. The provision of multiple wear-resistant components here, due to their significantly higher hardness than the main body of the discharge plate 10, greatly extends the service life of the discharge plate 10. Furthermore, the wear-resistant components are designed with pointed tops to assist in breaking road waste particles into smaller particles during operation, facilitating better material discharge and transportation.

[0037] like Figure 1 As shown, the discharge plate 10 has two through-plate connecting surfaces, which are used to rigidly connect the discharge plate 10 to the mounting base 20. The connecting surfaces include a first connecting surface 17 and a second connecting surface 17.1. The first connecting surface 17 and the second connecting surface 17.1 have hexagonal holes and circular holes respectively from the front to the back of the discharge plate, which facilitates the installation of bolts.

[0038] like Figure 4 and Figure 5As shown, the positioning blocks extend outwards to a predetermined height on the back side 16 of the discharge plate, forming a rectangular platform-like structure. Each positioning block is independently installed, with no direct connection between them. The bottom perimeter of each positioning block is greater than its top perimeter. The positioning blocks are arranged in a rectangular array, maintaining a predetermined distance and space between them. Specifically, the positioning blocks include a first positioning block 12, a second positioning block 13, a third positioning block 14, and a fourth positioning block 15. The first positioning block 12 includes a first positioning surface 12.1, a second positioning surface 12.2, a third positioning surface 12.3, a fourth positioning surface 12.4, and a fifth positioning surface 12.5; the second positioning block 13 includes a sixth positioning surface 13.1, a seventh positioning surface 13.2, an eighth positioning surface 13.3, a ninth positioning surface 13.4, and a tenth positioning surface 13.5; the third positioning block 14 includes an eleventh positioning surface 14.1, a twelfth positioning surface 14.2, a thirteenth positioning surface 14.3, a fourteenth positioning surface 14.4, and a fifteenth positioning surface 14.5; the fourth positioning block 15 includes a sixteenth positioning surface 15.1, a seventeenth positioning surface 15.2, an eighteenth positioning surface 15.3, a nineteenth positioning surface 15.4, and a twentieth positioning surface 15.5. The fifth positioning surface 12.5, the tenth positioning surface 13.5, the fifteenth positioning surface 14.5, and the twentieth positioning surface 15.5 are on the same arc surface, thereby increasing the support performance on both sides of the positioning block.

[0039] like Figure 6 As shown, the mounting base 20 is provided with a first slot 22, a second slot 23, a third slot 24, and a fourth slot 25. The first slot 22 has a first slot surface 22.1, a second slot surface 22.2, a third slot surface 22.3, a fourth slot surface 22.4, and a fifth slot surface 22.5; the second slot 23 has a sixth slot surface 23.1, a seventh slot surface 23.2, an eighth slot surface 23.3, and a ninth slot surface. 23.4, the tenth slot surface 23.5; the third slot 24 includes the eleventh slot surface 24.1, the twelfth slot surface 24.2, the thirteenth slot surface 24.3, the fourteenth slot surface 24.4, and the fifteenth slot surface 24.5; the fourth slot 25 includes the sixteenth slot surface 25.1, the seventeenth slot surface 25.2, the eighteenth slot surface 25.3, the nineteenth slot surface 25.4, and the twentieth slot surface 25.5.

[0040] The working principle of this embodiment will be further explained below:

[0041] like Figure 7 and Figure 8As shown, the mounting base 20 is used to fix and support the material discharge plate 10, and the first positioning block 12, the second positioning block 13, the third positioning block 14, and the fourth positioning block 15 on the material discharge plate are respectively matched and assembled with the first slot 22, the second slot 23, the third slot 24, and the fourth slot 25 on the mounting base 20. Bolt 40 passes through the first connecting surface 17 and the second connecting surface 17.1 of the discharge plate 10, and is connected in series with the first fixing hole 26 and the second fixing hole 26.1 of the mounting base 20, so that the back surface 16 of the discharge plate 20 is in contact with the force-bearing surface 28 of the mounting base 20. Then, the bolt 40 is locked with the fastening nut 50, and the fastening nut 50 presses the rear surface 29 of the mounting base 20. In the above process, 20 positioning surfaces are in contact with 20 slot surfaces. The cross-shaped positioning method restricts all six degrees of freedom: up, down, left, right, front, and back. Therefore, the connection between the discharge plate 10 and the mounting base 20 is quite stable and can maintain a durable rigid connection even under severe vibration and impact. Furthermore, the first positioning block 12, the second positioning block 13, the third positioning block 14, and the fourth positioning block 15 are symmetrical with respect to the center of the discharge plate. The design of the discharge plate 10 allows it to fit and be installed with the mounting base 20 after rotating 180 degrees, which greatly extends the service life of the discharge plate 10.

[0042] like Figure 9 and Figure 10 As shown, the discharge plate and the mounting base are in contact with the milling drum surface 61 through the mating surface 21 of the mounting base. The bottom ring surface 27 is welded and fixed to the milling drum surface 61. The milling drum 60 rotates rapidly around the center O along the rotation direction M. The discharge plate 10 obtains working transport power in this rotational motion. The discharge surface 11, the first discharge surface 11.5, the second discharge surface 11.6, the third discharge surface 11.1, the fourth discharge surface 11.2, the fifth discharge surface 11.3, and the sixth discharge surface 11.4 form a multi-layer large-area discharge surface, which can continuously scoop up the crushed particles on the road surface and throw them onto the associated designated conveyor belt. It has stable performance and high working efficiency.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A material discharging device for a road milling machine, comprising a material discharging plate (10) and a mounting base (20), the material discharging plate (10) being fastened to the mounting base (20), the mounting base (20) being mounted on the outer surface of a milling drum of the road milling machine, characterized in that, The front surface (16.1) of the discharge plate is provided with a discharge surface (11), which is arranged in multiple layers in a stepped manner, and the back surface (16) of the discharge plate is provided with at least one positioning block, and the back surface (16) of the discharge plate is matched with a mounting base (20).

2. A material discharge device for a road milling machine according to claim 1, characterized in that The outer surface of the discharge surface (11) is provided with a first group of discharge surfaces and a second group of discharge surfaces, which extend outward on the discharge surface (11) by a certain height, and the second group of discharge surfaces is higher than the first group of discharge surfaces; the first group of discharge surfaces includes a first discharge surface (11.5) and a second discharge surface (11.6), which are symmetrically arranged in the width direction of the discharge surface and have a plurality of continuous curved surface structures on the opposite inner sides.

3. A material discharge device for a road milling machine according to claim 2, characterized in that The second group of discharge surfaces includes a third discharge surface (11.1), a fourth discharge surface (11.2), a fifth discharge surface (11.3), and a sixth discharge surface (11.4) arranged at the four top corners of the discharge surface, and the opposite inner sides of the third discharge surface (11.1), the fourth discharge surface (11.2), the fifth discharge surface (11.3), and the sixth discharge surface (11.4) are linear arc surface structures.

4. A material discharge device for a road milling machine according to claim 3, characterized in that An anti-wear component is also provided on the outer surface of the third discharge surface (11.1), the fourth discharge surface (11.2), the fifth discharge surface (11.3), and the sixth discharge surface (11.4), and the anti-wear component has a top pointed shape.

5. The apparatus according to claim 1, wherein The positioning block extends outward on the back surface (16) of the discharge plate by a certain height, forming a circular or rectangular table structure.

6. A material discharge device for a road milling machine according to claim 5, characterized in that The positioning block is arranged independently, and there is no direct connection between multiple positioning blocks.

7. A material discharge device for a road milling machine according to claim 6, characterized in that The bottom circumference of the positioning block is greater than the top circumference.

8. A material discharge device for a road milling machine according to claim 7, characterized in that The positioning blocks are arranged in a circular or rectangular array, maintaining a certain distance and space between each other.

9. A material discharge device for a road milling machine according to claim 8, characterized in that The outer end surface of the positioning block is on the same arc surface.

10. The material discharge apparatus for a road milling machine according to claim 1, characterized by The discharge plate (10) is provided with at least one through communication surface, which is used for rigidly connecting the discharge plate (10) and the mounting base (20).

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