Lateral discharging structure of milling machine and milling bin with same

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a milling machine side discharging structure and a milling bin with the same, the milling machine side discharging structure comprises a rear cover door and a rear scraper, the rear cover door is fixedly installed behind the milling bin in a bolted mode, the rear scraper is arranged on the rear side of the rear cover door in a sliding and clamping mode, and the rear scraper is connected with the rear cover door in a bolted mode. N main sliding guide pieces are arranged on the rear side of the rear scraper blade, lateral sliding guide pieces are symmetrically installed on the left side and the right side of the rear scraper blade respectively, the rear scraper blade is connected to the rear side of the rear cover door in a sliding and clamping mode through the main sliding guide pieces and the main sliding guide pieces on the two sides, and a material guide unit is arranged below the main sliding guide pieces. According to the structure disclosed by the utility model, the milling bin can be sealed, and waste is prevented from splashing; meanwhile, directional centralized recovery of waste materials can be achieved through a scraping and side discharging structure; the intensity of subsequent cleaning operation is reduced, and the timeliness requirement of the cleaning operation is lowered; and reasonable and sufficient operation time and space are vacated for cleaning equipment and personnel.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, in particular to a side discharge structure of a milling machine and a milling bin with the structure. Background Technique

[0002] At present, small milling machines, especially 0.5-meter milling machines, are mainly divided into two types: those without a feeding belt and those with a feeding belt. Among them, the type without a feeding belt usually adopts a side-turning rear cover door structure or an upward-turning rear cover door structure to enclose the rear of the milling bin to form a closed bin to prevent the milling waste from splashing. Its specific structure is as Figure 1 shown, where A is the transfer structure and B is the rear cover door.

[0003] For the type of milling machine without a feeding belt, in order to facilitate subsequent operations, it is necessary to collect the waste left on the (milled) road surface after the operation. Usually, after milling, a sweeper or a forklift is immediately used to carry out the cleaning and recycling operation.

[0004] This method requires that the cleaning must be carried out in a timely manner. Therefore, it will cause a certain pressure on the cleaning equipment and the staff.

[0005] At the same time, the milled waste is concentrated in a 0.5-meter-wide pit formed after milling. For subsequent cleaning operations, there are also problems such as it being difficult to clean thoroughly.

[0006] Therefore, the utility model optimizes and improves the existing side discharge structure of the milling machine, and specially proposes a new side discharge structure of the milling machine and its milling bin to better solve the problems existing in the prior art. Content of the Utility Model

[0007] To solve one of the above technical problems, the utility model proposes a new side discharge structure of the rear cover door of a non-feeding milling machine for a milling machine, which can not only realize the enclosure of the milling bin to prevent waste from splashing, but also realize the directional centralized recovery of waste through the scraping and side discharge structures, reduce the intensity of subsequent cleaning operations, and reduce the timeliness requirements for cleaning operations, so as to free up reasonable and sufficient operation time and space for the cleaning equipment and personnel. The technical solution adopted is:

[0008] A side discharge structure of a milling machine, including a rear cover door and a rear scraper. The rear cover door is bolted and fixedly installed at the rear of the milling bin. The rear scraper is slidably clamped at the rear side of the rear cover door. N main sliding guides are arranged at the rear side of the rear scraper, and lateral sliding guides are symmetrically installed on the left and right sides of the rear scraper respectively. The rear scraper is slidably clamped at the rear side of the rear cover door through the main sliding guides and the lateral sliding guides on both sides. In the working state, the rear scraper floats freely up and down with the change of cutting depth and scrapes materials by its own weight or external force. A material guiding unit is arranged below the main sliding guides.

[0009] The main sliding guides include main chutes vertically arranged at the rear side of the rear scraper. Several central bolts are fitted in the main chutes. The front ends of the central bolts are fixedly installed on the rear cover door. A middle sliding seat is fitted at the rear side of the rear scraper. The front side of the middle sliding seat abuts against the rear scraper. The middle sliding seat is threadedly connected with the corresponding central bolts through the screw holes on it. When the rear scraper moves up and down, the main chutes can slide relatively with the central bolts.

[0010] The number of the main sliding guides is 1.

[0011] The lateral sliding guides include lateral chutes vertically arranged on one side of the rear scraper. Several lateral bolts are fitted in the lateral chutes. The inner ends of the central bolts are fixedly installed on one side of the rear cover door. A side protective shell is arranged on the outer side of the lower part of the lateral chutes.

[0012] The material guiding unit includes a left material guiding component and a right material guiding component respectively arranged at the left and right sides of the rear side of the rear scraper at intervals below the main sliding guides. The left material guiding component and the right material guiding component are independent of each other and do not interfere with each other in the working state.

[0013] The left material guiding component includes a left material guiding door installed at the position of the material guiding hole on the rear side of the rear scraper. One side of the left material guiding door is hinged through a hinge and the other side is detachably fixed on the rear scraper through a lock.

[0014] The right material guiding component includes a right material guiding door installed at the position of the material guiding hole on the rear side of the rear scraper. One side of the right material guiding door is hinged through a hinge and the other side is detachably fixed on the rear scraper through a lock.

[0015] The material guiding unit includes a material guiding pipe fitted and installed at the position of the material guiding channel. Both ends of the material guiding pipe are open and the inner end of the material guiding pipe is connected with the inside of the milling bin. The right end of the material guiding pipe is movably hinged on the rear scraper and can rotate around a vertical axis.

[0016] The number of the main sliding guides is two, and the two main sliding guides are symmetrically arranged; on the rear scraper outside the main chute of each main sliding guide, a main protective shell is fixedly covered; a floating oil cylinder is vertically arranged at the rear side of the rear scraper, the upper end of the floating oil cylinder is fixed on the rear cover door, and the lower end of the piston rod of the floating oil cylinder is connected to the rear scraper.

[0017] The material guiding unit includes a left material guiding component and a right material guiding component which are respectively arranged on the left and right sides of the rear side surface of the rear scraper at intervals below the main sliding guide; the left material guiding component and the right material guiding component are independent of each other and do not interfere with each other in the working state.

[0018] The left material guiding component includes a left material guiding door installed at the position of the material guiding hole on the rear side surface of the rear scraper, one side of the left material guiding door is hinged through a hinge, and the other side is detachably fixed on the rear scraper through a lock.

[0019] The right material guiding component includes a right material guiding door installed at the position of the material guiding hole on the rear side surface of the rear scraper, one side of the right material guiding door is hinged through a hinge, and the other side is detachably fixed on the rear scraper through a lock.

[0020] The lateral sliding guide includes a lateral limiting plate grounded on the rear side of the rear scraper, and the lateral limiting plate is fixed on the milling chamber through fastening bolts.

[0021] The material guiding unit includes a material guiding pipe installed in cooperation at the position of the material guiding channel, both ends of the material guiding pipe are open, the inner end of the material guiding pipe is communicated with the inside of the milling chamber, and the right end of the material guiding pipe is movably hinged on the rear scraper and can rotate around a vertical axis.

[0022] The lateral sliding guide includes a lateral limiting plate grounded on the rear side of the rear scraper, and the lateral limiting plate is fixed on the milling chamber through fastening bolts.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] 1. The present utility model designs a structure which is simple, easy to manufacture, convenient to disassemble and assemble, and can realize the quick rotation and opening structure of the right side plate of the milling chamber.

[0025] 2. The structure in the present utility model can not only realize the enclosure of the milling chamber to prevent waste from splashing, but also realize the directional centralized recovery of waste through the scraping and side discharging structures; reduce the intensity of subsequent cleaning operations and the timeliness requirements of cleaning operations; and create reasonable and sufficient operation time and space for cleaning equipment and personnel.

[0026] 3. When the milling bin in the present utility model is working, it can achieve stable up-and-down lifting by relying on its own weight or the power of the floating oil cylinder, and can be stably constrained by the sliding guiding members on both sides and in the middle of the side discharge structure of the milling machine during the lifting process.

[0027] 4. By setting two guiding structures in the form of flat doors, the smoothness of material guiding can be ensured; controlling the number of open doors can control the speed of material guiding.

[0028] 5. In addition, a rotating guiding structure is also set in the present utility model. By rotating around the vertical axis, the opening of the discharge guiding can be controlled. At the same time, controlling the rotation angle can effectively control the direction of the diversion, and the controllability is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn to scale.

[0030] Figure 1 It is a schematic diagram of the conventional rear cover door structure of the 0.5-meter milling machine in the prior art.

[0031] Figure 2 It is a schematic diagram of the structure of Embodiment 1 of the present utility model.

[0032] Figure 3 It is a schematic diagram of the structure of Embodiment 2 of the present utility model.

[0033] Figure 4 It is a schematic diagram of the structure of Embodiment 3 of the present utility model.

[0034] Figure 5 It is a schematic diagram of the structure of Embodiment 4 of the present utility model.

[0035] In the figure, 1. Rear cover door; 2. Rear scraper; 3. Main chute; 4. Central bolt; 5. Middle sliding seat; 6. Lateral chute; 7. Lateral bolt; 8. Side protective shell; 9. Left guiding door; 10. Right guiding door; 11. Guiding pipe; 12. Floating oil cylinder; 13. Lateral limiting plate; 14. Main protective shell. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following will describe in detail the embodiments of the technical solutions of the present utility model in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, so they are only examples and cannot be used to limit the protection scope of the present utility model. The specific structure of the present utility model is as Figures 2 - 5 shown in the figure.

[0037] Embodiment 1: A side discharge structure of a milling machine, including a rear cover door 1 and a rear scraper 2. The rear cover door 1 is bolted and fixedly installed at the rear of the milling bin. The rear scraper 2 is slidably clamped and arranged at the rear side of the rear cover door 1. N main sliding guides are arranged at the rear side of the rear scraper 2. Lateral sliding guides are symmetrically installed on the left and right sides of the rear scraper 2 respectively. The rear scraper 2 is slidably clamped at the rear side of the rear cover door 1 through the main sliding guides and the main sliding guides on both sides. In the working state, the rear scraper 2 realizes free up and down floating with the change of cutting depth, and relies on its own weight or external force to realize scraping. A material guiding unit is arranged below the main sliding guides.

[0038] The rear cover door 1 is fixedly installed at the rear of the milling bin by bolts, and the rear scraper 2 is installed on the rear cover door 1 through the main sliding guides and the lateral sliding guides. In this way, the function of the rear scraper 2 moving up and down along the ground for scraping can be realized. At the same time, the material guiding unit under the rear scraper 2 can be selected to be opened or closed according to specific construction requirements to meet the discharge requirements of milling construction.

[0039] In any of the above solutions, preferably, the main sliding guide includes a main chute 3 vertically arranged at the rear side of the rear scraper 2. A number of central bolts 4 are fitted in the main chute 3. The front ends of the central bolts 4 are fixedly installed on the rear cover door 1. A middle sliding seat 5 is fitted at the rear side of the rear scraper 2. The front side of the middle sliding seat 5 abuts against the rear scraper 2. The middle sliding seat 5 is threadedly connected to the corresponding central bolts 4 through the screw holes thereon. When the rear scraper 2 moves up and down, the main chute 3 can slide relatively with the central bolts 4.

[0040] When the main sliding guide works, it moves as a whole following the up and down movement of the rear scraper 2. Under the cooperation of the central bolt 4 and the main chute 3, the stability during up and down sliding can be ensured, playing a good limiting role. At the same time, with the abutting effect of the middle sliding seat 5 and the rear scraper 2, the smoothness of the whole structure in the front and rear directions can be ensured.

[0041] In any of the above solutions, preferably, the number of the main sliding guides is 1.

[0042] In any of the above solutions, preferably, the lateral sliding guide includes a lateral chute 6 vertically arranged at one side of the rear scraper 2. A number of lateral bolts 7 are fitted in the lateral chute 6. The inner ends of the central bolts 4 are fixedly installed on one side of the rear cover door 1. A side protection shell 8 is arranged at the outer side of the lower part of the lateral chute 6.

[0043] The lateral sliding guide relies on the lateral bolt 7 and the lateral chute 6 to achieve relative sliding limit in the vertical direction, and at the same time cooperates with the main sliding guide in the middle to play a further constraining role.

[0044] In any of the above solutions, preferably, the material guiding unit includes a left material guiding component and a right material guiding component which are respectively arranged on the left and right sides of the rear side of the rear scraper 2 at intervals below the main sliding guide; the left material guiding component and the right material guiding component are independent of each other and do not interfere with each other in the working state.

[0045] In any of the above solutions, preferably, the left material guiding component includes a left material guiding door 9 installed at the position of the material guiding hole on the rear side of the rear scraper 2. One side of the left material guiding door 9 is hinged through a hinge, and the other side is detachably fixed on the rear scraper 2 through a lock.

[0046] The right material guiding component includes a right material guiding door 10 installed at the position of the material guiding hole on the rear side of the rear scraper 2. One side of the right material guiding door 10 is hinged through a hinge, and the other side is detachably fixed on the rear scraper 2 through a lock.

[0047] The material guiding unit in this embodiment is composed of a left material guiding component and a right material guiding component. During operation, different discharging effects can be achieved by controlling the opening and closing of the left material guiding component and the right material guiding component.

[0048] Embodiment 2: A side discharging structure of a milling machine, including a rear cover door 1 and a rear scraper 2. The rear cover door 1 is bolted and fixedly installed at the rear of the milling bin. The rear scraper 2 is slidably clamped at the rear side of the rear cover door 1. N main sliding guides are arranged at the rear side of the rear scraper 2. Lateral sliding guides are symmetrically installed on the left and right sides of the rear scraper 2 respectively. The rear scraper 2 is slidably clamped at the rear side of the rear cover door 1 through the main sliding guide and the main sliding guides on both sides; in the working state, the rear scraper 2 can freely float up and down with the change of the cutting depth and scrape materials by relying on its own weight or external force; a material guiding unit is arranged below the main sliding guide.

[0049] In any of the above solutions, preferably, the main sliding guide includes a main chute 3 vertically arranged at the rear side of the rear scraper 2. Several central bolts 4 are fitted in the main chute 3. The front ends of the central bolts 4 are fixedly installed on the rear cover door 1. A middle sliding seat 5 is fitted at the rear side of the rear scraper 2. The front side of the middle sliding seat 5 abuts against the rear scraper 2. The middle sliding seat 5 is threadedly connected with the corresponding central bolts 4 through the screw holes on it. When the rear scraper 2 moves up and down, the main chute 3 can slide relatively with each of the central bolts 4.

[0050] When the main sliding guide works, it moves as a whole following the up-and-down movement of the rear scraper 2. Under the cooperation of the central bolt 4 and the main chute 3, the stability during up-and-down sliding can be ensured, playing a good limiting role. At the same time, the cooperation with the abutting effect between the middle sliding seat 5 and the rear scraper 2 can ensure the stability of the whole structure in the front-rear direction.

[0051] The material guiding unit includes a material guiding pipe 11 installed in cooperation at the position of the material guiding channel. Both ends of the material guiding pipe 11 are open, and the inner end of the material guiding pipe 11 is connected to the inside of the milling chamber. The right end of the material guiding pipe 11 is movably hinged on the rear scraper 2 and can rotate around a vertical axis.

[0052] The difference between this embodiment and Embodiment 1 is that in this embodiment, when discharging materials, a material guiding and rotating type discharging structure is adopted to complete the discharging. When controlling the throwing of materials, the discharging direction can be controlled by controlling the rotation angle of the material guiding pipe 11.

[0053] Embodiment 3: A side discharging structure of a milling machine, including a rear cover door 1 and a rear scraper 2. The rear cover door 1 is bolted and fixedly installed behind the milling chamber. The rear scraper 2 is slidably clamped at the rear side of the rear cover door 1. There are N main sliding guides arranged at the rear side of the rear scraper 2, and lateral sliding guides are symmetrically installed on the left and right sides of the rear scraper 2 respectively. The rear scraper 2 is slidably clamped at the rear side of the rear cover door 1 through the main sliding guides and the lateral sliding guides on both sides. In the working state, the rear scraper 2 floats up and down freely with the change of the cutting depth and scrapes materials by relying on its own weight or external force. A material guiding unit is arranged below the main sliding guide. The rear cover door 1 is fixedly installed behind the milling chamber by bolts, and the rear scraper 2 is installed on the rear cover door 1 through the main sliding guides and the lateral sliding guides, so that the function of scraping materials close to the ground when the rear scraper 2 moves up and down can be realized. At the same time, the material guiding unit below the rear scraper 2 can be selected to be opened or closed according to specific construction requirements to meet the discharging requirements of milling construction.

[0054] Preferably, in any of the above solutions, the main sliding guide member includes a main sliding groove 3 vertically provided at the rear side of the rear scraper 2. A number of central bolts 4 are fitted in the main sliding groove 3. The front ends of the central bolts 4 are fixedly installed on the rear cover door 1. A middle sliding seat 5 is fitted at the rear side of the rear scraper 2. The front side of the middle sliding seat 5 abuts against the rear scraper 2. The middle sliding seat 5 is threadedly connected to the corresponding central bolt 4 through the screw holes thereon. When the rear scraper 2 moves up and down, the main sliding groove 3 can slide relative to the central bolts 4. When the main sliding guide member works, it moves up and down following the rear scraper 2. Under the cooperation of the central bolt 4 and the main sliding groove 3, the stability during vertical sliding can be ensured, playing a good limiting role. At the same time, with the abutting effect of the middle sliding seat 5 and the rear scraper 2, the stability of the whole structure in the front-rear direction can be ensured.

[0055] Preferably, in any of the above solutions, the number of the main sliding guide members is two and the two main sliding guide members are symmetrically arranged; on the rear scraper 2 outside the main sliding groove 3 of each main sliding guide member, a main protective shell 14 is fixedly covered; a floating oil cylinder 12 is vertically provided at the rear side of the rear scraper 2. The upper end of the floating oil cylinder 12 is fixed on the rear cover door 1, and the lower end of the piston rod of the floating oil cylinder 12 is connected to the rear scraper 2.

[0056] Arranging two relatively spaced main sliding guide members can ensure the stability during vertical limiting and guiding, and further ensure the stability when the whole rear scraper 2 is lifted and lowered.

[0057] Preferably, in any of the above solutions, the material guiding unit includes a left material guiding member and a right material guiding member respectively arranged at the left and right sides of the rear side of the rear scraper 2 at intervals below the main sliding guide member; the left material guiding member and the right material guiding member are independent of each other and do not interfere with each other in the working state.

[0058] Preferably, in any of the above solutions, the left material guiding member includes a left material guiding door 9 installed at the position of the material guiding hole on the rear side of the rear scraper 2. One side of the left material guiding door 9 is hinged through a hinge and the other side is detachably fixed on the rear scraper 2 through a lock.

[0059] Preferably, in any of the above solutions, the right material guiding member includes a right material guiding door 10 installed at the position of the material guiding hole on the rear side of the rear scraper 2. One side of the right material guiding door 10 is hinged through a hinge and the other side is detachably fixed on the rear scraper 2 through a lock.

[0060] The lateral slip guide relies on the lateral bolt 7 and the lateral chute 6 to achieve relative slip limit in the vertical direction, and at the same time cooperates with the main slip guide in the middle to play a further constraining role.

[0061] Preferably, in any of the above solutions, the lateral slip guide includes a lateral limiting plate 13 fixedly arranged at the rear side of the rear scraper 2, and the lateral limiting plate 13 is fixed on the milling bin through fastening bolts.

[0062] Compared with the structure of the lateral slip guide in Embodiment 1, the structure of the lateral limiting plate 13 in this embodiment is relatively simple and more convenient to install.

[0063] Embodiment 4: A side discharge structure of a milling machine, including a rear cover door 1 and a rear scraper 2. The rear cover door 1 is fixedly installed at the rear of the milling bin by bolting, and the rear scraper 2 is slidably clamped at the rear side of the rear cover door 1. N main slip guides are arranged at the rear side of the rear scraper 2, and lateral slip guides are symmetrically installed on the left and right sides of the rear scraper 2 respectively. The rear scraper 2 is slidably clamped at the rear side of the rear cover door 1 through the main slip guides and the main slip guides on both sides. In the working state, the rear scraper 2 realizes free floating up and down with the change of cutting depth, and relies on its own weight or external force to scrape materials. A material guiding unit is arranged below the main slip guide.

[0064] Preferably, in any of the above solutions, the main slip guide includes a main chute 3 vertically arranged at the rear side of the rear scraper 2. A number of central bolts 4 are fitted in the main chute 3. The front ends of the central bolts 4 are fixedly installed on the rear cover door 1. A middle slip seat 5 is fitted at the rear side of the rear scraper 2. The front side of the middle slip seat 5 abuts against the rear scraper 2. The middle slip seat 5 is threadedly connected with the corresponding central bolts 4 through the screw holes on it. When the rear scraper 2 moves up and down, the main chute 3 can slide relative to the central bolts 4. When the main slip guide works, it moves as a whole following the up and down movement of the rear scraper 2. Under the cooperation of the central bolts 4 and the main chute 3, the stability during up and down sliding can be ensured, playing a good limiting role. At the same time, the abutting effect of the middle slip seat 5 and the rear scraper 2 can ensure the smoothness of the whole structure in the front and rear directions.

[0065] Preferably, in any of the above solutions, the number of the main sliding guides is two, and the two main sliding guides are symmetrically arranged; a main protective shell 14 is fixedly covered on the rear scraper 2 outside the main chute 3 of each main sliding guide; a floating oil cylinder 12 is vertically arranged at the rear side of the rear scraper 2, the upper end of the floating oil cylinder 12 is fixed on the rear cover door 1, and the lower end of the piston rod of the floating oil cylinder 12 is connected to the rear scraper 2. Arranging two relatively spaced main sliding guides can ensure the stability during vertical limit guiding, and further ensure the stability when the entire rear scraper 2 is lifted and lowered.

[0066] Preferably, in any of the above solutions, the material guiding unit includes a material guiding pipe 11 fitted and installed at the position of the material guiding channel. Both ends of the material guiding pipe 11 are open, and the inner end of the material guiding pipe 11 is communicated with the inside of the milling chamber. The right end of the material guiding pipe 11 is movably hinged on the rear scraper 2 and can rotate around a vertical axis.

[0067] In this embodiment, the material guiding unit uses a rotating material guiding pipe 11 as the discharging structure to complete discharging, and can control the discharging direction by controlling the rotation angle of the material guiding pipe 11 during throwing control.

[0068] Preferably, in any of the above solutions, the lateral sliding guide includes a lateral limiting plate 13 fixedly connected to the rear side of the rear scraper 2, and the lateral limiting plate 13 is fixed on the milling chamber by fastening bolts.

[0069] In addition, the structure of the lateral sliding guide is relatively simple, and it is more convenient and fast to install.

[0070] The present utility model further provides a milling chamber, which includes the side discharging structure of the milling machine according to any one of Embodiment 1, Embodiment 2, Embodiment 3, and Embodiment 4.

[0071] In summary, it can be seen that the present utility model designs a structure that is simple, easy to manufacture, convenient to disassemble and assemble, and can realize the quick rotation and opening structure of the right side plate of the milling chamber; this structure can not only close the milling chamber to prevent waste from splashing, but also realize the directional centralized recovery of waste through the scraping and side discharging structures; reduce the intensity of subsequent cleaning operations and the timeliness requirements of cleaning operations; free up reasonable and sufficient operation time and space for cleaning equipment and personnel; when the milling chamber is working, it can realize smooth lifting and lowering by relying on its own weight or the power of the floating oil cylinder 12, and can realize smooth restraint by relying on the sliding guides on both sides and in the middle of the side discharging structure of the milling machine during the lifting process.

[0072] By setting up two guide structures in the form of side-opening doors, the smoothness of material guiding can be ensured; controlling the number of opening doors can control the speed of material guiding; in addition, a rotary material guiding structure is also provided in the present utility model. By rotating around the vertical axis, the opening of the discharge and material guiding can be controlled. At the same time, controlling the rotation angle can effectively control the direction of the diversion, and the operability is stronger.

[0073] Milling machine: It belongs to the road maintenance construction equipment and is widely applicable to the large-area removal and stripping operations of surface layer diseases of asphalt pavements of all grades on expressways, municipal traffic, airport runways, port terminals, etc., as well as the surface roughening of cement pavements. It is an indispensable large-scale road maintenance equipment in modern mature road maintenance construction technologies.

[0074] Milling bin: It is used to install and fix the working device (such as: milling drum), and at the same time plays the function of concentrating and discharging waste materials.

[0075] Milling drum: The main working device of the milling machine, which realizes the stripping of road surface materials by the rotating cutter heads thereon, and is installed on the milling bin through the side end shafts.

[0076] Rear cover door 1: It is fixedly installed behind the milling bin through bolts, nuts, etc., and is used to close the milling bin chamber to prevent waste materials from being scattered.

[0077] Rear scraper 2: It is installed on the rear cover door 1 through devices such as a guiding slideway and a pressing plate, and can move up and down along the slideway, playing the role of scraping materials.

[0078] Rear scraper 2b: It is installed behind the milling bin through devices such as a guiding slideway, a side slideway, a pressing plate, and an oil cylinder, and can move up and down along the slideway, playing the role of scraping materials.

[0079] Rear scraper 2c: It is installed behind the milling bin through devices such as a side slideway and a pressing plate, and can move up and down along the slideway, playing the role of scraping materials.

[0080] Left guide door 9: A guiding device installed on the left side at the bottom of the rear scraper 2.

[0081] Right guide door 10: A guiding device installed on the right side at the bottom of the rear scraper 2.

[0082] Side guiding slideway: A guiding slideway mechanism installed on the left and right sides of the rear cover door 1;

[0083] Guiding slideway a: Installed in the middle of the rear cover door 1, it is a guiding slideway mechanism used to ensure that the rear scraper 2 is in contact with it and enables the rear scraper 2 to move up and down.

[0084] Guiding slideway b: Installed on both sides behind the milling bin, it is a guiding slideway mechanism used to ensure that the scraper is in contact with it and enables the rear scraper 2 to move up and down.

[0085] Material guiding device a: Installed in the rectangular groove device below the rear scraper 2, and the installation direction of the material guiding port can be adjusted to discharge waste materials directionally.

[0086] Material guiding device b: Installed in the mounting plate behind the rear scraper 2, and the installation direction of the material guiding port can be adjusted to discharge waste materials directionally.

[0087] Side slideway and pressing plate a: Fixedly installed on the left and right sides behind the milling bin, composed of a pressing plate, a circular guide rail, etc., and forms a slideway mechanism with the milling bin body to realize the up and down movement guiding function of the rear scraper 2.

[0088] Side slideway and pressing plate b: Fixedly installed on the left and right sides behind the milling bin, composed of a pressing plate, a guide rail, etc., and forms a slideway mechanism with the milling bin body to realize the up and down movement guiding function of the rear scraper 2.

[0089] Floating oil cylinder 12: A hydraulic cylinder, with one end fixedly connected to the milling bin and the other end fixedly connected to the rear scraper 2, used to realize the controllable up and down movement of the rear scraper 2 and the function of scraping materials.

[0090] Mounting plate: A fixing device behind the rear scraper 2 for installing the material guiding device.

[0091] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention; for those skilled in the art of this technology, any alternative improvement or transformation made to the embodiments of the present invention falls within the protection scope of the present invention.

[0092] Those parts not detailed in the present invention are all well-known technologies to those skilled in the art of this technology.

Claims

1. A side discharge structure of a milling machine, characterized in that: It includes a rear cover door and a rear scraper. The rear cover door is bolted and fixedly installed at the rear of the milling bin. The rear scraper is slidably clamped and arranged at the rear side of the rear cover door. N main sliding guides are arranged at the rear side of the rear scraper, and lateral sliding guides are symmetrically installed on the left and right sides of the rear scraper respectively. The rear scraper is slidably clamped at the rear side of the rear cover door through the main sliding guides and the lateral sliding guides on both sides. In the working state, the rear scraper realizes free up-and-down floating with the change of cutting depth and scrapes materials by relying on its own weight or external force. A material guiding unit is arranged below the main sliding guides.

2. The side discharge structure of a milling machine according to claim 1, characterized in that: The main sliding guide includes a main chute vertically arranged at the rear side of the rear scraper. Several central bolts are fitted in the main chute. The front ends of the central bolts are fixedly installed on the rear cover door. A middle sliding seat is fitted at the rear side of the rear scraper. The front side of the middle sliding seat abuts against the rear scraper. The middle sliding seat is threadedly connected with the corresponding central bolts through the screw holes on it. When the rear scraper moves up and down, the main chute can slide relatively with the central bolts.

3. The side discharge structure of a milling machine according to claim 2, characterized in that: The number of the main sliding guides is 1.

4. The side discharge structure of a milling machine according to claim 3, characterized in that: The lateral sliding guide includes a lateral chute vertically arranged at one side of the rear scraper. Several lateral bolts are fitted in the lateral chute. The inner ends of the central bolts are fixedly installed at one side of the rear cover door. A side protective shell is arranged at the outer side of the lower part of the lateral chute.

5. The side discharge structure of a milling machine according to claim 4, characterized in that: The material guiding unit includes a left material guiding component and a right material guiding component which are respectively arranged at the left and right sides of the rear side of the rear scraper at intervals below the main sliding guides. The left material guiding component and the right material guiding component are independent of each other and do not interfere with each other in the working state.

6. The side discharge structure of a milling machine according to claim 5, characterized in that: The left material guiding component includes a left material guiding door installed at the position of the material guiding hole on the rear side of the rear scraper. One side of the left material guiding door is hinged through a hinge and the other side is detachably fixed on the rear scraper through a lock. The right material guiding component includes a right material guiding door installed at the position of the material guiding hole on the rear side of the rear scraper. One side of the right material guiding door is hinged through a hinge and the other side is detachably fixed on the rear scraper through a lock.

7. The side discharge structure of a milling machine according to claim 6, characterized in that: The material guiding unit includes a material guiding pipe fitted and installed at the position of the material guiding channel. Both ends of the material guiding pipe are open, and the inner end of the material guiding pipe is communicated with the inside of the milling bin. The right end of the material guiding pipe is movably hinged on the rear scraper and can rotate around a vertical axis.

8. The side discharge structure of a milling machine according to claim 7, characterized in that: The number of the main sliding guides is 2 and the two main sliding guides are symmetrically arranged. Main protective shells are fixedly covered on the rear scraper at the outer sides of the main chutes of the main sliding guides. A floating oil cylinder is vertically arranged at the rear side of the rear scraper. The upper end of the floating oil cylinder is fixed on the rear cover door, and the lower end of the piston rod of the floating oil cylinder is connected to the rear scraper. The material guiding unit includes a left material guiding component and a right material guiding component which are respectively arranged on the left and right sides of the rear side of the rear scraper that is spaced below the main sliding guide piece at intervals; the left material guiding component and the right material guiding component are independent of each other and do not interfere with each other in the working state.

9. A milling bin, characterized in that: The milling chamber includes the side discharge structure of the milling machine according to any one of claims 1-8.

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