Rotor driving device of asphalt pavement cold recycling machine and asphalt pavement cold recycling machine

Abstract

The utility model relates to a bituminous pavement cold recycling machine rotor driving device and a bituminous pavement cold recycling machine, which belong to the technical field of road repairing equipment, and comprise an electric slow rotating mechanism connected to an oil outlet of a rotor working motor, and the input end of the electric slow rotating mechanism is connected to an external hydraulic oil tank. According to the utility model, the electric slow rotating mechanism is additionally arranged, so that the rotor can slowly and reversely rotate through the mechanism during tool changing, and the possibility of personal injury or equipment damage caused by misoperation of operators is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to road repairing equipment technical field, concretely relates to a rotor drive arrangement of asphalt pavement cold regenerator and asphalt pavement cold regenerator. BACKGROUND

[0002] The asphalt pavement cold regenerator is a kind of multifunctional construction machinery, mainly used for the upgrading and reconstruction of old asphalt pavement, i.e.

[0003] During the working process of the asphalt pavement cold regenerator, the rotor, as the core component of milling and mixing, bears important functions. The rotor rotates at high speed to mill and crush the old pavement using the cutter thereon, and fully mixes the waste materials with new mixtures. However, the cutter of the rotor will be worn after a long time of work and needs to be replaced regularly. When replacing the cutter, the rotor must be rotated to a suitable position so that the operator can conveniently disassemble and install the cutter.

[0004] Currently, there are two ways to rotate the rotor when replacing the cutter: one is manual rotation, and the other is to drive the rotor working motor using the engine. Although the manual rotation is relatively safe, it is time-consuming and laborious to operate due to the large weight and inertia of the rotor, and the efficiency is extremely low, especially on large cold regenerators, where manual rotation is almost impossible. The other way is to start the engine and drive the rotor to rotate using the rotor working motor. Although this way is more efficient, it has a great safety hazard. For example, after starting the engine, it is not easy to adjust the rotor speed to the appropriate speed required for replacing the cutter, and the operator may cause personal injury or equipment damage with slight carelessness. UTILITY MODEL CONTENTS

[0005] The utility model aims at the defects in the prior art that the rotor is heavy and has large inertia, manual rotation of the rotor is time-consuming and laborious to operate, the efficiency is extremely low, and in addition, the rotor speed is not easy to adjust to the appropriate speed required for replacing the cutter by starting the engine and hydraulic system, and the operator may cause personal injury or equipment damage with slight carelessness, and provides a rotor drive arrangement of asphalt pavement cold regenerator and asphalt pavement cold regenerator to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a rotor drive device of asphalt pavement cold regenerator, rotor drive device includes rotor work motor, hydraulic system, rotor work motor's oil inlet is connected to the high pressure side of hydraulic system, rotor work motor's oil outlet is connected to the low pressure side of hydraulic system, and the output shaft of rotor work motor is connected to the rotor of asphalt pavement cold regenerator, its characterized in be still including the electric slow rotation mechanism connected to rotor work motor oil outlet, the oil inlet of electric slow rotation mechanism is connected to the external hydraulic oil tank, drives the slow reverse rotation of rotor.

[0008] Further improvement of the technical solution is that the electric slow rotation mechanism includes a motor, a hydraulic pump, an oil suction filter, a pressure filter and a first one-way valve, the first end of the hydraulic pump is connected to the output end of the motor, the second end of the hydraulic pump is connected to the external hydraulic oil tank through the oil suction filter, the third end of the hydraulic pump is connected to the input end of the first one-way valve through the pressure filter, and the output end of the first one-way valve is connected to the oil outlet of the rotor work motor.

[0009] Further improvement of the technical solution is that the electric slow rotation mechanism further includes an overload overflow valve, the first end of the overload overflow valve is connected to the second end of the hydraulic pump, and the second end of the overload overflow valve is connected to the third end of the hydraulic pump.

[0010] Further improvement of the technical solution is that the pressure filter includes a filter element, a second one-way valve and a pressure sensor, the first end of the filter element and the input end of the second one-way valve are both connected to the third end of the hydraulic pump, the second end of the filter element and the output end of the second one-way valve are both connected to the input end of the first one-way valve, and the input end of the pressure sensor is connected in parallel across the filter element.

[0011] Further improvement of the technical solution is that the filter element adopts a filter core structure, the filter core is made of glass fiber filter paper, and the filter core is installed in a sealed metal shell.

[0012] Further improvement of the technical solution is that the oil suction filter adopts a barrel structure, a plurality of layers of stainless steel filter screens parallel to the barrel wall are arranged in the barrel, and the pore size of the stainless steel filter screens gradually decreases from the outside to the inside.

[0013] The second aspect of the utility model provides an asphalt pavement cold regenerator, which includes the rotor drive device of the asphalt pavement cold regenerator according to any one of the above.

[0014] The utility model discloses a beneficial effect lies in: the mode of traditional reliance on engine drive rotor work motor tool changing, and the hydraulic system is in high pressure oil supply state after engine starting, and rotor speed is too fast, and easy to cause safety accident. The utility model adds electric slow rotation mechanism, and when tool changing, the mechanism can make the rotor slowly reverse rotation, and the possibility of personal injury or equipment damage caused by the operator's misoperation is greatly reduced. In addition, the previous manual rotation rotor needs to be operated by multiple workers, and the time consumption is long. After adopting the electric slow rotation device of the utility model, only a small amount of workers are needed to assist operation in the tool changing process, and the labor cost investment is greatly reduced.

[0015] In addition, the utility model discloses reliable design principle, simple structure has very extensive application prospect.

[0016] Therefore, compared with the prior art, the utility model has outstanding substantial features and significant progress, and the beneficial effects of the implementation are also obvious. DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the utility model, the drawings needed to be used in the description will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise.

[0018] Figure 1 It is the structure schematic view of the rotor structure of the prior asphalt pavement cold regenerator.

[0019] Figure 2 It is the relationship schematic view of the rotor driving device provided by the utility model.

[0020] 110 is rotor cover, 111 is rotor cover tail door, 120 is rotor, 210 is motor, 220 is hydraulic pump, 230 is oil suction filter, 240 is pressure filter, 250 is first check valve, 260 is overload overflow valve, 270 is rotor work motor, 280 is external hydraulic oil tank. CONCRETE IMPLEMENTING METHOD

[0021] In order to make the purpose, feature, advantage of the utility model more obvious and easy to understand, the technical scheme in the utility model will be clearly and completely described below in combination with the drawings in the embodiment, and obviously, the following described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the application.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0023] The existing asphalt pavement cold regenerator is a key equipment in the field of road construction, and a rotor structure of the asphalt pavement cold regenerator is shown in Figure 1 The efficient operation of the working transmission device plays a crucial role in the upgrading and reconstruction project of the old road. The working transmission device includes a rotor driving device, and the existing rotor driving device is mainly composed of a hydraulic system (including an engine, a transfer case and a working hydraulic pump), a hydraulic motor (a rotor working motor 270), a speed reducer, a control module and a power supply module for supplying power to the entire device and a plurality of core components. The oil inlet B of the rotor working motor 270 is connected to the high-pressure side of the hydraulic system, the oil outlet A of the rotor working motor 270 is connected to the low-pressure side of the hydraulic system, the output shaft of the rotor working motor 270 is connected to the rotor of the asphalt pavement cold regenerator, and the hydraulic system is in communication connection with the control module.

[0024] Among them, the engine as the power source of the whole device, unceasingly output powerful power. This power is first transmitted to the transfer case, which is an intelligent power distribution hub. According to the actual needs of different working parts of the equipment, it rationally distributes the power output by the engine to ensure that each part can obtain the right amount of power support, so as to realize collaborative work. After distribution by the transfer case, the power is then transmitted to the working hydraulic pump. The working hydraulic pump plays a key role in energy conversion in the entire transmission system. It cleverly converts the mechanical energy output by the engine into hydraulic energy, so that the hydraulic oil flows in the system at high pressure. These high-pressure oil carries a lot of energy and is precisely delivered to the hydraulic motor. The hydraulic motor, as an important link in the power transmission chain, its role is to convert the hydraulic energy delivered by the hydraulic pump into mechanical energy again, output powerful torque. The speed reducer receives power from the hydraulic motor, and through a series of precise gear meshing and operation, it precisely controls the speed and reduces the high speed to the best range suitable for the working rotor, while correspondingly increasing the torque, providing stable and strong power support for the working rotor. Finally, under the close cooperation and collaborative work of these components, the power is successfully transmitted to the working rotor. After obtaining power, the working rotor begins to rotate at high speed, and with the sharp cutters installed on its surface, it carries out efficient milling, crushing and mixing operations on the old asphalt pavement. In the milling process, the high-speed rotating cutter quickly cuts off the asphalt material on the surface of the old road; in the crushing stage, the cutter further exerts force to crush the blocky material into small particles; and in the mixing link, the working rotor fully plays the role of mixing, uniformly mixing the old and new materials, laying a solid foundation for the subsequent paving and compaction process.

[0025] However, in the conventional asphalt pavement cold recycling machine operation process, when the cutter of the working rotor needs to be replaced, the engine is usually started to drive the rotor to rotate by means of the rotor working motor 270. This method can achieve high efficiency to a certain extent, quickly rotate the rotor to the required position, and save part of the time cost. However, it cannot be ignored that it also brings great safety hazards. Once the engine is started, the entire hydraulic system quickly enters a high-pressure working state, and the hydraulic oil in the system flows at a high speed between the pipelines and various components at a high pressure. At this time, the rotor working motor 270 will make the rotor rotate at a very fast speed under the drive of the high-pressure oil, and it is not easy to adjust to the appropriate speed required for replacing the cutter. For the on-site operator, in such a high-pressure and high-speed working environment, any slight negligence or misoperation may cause serious consequences. For example, when replacing the cutter near the rotor, if the operator's clothes or tools are accidentally caught in the high-speed rotating rotor, serious personal injury will occur instantly; or in the operation process, due to the misjudgment of the running state of the equipment, collision with the high-speed rotating component will occur, which not only causes harm to the operator himself, but also is likely to cause damage to the key components of the equipment due to external impact, thereby affecting the progress of the entire project and causing huge economic losses.

[0026] In view of the above technical defects, the utility model provides a rotor driving device of asphalt pavement cold recycling machine, as shown in Figure 2 The rotor driving device further includes an electric slow rotation mechanism connected to the oil outlet of the rotor working motor 270, and the oil inlet of the electric slow rotation mechanism is connected to the external hydraulic oil tank 280 to drive the rotor to rotate slowly. Specifically, the electric slow rotation mechanism includes a motor 210, a hydraulic pump 220, an oil suction filter 230, a pressure filter 240, and a first one-way valve 250. The first end of the hydraulic pump 220 is connected to the output end of the motor 210, the second end of the hydraulic pump 220 is connected to the external hydraulic oil tank 280 through the oil suction filter 230, the third end of the hydraulic pump 220 is connected to the input end of the first one-way valve 250 through the pressure filter 240, and the output end of the first one-way valve 250 is connected to the oil outlet of the rotor working motor 270.

[0027] The traditional engine-driven rotor rotating mode has great safety hazards. After the engine is started, the hydraulic system is in a high pressure state, the rotor rotates too fast, it is not easy to adjust to the appropriate speed required for replacing the cutter, and the operator may cause personal injury or equipment damage due to slight negligence; in addition, the rotor rotates in the normal working state, and the cutter also rotates in the normal working state. If the rotor remains in a stationary state during the replacement of the cutter, due to inertia or accidental power disturbance (such as residual energy, slight displacement of the mechanical structure, etc.), the rotor may suddenly rotate in the positive direction. This accidental positive rotation will put the cutter being installed or disassembled in a dangerous state, which may cause the operator to be injured. The introduction of the electric slow rotating mechanism fundamentally solves this problem. The mechanism is connected to the oil outlet of the rotor working motor 270, the oil outlet is connected to the low pressure side of the hydraulic system (the oil outlet of the rotor working motor 270 plays the effect of the oil inlet in the utility model, and the original oil inlet of the rotor working motor 270 connected to the high pressure side of the hydraulic system plays the effect of the oil outlet, realizing the reverse rotation of the rotor), and the hydraulic pump 220 is driven to work by the motor 210. When replacing the rotor cutter and other operations are performed, the electric slow rotating mechanism can be started alone, so that the rotor rotates in the reverse direction at a slow and stable speed. In this way, the operator has enough time and reaction space to operate, avoids the danger caused by high-speed positive rotation, greatly reduces the probability of safety accidents, and provides a safe and reliable working environment for the on-site workers.

[0028] In addition, the pressure filter 240 includes a filter element, a second one-way valve and a pressure sensor, the first end of the filter element and the input end of the second one-way valve are connected to the third end of the hydraulic pump 220, the second end of the filter element and the output end of the second one-way valve are connected to the input end of the first one-way valve 250, the input end of the pressure sensor is connected in parallel across the filter element, and the output end of the pressure sensor is connected to the control module.

[0029] The filter element is the core component of the pressure filter 240, which plays a key role in ensuring the cleanliness of hydraulic oil. Hydraulic oil circulates throughout the hydraulic system of the entire rotor drive device, playing an important role in power transmission and lubrication. However, in the actual working process, hydraulic oil is inevitably contaminated by various impurities such as metal debris, dust particles, etc. These impurities, if they enter the rotor working motor 270 and other key components along with the hydraulic oil, will exacerbate the wear and tear of the components, reducing the performance and service life of the equipment. The filter element in this design can effectively intercept these impurities, ensuring that the hydraulic oil entering the rotor working motor 270 is clean and pure. The application of pressure sensors in the pressure filter 240 provides strong support for the intelligent operation of the equipment. The input end of the pressure sensor is connected in parallel to the two ends of the filter element, which can monitor the pressure change before and after the filter element in real time. Under normal working conditions, there will be a certain pressure difference before and after the filter element, which reflects the working state and blockage degree of the filter. When the filter element is gradually blocked by impurities, the pressure difference before and after it will increase. The pressure sensor will detect this pressure change in time and transmit the signal to the control module. The control module can accurately judge the working state of the filter according to the received pressure signal. For example, if the pressure difference exceeds the preset safety range, the control module can issue an alarm in time to remind the operator to clean or replace the filter, thereby avoiding the abnormal pressure of the hydraulic system and equipment failure caused by filter blockage.

[0030] Further, the electric slow rotation mechanism further comprises an overload relief valve 260, a first end of the overload relief valve 260 being connected to a second end of the hydraulic pump 220, and a second end of the overload relief valve 260 being connected to a third end of the hydraulic pump 220.

[0031] During the operation of the electric slow turning mechanism, due to various reasons such as the rotor encountering hard obstacles, hydraulic system failure, etc., the system pressure may abnormally rise. Without effective pressure control measures, excessive pressure can cause serious damage to various parts of the equipment. For example, excessive pressure can cause hydraulic pipeline rupture, seal damage, and even deformation or damage to internal parts of core components such as hydraulic pump 220, hydraulic motor, etc. The overload relief valve 260 can monitor the pressure inside the electric slow turning mechanism in real time. When the internal pressure of the electric slow turning mechanism exceeds its set safety value (6.5 MPa), the overload relief valve 260 will quickly open the overflow channel. It is like an intelligent "safety valve" that flows excess hydraulic oil back to the tank or low-pressure circuit through the overflow channel, thereby rapidly reducing the internal pressure of the electric slow turning mechanism and stabilizing it within a safe range. This rapid response and pressure regulation capability effectively avoids irreversible damage to the equipment due to pressure overload, extends the service life of the equipment, and reduces equipment maintenance costs and downtime. In addition, the hydraulic pump 220, as an important power component of the electric slow turning mechanism, is at great risk when the internal pressure of the electric slow turning mechanism is abnormal. The overload relief valve 260 is connected between the second end and the third end of the hydraulic pump 220, and can timely shunt when the pressure is too high, reducing the working burden of the hydraulic pump 220. When the internal pressure of the electric slow turning mechanism rises, the overload relief valve 260 opens, and part of the hydraulic oil no longer passes through the normal working process of the hydraulic pump 220, but flows away through the overflow valve, avoiding excessive wear and damage of the hydraulic pump 220 due to excessive pressure, ensuring that all components of the electric slow turning mechanism can operate in a safe pressure environment. In addition, when the electric slow turning mechanism operates in a stable pressure environment, the operation of the equipment is more stable and reliable. The operator can more accurately control the rotation speed and direction of the rotor, improving work efficiency and construction quality. For example, when replacing the rotor cutter, if the system pressure is unstable, the rotation of the rotor may fluctuate, causing inconvenience to the operator and even affecting the accuracy of cutter replacement. The overload relief valve 260 ensures the stability of the internal pressure of the electric slow turning mechanism, making the rotation of the rotor more stable and providing better operating conditions for the operator.

[0032] The oil absorption filter 230 adopts a cylindrical structure, and a plurality of layers of stainless steel filter screens parallel to the cylinder wall are arranged in the cylinder. The pore size of the stainless steel filter screens gradually decreases from the outside to the inside. The pore size of the outermost layer of stainless steel filter screens is relatively large, and its primary function is to preliminarily intercept large-particle impurities in the hydraulic oil. In the working environment of the asphalt pavement cold recycling machine, the hydraulic oil may mix with large-particle pollutants such as sand, metal debris, and rubber fragments. If these large-particle impurities directly enter the external hydraulic oil tank, they will cause serious wear and damage to key components such as the hydraulic pump 220 and the hydraulic motor. By the filter screen with a relatively large pore size on the outermost layer, these large-particle impurities can be quickly and effectively blocked outside, reducing the potential threat to the subsequent filtering link and the external hydraulic oil tank. As the hydraulic oil flows into the cylinder, the pore size of the subsequent layers of stainless steel filter screens gradually decreases. This allows the filter to perform graded filtration on impurities of different particle sizes, gradually removing smaller and smaller particles. The filter screens in the middle layer can intercept medium-particle-size impurities, and the small-pore-size filter screen in the innermost layer can capture tiny impurity particles. This graded filtration method greatly improves the filtration efficiency and accuracy, ensuring that the hydraulic oil entering the hydraulic pump 220 has high cleanliness, and providing a solid guarantee for the stable operation of the entire electric slow rotation mechanism. The cylindrical structure provides a solid support frame for the multiple layers of stainless steel filter screens. The filter screens are arranged parallel to the cylinder wall, so that they can be uniformly stressed when subjected to the pressure of the hydraulic oil flow, and are not prone to deformation and displacement. This stable structural design not only ensures the stability of the filtration effect, but also prolongs the service life of the oil absorption filter 230, reduces equipment failures and maintenance costs caused by filter damage.

[0033] The filter element adopts a filter core structure, and the filter core is made of glass fiber filter paper and installed in a sealed metal shell. Although the oil suction filter 230 can intercept most large-particle impurities, some small impurities will still enter the subsequent system with the oil. The filter core made of glass fiber filter paper has excellent fine filtering capacity. The fiber structure of the glass fiber filter paper is fine and uniform, and can form countless small and tortuous channels. When the hydraulic oil that has been preliminarily filtered by the oil suction filter 230 enters the filter core, these small channels can deeply intercept the small particles in the oil. Even extremely small metal particles, dust and other pollutants are difficult to pass through the filter core, thereby ensuring that the oil entering the key components of the hydraulic system has extremely high purity. This deep fine filtering effectively reduces the wear of impurities on core components such as the hydraulic pump 220 and the hydraulic motor, greatly improving the reliability and stability of the equipment. Hydraulic oil usually contains various additives and chemicals to meet different working requirements. The glass fiber filter paper has good chemical stability and can resist the erosion of various chemicals in the hydraulic oil. It will not react with the additives in the oil, nor will it be corroded by the acid and alkali substances in the oil. This enables the filter core to maintain stable performance in a complex oil environment for a long time, without chemical reactions that can reduce the filtering effect or damage the filter core. Compared with other filter materials, this feature of the glass fiber filter paper greatly prolongs the service life of the filter core, reduces the frequency of replacing the filter core, and reduces the maintenance cost of the equipment.

[0034] Finally, the utility model provides a kind of asphalt pavement cold regenerator, including the rotor drive device of asphalt pavement cold regenerator of any one described above.

[0035] The working principle of the rotor driving device is as follows: when it is found that the rotor cutter of the asphalt pavement cold regeneration machine needs to be replaced, the first operation of the operator is to lift the rotor to the highest position, thereby providing sufficient space for subsequent cutter replacement operation; then, the operator opens the tail door 111 of the rotor cover to expose the internal rotor part structure, thereby creating conditions for subsequent operation; at this time, the operator needs to ensure that the engine is turned off (the engine is turned off to cut off the power output, so as to avoid safety accidents caused by accidental start of the engine during cutter replacement. At the same time, after the engine is turned off, the pressure in the hydraulic system will gradually decrease, thereby preparing for subsequent connection of the power supply of the motor 210); after the engine is turned off, the power supply of the motor 210 is connected. The motor 210 serves as a power source, and the output shaft thereof is connected with the hydraulic pump 220. When the motor 210 is connected with the power supply, it starts to rotate at a preset rotating speed (3000 r / min) to drive the hydraulic pump 220 (the displacement is 11 ml / r) to work. The hydraulic pump 220 functions to draw hydraulic oil from an external hydraulic oil tank, and the hydraulic oil flows to the rotor working motor 270 through the pressure filter 240 and the first one-way valve 250 (for preventing backflow of the hydraulic oil) in sequence, thereby driving the rotor to perform reverse slow rotation. When the rotor rotates to a suitable position (manually observed), generally about 1 / 4 circle, the power supply is disconnected. At this time, the rotor stops rotating, and the operator can start to replace the cutter in the convenient operation position. After the cutter convenient for replacement is replaced, the power supply is connected again to make the rotor continue to rotate, and the above-mentioned cutter replacement operation is repeated until all the cutters needing to be replaced are replaced.

[0036] The above description of disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rotor driving device of an asphalt pavement cold regenerator, the rotor driving device comprising a rotor working motor, a hydraulic system, an oil inlet of the rotor working motor being connected to a high-pressure side of the hydraulic system, an oil outlet of the rotor working motor being connected to a low-pressure side of the hydraulic system, and an output shaft of the rotor working motor being connected to a rotor of the asphalt pavement cold regenerator; characterized in that, The electric slow rotation mechanism is connected to the oil outlet of the rotor working motor, and an oil inlet of the electric slow rotation mechanism is connected to an external hydraulic oil tank to drive the rotor to rotate reversely at a low speed. The electric slow rotation mechanism comprises an electric motor, a hydraulic pump, an oil suction filter, a pressure filter and a first one-way valve, a first end of the hydraulic pump is connected to an output end of the electric motor, a second end of the hydraulic pump is connected to the external hydraulic oil tank through the oil suction filter, a third end of the hydraulic pump is connected to an input end of the first one-way valve through the pressure filter, and an output end of the first one-way valve is connected to the oil outlet of the rotor working motor.

2. The rotor driving device of the asphalt pavement cold recycler according to claim 1, characterized in that, The electric slow rotation mechanism further comprises an overload relief valve, a first end of the overload relief valve is connected to the second end of the hydraulic pump, and a second end of the overload relief valve is connected to the third end of the hydraulic pump.

3. The rotor driving device of the asphalt pavement cold recycler according to claim 1, characterized in that, The pressure filter comprises a filter element, a second one-way valve and a pressure sensor, a first end of the filter element and an input end of the second one-way valve are both connected to the third end of the hydraulic pump, a second end of the filter element and an output end of the second one-way valve are both connected to the input end of the first one-way valve, and an input end of the pressure sensor is connected in parallel to both ends of the filter element.

4. The rotor driving device of the asphalt pavement cold recycler according to claim 3, characterized in that, The filter element adopts a cartridge type structure, and the cartridge is made of glass fiber filter paper and is installed in a sealed metal shell.

5. The rotor driving device of the asphalt pavement cold recycler according to claim 1, characterized in that, The oil suction filter adopts a cylinder type structure, and a plurality of layers of stainless steel filter screens parallel to the cylinder wall are arranged in the cylinder, and the pore sizes of the stainless steel filter screens gradually decrease from the outside to the inside.

6. An asphalt pavement cold recycler characterized by, The rotor driving device of the asphalt pavement cold recycling machine comprises the rotor driving device of the asphalt pavement cold recycling machine according to any one of claims 1-5.

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