Land preparation device for separating adhering soil using waste heat

Abstract

The application is a kind of land preparation device for separating adhering soil by using waste heat, belonging to the technical field of agricultural machinery, aiming at the defects that the existing soil entering operation part is easily adhered by soil, and then causing the overheat of speed reducer operation, comprising: at least one set of transmission system with speed reducer and soil entering operation part for operating soil, the transmission system is used to provide suitable rotating speed for the movement of soil entering operation part, the land preparation device further comprises at least one heat source, and the soil entering operation part is used as the heat exchange surface of the heat source. The application uses heating element as heat source, uses heat exchange working medium to exchange heat in rotating main shaft, and conducts heat to soil entering operation part. Since the temperature of the surface of soil entering operation part is increased, the clay adhered to the surface of soil entering operation part is dried by heat, and is more easily automatically fallen from soil entering operation part in subsequent rotating operation.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of agricultural machinery, and particularly relates to a soil adhesion separation and soil preparation device utilizing waste heat. BACKGROUND

[0002] Before sowing or transplanting, the soil needs to be treated by shallow plowing, plowing, deep plowing, harrowing, leveling, tamping, smoothing, hilling, ridging and furrowing, which is collectively referred to as soil preparation. Soil preparation is commonly used in forestation, lawn planting and pre-sowing of crops. For example, in the case of farming, soil preparation is used to change the water retention, water conduction, air conduction and solute migration properties of the soil, to improve soil fertility, and to achieve the purpose of increasing yield and efficiency of crops after sowing. The existing soil preparation machine mainly comprises a transmission system and a soil working part. The transmission system drives the rotating main shaft to move after speed reduction by a speed reducer, so that the soil working part arranged on the rotating main shaft moves synchronously.

[0003] According to the operation requirements, the soil working part can cut, shear, crush, turn over, push and loosen the soil during operation. The water content of the soil in different regions, at different times and of different types is different. If the water content of the soil in the operation area is high, the soil will adhere to the soil working part during operation, and the adhered soil layer will gradually thicken with the movement of the soil working part, thereby increasing the load of the soil working part, increasing the operation resistance, increasing the overall energy consumption of the equipment and reducing the operation efficiency, and ultimately failing to meet the soil preparation standard. In order to overcome the problem of soil adhesion of the soil working part, the current measures mainly include roughness treatment on the surface of the soil working part, automatic cleaning by adding a shaking or scraping mechanism, or periodic manual cleaning. However, no matter which existing measure is used, in the implementation process, either the processing complexity of the soil working part is increased or the production cost of the equipment is increased, or the labor cost for cleaning the adhered soil layer is increased, which is time-consuming and labor-intensive.

[0004] In addition, when too much adhered soil layer adheres to the soil working part, the load borne by the speed reducer driving the movement of the soil working part will increase. When the load borne by the speed reducer exceeds its design capacity, excessive friction and pressure will be generated in the transmission part, and these energies will be converted into heat, causing the temperature of the speed reducer to rise. In a high-temperature environment, the internal parts of the speed reducer are easily affected by thermal expansion, thereby causing unstable operation of the speed reducer, and even causing failure. SUMMARY

[0005] The present application provides a land preparation device using waste heat to separate adhered soil, which uses the heat generated by the existing equipment during operation to provide heat energy for the soil working part, so that the adhered soil layer on the soil working part can be easily removed due to drying.

[0006] The technical scheme adopted by the present application is as follows: a land preparation device using waste heat to separate adhered soil, which comprises at least one set of transmission system with a speed reducer and soil working part, the transmission system is used to provide suitable rotating speed for the movement of the soil working part, and the land preparation device further comprises at least one heat source, the heat source uses the soil working part as a heat exchange surface.

[0007] Preferably, the heat source uses the heating element in the transmission system as the first heat source, and the heat transfer between the heating element and the soil working part is realized through the heat-conducting working medium in the transmission system, so as to improve the surface temperature of the soil working part during operation.

[0008] Preferably, the heat-conducting working medium flows in the first circulation channel between the heating element and the soil working part.

[0009] Preferably, the soil working part is fixed on the rotating main shaft, and the rotating main shaft is a metal cylinder with a cavity.

[0010] Preferably, the first circulation channel leads the heat-conducting working medium out of the heating element and flows through the cavity of the rotating main shaft.

[0011] Preferably, the first circulation channel comprises a heat input section, a heat exchange section and a circulation section arranged in sequence, the heat input section is a passage for leading the heat-conducting working medium in the heating element out to the cavity of the rotating main shaft; the heat exchange section is the cavity in the rotating main shaft, which is used to conduct heat from the heat-conducting working medium to the soil working part; and the circulation section is a loop between the rotating main shaft and the heating element, which is used to make the heat-conducting working medium in the rotating main shaft flow back to the heating element after heat exchange.

[0012] Preferably, a filler is arranged in the cavity of the rotating main shaft to reduce the volume of the heat-conducting working medium.

[0013] Preferably, the overall volume of the filler is smaller than the volume of the cavity of the rotating main shaft, and a channel for the heat-conducting working medium to flow is formed between the filler and the inner wall of the rotating main shaft.

[0014] Preferably, the soil working part can obtain heat from the first heat source and / or the second heat source.

[0015] Preferably, the second heat source transfers heat to the soil working part through a second circulation channel, and the second circulation channel and the first circulation channel are independent channels.

[0016] The beneficial effects of the present application are:

[0017] 1、The present application uses the heat element as the heat source, and uses the heat-conducting working medium to conduct heat to the soil working part. The temperature of the surface of the soil working part is increased, so that the clay attached to the surface is dried by heat and is more easily automatically separated from the soil working part in the subsequent rotation operation.

[0018] 2、The present application ingeniously uses the heat element in the equipment to generate heat during operation, and uses the heat-conducting working medium to conduct the heat generated by the heat element, which solves the heat dissipation problem of the heat element, and also solves the problem of clay adhering to the soil working part affecting the operation effect. In addition, the use of the first heat source does not increase the weight or volume of the existing equipment, does not increase the difficulty of improving the existing equipment, and does not excessively increase the production cost, so that it has good practicability and popularization.

[0019] 3、The present application uses the existing heat source on the equipment to solve the problem of large working resistance caused by clay adhering to the soil working part, and improves the operation efficiency of the soil working part.

[0020] 4、In order to keep the surface temperature of the soil working part constant during operation, the present application provides a variety of combined heat sources for the soil working part, so that it can be applied to different water content soils, and can be used as backup or supplemental heat sources. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a front view of embodiment 1 of the present application;

[0022] Figure 2 is a left view of Figure 1 ;

[0023] Figure 3 is a right view of Figure 1 ;

[0024] Figure 4 is a sectional view of A-A in Figure 2 ;

[0025] Figure 5 is a partial structure sectional view of the first circulation channel in embodiment 2;

[0026] Figure 6 is a local structure schematic view of the cylindrical placeholder in Figure 5 ;

[0027] Figure 7 is a local structure schematic view of the cylindrical placeholder in embodiment 3;

[0028] Figure 8 Part structure sectional view of the second circulation channel in Example 4;

[0029] Figure 9 For Figure 8 Enlarged view at B in the middle;

[0030] Wherein: 1 frame, 2 speed reducer, 3 rotating main shaft, 4 transition shaft, 5 first circulation channel, 51 heat input section, 52 heat exchange section, 53 circulation section, 6 soil working component, 7 cylindrical placeholder, 71 small cylindrical placeholder, 72 annular support, 73 large cylindrical placeholder, 74 heat exchange channel, 75 counterbore, 8 rotating sealing sleeve. DETAILED DESCRIPTION

[0031] When the existing agricultural implement is working, it is usually driven by a traction vehicle, and the tractor is a common traction vehicle in the field of agricultural machinery. Through the traction of the tractor, the working of the soil in the working area of the agricultural implement is realized, and a hydraulic system is also provided on the tractor or the agricultural implement according to the working requirements. The agricultural implement mentioned in the present application refers to an agricultural tillage mechanical device with a soil working component, especially a stubble cleaner, a mixer, a rotary tiller or a subsoiler with a driven rotary soil working component. If a plow, a harrow or other devices are used in the technical solutions described in some embodiments of the present application, the technical effects achieved by the present application can also be achieved.

[0032] The land preparation device in the present embodiment comprises the above-mentioned agricultural implement. The land preparation device comprises a frame 1 for carrying and fixedly installing a soil working component and other devices. Specifically, the frame 1 is usually provided with a power train, a rotating main shaft 3 and a soil working component 6. The power train comprises a prime mover, a transmission member and a speed reduction device. The prime mover usually refers to one end of the land preparation device used to connect the tractor PTO to obtain power input. The transmission member is used to transmit the input power to the speed reduction device. The speed reduction device can be a speed reducer 2, which provides matched output torque for the soil working component 6. The soil working component 6 is fixed on the rotating main shaft 3, which is connected with the speed reducer 2 and drives the soil working component 6 to rotate synchronously. The working object of the soil working component 6 is the soil on the ground in the working area.

[0033] The rotating main shaft 3 is a metal cylinder with a cavity inside, which allows liquid to flow along the axial direction of the rotating main shaft 3. The two shaft ends of the rotating main shaft 3 are directly or indirectly rotatably installed on the frame 1 through a bearing seat, i.e. the two shaft ends of the rotating main shaft 3 are directly installed in the bearing seat, or the rotating main shaft 3 can be connected with the bearing seat through a transition shaft 4. In the present embodiment, the rotating main shaft 3 is connected with the bearing seat through the transition shaft 4, which is taken as an example for introduction. For the convenience of introduction, the transition shaft 4 is directly meshed with the gear inside the speed reducer 2, which is taken as an example for introduction.

[0034] The soil-penetrating components 6 are multiple metal components arranged along the axis of the rotating main shaft 3 for disturbing the soil. During arrangement, they can be arranged in a spiral pattern along the axis of the rotating main shaft 3, or at equal intervals. There is no specific limitation on the arrangement of the soil-penetrating components 6 on the rotating main shaft 3. The overall shape of the soil-penetrating components 6 can be shovel-shaped, knife-shaped, or other shapes that facilitate cutting, shearing, breaking, turning, pushing, and loosening the soil. This embodiment uses a shovel-shaped component as an example. Example 1

[0035] like Figures 1-4 As shown, this embodiment is a land preparation device that uses waste heat to separate adhering soil. It is based on the existing land preparation device, with the addition of a first circulation channel 5. The heat generated by the heating element in the transmission system during operation is used as the first heat source. The heat from the first heat source is transferred to the soil entry operation component 6 through the first circulation channel 5, and the soil entry operation component 6 is used as the heat exchange surface of the first heat source.

[0036] The first circulation channel 5 includes a heat input section 51, a heat exchange section 52, and an external circulation section 53. The heat input section 51 is a passage for introducing lubricating oil from the reducer 2 to the rotating spindle 3. According to the specific structure of this embodiment, the heat input section 51 is located in the transition shaft 4 between the reducer 2 and the rotating spindle 3. One end of the transition shaft 4 is immersed in the reducer 2 and meshes with a gear inside the reducer 2. The specific connection method depends on the structure. The reducer 2 drives the transition shaft 4 and the rotating spindle 3 to rotate synchronously. A through hole is opened in the transition shaft 4, which introduces the lubricating oil from the reducer 2 into the cavity of the rotating spindle 3.

[0037] The heat exchange section 52 is located inside the cavity of the rotating main shaft 3. When the lubricating oil in the reducer 2 flows through the cavity, it exchanges heat with the inner wall of the rotating main shaft 3. Since the rotating main shaft 3 is close to the ground, the soil entry operation component 6 is fixed on the outer periphery of the rotating main shaft 3 and operates continuously in the soil, so that its temperature is always lower than the oil temperature of the lubricating oil flowing out of the reducer 2. Therefore, according to the basic principle of heat transfer, the heat of the lubricating oil will be gradually transferred to the soil entry operation component 6.

[0038] The circulation section 53 is located at a suitable position on the frame 1, preferably without interfering with the operation of other components. Preferably, the circulation section 53 is located on the upper part of the frame 1. The circulation section 53 is a pipeline used to guide the lubricating oil that has been heated in the rotating spindle 3 back to the reducer 2, so that the cooled lubricating oil can continue to lubricate and cool the gears in the reducer 2, thereby realizing cyclic operation. One end of the circulation section 53 is connected to the rotating spindle 3, and the other end is connected to the oil sump in the reducer 2. Preferably, in order to control the flow rate of the lubricating oil, an oil pump can be installed on the pipeline of the circulation section 53.

[0039] In the embodiment, the heat generating element in the transmission system is the speed reducer 2. The lubricating oil in the speed reducer 2 is used as the heat conducting medium and is guided out of the speed reducer 2 by the first circulation channel 5, and is introduced into the cavity of the rotating main shaft 3 to exchange heat, and the heat is conducted to the earth working component 6, and then flows back to the speed reducer 2.

[0040] Working process:

[0041] When the speed reducer 2 starts, the transition shaft 4 is driven to rotate synchronously with the rotating main shaft 3. At this time, the lubricating oil flows from the speed reducer 2 into the heat exchange section 52 (i.e. the cavity of the rotating main shaft 3) through the heat input section 51, and exchanges heat with the earth working component 6 or the adhered soil in contact with the outer wall of the rotating main shaft 3 in the heat exchange section 52. The lubricating oil after heat exchange flows out of the cavity of the rotating main shaft 3 and flows back to the speed reducer 2 through the circulation section 53.

[0042] When the lubricating oil flows through the rotating main shaft 3, because the rotating main shaft 3 is always close to the ground, the temperature is much lower than that of the lubricating oil flowing out of the speed reducer 2. Since the rotating main shaft 3 and the earth working component 6 are both made of metal, and metal generally has good heat conduction performance, the lubricating oil and the rotating main shaft 3 can achieve good heat transfer effect. The cooled lubricating oil flows back to the speed reducer 2 to continue lubricating and cooling the gears in the speed reducer 2. The heated rotating main shaft 3 will conduct heat to the earth working component 6 which has a lower temperature. As the surface temperature of the earth working component 6 rises, the clay adhered to the surface of the earth working component 6, especially the adhered soil layer in contact with the earth working component 6, gradually dries. When the water content of clay is high, the soil and water exist in the form of hydrate, and the viscosity is strong. When the water is affected by the heat source and disappears, weathering occurs, which causes the soil to lose cohesion and separate into layers. During the rotation of the earth working component 6, the adhered soil layer is easily separated from the earth working component 6 under the action of the rotation force of the rotating main shaft 3 and / or the friction force with the soil. Therefore, even when working in soil with high water content, there will be no thick clay adhered to the surface of the earth working component 6. Embodiment 2

[0043] Since the first circulation channel 5 is added to the speed reducer 2, the filling amount of lubricating oil in the speed reducer 2 will also increase. On the basis of embodiment 1, under the premise of ensuring the normal operation of the speed reducer 2, the filling amount of lubricating oil is reduced by adding a filler to the rotating main shaft 3 to reduce the volume of the rotating main shaft 3, thereby reducing the cost of tillage.

[0044] As Figure 5 and Figure 6As shown, the filler is a cylindrical placeholder 7 made of material with small specific heat capacity, which does not affect the flow of lubricating oil in the rotating main shaft 3 and the heat exchange efficiency. The cylindrical placeholder 7 includes a small cylindrical placeholder 71 and an annular support 72, which is an annular support member sleeved and fixed outside the small cylindrical placeholder 71, and a support rod horizontally extending to the outside is arranged on the outer periphery of the annular support 72. The length of the small cylindrical placeholder 71 is smaller than the inner length of the rotating main shaft 3, so that the two ends of the small cylindrical placeholder 71 form spaces for the heat conducting medium to enter and exit; a plurality of annular supports 72 are arranged along the axis of the small cylindrical placeholder 71 at intervals, and the outer diameter of the annular support 72 is equal to or slightly smaller than the inner diameter of the cavity of the rotating main shaft 3, so that the small cylindrical placeholder 71 can abut against the cavity of the rotating main shaft 3 through the annular support 72.

[0045] After the cylindrical placeholder 7 is loaded into the cavity of the rotating main shaft 3, the small cylindrical placeholder 71 occupies most of the space in the cavity, the outer edge of the annular support 72 abuts against the inner wall of the rotating main shaft 3, and a space for the lubricating oil to flow is formed between the small cylindrical placeholder 71 and the inner wall of the rotating main shaft 3. Due to the reduction of the lubricating oil flow space, the filling amount of the lubricating oil can be effectively reduced. Embodiment 3

[0046] This embodiment provides an alternative structure for the cylindrical placeholder 71 in Embodiment 2.

[0047] As shown, Figure 7 The cylindrical placeholder 7 includes a large cylindrical placeholder 73, and the length and outer diameter of the large cylindrical placeholder 73 are not greater than the length and inner diameter of the inner cavity of the rotating main shaft 3. In order to facilitate the flow of lubricating oil in the direction of the circulating section 53 while exchanging heat with the inner wall of the rotating main shaft 3, a plurality of heat exchange grooves 74 are arranged on the outer periphery of the large cylindrical placeholder 73 along the axial direction of the large cylindrical placeholder 73, and counterbores 75 communicating with the heat exchange grooves 74 are respectively machined on the two end faces of the large cylindrical placeholder 73. Other communication forms can also be used.

[0048] The lubricating oil flows out of the speed reducer 2, flows through the heat input section 51, and is divided into different heat exchange grooves 74 from the counterbores 75. The heat exchange grooves 74 guide the lubricating oil from the heat input section 51 to the circulating section 53. The lubricating oil exchanges heat with the inner wall of the rotating main shaft 3 while flowing, and the lubricating oil after heat exchange flows out of the other counterbores 75 communicating with the heat exchange grooves 74 and enters the circulating section 53. Embodiment 4

[0049] Because the water content of the soil in different periods and different regions is different, if the water content of the soil is higher, the demand for heat will increase, and when the deceleration device is used as the first heat source of the soil working part 6, the problem of insufficient heat may occur. In order to make up for this problem that may occur in use, on the basis of embodiment 1, this embodiment provides an alternative or supplementary other heat source for the first heat source, that is, the second heat source can replace the first heat source when the first heat source fails or cannot provide heat input, etc. The second heat source can also provide heat supplement when the first heat source is insufficient in heat exchange. The first heat source and the second heat source are respectively communicated with the independently arranged first circulating channel 5 and the second circulating channel, and the two groups of circulating channels are independent of each other.

[0050] As shown in Figure 8 and Figure 9 , the second heat source obtains heat from the heat generating device other than the deceleration device, and in this embodiment, the heat exchange section 52 in the second circulating channel is still located in the cavity of the rotating main shaft 3. Because the first heat source and the second heat source are two groups of heat sources arranged independently and in parallel, the cavity of the rotating main shaft 3 is divided into two independent and non-communicating chambers by the filler, and the first heat source and the second heat source are respectively communicated with a corresponding one of the chambers.

[0051] The heat input section 51 in the second circulating channel is located between the outflow end of the second heat source heat conducting working medium and the rotating main shaft 3, and according to different connection modes of the rotating main shaft 3 and the speed reducer 2, the specific installation position of the heat input section 51 can be different. On the basis of the foregoing embodiments, a rotating sealing sleeve 8 is rotatably arranged on the outer wall of the rotating main shaft 3 in this embodiment. As shown in Figure 8 , a clamping groove for positioning the rotating sealing sleeve 8 is processed on the outer wall of the rotating main shaft 3 in the circumferential direction, the rotating sealing sleeve 8 is in rotational cooperation with the rotating main shaft 3, and a sealing ring for preventing leakage is arranged between the cooperation surfaces. Because the inner wall of the rotating sealing sleeve 8 is an inner concave cavity, an annular transition cavity is formed after cooperation with the clamping groove of the rotating main shaft 3, and the annular transition cavity is the heat input section 51 of this embodiment.

[0052] A communication hole communicating with the heat exchange section 52 is processed in the annular transition cavity, and the communication hole is located in the annular transition cavity. The annular transition cavity is also communicated with the outflow end of the heat conducting working medium in the second heat source through a pipeline. After the heat conducting working medium in the second heat source enters the annular transition cavity, it flows into the corresponding cavity of the rotating main shaft 3, and the same structure of the rotating sealing sleeve 8 is also arranged at a proper position on the other end of the rotating main shaft 3, which is used to guide the heat exchanged heat conducting working medium back to the second heat source. The structure of the annular transition cavity is a prior art, and the structure principle is the same as that of the hydraulic rotary joint. Because this part is not the technical improvement point of this embodiment, it will not be described in detail here.

[0053] The second heat source is a heat source for heating the heat-conducting medium, which includes but is not limited to a heat exchange box added to the frame 1 for heating the heat-conducting medium. The heat-conducting medium in the heat exchange box is heated, and the heated heat-conducting medium flows into the second circulation channel, exchanges heat with the rotating main shaft 3, and the heat exchanged according to the heat conduction principle is conducted to the soil working component 6. The heated heat-conducting medium flows back to the heating box for continuous heating. The heating temperature of the heat-conducting medium in the heating box can be adjusted according to the water content of the soil in the working area, and the operation is convenient.

[0054] As a parallel technical solution, the second heat source refers to the heat generated by the heating elements in other devices as a heat source. During the operation of the grading device, the traction vehicle such as a tractor is usually used for traction operation, therefore, the second heat source includes but is not limited to the driving device of the traction vehicle as a heat source and / or the hydraulic system of the traction vehicle or the grading device as a heat source.

[0055] When the tractor engine is used as the second heat source, the heat exchanger is used to replace the radiator on the existing engine, and the second circulation channel is connected in series with at least one heat exchange channel in the heat exchanger, so that the heat-conducting medium in the heat exchanger flows into the cavity of the rotating main shaft 3 for heat exchange, and the heat-conducting medium returns to the heat exchanger after heat exchange, and heat exchange is realized by the circulating heat-conducting medium.

[0056] Similarly, when the hydraulic system is used as the second heat source, the heat exchanger is used to replace the radiator in the existing hydraulic system, and the second circulation channel is connected in series with at least one heat exchange channel in the heat exchanger of the hydraulic system, and the hydraulic oil is used as the heat-conducting medium, and the heat exchange is carried out in the cavity of the rotating main shaft 3, and the hydraulic oil returns to the hydraulic system after heat exchange.

[0057] In addition, the hydraulic system or the engine of the tractor can be used as the second heat source alone, or the hydraulic system, the tractor and the engine can be used as the second heat source together. No matter how many groups of heat sources are used as the second heat source, the second circulation channel corresponding to each heat source is relatively independent.

[0058] The above is only a preferred specific embodiment of the present application, these specific embodiments are different implementations based on the overall concept of the present application, and the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A ground preparation device for separating adhering soil using waste heat, comprising: The invention relates to a soil working device, comprising at least one set of transmission system with a speed reducer and soil working parts (6) for working the soil, the transmission system being used to provide the soil working parts (6) with a suitable rotating speed, and at least one heat source, the heat source taking the soil working parts (6) as a heat exchange surface, characterized in that the heat source takes the speed reducer (2) as a first heat source, and the lubricating oil as a heat exchange medium, and the heat transfer between the heat generating element and the soil working parts (6) is realized through a first circulation channel (5) to increase the surface temperature of the soil working parts (6) during working, and then the clay layer in contact with the soil working parts is gradually dried and peeled off, the first circulation channel (5) comprises a heat input section (51), a heat exchange section (52) and a circulation section (53) arranged in sequence, the heat input section (51) is a passage for leading the heat exchange medium in the heat generating element out of the cavity of the rotating main shaft (3); the heat exchange section (52) is a cavity in the rotating main shaft (3) for conducting the heat of the heat exchange medium to the soil working parts (6); and the circulation section (53) is a loop between the rotating main shaft (3) and the heat generating element for making the heat exchange medium in the rotating main shaft (3) flow back to the heat generating element.

2. A ground preparation device for separating adhering soil using waste heat according to claim 1, characterized in that: The soil working parts (6) are fixed on the rotating main shaft (3), and the rotating main shaft (3) is a metal cylinder with a cavity.

3. A ground preparation device for separating adhering soil using waste heat according to claim 2, characterized in that: The first circulation channel (5) leads the heat exchange medium out of the heat generating element and through the cavity of the rotating main shaft (3).

4. The ground breaking device for separating adhered soil using waste heat according to claim 1, wherein: A filler is arranged in the cavity of the rotating main shaft (3) to reduce the volume of the heat exchange medium.

5. A ground preparation device for separating adhering soil using waste heat according to claim 4, characterized in that: The overall volume of the filler is smaller than the volume of the cavity of the rotating main shaft (3), and a channel for the heat exchange medium to flow is formed between the filler and the inner wall of the rotating main shaft (3).

6. A ground preparation device for separating adhering soil using waste heat according to claim 5, characterized in that: The soil working parts (6) can obtain heat from the first heat source and / or a second heat source, the second heat source can replace the first heat source when the first heat source fails or cannot provide heat input, and the second heat source can provide heat supplement when the first heat source cannot provide sufficient heat exchange, the second heat source obtains heat from a heat generating device other than the speed reducer.

7. A ground preparation apparatus for separating adhering soil using waste heat according to claim 6, characterized in that: The second heat source transfers heat to the soil working parts (6) through a second circulation channel, and the second circulation channel and the first circulation channel (5) are independent channels.

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