Transmission case for driving harrow

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a transmission case for a driving harrow. Comprising a box body, a gear is rotationally connected in the box body, the gear is positioned through a flange shaft, the gear comprises a driving gear driven by an external gear box and a plurality of driven gears arranged on the two sides of the driving gear, and the driven gears are linearly arranged in the length direction of the box body and meshed with one another. Each driven gear is connected with rake teeth used for soil preparation, box covers used for preventing dust from entering the box body are welded to the two ends of the box body, a gearbox mounting plate used for being connected with an external gearbox is welded to the upper surface of the box body, and a positioning seat used for positioning a flange shaft is welded to the interior of the box body. According to the transmission case for the driving harrow, the connection stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a transmission box for driving a harrow. Background Art

[0002] Power harrows widely used in agricultural production are mainly divided into reciprocating, horizontal rotary and vertical rotary types. In northern my country, horizontal rotary power harrows are widely used due to soil characteristics. However, the transmission box of traditional horizontal rotary power harrows is usually connected by bolts. In this way, when the harrow teeth loosen the soil, the bolts are easily loosened due to the large resistance, which leads to unstable structural connection.

[0003] For example, the Chinese patent authorization announcement number CN217406960U, entitled "A transmission box for driving a rake", includes two parallel and spaced baffles, a lower box body is arranged between the two baffles, the two ends of the lower box body are respectively sealed and fixedly connected with the corresponding baffles, a box body upper cover plate is detachably installed above the lower box body, a lubrication cavity is arranged between the box body upper cover plate and the lower box body, bolts are inserted in the first connection hole and the third connection hole, and the connection is fixed by the bolts, and bolts are inserted in the fourth connection hole and the fifth connection hole, and the inspection cover is fixedly installed on the box body upper cover plate by the bolts. The disadvantage is that the overall box body is connected by bolts, and the bolts are easy to loosen, resulting in an unstable structural connection. Utility Model Content

[0004] Aiming at the disadvantage that the whole box body of the existing driving rake transmission box is connected by bolts, the bolts are easy to loosen during operation, resulting in an unstable structural connection, the purpose of the utility model is to provide a driving rake transmission box to improve the connection stability.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transmission box for driving a rake, comprising a box body, wherein a gear is rotatably connected in the box body, and the gear is positioned by a flange shaft. The gear comprises a driving gear driven by an external gear box and a plurality of driven gears arranged on both sides of the driving gear, and the driven gears are linearly arranged in the length direction of the box body and mesh with each other, and each driven gear is connected to a rake tooth for leveling the land, and box covers for preventing dust from entering the box body are welded at both ends of the box body, a gear box mounting plate for connecting to an external gear box is welded on the upper surface of the box body, and a positioning seat for positioning the flange shaft is welded in the box body.

[0006] In this technical solution, the box covers at both ends of the box body are tightly combined with the box body by welding, which effectively prevents dust and other impurities from entering the box body, ensures the safety and cleanliness of precision components such as gears inside the transmission box, and increases the connection strength between the box cover and the box body. The gear box mounting plate on the upper surface of the box body is welded, which greatly enhances the connection strength between the external gear box and the transmission box, allowing the entire system to operate stably during operation and reducing the risk of loosening or breakage caused by vibration. The positioning seat welded in the box body provides a stable support for the flange shaft, ensuring the precise positioning and stable transmission of the gears, and further improving the reliability and durability of the entire transmission system. The box cover, gear box mounting plate, positioning seat and box body are all connected by welding, which greatly improves the stability of the connection.

[0007] The utility model is further configured as follows: a vent column for maintaining internal air pressure balance is welded on the upper surface of the box, and a vent plug is provided on the vent column. The vent column is equipped with a vent plug, and its main function is to maintain the air pressure balance inside the transmission box. Through the design of the vent column and the vent plug, the abnormal pressure inside the box caused by temperature changes or air pressure fluctuations can be effectively prevented, thereby ensuring the stable operation of the transmission box and extending its service life. At the same time, the vent column is welded to the box, which increases the connection strength between the vent column and the box, making the connection stable.

[0008] The utility model is further configured as follows: a guard plate is welded at the bottom of the box body to prevent foreign objects from entering the box body, so as to prevent the internal components of the box body from being damaged. On the one hand, the guard plate can effectively prevent foreign objects on the ground, such as stones, debris, etc., from entering the box body, thereby avoiding potential damage to the internal precision components; on the other hand, it also enhances the overall structural strength of the box body. Through this protective measure, the transmission box can operate more stably and safely in the complex and changeable farmland environment, significantly improving its durability and reliability, reducing maintenance costs, and extending the service life of the equipment.

[0009] The utility model is further configured as follows: a plurality of brackets are welded at intervals on both sides of the box body along the width direction, and the brackets are used to connect to the tractor so that the transmission box can be installed on the tractor. The brackets are used to be firmly connected to the tractor, so that the transmission box can be firmly installed on the tractor. Through this design, a reliable mechanical connection is formed between the transmission box and the tractor, ensuring that during the entire operation process, the transmission box can closely follow the movement of the tractor and will not fall off or be damaged due to vibration or impact. This design not only enhances the stability and safety of the transmission box during use, but also greatly improves the operating efficiency, allowing users to farm more efficiently.

[0010] The utility model is further configured as follows: the positioning seat includes an upper positioning seat located at the upper part of the flange shaft and a lower positioning seat located at the lower part of the flange shaft, and the flange shaft is connected to the housing through an upper bearing and a lower bearing to stabilize the positioning of the flange shaft. This dual positioning structure of the upper positioning seat and the lower positioning seat provides a stable support for the flange shaft. At the same time, the flange shaft is tightly connected to the housing through the upper bearing and the lower bearing, further enhancing the positioning stability of the flange shaft. This design ensures that the flange shaft can always maintain a stable positioning during the operation of the transmission box, thereby improving the transmission efficiency and overall mechanical performance. In addition, the stable positioning of the flange shaft also helps to extend the service life of the transmission box and reduce wear and failure caused by vibration or offset.

[0011] The utility model is further configured as follows: the flange shaft includes a first flange shaft for positioning the driving gear and a second flange shaft for positioning the driven gear. The first flange shaft for positioning the driving gear and the second flange shaft for positioning the driven gear are distinguished. This dual-shaft design not only improves the positioning accuracy of the gears, but also effectively ensures the stability and efficiency during the transmission process. By positioning the driving gear and the driven gear separately through a special flange shaft, each gear can be operated in the best position, thereby optimizing the performance of the entire transmission system. In addition, this design also helps to reduce friction and wear between gears and extend the service life of the equipment.

[0012] The utility model is further configured as follows: the housing is filled with lubricating oil for lubricating gears, and the bottom of the housing is installed with a first oil seal and a second oil seal, both of which are arranged below the lower bearing. The housing is filled with special lubricating oil, which can effectively lubricate the gears and ensure the smoothness and efficiency of the transmission process. More importantly, in order to prevent the lubricating oil from flowing out and to prevent dust, a first oil seal and a second oil seal of different specifications are specially installed at the bottom of the housing. Both oil seals are carefully arranged below the lower bearing, forming a solid line of defense to ensure that the lubricating oil will not leak out, and can also effectively block the intrusion of external dust. Such a design not only ensures the cleanliness and lubrication of the interior of the transmission box, but also greatly improves the service life and stability of the equipment.

[0013] The utility model is further configured such that the rake teeth are connected to the flange shaft by bolts, so as to facilitate the replacement of the rake teeth. The rake teeth and the flange shaft are cleverly connected together by bolts, which not only ensures the stability of the connection, but also greatly improves the convenience of replacing the rake teeth. In practical applications, this design means that when the rake teeth are worn or damaged due to long-term use, users can easily replace them without overhauling or replacing the entire transmission box. This not only reduces maintenance costs, but also greatly reduces downtime caused by maintenance, thereby improving agricultural production efficiency.

[0014] The utility model is further configured as follows: the box cover includes an outer cover and an inner cover, a through hole is provided in the middle of the inner cover, the outer cover and the inner cover are connected by bolts, and the inner cover is welded to the box body. The box cover is composed of an outer cover and an inner cover. This double-layer design improves the sealing and structural strength of the box body. A through hole is cleverly provided in the middle of the inner cover, which is convenient for inspection and maintenance of the inside of the box body, and a rubber pad for sealing is provided between the inner cover and the outer cover. At the same time, the outer cover and the inner cover are tightly connected by bolts. This connection method not only ensures the stability of the box cover, but also facilitates disassembly and installation when necessary. In addition, the inner cover is connected to the box body by welding, which further enhances the stability and sealing of the overall structure. Such a design not only improves the safety and durability of the transmission box, but also provides convenience for its daily maintenance and care.

[0015] The advantages of the present invention are: (1) The box covers at both ends of the box body are tightly combined with the box body by welding, which effectively prevents dust and other impurities from entering the box body, ensures the safety and cleanliness of precision components such as gears inside the transmission box, and increases the connection strength between the box cover and the box body; (2) The gear box mounting plate on the upper surface of the box body is welded, which greatly enhances the connection strength between the external gear box and the transmission box, allowing the entire system to operate stably during operation and reducing the risk of loosening or breakage caused by vibration; (3) The positioning seat welded in the box body provides a stable support for the flange shaft, ensuring the precise positioning and stable transmission of the gears, further improving the reliability and durability of the entire transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 A top view of a transmission box in one embodiment of the utility model;

[0018] Figure 3 A cross-sectional view of a transmission box in one embodiment of the utility model;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0020] In the figure: 1. box body; 11. box cover; 111. outer cover; 112. inner cover; 113. through hole; 12. gear box mounting plate; 13. positioning seat; 131. upper positioning seat; 132. lower positioning seat; 14. breathable column; 16. guard plate; 17. bracket; 2. external gear box; 31. driving gear; 32. driven gear; 41. first flange shaft; 42. second flange shaft; 61. upper bearing; 62. lower bearing; 71. first oil seal; 72. second oil seal; 8. rake teeth. DETAILED DESCRIPTION

[0021] In the description of this embodiment, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore, cannot be understood as a limitation on the utility model. In addition, if the terms "first", "second", and "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] The utility model is further described below in conjunction with the accompanying drawings of the specification.

[0023] Embodiment 1:

[0024] Reference Figures 1 to 4 A transmission box for driving a rake comprises a box body 1, wherein gears are rotatably connected inside the box body 1, wherein the gears are positioned by a flange shaft, wherein the gears comprise a driving gear 31 driven by an external gear box 2 and a plurality of driven gears 32 arranged on both sides of the driving gear 31, wherein the driven gears 32 are linearly arranged in the length direction of the box body 1 and mesh with each other, wherein each driven gear 32 is connected to a rake tooth 8 for leveling the land, wherein box covers 11 for preventing dust from entering the interior of the box body 1 are welded at both ends of the box body 1, wherein a gear box mounting plate 12 for connecting to the external gear box 2 is welded on the upper surface of the box body 1, and a positioning seat 13 for positioning the flange shaft is welded inside the box body 1.

[0025] In this embodiment, the box cover 11 at both ends of the box body 1 is tightly combined with the box body 1 by welding, which effectively prevents dust and other impurities from entering the interior of the box body 1, ensures the safety and cleanliness of precision components such as gears inside the transmission box, and increases the connection strength between the box cover 11 and the box body 1. The gear box mounting plate 12 on the upper surface of the box body 1 is welded, which greatly enhances the connection strength between the external gear box 2 and the transmission box, allowing the entire system to operate stably during operation and reducing the risk of loosening or breakage caused by vibration. The positioning seat 13 welded in the box body 1 provides a stable support for the flange shaft, ensuring the precise positioning and stable transmission of the gears, and further improving the reliability and durability of the entire transmission system. The box cover 11, the gear box mounting plate 12, the positioning seat 13 and the box body 1 are all connected by welding, which greatly improves the stability of the connection.

[0026] refer to Figures 1 to 3, a vent column 14 for maintaining internal air pressure balance is welded on the upper surface of the housing 1, and a vent plug is provided on the vent column 14. The vent column 14 is equipped with a vent plug, and its main function is to maintain the air pressure balance inside the transmission box. Through the design of the vent column 14 and the vent plug, the abnormal internal pressure of the housing 1 caused by temperature changes or air pressure fluctuations can be effectively prevented, thereby ensuring the stable operation of the transmission box and extending its service life. At the same time, the vent column 14 is welded to the housing 1, which increases the connection strength between the vent column 14 and the housing 1, making the connection stable.

[0027] The bottom of the housing 1 is welded with a guard plate 16 for preventing foreign objects from entering the housing 1, so as to prevent the internal components of the housing 1 from being damaged. On the one hand, the guard plate 16 can effectively prevent foreign objects on the ground, such as stones and debris, from entering the housing 1, thereby avoiding potential damage to the internal precision components; on the other hand, it also enhances the overall structural strength of the housing 1. Through this protective measure, the transmission box can operate more stably and safely in the complex and changeable farmland environment, significantly improving its durability and reliability, reducing maintenance costs, and extending the service life of the equipment.

[0028] It is understandable that the internal components are structures such as the driving gear 31, the driven gear 32, the flange shaft, the bearings, and the lubricating oil. Foreign matter entering may damage the gears, affecting their normal meshing and rotation. If foreign matter enters and contacts the flange shaft, it may cause the shaft to bend or be damaged, thereby affecting the alignment and rotation efficiency of the gears. Foreign matter may cause wear or blockage of the bearings, resulting in poor rotation or premature failure. Foreign matter entering may contaminate the lubricating oil, reduce its lubrication effect, and even cause oil channel blockage.

[0029] refer to Figures 1 to 3 , the box body 1 is welded with a plurality of brackets 17 at intervals on both sides along the width direction, and the brackets 17 are used to connect to the tractor so that the transmission box can be installed on the tractor. The brackets 17 are used to connect firmly with the tractor so that the transmission box can be firmly installed on the tractor. Through this design, a reliable mechanical connection is formed between the transmission box and the tractor, ensuring that during the entire operation process, the transmission box can closely follow the movement of the tractor and will not fall off or be damaged due to vibration or impact. This design not only enhances the stability and safety of the transmission box during use, but also greatly improves the operating efficiency, allowing users to farm more efficiently.

[0030] In one embodiment of the present invention, reference Figures 1 to 3, the positioning seat 13 includes an upper positioning seat 131 located at the upper part of the flange shaft and a lower positioning seat 132 located at the lower part of the flange shaft. The flange shaft is connected to the housing 1 through an upper bearing 61 and a lower bearing 62 to stabilize the positioning of the flange shaft. This double positioning structure of the upper positioning seat 131 and the lower positioning seat 132 provides a stable support for the flange shaft. At the same time, the flange shaft is tightly connected to the housing 1 through the upper bearing 61 and the lower bearing 62, which further enhances the positioning stability of the flange shaft. This design ensures that the flange shaft can always maintain a stable positioning during the operation of the transmission box, thereby improving the transmission efficiency and overall mechanical properties. In addition, the stable positioning of the flange shaft also helps to extend the service life of the transmission box and reduce wear and failure caused by vibration or offset.

[0031] Preferably, the flange shaft includes a first flange shaft 41 for positioning the driving gear 31 and a second flange shaft 42 for positioning the driven gear 32. The first flange shaft 41 for positioning the driving gear 31 and the second flange shaft 42 for positioning the driven gear 32 are distinguished. This dual-shaft design not only improves the positioning accuracy of the gears, but also effectively ensures the stability and efficiency during the transmission process. By positioning the driving gear 31 and the driven gear 32 respectively through a special flange shaft, each gear can be operated in the best position, thereby optimizing the performance of the entire transmission system. In addition, this design also helps to reduce friction and wear between gears and extend the service life of the equipment.

[0032] In one embodiment of the present invention, reference Figures 1 to 3 , the housing 1 is filled with lubricating oil for lubricating gears, and the bottom of the housing 1 is installed with a first oil seal 71 and a second oil seal 72, both of which are arranged below the lower bearing 62. The housing 1 is filled with special lubricating oil, which can effectively lubricate the gears and ensure the smoothness and efficiency of the transmission process. More importantly, in order to prevent the lubricating oil from flowing out and to prevent dust, the bottom of the housing 1 is specially installed with a first oil seal 71 and a second oil seal 72 of different specifications. Both oil seals are carefully arranged below the lower bearing 62, forming a solid line of defense to ensure that the lubricating oil will not leak out, and can also effectively block the invasion of external dust. Such a design not only ensures the cleanliness and lubrication of the inside of the transmission box, but also greatly improves the service life and stability of the equipment.

[0033] In one embodiment of the present invention, reference Figure 2 , Figure 3, the rake teeth 8 are connected to the flange shaft by bolts, so as to facilitate the replacement of the rake teeth 8. The rake teeth 8 and the flange shaft are cleverly connected together by bolts, which not only ensures the stability of the connection, but also greatly improves the convenience of replacing the rake teeth. In practical applications, this design means that when the rake teeth 8 are worn or damaged due to long-term use, the user can easily replace them without overhauling or replacing the entire transmission box. This not only reduces maintenance costs, but also greatly reduces downtime caused by maintenance, thereby improving agricultural production efficiency.

[0034] Preferably, the box cover 11 includes an outer cover 111 and an inner cover 112, a through hole 113 is provided in the middle of the inner cover 112, the outer cover 111 and the inner cover 112 are connected by bolts, and the inner cover 112 is welded to the box body 1. The box cover 11 is composed of an outer cover 111 and an inner cover 112. This double-layer design improves the sealing and structural strength of the box body 1. A through hole 113 is cleverly provided in the middle of the inner cover 112, which is convenient for inspection and maintenance of the inside of the box body 1. A rubber pad for sealing is provided between the inner cover and the outer cover. At the same time, the outer cover 111 and the inner cover 112 are tightly connected by bolts. This connection method not only ensures the stability of the box cover 11, but also facilitates disassembly and installation when necessary. In addition, the inner cover 112 is connected to the box body 1 by welding, which further enhances the stability and sealing of the overall structure. Such a design not only improves the safety and durability of the transmission box, but also provides convenience for its daily maintenance and maintenance.

[0035] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. A transmission box for driving a rake, comprising a box body, wherein a gear is rotatably connected in the box body, wherein the gear is positioned by a flange shaft, wherein the gear comprises a driving gear driven by an external gear box and a plurality of driven gears arranged on both sides of the driving gear, wherein the driven gears are linearly arranged in the length direction of the box body and mesh with each other, wherein each driven gear is connected to a rake tooth for leveling the ground, wherein: Box covers for preventing dust from entering the box body are welded at both ends of the box body, a gear box mounting plate for connecting an external gear box is welded on the upper surface of the box body, and a positioning seat for positioning the flange shaft is welded inside the box body.

2. A transmission box for driving a rake according to claim 1, characterized in that: A ventilation column for maintaining internal air pressure balance is welded on the upper surface of the box body, and a ventilation plug is provided on the ventilation column.

3. A transmission box for driving a rake according to claim 1, characterized in that: A guard plate is welded at the bottom of the box body to prevent foreign objects from entering the box body, so as to prevent the internal components of the box body from being damaged.

4. A transmission box for driving a rake according to claim 1, characterized in that: A plurality of brackets are welded at intervals on both sides of the box body along the width direction, and the brackets are used to connect to the tractor so that the transmission box can be installed on the tractor.

5. A transmission box for driving a rake according to claim 1, 2, 3 or 4, characterized in that: The positioning seat comprises an upper positioning seat located at the upper part of the flange shaft and a lower positioning seat located at the lower part of the flange shaft. The flange shaft is connected to the box body through an upper bearing and a lower bearing to ensure stable positioning of the flange shaft.

6. A transmission box for driving a rake according to claim 5, characterized in that: The flange shaft includes a first flange shaft for positioning the driving gear and a second flange shaft for positioning the driven gear.

7. A transmission box for driving a rake according to claim 6, characterized in that: The box body is filled with lubricating oil for lubricating gears, and a first oil seal and a second oil seal are installed at the bottom of the box body. The first oil seal and the second oil seal are both arranged below the lower bearing.

8. A transmission box for driving a rake according to claim 1, characterized in that: The rake teeth are connected to the flange shaft by bolts, so as to facilitate the replacement of the rake teeth.

9. A transmission box for driving a rake according to claim 1, characterized in that: The box cover comprises an outer cover and an inner cover, a through hole is arranged in the middle of the inner cover, the outer cover and the inner cover are connected by bolts, and the inner cover is welded to the box body.

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