Power transmission device of agricultural implement

Abstract

The utility model discloses a power transmission device of an agricultural implement, which comprises a transmission shaft, a mounting disc is fixed at one end of the transmission shaft, a mounting screw rod penetrates through one side of the mounting disc, a lower connecting disc is fixed at the other end of the transmission shaft, a belt pulley is fixed at one side of a connecting column, and stop blocks are fixed at two ends of the belt pulley. A bevel gear is fixed to one side of the check block, and the outer side of the belt wheel is sleeved with a belt. According to the pre-folding device, the connecting base, the pre-folding rods, the pre-folding grooves and the upper connecting disc are used in cooperation, the pre-folding rods are arranged on the connecting base at equal intervals in the using process of the pre-folding device so that stress of the pre-folding rods can be even, the pre-folding grooves are formed in the pre-folding rods, and the torque of power transmission of the transmission shaft of the device can be controlled within a certain range; for example, the device is applied to a ploughing machine hung on the front portion of a tractor, and when stones and the like in a field are ploughed under the condition that the loads are large, the small number of stones with the small weight can be turned up.

Description

Technical Field

[0001] This utility model relates to the technical field of transmission components, specifically a power transmission device for agricultural machinery. Background Technology

[0002] Agricultural machinery is a general term for agricultural machinery and implements. Agricultural machinery refers to various machines used in crop cultivation and animal husbandry, as well as in the initial processing and handling of agricultural and livestock products. In the practical use of agricultural machinery and implements, transmission components are often used to transmit power. For example, implements such as tillers and seeders need to be powered by an engine or motor to transmit power to the front or rear attachments for tilling and sowing. Transmission components refer to the power transmission between machines, or the transmission of mechanical power to the terminal equipment through an intermediate medium. Such transmission methods include chain drive, friction drive, hydraulic drive, gear drive, and belt drive.

[0003] Existing agricultural machinery power transmission devices rarely have pre-break parts installed during use. When tilling or other operations requiring high torque, the power-generating components, such as the engine and drive motor, are easily damaged by heavy loads such as stones in the field. These components are often expensive to repair and are prone to random and uncontrollable damage. Therefore, there is a need to propose a new power transmission device for agricultural machinery. Summary of the Invention

[0004] The purpose of this utility model is to provide a power transmission device for agricultural machinery to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a power transmission device for agricultural machinery, comprising a drive shaft, a mounting plate fixed to one end of the drive shaft, a mounting screw penetrating one side of the mounting plate, a lower connecting plate fixed to the other end of the drive shaft, a fixing hole on one side of the lower connecting plate, a connecting seat on one side of the lower connecting plate, a fixing rod penetrating one side of the connecting seat, a pre-bending rod fixed to one side of the connecting seat, a pre-bending groove on one side of the pre-bending rod, an upper connecting plate fixed to one end of the pre-bending rod, a connecting column fixed to one side of the upper connecting plate, a pulley fixed to one side of the connecting column, stops fixed to both ends of the pulley, a bevel gear fixed to one side of each stop, and a belt sleeved on the outer side of the pulley.

[0006] Preferably, the inner side of the fixing hole and the outer side of the fixing rod are both threaded, and the connecting seat is threadedly connected to the lower connecting plate through the fixing rod.

[0007] Preferably, the pre-bent rods are distributed in a ring-shaped circumference on the connecting seat, and the spacing between the pre-bent rods is equal.

[0008] Preferably, the pulley and the stop are integrally formed, and the side of the stop near the pulley is inclined.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. A power transmission device for agricultural machinery, through the cooperation of a connecting seat, a pre-bending rod, a pre-bending groove, and an upper connecting plate, ensures uniform force distribution on the pre-bending rods by the evenly spaced pre-bending rods on the connecting seat during use. The pre-bending groove on the pre-bending rod allows control over the torque transmitted by the drive shaft within a certain range. For example, when this device is applied to a front-mounted tiller on a tractor, if a heavy load such as stones is encountered during tilling, a smaller number of lighter stones may be turned up, exceeding the pre-bending rod's bearing capacity. The pre-bending rod will then break at the pre-bending groove, preventing damage to components with high maintenance costs, such as the engine and drive motor. Furthermore, the number of pre-bending rods can control the torque load, allowing for application on different agricultural machinery and effectively improving the device's practicality.

[0011] 2. The power transmission device of this agricultural implement, through the setting of fixing holes and fixing rods, concentrates most of the damage in the working conditions to the connecting seat through the pre-bending rod during the use of the device. The connecting seat is threaded to the lower connecting plate through the fixing rod. The threaded connection structure is simple and firmly fixed, which facilitates the disassembly of the connecting seat during maintenance and effectively reduces the labor intensity when disassembling the connecting seat. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the pulley structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the connector structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the cross-sectional structure of the pulley of this utility model;

[0016] Figure 5 This is a front view schematic diagram of the pulley structure of this utility model.

[0017] In the diagram: 1. Drive shaft; 2. Mounting plate; 3. Mounting screw; 4. Lower connecting plate; 5. Fixing hole; 6. Connecting seat; 7. Fixing rod; 8. Pre-folding rod; 9. Pre-folding groove; 10. Upper connecting plate; 11. Connecting column; 12. Pulley; 13. Stop block; 14. Bevel gear; 15. Belt. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5 This utility model provides a technical solution: a power transmission device for agricultural machinery, including a drive shaft 1, a mounting plate 2 fixed to one end of the drive shaft 1, a mounting screw 3 passing through one side of the mounting plate 2, a lower connecting plate 4 fixed to the other end of the drive shaft 1, a fixing hole 5 opened on one side of the lower connecting plate 4, the inner side of the fixing hole 5 and the outer side of the fixing rod 7 are both threaded, a connecting seat 6 is threaded to the lower connecting plate 4 through the fixing rod 7, a connecting seat 6 is provided on one side of the lower connecting plate 4, a fixing rod 7 passes through one side of the connecting seat 6, a pre-bending rod 8 is fixed on one side of the connecting seat 6, the pre-bending rods 8 are distributed in a ring on the connecting seat 6, the spacing between the pre-bending rods 8 is equal, a pre-bending groove 9 is opened on one side of the pre-bending rod 8, an upper connecting plate 10 is fixed to one end of the pre-bending rod 8, and the upper connecting plate 10... A connecting column 11 is fixed on one side of the device. During the use of this device, the pre-bending rods 8 are evenly spaced on the connecting seat 6 to ensure that the force on the pre-bending rods 8 is uniform. The pre-bending rods 8 are provided with pre-bending grooves 9, which can control the torque transmitted by the drive shaft 1 within a certain range. For example, when this device is used on a tractor-mounted tiller, when the load is large, such as stones in the field, a small number of stones will be turned up and exceed the bearing capacity of the pre-bending rods 8. The pre-bending rods 8 will break at the pre-bending grooves 9, preventing damage to components such as the engine and drive motor that are expensive to maintain and repair. The number of pre-bending rods 8 can be used to control the torque bearing capacity, making it suitable for different agricultural machines and effectively improving the practicality of the device.

[0020] Please see Figure 1-5 A pulley 12 is fixed to one side of the connecting column 11. A stop block 13 is fixed to both ends of the pulley 12. A bevel gear 14 is fixed to one side of the stop block 13. A belt 15 is fitted on the outside of the pulley 12. The pulley 12 and the stop block 13 are integrally formed. The side of the stop block 13 near the pulley 12 is inclined. In the application of this device, the inclined design of the side of the stop block 13 near the pulley 12 can prevent the belt 15 from running off-center, effectively improving the practicality of the device.

[0021] Working principle: When using the power transmission device of this agricultural implement, first install the device in a suitable position, for example, screw the mounting screw 3 on the mounting plate 2 into the connector on the tractor's power output shaft to drive the attached tiller. The pulley 12 and bevel gear 14 can be adapted to tillers with different drive methods. During the use of this device, the pre-bending rods 8 are evenly spaced on the connecting seat 6 to ensure uniform force on the pre-bending rods 8. The pre-bending rods 8 are provided with pre-bending grooves 9, which can control the torque transmitted by the drive shaft 1 of this device within a certain range. For example, this device is used on a front-mounted tiller of a tractor. When tilling the field and encountering a large load such as stones, the load is small and the weight is light. If the stones are overturned and exceed the bearing capacity of the pre-bending rod 8, the pre-bending rod 8 will break at the pre-bending groove 9, preventing damage to components with high maintenance and repair costs such as the engine and drive motor. Furthermore, the number of pre-bending rods 8 can be used to control the amount of torque that can be applied to different agricultural machines, effectively improving the practicality of the device. During the use of this device, the pre-bending rods 8 concentrate most of the damage in the connecting seat 6. The connecting seat 6 is connected to the lower connecting plate 4 by a threaded connection through the fixing rod 7. The threaded connection structure is simple and firmly fixed, making it easy to disassemble the connecting seat 6 during maintenance and effectively reducing the labor intensity when disassembling the connecting seat 6. In this way, the use of the power transmission device of this agricultural implement is completed.

[0022] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0023] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power transmission device for agricultural machinery, comprising a drive shaft (1), characterized in that: One end of the drive shaft (1) is fixed with a mounting plate (2), and a mounting screw (3) passes through one side of the mounting plate (2). The other end of the drive shaft (1) is fixed with a lower connecting plate (4). A fixing hole (5) is provided on one side of the lower connecting plate (4). A connecting seat (6) is provided on one side of the lower connecting plate (4). A fixing rod (7) passes through one side of the connecting seat (6). A pre-bending rod (8) is fixed on one side of the connecting seat (6). A pre-bending groove (9) is provided on one side of the pre-bending rod (8). An upper connecting plate (10) is fixed at one end of the pre-bending rod (8). A connecting column (11) is fixed on one side of the upper connecting plate (10). A pulley (12) is fixed on one side of the connecting column (11). Both ends of the pulley (12) are fixed with a stop block (13). A bevel gear (14) is fixed on one side of the stop block (13). A belt (15) is sleeved on the outside of the pulley (12).

2. The power transmission device for agricultural machinery according to claim 1, characterized in that, The inner side of the fixing hole (5) and the outer side of the fixing rod (7) are both threaded. The connecting seat (6) is threadedly connected to the lower connecting plate (4) through the fixing rod (7).

3. The power transmission device for agricultural machinery according to claim 1, characterized in that, The pre-bent rods (8) are distributed in a ring on the connecting seat (6), and the spacing between the pre-bent rods (8) is equal.

4. The power transmission device for agricultural machinery according to claim 1, characterized in that, The pulley (12) and the stop block (13) are integrally formed, and the side of the stop block (13) near the pulley (12) is inclined.

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