Disc harrow blade angle adjusting device

Abstract

The utility model discloses a disc harrow blade angle adjusting device, and belongs to the field of agricultural machinery, the angle adjusting device comprises a harrow group cross beam, a plurality of harrow legs are equidistantly arranged on the harrow group cross beam along the length direction of the harrow group cross beam, disc harrow blades are fixedly arranged at the lower ends of the harrow legs, and an angle adjusting mechanism is arranged on the harrow group cross beam; the angle adjusting mechanism comprises a first rack arranged at the upper end of the harrow group cross beam, a driven gear fixedly arranged at the top of the harrow leg in a sleeving mode and connected with the first rack in an engaged mode, and a driving piece used for driving the first rack to move in the length direction of the harrow group cross beam. Through the linkage design of the gear and the rack, synchronous angle adjustment of the multiple disc harrow blades is achieved, the tedious operation of adjustment one by one in the prior art is avoided, and the adjustment efficiency is remarkably improved; a mechanical transmission structure can ensure the precision and stability of angle adjustment, and the angle adjustment requirements of different farming scenes are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural machinery, and particularly relates to a disc harrow blade angle adjusting device. BACKGROUND

[0002] The disc harrow is an important machine for plowing land and loosening soil in agricultural production. By adjusting the inclination angle of the disc harrow blade, different soil textures, plowing depths and agricultural requirements can be adapted, which plays a key role in improving soil structure and promoting plant growth.

[0003] In the prior art, a disc harrow with adjustable inclination angle is disclosed in Chinese Patent No. CN116530239A. The disc harrow is provided with a shaft sleeve, an angle positioning plate and an angle adjusting plate on the harrow group cross beam. The inclination angle of the disc harrow blade is adjusted by means of a locking bolt penetrating the upper positioning hole and the lower positioning hole. This scheme has the advantages of flexible adjustment, perfect design and convenient installation, and can meet the use requirements of the disc harrow in different occasions.

[0004] However, the above-mentioned prior art still has some deficiencies. When adjusting the angle of the disc harrow blade, each angle adjusting plate corresponding to each harrow blade needs to be operated individually. That is, the single lower positioning hole is made to coincide with the upper positioning hole by rotating the angle adjusting plate, and then the locking bolt is screwed in one by one for fixation. This adjustment method needs to be operated one by one for multiple harrow blades, and cannot realize the synchronous adjustment of the angles of multiple harrow blades, resulting in a tedious adjustment process and low efficiency. Especially in the face of large-area plowing scenarios, it is difficult to meet the efficient and large-scale operation requirements of modern agriculture.

[0005] Therefore, the present application provides a disc harrow blade angle adjusting device to solve the above-mentioned problems. CONTENT OF THE UTILITY MODEL

[0006] The present application provides a disc harrow blade angle adjusting device, which aims to solve the problems of the prior art that the existing disc harrow blade angle adjusting method is tedious, needs to be operated one by one and cannot adjust the angles of multiple harrow blades simultaneously, resulting in low adjustment efficiency.

[0007] To achieve the above object, the application provides the following technical scheme: A disc harrow blade angle adjusting device, comprising a harrow group beam, a plurality of harrow legs are equidistantly arranged on the harrow group beam along the length direction of the harrow group beam, a disc harrow blade is fixedly arranged at the lower end of the harrow leg, and an angle adjusting mechanism for adjusting the angle of the disc harrow blade is arranged on the harrow group beam; the angle adjusting mechanism comprises a first gear rack arranged at the upper end of the harrow group beam, a driven gear fixedly sleeved on the top of the harrow leg and in meshing connection with the first gear rack, and a driving member for driving the first gear rack to move along the length direction of the harrow group beam. During adjustment, the driving member drives the first gear rack to move along the length direction of the harrow group beam, the first gear rack is in meshing connection with the driven gear, and the driven gear is driven to rotate; the driven gear is fixedly sleeved on the top of the harrow leg, thereby driving the harrow leg to rotate, and finally the inclination angle of the disc harrow blade is adjusted. Since the plurality of harrow legs are in meshing connection with the first gear rack through the driven gear, the angle of all the disc harrow blades can be synchronously adjusted through one driving operation.

[0008] Preferably, in order to ensure the stability of the angle adjustment of the disc harrow blade, the driving member comprises a driving plate fixedly connected to the upper end of the first gear rack in a symmetrical manner, a horizontal groove is formed in the driving plate, a second gear rack is fixedly connected to the bottom of the horizontal groove, a transmission gear in rotational connection with the harrow group beam is arranged at the top of the horizontal groove, the transmission gear is in meshing connection with the second gear rack, and one end of the shaft of one of the transmission gears is fixedly connected to a driving motor fixedly arranged on the harrow group beam. The driving plate, the second gear rack and the transmission gear arranged in the horizontal groove in a symmetrical manner form a stable horizontal transmission structure, so that the first gear rack is prevented from being warped or deviated during movement, and the stability of the angle adjustment process is ensured; the rigid transmission mode of the gear and the rack can provide reliable driving force, and the position after adjustment is firmly locked, so that the angle stability of the disc harrow blade during work is improved.

[0009] Preferably, in order to facilitate the installation of the driving motor, a motor support for supporting the driving motor is fixedly connected to the outer side wall of the harrow group beam, and the driving motor is fixedly installed on the motor support through bolts. The motor support provides a stable installation support structure for the driving motor, the driving motor is detachably fixed through bolt connection, and the installation, debugging and later maintenance of the equipment are facilitated; the support structure can disperse the vibration during the operation of the motor, and the reliability of the overall mechanism is improved.

[0010] Preferably, in order to further improve the stability of the disc harrow blade after angle adjustment, the driving motor is a worm gear reducer motor. The worm gear reducer motor has a self-locking function, can automatically lock the position of the transmission gear after the angle adjustment is completed, prevents the angle of the disc harrow blade from being deviated due to external forces such as soil resistance, and further improves the stability after the angle adjustment; the reduction characteristic can amplify the driving torque, and meets the adjustment requirement under large load.

[0011] Preferably, in order to facilitate the sealing of the opening at the upper end of the harrow group beam: the upper end of the harrow group beam is provided with a sealing cover fixed by bolts. The sealing cover is fixed on the upper end of the harrow group beam by bolts, which can seal and protect the angle adjusting mechanism inside the beam, prevent impurities such as soil and rainwater from entering the inside of the beam and causing component wear or rust; the detachable design facilitates the maintenance or replacement of internal components in the later period, improving the maintenance convenience of the equipment.

[0012] Preferably, in order to improve the sealing of the connection between the harrow group beam and the sealing cover: the upper end side of the harrow group beam is fixedly provided with a sealing ring for sealing the gap between the harrow group beam and the sealing cover. The sealing ring is arranged on the upper end side of the harrow group beam, which can fill the slight gap between the sealing cover and the beam, further improve the sealing performance of the connection part, effectively prevent foreign matter from entering the inside of the beam, and prolong the service life of the angle adjusting mechanism.

[0013] The present application realizes the synchronous adjustment of the angles of multiple disc harrow blades through the linkage design of the gear and rack, avoids the tedious operation of adjusting one by one in the prior art, and significantly improves the adjustment efficiency; the mechanical transmission structure can ensure the accuracy and stability of the angle adjustment, and adapt to the angle adjustment requirements of different plowing scenes.

[0014] The present application forms a stable horizontal transmission structure through the cooperation of the symmetrically arranged driving plate, the second rack in the horizontal groove, and the transmission gear, avoids the warping or deviation of the first rack during movement, and ensures the stability of the angle adjustment process; the rigid transmission mode of the gear and rack can provide reliable driving force, and the adjusted position is firmly locked, improving the angle stability of the disc harrow blade during work. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of a disc harrow blade angle adjusting device;

[0016] Figure 2 is a schematic view of the other side of the structure in Figure 1 ;

[0017] Figure 3 is a structural schematic view of the inside of the harrow group beam;

[0018] Figure 4 is an enlarged schematic view of the angle adjusting mechanism in Figure 3 ;

[0019] In the figure:

[0020] 1. Rake beam; 11. Motor bracket; 2. Rake leg; 3. Disc rake blade; 4. Angle adjustment mechanism; 41. First rack; 42. Driven gear; 43. Drive component; 431. Drive plate; 432. Horizontal groove; 433. Second rack; 434. Transmission gear; 435. Drive motor; 5. Sealing cover; 6. Sealing ring. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] Example 1

[0023] This embodiment provides a disc rake blade angle adjustment device, such as... Figures 1-4 As shown, the angle adjustment device includes a harrow beam 1, with several harrow legs 2 evenly spaced along its length. Disc harrow blades 3 are fixedly mounted at the lower ends of the harrow legs 2. An angle adjustment mechanism 4 for adjusting the angle of the disc harrow blades 3 is mounted on the harrow beam 1. The angle adjustment mechanism 4 includes a first rack 41 mounted on the upper end of the harrow beam 1, a driven gear 42 fixedly sleeved on the top of the harrow legs 2 and meshing with the first rack 41, and a drive component 43 for driving the first rack 41 to move along the length of the harrow beam 1. Through the linkage design of the rack and pinion, the angles of multiple disc harrow blades 3 are adjusted synchronously, avoiding the cumbersome operation of adjusting them one by one in the prior art, and significantly improving adjustment efficiency. The mechanical transmission structure ensures the accuracy and stability of angle adjustment, adapting to the angle adjustment needs of different farming scenarios. The driving component 43 drives the first rack 41 to move along the length of the rake beam 1. The first rack 41 meshes with the driven gear 42, causing the driven gear 42 to rotate. The driven gear 42 is fixedly sleeved on the top of the rake leg 2, thereby driving the rake leg 2 to rotate, ultimately realizing the adjustment of the tilt angle of the disc rake blades 3. Since multiple rake legs 2 are all meshed with the first rack 41 through the driven gear 42, the angle of all disc rake blades 3 can be adjusted synchronously through a single driving operation.

[0024] In order to ensure the stability of the angle adjustment of the disc harrow blade 3, the driving member 43 comprises driving plates 431 fixedly connected to the upper ends of the first racks 41, the driving plates 431 are provided with horizontal grooves 432, the bottoms of the horizontal grooves 432 are fixedly connected with second racks 433, the tops of the horizontal grooves 432 are provided with transmission gears 434 rotatably connected with the harrow group cross beams 1, the transmission gears 434 are in meshing connection with the second racks 433, and one end of the shaft of one of the transmission gears 434 is fixedly connected with a driving motor 435 fixedly arranged on the harrow group cross beam 1. The symmetrically arranged driving plates 431, the second racks 433 and the transmission gears 434 form a stable horizontal transmission structure, so that the first racks 41 are prevented from being warped or deviated when moving, and the stability of the angle adjustment process is ensured; the rigid transmission mode of the gear and the rack can provide reliable driving force, the position after adjustment is firmly locked, and the angle stability of the disc harrow blade 3 during work is improved. The driving motor 435 drives the transmission gears 434 to rotate, the transmission gears 434 are in meshing connection with the second racks 433, the second racks 433 are driven to move horizontally in the horizontal grooves 432, the second racks 433 are fixedly connected with the first racks 41 through the driving plates 431, so that the first racks 41 are driven to move synchronously, the first racks 41 drive the harrow legs 2 to rotate through the driven gears 42, and the angle adjustment of the disc harrow blade 3 is realized. The symmetric design of the driving plates 431 balances the stress on the two sides of the first racks 41, and prevents the end of the first racks 41 from being warped.

[0025] In order to facilitate the installation of the driving motor 435, motor supports 11 for supporting the driving motor 435 are fixedly connected to the outer side walls of the harrow group cross beams 1, and the driving motor 435 is fixedly installed on the motor supports 11 through bolts. The motor supports 11 provide a stable mounting support structure for the driving motor 435, the driving motor 435 is detachably fixed through bolt connection, and the installation, debugging and later maintenance of the equipment are facilitated; the support structure can disperse the vibration of the motor during operation, and the reliability of the overall mechanism is improved. The motor supports 11 are fixedly connected to the outer side walls of the harrow group cross beams 1, the driving motor 435 is installed on the mounting surface of the motor support 11 through bolts, the output shaft of the driving motor 435 is fixedly connected with the shaft of the transmission gear 434, so that the driving force of the motor is transmitted to the transmission gear 434, and stable power input is realized.

[0026] In order to further improve the stability of the disc harrow blade 3 after the angle adjustment: the driving motor 435 is a worm gear reducer motor. The worm gear reducer motor has a self-locking function, which can automatically lock the position of the transmission gear 434 after the angle adjustment is completed, prevent the disc harrow blade 3 from being deviated due to external forces such as soil resistance, and further improve the stability after the angle adjustment; the speed reduction characteristic can amplify the driving torque to meet the adjustment requirement under large load. When the output shaft of the worm gear reducer motor drives the transmission gear 434 to rotate, the meshing transmission of the worm and the worm gear realizes speed reduction and torque amplification; after the adjustment is completed, the friction force of the tooth surface of the worm and the worm gear forms a self-locking torque, which prevents the transmission gear 434 from rotating in the opposite direction, thereby locking the position of the first rack 41 and the driven gear 42, and ensuring that the angle of the disc harrow blade 3 remains unchanged.

[0027] In order to facilitate the sealing of the opening at the upper end of the harrow beam 1: the upper end of the harrow beam 1 is fixedly installed with a sealing cover 5 through bolts. The sealing cover 5 is fixed on the upper end of the harrow beam 1 through bolts, which can seal and protect the angle adjustment mechanism 4 inside the beam, prevent impurities such as mud and rainwater from entering the inside of the beam to cause component wear or rust, and facilitate the maintenance of the equipment. The detachable design facilitates the maintenance or replacement of internal components in the later period, improving the maintenance convenience of the equipment. The sealing cover 5 covers the opening at the upper end of the harrow beam 1, and is fixedly connected with the mounting holes at the edge of the beam through bolts, forming a closed space; when the internal structure needs to be maintained, the sealing cover 5 can be removed by removing the bolts, exposing the components inside the beam, which is convenient for operation.

[0028] Example 2

[0029] Different from example 1, in order to improve the sealing performance of the connection between the harrow beam 1 and the sealing cover 5: the upper end side of the harrow beam 1 is fixedly provided with a sealing ring 6 for sealing the gap between the harrow beam 1 and the sealing cover 5. The sealing ring 6 is arranged on the upper end side of the harrow beam 1, which can fill the slight gap between the sealing cover 5 and the beam, further improve the sealing performance of the connection part, effectively prevent foreign matters from entering the inside of the beam, and prolong the service life of the angle adjustment mechanism 4. The sealing ring 6 is made of elastic material, which is compressed between the contact surfaces of the sealing cover 5 and the harrow beam 1 during installation, fills the gap by itself deformation, forms a reliable sealing barrier, and prevents liquid, dust and other matters from invading the inside of the beam through the connection gap.

[0030] It should be noted that: harrow leg 2 and harrow group beam 1 and transmission gear 434 and harrow group beam 1 are provided with sealed bearings. The sealed bearing can reduce the frictional resistance between the rotating parts such as harrow leg 2, transmission gear 434 and harrow group beam 1, and ensure the smoothness of the angle adjustment process; at the same time, the sealing structure of the bearing can prevent external pollutants from entering the rotating part, avoid the loss of lubricating grease or impurities wear the bearing, and improve the service life of the parts and the reliability of the equipment operation. The harrow leg 2 is rotatably connected with the harrow group beam 1 through the sealed bearing, and when the driven gear 42 drives the harrow leg 2 to rotate, the inner ring of the bearing rotates with the harrow leg 2, the outer ring is fixed on the beam, and the rolling body reduces the friction; the sealed bearing between the transmission gear 434 and the beam is the same, which ensures the low resistance and sealing performance of the transmission gear 434 during rotation, and the sealing ring 6 or dust cover of the bearing blocks the impurities in the bearing.

[0031] The wiring diagram of the driving motor 435 in the utility model belongs to the public knowledge in the field, and its working principle is a well-known technology. Its model is selected according to actual use, so the control mode and wiring arrangement of the driving motor 435 are not explained in detail.

[0032] The control mode of the application is controlled by the controller. The control circuit of the controller can be realized by simple programming of the person skilled in the art. The power supply also belongs to the public knowledge in the field, and the application is mainly used to protect the mechanical device, so the control mode and circuit connection are not explained in detail.

[0033] It should be noted that the various standard parts used in the application can be obtained from the market, and the non-standard parts can be specially customized. The connection method used in the application is also a very common means in the mechanical field, and will not be described here.

[0034] The above is only the preferred specific embodiment of the application, but the protection scope of the application is not limited thereto. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and concept of the application within the technical range disclosed by the application, which should be covered within the protection scope of the application.

Claims

1. A disc harrow blade angle adjusting device, comprising a harrow group beam (1) which is provided with a plurality of harrow legs (2) equidistantly along the length direction thereof, the lower end of each harrow leg (2) being fixedly provided with a disc harrow blade (3), and the harrow group beam (1) being provided with an angle adjusting mechanism (4) for angle adjustment of the disc harrow blade (3). characterized in that The angle adjusting mechanism (4) comprises a first rack (41) provided at the upper end of the harrow group beam (1), a driven gear (42) fixedly sleeved on the top of the harrow leg (2) and in meshing connection with the first rack (41), and a driving member (43) for driving the first rack (41) to move along the length direction of the harrow group beam (1).

2. The disc harrow blade angle adjustment device of claim 1, wherein: The driving member (43) comprises a driving plate (431) fixedly connected symmetrically at the upper end of the first rack (41), a horizontal groove (432) being formed in the driving plate (431), a second rack (433) being fixedly connected at the bottom in the horizontal groove (432), a transmission gear (434) being provided at the top in the horizontal groove (432) and in rotational connection with the harrow group beam (1), the transmission gear (434) being in meshing connection with the second rack (433), and one end of the shaft of one of the transmission gears (434) being fixedly connected with a driving motor (435) fixedly provided on the harrow group beam (1).

3. The disc harrow blade angle adjustment device of claim 2, wherein: An electric motor support (11) for supporting the driving motor (435) is fixedly connected to the outer side wall of the harrow group beam (1), and the driving motor (435) is fixedly installed on the electric motor support (11) by means of bolts.

4. The disc harrow blade angle adjustment device of claim 2, wherein: The driving motor (435) is a worm gear deceleration motor.

5. The disc harrow blade angle adjustment device of claim 1, wherein: A sealing cover (5) is fixedly installed on the upper end of the harrow group beam (1) by means of bolts.

6. The disc harrow blade angle adjustment device of claim 5, wherein: A sealing ring (6) for sealing the gap between the harrow group beam (1) and the sealing cover (5) is fixedly provided at the upper end side of the harrow group beam (1).

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