A cutter shaft driving mechanism applied to an orchard rotary cultivator or weeder

Abstract

The utility model discloses a kind of knife shaft driving mechanisms applied to orchard rotary cultivator or weeder, it includes transmission case and cover body rotationally installed in the end of transmission case, drive cylinder is connected between the transmission case and cover body;Rotary cultivator knife group or mower knife group's knife shaft is rotationally installed in the cover body;Transmission shaft is installed in the transmission case, the both ends of the transmission shaft are respectively connected hydraulic motor and universal joint, the universal joint is simultaneously connected the knife shaft;The installation position of the universal joint corresponds to the rotationally connected position of the transmission case and the cover body both.The utility model in, the mode of drive cylinder drives transmission case and cover body relative rotation, cooperate in the connection structure of transmission shaft, knife shaft and universal joint installed in, can be realized the on-demand adjustment of knife shaft pitch angle, structure design is reasonable and reliable, and can realize the cover protection and dustproof anti-winding to main transmission structure, can realize the reliable operation of knife shaft and the convenient adjustment of pitch angle.

Description

Technical Field

[0001] This utility model relates to the field of orchard cleaning machinery technology, and in particular to a cutter shaft drive mechanism for use in orchard rotary tillers or weeders. Background Technology

[0002] In orchard management, fertilizing, loosening soil, and weeding the root zone of upright fruit trees such as apples and pears have always presented operational challenges. Due to the low canopy and dense foliage of mature fruit trees, traditional large-scale tillage equipment struggles to reach the root zone, often requiring manual labor that involves bending over, resulting in high labor intensity, low efficiency, and increased planting costs. To address this issue, patent CN 201054872Y provides an offset rotary tiller for orchards. This solution achieves offset operation between rows of fruit trees through a coordinated design of power, tillage, and suspension components: the power unit utilizes the tractor's rear power take-off shaft, transmitting power to the half-shaft via a universal joint, drive shaft, and differential; the tillage unit uses a rotary cutter sleeve and cutter assembly mounted on the half-shaft to treat the soil. The rotary tiller can be offset to one side of the tractor, thus avoiding the tree canopy when tilling the ground around the fruit tree roots.

[0003] However, such offset rotary tillers still have limitations in practical applications. The blade shaft installation angle of its tilling section is relatively fixed, making it impossible to dynamically adjust according to the terrain undulations, tree root distribution, or different tillage depth requirements. Especially in orchards with complex terrain, slopes, or uneven surfaces, the fixed blade shaft angle can lead to uneven tillage depth, missed tillage areas, or damage to the tree roots. Furthermore, while its transmission structure can transmit power, it lacks integrated protection for critical transmission components. In orchard environments with weeds or vines, this can easily lead to debris entanglement, accelerated component wear, or even malfunctions, affecting equipment reliability. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a cutter shaft drive mechanism that can realize the on-demand adjustment of the cutter shaft pitch angle and has a reasonable and reliable structural design, which can be applied to orchard rotary tillers or weeders.

[0005] Technical solution: To achieve the above objectives, the present invention provides a blade shaft drive mechanism for orchard rotary tillers or weeders, which includes a transmission box and a cover rotatably mounted at the end of the transmission box, wherein a drive cylinder is connected between the transmission box and the cover; the blade shaft of the rotary tiller or weed cutter is rotatably mounted in the cover. The transmission box is equipped with a transmission shaft, and the two ends of the transmission shaft are respectively connected to a hydraulic motor and a universal joint. The universal joint is also connected to the cutter shaft. The installation position of the universal joint corresponds to the rotational connection position between the transmission box and the cover.

[0006] Furthermore, the cover includes a cover body and a connecting portion extending outward from the sidewall of the first side of the cover body; the connecting portion is rotatably mounted relative to the transmission box.

[0007] Furthermore, a first bearing seat and a second bearing seat are respectively installed on both sides of the side wall of the first side of the cover body. The two bearing seats are connected to each other by a plurality of first screws and clamp and fix the side wall. The cutter shaft is connected to the universal joint through a central shaft, and both bearing seats support the central shaft.

[0008] Furthermore, the transfer shaft has a first flange portion, the cutter shaft has a second flange portion, and the first flange portion and the second flange portion are fixedly connected by a plurality of second screws arranged in a circumferential array.

[0009] Furthermore, the transmission box has a mounting base inside, on which a third bearing seat is mounted to support both ends of the transmission shaft; the hydraulic motor is also mounted on the mounting base; the mounting base and the transmission box are connected by a third screw.

[0010] Furthermore, the upper side of the transmission box has an inspection port, and an inspection cover is installed at the location of the inspection port. One side of the inspection port has a groove for the edge of the inspection cover to be inserted, and the other side has a screw hole for screwing in a hand-tightening screw. The hand-tightening screw can fix the inspection cover to the transmission box. When it is necessary to remove the inspection cover, first remove the hand-tightening screw, then slide the inspection cover horizontally so that the edge of the inspection cover disengages from the groove, and the inspection cover can be removed. The inspection port is located above the mounting base, which facilitates operations such as oiling and disassembly.

[0011] Beneficial effects: The blade shaft drive mechanism of this utility model, applied to orchard rotary tillers or weeders, has the following beneficial effects: (1) In this utility model, the transmission box and the cover are rotated relative to each other by driving the oil cylinder. With the connection structure of the transmission shaft, the cutter shaft and the universal joint installed inside, the pitch angle of the cutter shaft can be adjusted as needed. The structure is reasonably and reliably designed. It can also protect the main transmission structure with a cover and prevent dust and tangling. It can also realize the reliable operation of the cutter shaft and the convenient adjustment of the pitch angle.

[0012] (2) The installation method of the cutter shaft is reasonable, which can ensure the stability and reliability of the support on the one hand, and facilitate maintenance and replacement on the other hand.

[0013] (3) By setting up a mounting base, during the assembly process, the mounting base, drive shaft, hydraulic motor and third bearing housing can be assembled into a whole module and then installed into the transmission box. The mounting base is then fixed relative to the transmission box, thus realizing the installation of the hydraulic motor and drive shaft and reducing the installation difficulty. Attached Figure Description

[0014] Figure 1 This is a first-view structural diagram of the cutter shaft drive mechanism used in orchard rotary tillers or weeders. Figure 2 This is a second-view structural diagram of the cutter shaft drive mechanism used in orchard rotary tillers or weeders; Figure 3 This is a cross-sectional view of the cutter shaft drive mechanism used in orchard rotary tillers or weeders. Figure 4 for Figure 1 Enlarged structural diagram of section A; Figure 5 for Figure 2 Enlarged structural diagram of section B; Figure 6 for Figure 3 Enlarged structural diagram of section C; Figure 7 This is a structural diagram of the mounting base and the components mounted on it.

[0015] In the diagram: 1-Transmission box; 1a-Slot; 2-Cover; 2a-Cover body; 2b-Connecting part; 3-Hydraulic motor; 4-Drive shaft; 5-Drive cylinder; 6-Universal joint; 7-Cutter shaft; 7a-Second flange; 8-First bearing seat; 9-Second bearing seat; 10-First screw; 11-Transfer shaft; 11a-First flange; 12-Second screw; 13-Mounting seat; 14-Third bearing seat; 15-Inspection cover; 16-Hand screw. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figures 1 to 3 The cutter shaft drive mechanism shown is used in orchard rotary tillers or weeders. It includes a transmission box 1 and a cover 2 rotatably mounted at the end of the transmission box 1. A drive cylinder 5 is connected between the transmission box 1 and the cover 2. The cutter shaft 7 of the rotary tiller or weed cutter is rotatably mounted inside the cover 2. A drive shaft 4 is installed inside the transmission box 1. The two ends of the drive shaft 4 are respectively connected to a hydraulic motor 3 and a universal joint 6. The universal joint 6 is also connected to the cutter shaft 7. The installation position of the universal joint 6 corresponds to the rotatable connection position of the transmission box 1 and the cover 2.

[0018] In this utility model, the transmission box 1 and the cover 2 are rotated relative to each other by a drive cylinder 5. With the connection structure of the drive shaft 4, the cutter shaft 7 and the universal joint 6 installed inside, the pitch angle of the cutter shaft 7 can be adjusted as needed. The structure is reasonably and reliably designed, and can also provide shielding protection and dust and anti-winding for the main transmission structure. It can also achieve reliable operation of the cutter shaft and convenient adjustment of the pitch angle.

[0019] The cover 2 includes a cover body 2a and a connecting portion 2b extending outward from the side wall of the first side of the cover body 2a; the connecting portion 2b is rotatably mounted relative to the transmission box 1. A first bearing seat 8 and a second bearing seat 9 are respectively installed on both sides of the side wall of the first side of the cover body 2a. The two bearing seats are interconnected by multiple first screws 10 and clamp the side wall in place. The cutter shaft 7 is connected to the universal joint 6 via a central rotating shaft 11, and both bearing seats support the central rotating shaft 11.

[0020] Preferably, such as Figure 5 and Figure 6 As shown, the transfer shaft 11 has a first flange portion 11a, and the cutter shaft 7 has a second flange portion 7a. The first flange portion 11a and the second flange portion 7a are fixedly connected by a plurality of second screws 12 arranged in a circumferential array.

[0021] The installation method of the aforementioned cutter shaft 7 is reasonable. On the one hand, it can ensure the stability and reliability of the support, and on the other hand, it can facilitate maintenance and replacement.

[0022] Preferably, the transmission box 1 has a mounting base 13 inside, such as... Figure 7 As shown, the mounting base 13 has a third bearing seat 14 that supports both ends of the drive shaft 4; the hydraulic motor 3 is also mounted on the mounting base 13; the mounting base 13 and the transmission box 1 are connected by a third screw. With this structure, during assembly, the mounting base 13, drive shaft 4, hydraulic motor 3, and third bearing seat 14 can be assembled into a single module, then installed together into the transmission box 1, and the mounting base 13 is fixed relative to the transmission box 1. This achieves the installation of the hydraulic motor 3 and drive shaft 4, reducing installation difficulty.

[0023] Preferably, such as Figure 4As shown, the upper side of the transmission box 1 has an inspection port, and an inspection cover 15 is installed at the location of the inspection port. One side of the inspection port has a groove 1a for the edge of the inspection cover 15 to be inserted, and the other side has a screw hole for screwing in a hand-operated screw 16. The hand-operated screw 16 can fix the inspection cover 15 to the transmission box 1. When it is necessary to remove the inspection cover 15, first remove the hand-operated screw 16, then slide the inspection cover 15 horizontally so that the edge of the inspection cover 15 disengages from the groove 1a, and the inspection cover 15 can be removed. The inspection port is located above the mounting base 13, which facilitates operations such as oiling and disassembly.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cutter shaft drive mechanism for use in orchard rotary tillers or weeders, characterized in that, It includes a transmission box (1) and a cover (2) rotatably mounted on the end of the transmission box (1), and a drive cylinder (5) is connected between the transmission box (1) and the cover (2); the blade shaft (7) of the rotary tiller or grass cutter is rotatably mounted inside the cover (2); The transmission box (1) is equipped with a transmission shaft (4), and the two ends of the transmission shaft (4) are respectively connected to a hydraulic motor (3) and a universal joint (6). The universal joint (6) is also connected to the cutter shaft (7). The installation position of the universal joint (6) corresponds to the rotational connection position between the transmission box (1) and the cover (2).

2. The cutter shaft drive mechanism for orchard rotary tillers or weeders according to claim 1, characterized in that, The cover (2) includes a cover body (2a) and a connecting portion (2b) extending outward from the side wall of the first side of the cover body (2a); the connecting portion (2b) is rotatably mounted relative to the transmission box (1).

3. The cutter shaft drive mechanism for orchard rotary tillers or weeders according to claim 2, characterized in that, The first bearing seat (8) and the second bearing seat (9) are respectively installed on the side wall of the first side of the cover body (2a). The two bearing seats are connected to each other by a plurality of first screws (10) and clamp and fix the side wall. The cutter shaft (7) is connected to the universal joint (6) through the central shaft (11). Both bearing seats support the central shaft (11).

4. The cutter shaft drive mechanism for orchard rotary tillers or weeders according to claim 3, characterized in that, The transfer shaft (11) has a first flange (11a), and the cutter shaft (7) has a second flange (7a). The first flange (11a) and the second flange (7a) are fixedly connected by a plurality of second screws (12) arranged in a circumferential array.

5. The cutter shaft drive mechanism for orchard rotary tillers or weeders according to claim 1, characterized in that, The transmission box (1) has a mounting base (13) inside, and a third bearing seat (14) is mounted on the mounting base (13) to support both ends of the transmission shaft (4); the hydraulic motor (3) is also mounted on the mounting base (13); the mounting base (13) and the transmission box (1) are connected by a third screw.

6. The cutter shaft drive mechanism for orchard rotary tillers or weeders according to claim 1, characterized in that, The transmission box (1) has an inspection port on its upper side, and an inspection cover (15) is installed at the location of the inspection port. One side of the inspection port has a slot (1a) for the edge of the inspection cover (15) to be inserted, and the other side has a screw hole for screwing a hand screw (16). The hand screw (16) can fix the inspection cover (15) on the transmission box (1).

Images