Lifting mechanism of rotary cultivator

Abstract

The utility model discloses a lifting mechanism of a rotary cultivator, and belongs to the field of rotary cultivators. Which comprises a rotary cultivator body which is provided with a rotary tillage knife rest used for installing a rotary tillage knife shaft, and is characterized by further comprising a supporting frame connected with a walking tractor in a fastened mode; the fixed shaft sleeve is fixedly arranged on the support frame, and two ends are respectively positioned on two sides of the support frame; the rotating shaft is inserted into the fixed shaft sleeve and is in running fit with the fixed shaft sleeve; the lifting lever is fixedly arranged on the rotating shaft and is used for mounting the rotary tillage tool rest; the mounting plate is fixed on the fixed shaft sleeve; the threaded seat is fixedly arranged on the mounting plate; the stop screw rod is in threaded connection with the threaded seat; the limiting plate is fixedly arranged on the lifting lever, and the limiting plate and the rotary tillage tool rest are arranged on the front side and the rear side of the axis of the rotating shaft respectively; the limiting plate is located in the axis extending direction of the stop screw. The rotary cultivator lifting mechanism has the beneficial effect that the rotary cultivator lifting mechanism convenient to use is provided.

Description

Technical Field

[0001] This application relates to the field of rotary tillers, and more specifically, to rotary tiller lifting mechanisms. Background Technology

[0002] A rotary tiller is a tillage machine used in conjunction with a tractor to perform rotary tillage operations. It is mounted on a walking tractor. Due to its strong soil-breaking ability and the ability to flatten the soil surface after tillage, it is widely used. It can also chop up stubble buried below the surface, facilitating seeder operations and providing a good seedbed for later sowing. When using a conventional rotary tiller, the tillage depth is usually adjusted slightly by rotating the tillage depth adjustment handle. If this is still insufficient, the bolts are loosened, the tail wheel outer sleeve is moved up and down for adjustment, and then it is re-clamped, making it somewhat inconvenient to use.

[0003] Therefore, a user-friendly rotary tiller lifting mechanism is needed. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a rotary tiller lifting mechanism, comprising: a rotary tiller body, on which a rotary tiller blade holder for mounting the rotary tiller blade shaft is provided; a support frame, fastened to a walking tractor; a fixed bushing, fixedly mounted on the support frame, with its two ends located on opposite sides of the support frame; a rotating shaft, inserted into the fixed bushing and rotatably engaged with it; a lifting lever, fixedly mounted on the rotating shaft, for mounting the rotary tiller blade holder; a mounting plate, fixedly mounted on the fixed bushing; a threaded seat, fixedly mounted on the mounting plate; a stop screw, threadedly connected to the threaded seat; and a limiting plate, fixedly mounted on the lifting lever, located on opposite sides of the axis of the rotating shaft, respectively, along with the rotary tiller blade holder; wherein the limiting plate is located in the direction of extension of the axis of the stop screw.

[0006] Furthermore, the mounting plate is provided with a rotating lever, which includes a main body parallel to the rotation plane of the lifting lever and a stop part perpendicular to the main body. The projection of the stop part in the direction of the shortest line connecting it to the lifting lever overlaps with the lifting lever.

[0007] Furthermore, a mounting column is provided on the main body, and a rotating shaft seat is fixedly connected to the mounting plate. The mounting column is inserted into the rotating shaft seat and rotates in cooperation with the rotating shaft seat. The rotation axis of the mounting column is parallel to the rotation axis of the lifting lever.

[0008] Furthermore, the limiting plate has a contact portion that abuts against the stop screw and a limiting portion for providing support to the stop portion, the contact portion having a plane facing the stop screw.

[0009] Furthermore, a limiting end is fixedly connected to the mounting plate for limiting the rotation lever. The limiting end is located on the side of the stop part away from the lifting lever, thereby limiting the movement of the stop part away from the lifting lever.

[0010] Furthermore, a rotating handle is provided on the stop screw.

[0011] Furthermore, the two ends of the rotating shaft pass through the two ends of the fixed bushing, and the lifting levers are set on both sides of the support frame.

[0012] Furthermore, the main body has a first section located on both sides of the mounting post and a second section connected to the stop, the first section being longer than the second section.

[0013] The beneficial effects of this application are as follows: by adopting a stable and reliable mechanical structure to adjust the tillage depth, the operator can easily adjust the tillage depth from the seat, which reduces the operator's workload, improves work efficiency, and improves the quality of operation, thus providing a convenient rotary tiller lifting mechanism. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0015] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0016] In the attached diagram:

[0017] Figure 1 This is an overall schematic diagram according to one embodiment of the present application;

[0018] Figure 2 yes Figure 1 The installation diagram of the support frame and lifting lever in the embodiment is shown below;

[0019] Figure 3 yes Figure 1 The embodiment shows the installation diagram of the rotating lever.

[0020] Figure label:

[0021] 100. Rotary tiller blade holder; 101. Support frame; 102. Fixed bushing; 103. Rotating shaft; 104. Lifting lever; 105. Mounting plate; 106. Threaded seat; 107. Stop screw; 108. Limiting plate; 109. Rotating lever; 110. Main body; 111. Stopping part; 112. Mounting column; 113. Rotating shaft seat; 114. Contact part; 115. Limiting part; 116. Limiting end. Detailed Implementation

[0022] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0023] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0024] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0025] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0026] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] Reference Figure 1-3The rotary tiller lifting mechanism includes: a rotary tiller blade holder 100, a support frame 101, a fixed bushing 102, a rotating shaft 103, a lifting lever 104, a mounting plate 105, a threaded seat 106, a stop screw 107, and a limit plate 108. The support frame 101 is securely connected to the walking tractor. The fixed bushing 102 is fixedly mounted on the support frame 101, with its two ends located on opposite sides of the support frame 101. The rotating shaft 103 is inserted into the fixed bushing 102 and rotates with it, with both ends extending out of the fixed bushing 102. Two lifting levers 104 are provided, fixedly mounted on both ends of the rotating shaft 103, with the rotary tiller blade holder 100 mounted on one end of each lever 104. The mounting plate 105 is fixed to the fixed bushing 102. The threaded seat 106 is fixedly mounted on the mounting plate 105. The stop screw 107 is threadedly connected to the threaded seat 106, and a rotating handle is provided on the stop screw 107. The limiting plate 108 is fixedly mounted on the lifting lever 104, and is located on both sides of the rotation axis of the rotary shaft 103, respectively, along with the rotary tiller blade holder 100. By stepping on the lifting lever 104, the lifting lever 104 rotates around the rotation axis 103, raising the rotary tiller blade holder 100. Then, by rotating the brake screw 107 to a suitable position, the lifting lever 104 is released, causing the end of the brake screw 107 to abut against the limiting plate 108, thus stopping the movement.

[0028] Mounting plate 105 is provided with a rotating lever 109, which includes a main body 110 parallel to the rotation plane of lifting lever 104 and a stop 111 perpendicular to the main body 110. The projection of the stop 111 in the direction of the shortest line connecting it to lifting lever 104 overlaps with the lifting lever 104. Mounting post 112 is provided on the main body 110, and rotating shaft seat 113 is fixedly connected to mounting plate 105. Mounting post 112 is inserted into rotating shaft seat 113 and rotates in cooperation with rotating shaft seat 113. The rotation axis of mounting post 112 is parallel to the rotation axis of lifting lever 104.

[0029] The limiting plate 108 has a contact portion 114 that abuts against the stop screw 107 and a limiting portion 115 that provides support for the stop portion 111. The contact portion 114 has a plane facing the stop screw 107. By rotating the lever 109 around the axis of the rotating column, the lever 109 has two states: First state: the stop portion 111 does not contact the lifting lever 104, and the height of the rotary tiller 100 is adjusted by the stop screw 107; Second state: by rotating the lever 109 around the axis of the rotating column, the stop portion 111 contacts the lifting lever 104, and the contact position and the rotary tiller 100 are respectively located on both sides of the axis of the rotating shaft 103, thereby causing the lifting lever 104 to rotate around the rotating shaft 103 and lifting the rotary tiller 100. When the stop part 111 contacts the limit part 115, the angle between the lifting lever 104 and the main body 110 is an acute angle, so that the stop part 111 abuts against the limit part 115 and locks the state of the lifting lever 104. At this time, the rotary tiller 100 is at its maximum height.

[0030] A limiting end 116 for limiting the rotation lever 109 is fixedly connected to the mounting plate 105. The limiting end 116 is located on the side of the stop part 111 away from the lifting lever 104, thereby limiting the movement of the stop part 111 away from the lifting lever 104. When the rotation lever 109 is in the first state, the limiting end 116 limits the rotation lever 109 to prevent the rotation lever 109 from shaking.

[0031] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. Rotary tiller lifting mechanism, including: The rotary tiller body, on which a rotary tiller blade holder for mounting the rotary tiller blade shaft is provided, is characterized by: The rotary tiller lifting mechanism also includes: Support frame, securely connected to the hand tractor; A fixed bushing is fixedly mounted on the support frame, with its two ends located on both sides of the support frame; The rotating shaft is inserted into the fixed bushing and rotates with the fixed bushing. The lifting lever is fixedly mounted on the rotating shaft and is used to install the rotary tiller blade holder; Mounting plate, fixed on the fixed bushing; The threaded seat is fixedly mounted on the mounting plate. The stop screw is threadedly connected to the threaded seat. The limiting plate is fixedly installed on the lifting lever, which sets the direction of travel of the hand-held tractor to the forward and backward direction. The limiting plate and the rotary tiller are respectively installed on the front and rear sides of the axis of the rotating shaft. The limiting plate is located in the direction of the extension of the stop screw axis.

2. The rotary tiller lifting mechanism according to claim 1, characterized in that: The mounting plate is provided with a rotating lever, which includes a main body parallel to the rotation plane of the lifting lever and a stop part perpendicular to the main body. The projection of the stop part in the direction of the shortest line connecting it to the lifting lever overlaps with the lifting lever.

3. The rotary tiller lifting mechanism according to claim 2, characterized in that: The main body is equipped with a mounting column, and a rotating shaft seat is fixedly connected to the mounting plate. The mounting column is inserted into the rotating shaft seat and rotates with the rotating shaft seat. The rotation axis of the mounting column is parallel to the rotation axis of the lifting lever.

4. The rotary tiller lifting mechanism according to claim 2, characterized in that: The limiting plate has a contact portion that abuts against the stop screw and a limiting portion for providing support to the stop portion, the contact portion having a plane facing the stop screw.

5. The rotary tiller lifting mechanism according to claim 2, characterized in that: The mounting plate is fixedly connected with a limiting end for limiting the rotation lever. The limiting end is located on the side of the stop part away from the lifting lever, so as to limit the movement of the stop part away from the lifting lever.

6. The rotary tiller lifting mechanism according to claim 1, characterized in that: The stop screw is equipped with a rotating handle.

7. The rotary tiller lifting mechanism according to claim 1, characterized in that: The two ends of the rotating shaft pass through the two ends of the fixed bushing, and the lifting levers are set on both sides of the support frame.

8. The rotary tiller lifting mechanism according to claim 3, characterized in that: The main body has a first section located on both sides of the mounting post and a second section connected to the stop part, the first section being longer than the second section.

Images