Hydraulic turnover plow
By introducing a mechanical limiting device consisting of a limit bracket and a sequence valve into the hydraulic reversible plow, the problem of tillage accuracy under complex farmland conditions has been solved, achieving high reliability and low cost tillage results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO LEKEN AGRI EQUIP CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-24
AI Technical Summary
Existing hydraulic reversible plows lack effective limiting devices, resulting in low tillage accuracy under complex farmland conditions, and the electronic sensors are expensive and prone to failure.
A hydraulic reversible plow was designed, which uses a limit bracket sleeved on the limit shaft of the plow beam assembly, combined with a U-shaped bracket and a sequence valve to achieve mechanical limiting. Different tillage depths can be adjusted through the gear adjustment hole, thereby enhancing reliability and adjustability.
It improves tillage precision, avoids limit deviation, extends the service life of the amplitude adjustment cylinder, reduces costs, and enhances the reliability and practicality of the device.
Smart Images
Figure CN224154628U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of agricultural machinery technology, specifically, it relates to a hydraulic reversible plow. Background Technology
[0002] With the advancement of technology, more and more machines are serving people's daily lives. To facilitate soil clearing and crushing, hydraulic reversible plows, used in conjunction with tractors, have emerged. These plows primarily utilize the extension and retraction of a piston rod in a hydraulic cylinder to drive the plow body on the plow frame in a vertically rotating motion, alternating between working positions. They are mainly used for soil clearing and crushing in agriculture. Existing hydraulic reversible plows often use limit devices or electronic sensors to control the amplitude adjustment cylinders. While electronic sensors offer high accuracy, they rely on circuit systems and are prone to failure under complex farmland conditions, and are also costly. Furthermore, amplitude adjustment cylinders without limit devices are prone to limit deviations with prolonged use, affecting tillage accuracy. Therefore, this invention proposes a limit device for the amplitude adjustment cylinder of a hydraulic reversible plow to solve the problems existing in the prior art. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a hydraulic reversible plow.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows:
[0005] A hydraulic reversible plow includes a reversible plow head assembly, an I-beam, a plow beam assembly, and an amplitude-adjusting cylinder. The I-beam includes a first connecting portion and a second connecting portion. The reversible plow head assembly is connected to the first connecting portion of the I-beam. The plow beam assembly is connected to the second connecting portion of the I-beam via a fixed shaft. The cylinder body of the amplitude-adjusting cylinder is connected to the reversible plow head assembly. The piston rod of the amplitude-adjusting cylinder is connected to the plow beam assembly via a connecting plate. The cylinder body of the amplitude-adjusting cylinder is provided with a limiting structure. The limiting structure includes a connecting bracket and a limiting bracket. The connecting bracket and the limiting bracket are connected. The connecting bracket is connected to the cylinder body of the amplitude-adjusting cylinder. The limiting bracket is a U-shaped bracket sleeved outside the limiting shaft of the plow beam assembly.
[0006] Furthermore, the amplitude-adjusting cylinder has two sets of limiting structures symmetrically arranged on both sides of the cylinder body.
[0007] Furthermore, the limiting bracket is provided with a groove for sliding the limiting shaft.
[0008] Furthermore, the limiting bracket is provided with a first connecting structure, and the connecting bracket is provided with a second connecting structure. The first connecting structure includes an upper connecting piece and a lower connecting piece, and a connecting groove is formed between the upper connecting piece and the lower connecting piece. The second connecting structure is embedded in the connecting groove.
[0009] Furthermore, the connecting bracket is provided with multiple gear adjustment holes, and the limiting bracket is provided with connection holes. The adjustment holes of the connecting bracket are connected to the connection holes of the limiting bracket through the connecting component to achieve an adjustable connection.
[0010] Furthermore, the outer ends of the upper connecting piece, the lower connecting piece, and the second connecting structure are provided with a first arc-shaped contact surface, a second arc-shaped contact surface, and a third arc-shaped contact surface that are consistent with the curvature of the limiting shaft.
[0011] Furthermore, the connecting bracket includes a connecting part and a supporting part. The connecting part is connected to the cylinder body of the amplitude regulating cylinder, and the supporting part is connected to the second connecting structure. The included angle between the plane where the supporting part is located and the plane where the second connecting structure is located is an obtuse angle.
[0012] Furthermore, it also includes a sequence valve, which is connected to a limit shaft. When the limit shaft comes into contact with the end of the limit bracket, the sequence valve is triggered to switch directions.
[0013] By adopting the above technical solution, the hydraulic reversible plow provided by this utility model has the following beneficial effects compared with the prior art.
[0014] (1) The limiting bracket of this utility model is a U-shaped bracket sleeved outside the limiting shaft of the plow beam assembly. The limiting shaft can slide on the limiting bracket, replacing the electronic sensor that is prone to failure and has high cost under complex farmland conditions. It has higher reliability and makes the movement of the cylinder piston rod subject to mechanical limiting constraints, which can effectively avoid the problem of limiting deviation caused by long-term use, thereby improving the tillage accuracy.
[0015] (2) By setting up a gear adjustment hole, this utility model can be adjusted according to different needs to meet the needs of different tillage depths or working conditions, enhance the adjustability and practicality of the device, prevent the oil cylinder from being stretched beyond its stroke by external force, and extend the service life of the amplitude adjustment oil cylinder.
[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0017] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:
[0018] Figure 1 This is a schematic diagram of the structure of a hydraulic reversible plow according to this utility model;
[0019] Figure 2 This is a schematic diagram of the limiting structure of a hydraulic reversible plow according to this utility model.
[0020] In the diagram: 1. Reversible plowshare assembly;
[0021] 2. Plow beam assembly;
[0022] 3. First connecting part;
[0023] 4. Second connecting part;
[0024] 5. Fix the shaft;
[0025] 6. Amplitude adjustment cylinder;
[0026] 7. Connecting plate;
[0027] 8. Limiting axis;
[0028] 9. Limiting structure;
[0029] 10. Connecting bracket;
[0030] 11. Limiting bracket;
[0031] 12. First connection structure;
[0032] 13. Second connection structure;
[0033] 14. Adjustment hole;
[0034] 15. Support section.
[0035] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0037] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0040] like Figures 1 to 2 As shown, the present invention provides a hydraulic reversible plow, which mainly includes a reversible plow head assembly 1, an I-beam, a plow beam assembly 2, and an amplitude adjustment cylinder 6. The I-beam includes a first connecting part 3 and a second connecting part 4. The reversible plow head assembly 1 is connected to the first connecting part 3 of the I-beam. The plow beam assembly 2 is connected to the second connecting part 4 of the I-beam through a fixed shaft 5. The cylinder body of the amplitude adjustment cylinder 6 is connected to the reversible plow head assembly 1. The piston rod of the amplitude adjustment cylinder 6 is connected to the plow beam assembly 2 through a connecting plate 7. A limiting structure 9 is provided on the cylinder body of the amplitude adjustment cylinder 6. The limiting structure 9 includes a connecting bracket 10 and a limiting bracket 11. The connecting bracket 10 and the limiting bracket 11 are connected. The connecting bracket 10 is connected to the cylinder body of the amplitude adjustment cylinder 6. The limiting bracket 11 is a U-shaped bracket sleeved outside the limiting shaft 8 of the plow beam assembly 2.
[0041] Furthermore, the amplitude-adjusting cylinder 6 has two sets of limiting structures 9 symmetrically arranged on both sides of the cylinder body. Compared with the limiting structure 9 on one side of the cylinder body, the setting of two sets of limiting structures 9 makes the limiting effect better.
[0042] Furthermore, the limiting bracket 11 is provided with a groove for sliding the limiting shaft 8, which reduces the shaking and jamming during the movement of the limiting shaft 8, making the movement smoother and reducing mechanical wear.
[0043] Furthermore, the limiting bracket 11 is provided with a first connecting structure 12, and the connecting bracket 10 is provided with a second connecting structure 13. The first connecting structure 12 includes an upper connecting piece and a lower connecting piece, and a connecting groove is formed between the upper connecting piece and the lower connecting piece. The second connecting structure 13 is embedded in the connecting groove.
[0044] Furthermore, the connecting bracket 10 is provided with multiple gear adjustment holes 14, and the limiting bracket 11 is provided with connection holes. The adjustment holes 14 of the connecting bracket 10 are connected to the connection holes of the limiting bracket 11 through the connecting components to achieve adjustable connection.
[0045] Furthermore, the outer ends of the upper connecting piece, the lower connecting piece, and the second connecting structure 13 are provided with a first arc-shaped contact surface, a second arc-shaped contact surface, and a third arc-shaped contact surface that are consistent with the curvature of the limiting shaft 8. The arc-shaped contact surfaces with consistent curvature can make the limiting bracket 11 more stable in limiting the limiting shaft 8, avoid limiting deviation caused by non-fitting contact surfaces, and further improve the reliability of limiting and the tillage accuracy.
[0046] Furthermore, the multiple gear adjustment holes 14 include long-stroke holes and short-stroke holes. When the long-stroke hole is connected to the connecting hole through the connecting component, the outer end of the second connecting structure 13 is set in the connecting groove, the third arc-shaped contact surface is not flush with the first arc-shaped contact surface and the second arc-shaped contact surface, and the third arc-shaped contact surface does not contact the limiting shaft 8. The limiting shaft 8 is limited by the contact of the first arc-shaped contact surface and the second arc-shaped contact surface. When the short-stroke hole is connected to the connecting hole through the connecting component, the outer end of the second connecting structure 13 is set outside the connecting groove, the third arc-shaped contact surface is flush with the first arc-shaped contact surface and the second arc-shaped contact surface, and the third arc-shaped contact surface contacts the limiting shaft 8. The limiting shaft 8 is limited by the contact of the first arc-shaped contact surface, the second arc-shaped contact surface and the third arc-shaped contact surface.
[0047] Furthermore, the connecting bracket 10 includes a connecting part and a supporting part 15. The connecting part is connected to the cylinder body of the amplitude regulating cylinder 6. The connecting part has a certain curvature to improve the stress point of the mechanism. The supporting part 15 is connected to the second connecting structure 13. The angle formed between the plane where the supporting part 15 is located and the plane where the second connecting structure 13 is located is an obtuse angle. The structural design of the angle enables the connecting bracket 10 to withstand a larger load, enhances the support strength, avoids the occurrence of stress concentration, and improves the structural stability and durability of the device.
[0048] Furthermore, it also includes a sequence valve, which is connected to the limit shaft 8. When the limit shaft 8 comes into contact with the end of the limit bracket 11, the sequence valve is triggered to switch directions. The sequence valve can switch directions in time when the amplitude regulating cylinder 6 reaches the preset limit position, so as to avoid damage to the amplitude regulating cylinder 6 due to overtravel movement, and provide overload protection for the equipment, further ensuring the safe operation of the equipment.
[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A hydraulic reversible plow, comprising a reversible plow head assembly, an I-beam, a plow beam assembly, and an amplitude-adjusting cylinder, wherein the I-beam includes a first connecting portion and a second connecting portion, the reversible plow head assembly is connected to the first connecting portion of the I-beam, and the plow beam assembly is connected to the second connecting portion of the I-beam via a fixed shaft, characterized in that: The cylinder body of the amplitude-adjusting cylinder is connected to the plow head assembly. The piston rod of the amplitude-adjusting cylinder is connected to the plow beam assembly via a connecting plate. The cylinder body of the amplitude-adjusting cylinder is provided with a limiting structure, which includes a connecting bracket and a limiting bracket. The connecting bracket and the limiting bracket are connected. The connecting bracket is connected to the cylinder body of the amplitude-adjusting cylinder. The limiting bracket is a U-shaped bracket sleeved outside the limiting shaft of the plow beam assembly.
2. The hydraulic reversible plow according to claim 1, characterized in that: The amplitude regulating cylinder has two sets of limiting structures symmetrically arranged on both sides of the cylinder body.
3. A hydraulic reversible plow according to claim 1, characterized in that: The limiting bracket is provided with a groove for the sliding of the limiting shaft.
4. A hydraulic reversible plow according to claim 1, characterized in that: The limiting bracket is provided with a first connecting structure, and the connecting bracket is provided with a second connecting structure. The first connecting structure includes an upper connecting piece and a lower connecting piece, and a connecting groove is formed between the upper connecting piece and the lower connecting piece. The second connecting structure is embedded in the connecting groove.
5. A hydraulic reversible plow according to claim 4, characterized in that: The connecting bracket is provided with multiple gear adjustment holes, and the limiting bracket is provided with connection holes. The adjustment holes of the connecting bracket are connected to the connection holes of the limiting bracket through the connecting component to achieve an adjustable connection.
6. A hydraulic reversible plow according to claim 4, characterized in that: The outer ends of the upper connecting piece, the lower connecting piece, and the second connecting structure are provided with a first arc-shaped contact surface, a second arc-shaped contact surface, and a third arc-shaped contact surface that are consistent with the curvature of the limiting shaft.
7. A hydraulic reversible plow according to claim 4, characterized in that: The connecting bracket includes a connecting part and a supporting part. The connecting part is connected to the cylinder body of the amplitude regulating cylinder, and the supporting part is connected to the second connecting structure. The included angle between the plane where the supporting part is located and the plane where the second connecting structure is located is an obtuse angle.
8. A hydraulic reversible plow according to claim 1, characterized in that: It also includes a sequence valve, which is connected to a limit shaft. When the limit shaft comes into contact with the end of the limit bracket, the sequence valve is triggered to switch directions.