Seed guide pipe frame lifting device of drill seeder and drill seeder

Abstract

The utility model relates to the technical field of drill planters, in particular to a drill planter seed guide pipe frame lifting device and a drill planter, the drill planter seed guide pipe frame lifting device comprises a seed guide pipe frame and sliding rails, the sliding rails are symmetrically arranged at the two ends of the seed guide pipe frame, and the sliding rails extend in the vertical direction; the two ends of the seed guide pipe frame are respectively connected with the two sliding rails in a sliding manner, and limiting mechanisms are arranged at the bottoms of the sliding rails; a limiting hole is formed in the middle of the sliding rail, limiting shafts are arranged at the two ends of the seed guide pipe frame through elastic mechanisms, and the limiting shafts are inserted into the limiting hole under the driving of the elastic mechanisms; lever mechanisms are arranged at the two ends of the seed guide pipe frame, the middles of the lever mechanisms are used for being rotationally connected with a drill seeder support, and one end of each lever mechanism is rotationally connected with the end of the seed guide pipe frame. The device is convenient and labor-saving to operate, the seed guide pipe frame is lifted and descended by virtue of the lever principle and the sliding rail, so that the seed guide pipe frame is separated from the seed-metering device, and the convenience of operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seed drills, in particular to a seed drill seed guide tube frame lifting device and a seed drill. Background Art

[0002] The drill's seed guide rack is a device that secures the seed guides. During pre-seed calibration, the 20 rows of seed guides are separated from the grooved wheel seed meter and connected to a hopper. This allows all the seeds to fall into the hopper, where they are weighed to calculate the seeding rate. The lifting and lowering of the 20 rows of seed guides is laborious.

[0003] Existing seed drill guide tube lifting device technology usually adopts independent spring lifting devices on both sides.

[0004] Independent spring-loaded lifting devices are installed on both sides of the seed guide frame. The springs connect the seed guide frame, releasing the limit shaft and allowing it to drop, allowing the limit shaft to be inserted into the bottom hole to complete positioning. When the seed guide frame rises, the limit shaft is pulled out, and the rear spring pulls up the seed guide frame, saving effort. In actual operation, the spring pull makes the descent of the seed guide frame quite strenuous. The lifting process requires simultaneous force from both sides, and the direction of the force is inconsistent with the direction of the slide rail, resulting in a smaller vertical upward force component for the seed guide frame. This results in more effort, and the spring plays a negative role during the descent process, while the lifting process is ineffective. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a seed drill guide pipe frame lifting device and a seed drill, so as to solve the above-mentioned problems existing in the prior art.

[0006] The technical solution of the utility model for solving the above technical problems is as follows: a lifting device for a seed guide tube rack of a seed drill, comprising a seed guide tube rack and a slide rail, the slide rails being symmetrically arranged at both ends of the seed guide tube rack, and the slide rails extending in the up and down directions; the two ends of the seed guide tube rack are respectively slidably connected to the two slide rails, and the bottom of the slide rail is provided with a limiting mechanism for preventing the seed guide tube rack from separating from the slide rail; a limiting hole is provided in the middle of the slide rail, and limiting shafts are provided at both ends of the seed guide tube rack through an elastic mechanism, and the limiting shafts are inserted into the limiting holes under the drive of the elastic mechanism; a lever mechanism is provided at both ends of the seed guide tube rack, the middle part of the lever mechanism is used to be rotatably connected to the seed drill bracket, and one end of the lever mechanism is rotatably connected to the end of the seed guide tube rack.

[0007] The beneficial effects of the present invention are as follows: the present invention is easy to operate and labor-saving; when proofreading, the two limit shafts are pulled out from the limit holes, and the entire seed guide tube rack slides downward along the slide rail under the action of gravity until it abuts the limit mechanism; at this time, the seed meter is separated from the seed guide tube rack, and the hopper is connected to complete proofreading; after proofreading is completed, the lever mechanism is pressed, and the entire seed guide tube rack moves upward along the slide rail under the drive of the lever mechanism; when the limit shaft moves to the corresponding position of the limit hole, the limit shaft is inserted into the limit hole under the action of the elastic mechanism, thereby fixing the seed guide tube rack.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the cross-section of the slide rail is U-shaped, and the opening of the slide rail is arranged toward the end face of the seed guide tube rack, the end of the seed guide tube rack is slidably arranged on the inner side of the slide rail, and the limiting mechanism is arranged at the inner bottom of the slide rail.

[0010] The beneficial effect of adopting the above further scheme is: the slide rail adopts a U-shaped cross-section structure, which is convenient for guiding the seed guide pipe rack on the one hand, and convenient for the installation of the limiting mechanism on the other hand. The two side walls of the U-shaped structure support the limiting mechanism to ensure the supporting strength of the limiting mechanism.

[0011] Furthermore, two rollers are rotatably provided at the end of the seed guide tube rack, the two rollers are spaced apart from each other, and both of the rollers are provided on the inner side of the slide rail.

[0012] The beneficial effect of adopting the above further solution is: rollers are provided at both ends of the seed guide tube rack to reduce the friction between the seed guide tube rack and the slide rail, and two rollers are provided to prevent the seed guide tube rack from rotating.

[0013] Furthermore, the limiting mechanism includes a support pin, one end of which passes through and extends out of two side walls of the slide rail in sequence.

[0014] The beneficial effect of adopting the above further solution is that the limiting mechanism adopts a support pin, which has a simple structure and is easy to install.

[0015] Furthermore, the elastic mechanism includes a U-shaped mounting seat, one end of the limiting shaft passes through and extends out of the two side walls of the mounting seat in sequence, a compression spring is sleeved on the limiting shaft, and the compression spring is arranged between the two side walls of the mounting seat, one end of the compression spring abuts against the inner side of the side wall of the mounting seat away from the slide rail, and the other end of the compression spring is limitedly connected to the limiting shaft.

[0016] The beneficial effect of adopting the above further solution is that the mounting seat guides the movement of the limit shaft, and driven by the compression spring, the limit shaft has a force to move in the direction of the slide rail.

[0017] Furthermore, the fixing sleeve on the limiting shaft is provided with a pressing sleeve, and one end of the compression spring facing the slide rail abuts against the end surface of the pressing sleeve.

[0018] The beneficial effect of adopting the above further solution is that the provision of the pressing sleeve can facilitate the compression spring to transmit the force to the limiting shaft.

[0019] Furthermore, a radial fixing hole is provided on the limiting shaft, a connecting hole communicating with the radial fixing hole is provided on the axial side surface of the pressing sleeve, and a limiting pin is inserted into the radial fixing hole and the connecting hole.

[0020] The beneficial effect of adopting the above further solution is that the pressure sleeve is installed on the limiting shaft through the limiting pin, which makes installation and disassembly convenient.

[0021] Furthermore, the lever mechanism includes a first connecting plate and a second connecting plate, one end of the first connecting plate is pivotally connected to one end of the second connecting plate, the other end of the first connecting plate is pivotally connected to the end of the seed guide tube rack, and a rotating shaft for connecting to the drill bracket is provided on the side of the second connecting plate.

[0022] The beneficial effect of adopting the above further solution is that the lever structure adopts the pivotally connected first connecting plate and second connecting plate, which can prevent the seed guide tube rack from moving in an arc during the rotation of the lever structure, and ensure that the seed guide tube rack can move along the length direction of the slide rail.

[0023] Furthermore, a pressing handle is fixedly provided on one end of the second connecting plate away from the first connecting plate.

[0024] The beneficial effect of adopting the above further solution is that the provision of the pressing handle can conveniently drive the rotation of the second connecting plate.

[0025] The utility model solves the above technical problems and further provides a seed drill, comprising the seed drill seed guide tube frame lifting device described above.

[0026] The beneficial effects of adopting the above solution are: simple structure, lever principle and slide rail are used to lift and lower the seed guide tube rack, so that it is separated from the seed metering device, thereby improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the connection between the seed guide pipe rack, the limiting shaft and the lever mechanism in the first embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the installation of the limiting shaft in the first embodiment of the present utility model;

[0030] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0031] 1. Seed guide tube rack; 2. Slide rail; 3. Limit hole; 4. Limit shaft; 5. Roller; 6. Support pin; 7. Mounting seat; 8. Compression spring; 9. Pressing sleeve; 10. Radial fixing hole; 11. Connecting hole; 12. First connecting plate; 13. Second connecting plate; 14. Rotating shaft; 15. Pressing handle; 16. Limit pin. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] Example 1

[0034] like Figure 1 、 Figure 2 、 Figure 3 As shown, this embodiment includes a seed guide tube rack 1 and a slide rail 2, the slide rails 2 are symmetrically arranged at both ends of the seed guide tube rack 1, and the slide rails 2 are extended in the up and down directions; the two ends of the seed guide tube rack 1 are respectively slidably connected to the two slide rails 2, and the bottom of the slide rail 2 is provided with a limiting mechanism for preventing the seed guide tube rack 1 from separating from the slide rail 2; a limiting hole 3 is provided in the middle of the slide rail 2, and a limiting shaft 4 is provided at both ends of the seed guide tube rack 1 through an elastic mechanism, and the limiting shaft 4 is inserted into the limiting hole 3 under the drive of the elastic mechanism; a lever mechanism is provided at both ends of the seed guide tube rack 1, the middle part of the lever mechanism is used to be rotatably connected to the drill bracket, and one end of the lever mechanism is rotatably connected to the end of the seed guide tube rack 1.

[0035] In this embodiment, the cross-section of the slide rail 2 is U-shaped, and the opening of the slide rail 2 is arranged toward the end face of the seed guide tube rack 1. The end of the seed guide tube rack 1 is slidably arranged on the inner side of the slide rail 2, and the limiting mechanism is arranged at the inner bottom of the slide rail 2. The slide rail 2 adopts a structure with a U-shaped cross-section. On the one hand, it is convenient to guide the seed guide tube rack 1, and on the other hand, it is convenient to install the limiting mechanism. The two side walls of the U-shaped structure support the limiting mechanism to ensure the supporting strength of the limiting mechanism.

[0036] Preferably, two rollers 5 are rotatably provided at the end of the seed guide tube rack 1, and the two rollers 5 are spaced apart in an upper and lower manner. Both rollers 5 are provided on the inner side of the slide rail 2. Rollers 5 are provided at both ends of the seed guide tube rack 1 to reduce the friction between the seed guide tube rack 1 and the slide rail 2. The provision of two rollers 5 can prevent the seed guide tube rack 1 from rotating.

[0037] In other embodiments of the present invention, the slide rail 2 can also adopt a T-shaped guide rail, and the end of the seed guide tube rack 1 is provided with a T-shaped slot matching the T-shaped guide rail. In order to reduce the friction between the seed guide tube rack 1 and the T-shaped guide rail, a roller 5 mechanism can also be used between the T-shaped slot and the T-shaped guide rail.

[0038] The limiting mechanism includes a support pin 6, one end of which passes through and extends from the two side walls of the slide rail 2 in sequence. The limiting mechanism uses the support pin 6, which has a simple structure and is easy to install. Specifically, one end of the support pin 6 is provided with a head, which is used to prevent the entire support pin 6 from passing through the two side walls of the slide rail 2. The end of the support pin 6 that passes through the two side walls of the slide rail 2 passes through a limiting member to prevent the support pin 6 from detaching from the slide rail 2. The limiting member can be a limiting collar. The support pin 6 is provided with a limiting groove, and the limiting collar is clamped in the limiting groove.

[0039] In this embodiment, the elastic mechanism includes a U-shaped mounting seat 7, one end of the limit shaft 4 passes through and extends out of the two side walls of the mounting seat 7 in sequence, and a compression spring 8 is sleeved on the limit shaft 4, and the compression spring 8 is arranged between the two side walls of the mounting seat 7. One end of the compression spring 8 abuts against the inner side of the side wall of the mounting seat 7 away from the slide rail 2, and the other end of the compression spring 8 is limitedly connected to the limit shaft 4. The mounting seat 7 guides the movement of the limit shaft 4, and the drive of the compression spring 8 makes the limit shaft 4 have the force to move in the direction of the slide rail 2.

[0040] Furthermore, a pressure sleeve 9 is fixedly mounted on the limiting shaft 4. One end of the compression spring 8 facing the slide rail 2 abuts against the end surface of the pressure sleeve 9. A radial fixing hole 10 is provided on the limiting shaft 4. A connecting hole 11 communicating with the radial fixing hole 10 is provided on the axial side surface of the pressure sleeve 9. A limiting pin 16 is inserted into the radial fixing hole 10 and the connecting hole 11. The provision of the pressure sleeve 9 facilitates the compression spring 8 to transmit its force to the limiting shaft 4. The pressure sleeve 9 is mounted on the limiting shaft 4 via the limiting pin 16, making installation and removal easy.

[0041] In other embodiments of the present invention, the pressing sleeve 9 can also be detachably fixedly connected to the limiting shaft 4 by means of a threaded connection.

[0042] In this embodiment, the lever mechanism includes a first connecting plate 12 and a second connecting plate 13. One end of the first connecting plate 12 is pivotally connected to one end of the second connecting plate 13, and the other end of the first connecting plate is pivotally connected to the end of the seed guide tube rack 1. A rotating shaft 14 for connecting to the seed drill bracket is provided on the side of the second connecting plate 13. Specifically, the rotating shaft 14 is a hollow shaft with two ends extending therethrough. The rotating shaft 14 is fixed to the second connecting plate 13 by bolts passing through the rotating shaft 14. A pressing handle 15 is fixed to the end of the second connecting plate 13 away from the first connecting plate 12. The lever structure uses the pivotally connected first and second connecting plates 12, 13 to prevent the seed guide tube rack 1 from moving in an arc during rotation of the lever structure, ensuring that the seed guide tube rack 1 can move along the length direction of the slide rail 2. The provision of the pressing handle 15 facilitates the rotation of the second connecting plate 13.

[0043] In this embodiment, in order to reduce the effort required to press the pressing handle 15 , the rotating shaft 14 is disposed close to the first connecting plate 12 .

[0044] Working principle: When proofreading, the two limit shafts 4 are pulled out from the limit holes 3, and the entire seed guide tube rack 1 slides down along the slide rail 2 under the action of gravity until it abuts the limit mechanism. At this time, the seed meter is separated from the seed guide tube rack 1, and the hopper is connected to complete the proofreading. After the proofreading is completed, the pressing handle 15 is pressed to drive the second connecting plate 13 to rotate, thereby lifting the first connecting plate 12. The entire seed guide tube rack 1 moves upward along the slide rail 2 under the drive of the first connecting plate 12. When the limit shaft 4 moves to the corresponding position of the limit hole 3, the limit shaft 4 is inserted into the limit hole 3 under the action of the compression spring 8, thereby fixing the seed guide tube rack 1.

[0045] Example 2

[0046] This embodiment discloses a seed drill including the seed drill seed guide tube frame 1 lifting device described above.

[0047] The utility model has a simple structure, and utilizes the lever principle and the slide rail 2 to lift and lower the seed guide tube frame 1, so as to separate the seed guide tube frame from the seed metering device, thereby improving the convenience of operation.

[0048] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In the description of the present invention, “a plurality of” means at least two, such as two, three, etc., unless otherwise clearly defined.

[0050] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A seed drill guide tube lifting device, characterized in that: The invention comprises a seed guide tube rack (1) and a slide rail (2), wherein the slide rails (2) are symmetrically arranged at both ends of the seed guide tube rack (1), and the slide rails (2) are extended in the up-down direction; the two ends of the seed guide tube rack (1) are respectively slidably connected to the two slide rails (2), and the bottom of the slide rail (2) is provided with a limiting mechanism for preventing the seed guide tube rack (1) from separating from the slide rail (2); a limiting hole (3) is provided in the middle of the slide rail (2), and both ends of the seed guide tube rack (1) are provided with a limiting shaft (4) through an elastic mechanism, and the limiting shaft (4) is inserted into the limiting hole (3) under the drive of the elastic mechanism; both ends of the seed guide tube rack (1) are provided with a lever mechanism, the middle part of the lever mechanism is used for rotationally connecting with the drill seeding machine bracket, and one end of the lever mechanism is rotationally connected with the end of the seed guide tube rack (1).

2. A seed drill guide tube lifting device according to claim 1, characterized in that: The cross section of the slide rail (2) is U-shaped, and the opening of the slide rail (2) is arranged toward the end face of the seed guide tube rack (1), the end of the seed guide tube rack (1) is slidably arranged on the inner side of the slide rail (2), and the limiting mechanism is arranged on the inner bottom of the slide rail (2).

3. A seed drill guide tube lifting device according to claim 2, characterized in that: Two rollers (5) are rotatably provided at the end of the seed guide tube rack (1), the two rollers (5) are arranged at intervals up and down, and the two rollers (5) are both arranged on the inner side of the slide rail (2).

4. A seed drill guide tube lifting device according to claim 2, characterized in that: The limiting mechanism comprises a support pin (6), one end of which passes through and extends out of two side walls of the slide rail (2) in sequence.

5. The seed drill guide tube lifting device according to claim 1, characterized in that: The elastic mechanism includes a U-shaped mounting seat (7), one end of the limiting shaft (4) passes through and extends out of the two side walls of the mounting seat (7) in sequence, a compression spring (8) is sleeved on the limiting shaft (4), and the compression spring (8) is arranged between the two side walls of the mounting seat (7), one end of the compression spring (8) abuts against the inner side of the side wall of the mounting seat (7) away from the slide rail (2), and the other end of the compression spring (8) is limitedly connected to the limiting shaft (4).

6. A seed drill guide tube lifting device according to claim 5, characterized in that: A pressing sleeve (9) is fixed on the limiting shaft (4), and one end of the compression spring (8) facing the slide rail (2) abuts against the end surface of the pressing sleeve (9).

7. A seed drill guide tube lifting device according to claim 6, characterized in that: The limiting shaft (4) is provided with a radial fixing hole (10), the axial side surface of the pressing sleeve (9) is provided with a connecting hole (11) connected to the radial fixing hole (10), and the limiting pin (16) is inserted into the radial fixing hole (10) and the connecting hole (11).

8. A seed drill guide tube lifting device according to any one of claims 1 to 7, characterized in that: The lever mechanism includes a first connecting plate (12) and a second connecting plate (13), one end of the first connecting plate (12) is pivotally connected to one end of the second connecting plate (13), the other end of the first connecting plate is pivotally connected to the end of the seed guide tube rack (1), and a rotating shaft (14) for connecting to the seed drill bracket is provided on the side of the second connecting plate (13).

9. A seed drill guide tube lifting device according to claim 8, characterized in that: A pressing handle (15) is fixedly provided on one end of the second connecting plate (13) away from the first connecting plate (12).

10. A seed drill, characterized in that: It comprises a seed drill guide tube frame lifting device as described in any one of claims 1 to 9 above.

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