A rice film mulching and transplanting machine opening device

Abstract

The utility model discloses a kind of rice film mulching transplanter trepanning device, including lifting shaft, the chain wheel box and the floating plate adjusting frame of several sprocket boxes being equipped at one end of the lifting shaft, the driving sprocket shaft being equipped at the rear end of the chain wheel box, and the big sprocket shaft being equipped at the front end of the chain wheel box, further including the installation pole being arranged in parallel with the lifting shaft, the trepanning cutter being equipped on the installation pole, the drive mechanism being equipped between the installation pole and the driving sprocket shaft, the installation pole is fixed on the floating plate adjusting frame by shaft sleeve, one trepanning cutter is equipped at the both sides of the chain wheel box respectively, the trepanning cutter is rotated by the driving sprocket shaft, and the drive mechanism is rotated to the installation pole to realize the trepanning operation to film.Effective solution has appeared the problem of trepanning inaccuracy in the process of rice film mulching transplanting, effectively improve seedling survival rate and film mulching transplanting efficiency and transplanting quality.

Description

Technical Field

[0001] This utility model relates to the technical field of rice mulching transplanters, specifically to an opening device for a rice mulching transplanter. Background Technology

[0002] Currently, with continuous innovation, the functions of rice transplanters with film covering are constantly being improved. For automatic rice transplanters with film covering, the design of the film breaking device after film covering is completed directly determines the efficiency and quality of transplanting. However, the existing film breaking devices are generally independent mechanisms that are not well integrated with the transplanting components. This results in problems such as unreasonable structure, complex structure, frequent malfunctions, and poor accuracy in the opening position when making holes. The opening knife is also prone to damaging the seedlings, leading to a decrease in the survival rate of transplanted seedlings. Summary of the Invention

[0003] In order to solve one or more technical problems existing in the prior art, the purpose of this application is to provide a hole-opening device for a rice mulching transplanter, which effectively solves the problem of inaccurate hole opening during the rice mulching transplanting process, and effectively improves the survival rate of seedlings, as well as the efficiency and quality of mulching transplanting.

[0004] To solve the aforementioned technical problems, this application adopts the following technical solution:

[0005] A perforation device for a rice mulching transplanter includes a lifting shaft, several sprocket boxes and a float adjustment frame with one end mounted on the lifting shaft, a drive sprocket shaft extending through the rear ends of the sprocket boxes at both ends, and a large sprocket shaft at the front end of the sprocket boxes. The device is characterized by further including an installation rod parallel to the lifting shaft, a perforation cutter mounted on the installation rod, and a drive mechanism between the installation rod and the drive sprocket shaft. The installation rod is fixed to the float adjustment frame by a bushing. A perforation cutter is provided on each side of the sprocket box. The perforation cutter, through the rotation of the drive sprocket shaft, drives the drive mechanism to rotate the installation rod, thereby achieving the perforation operation on the rice film.

[0006] Preferably, the drive mechanism includes a cam mounted on the drive sprocket shaft, a drive shaft mounted on the cam, a drive rod mounted on the mounting rod, and a transmission rod with its two ends rotatably connected to the drive shaft and the drive rod, respectively.

[0007] Preferably, one end of the transmission rod is provided with a bearing, and one end of the transmission rod is connected to the transmission shaft through the bearing.

[0008] Preferably, the connecting end of the drive rod and the transmission rod is provided with a pin.

[0009] Preferably, the punch includes a punch holder with one end mounted on the mounting rod and a punch body with one end fixed on the punch holder. The front side of the punch holder is provided with a mounting groove with a fixing hole, and the end of the punch body is fixed in the mounting groove.

[0010] Preferably, one end of the tool holder is provided with an open clamping groove, and the open end of the clamping groove is provided with a bolt mounting hole. After the mounting rod is inserted into the clamping groove, it is clamped and fixed by installing bolts through the bolt mounting hole.

[0011] Preferably, the mounting rod is a square metal rod, and the bushing is sleeved on the mounting rod and fixed on one side to the float adjustment frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The hole-opening device uses the drive sprocket shaft on the sprocket box as the power source for hole opening. No additional driving force is needed during the driving process of the drive mechanism. Moreover, the rice planting operation is carried out immediately after each hole opening, which effectively ensures the synchronization of hole opening and rice planting and avoids situations such as misaligned rice planting, misaligned holes, or multiple holes after hole opening.

[0014] 2. The mounting rod, which is parallel to the lifting shaft, is installed using the float adjustment frame as a fulcrum. The perforating cutter is mounted on the mounting rod, which facilitates the adjustment of the perforating cutter's position and effectively ensures the positional accuracy of the perforating cutter after installation. This avoids the phenomenon of film perforation misalignment caused by the perforating cutter rotating the mounting rod through the rotation of the drive mechanism via the rotation of the active sprocket shaft. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention, showing the driving structure of the drilling tool when a sprocket box is installed on the lifting shaft;

[0016] Figure 2 This is a schematic diagram of the structure of the hole-opening knife in this utility model, which is connected to the drive sprocket shaft through a drive mechanism;

[0017] In the diagram: 1. Hole-opening cutter; 11. Cutter body; 12. Cutter holder; 13. Mounting slot; 14. Bolt mounting hole; 15. Clamping slot; 2. Drive mechanism; 3. Large sprocket shaft; 4. Sprocket box; 5. Drive sprocket shaft; 6. Lifting shaft; 7. Mounting rod; 8. Bushing; 9. Float adjustment frame; 21. Drive shaft; 22. Bearing; 23. Cam; 24. Drive rod; 25. Drive rod; 26. Pin. Detailed Implementation

[0018] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0020] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] like Figure 1 and Figure 2As shown, rice transplanters are currently a relatively mature product. The transplanting mechanism of a rice transplanter, as shown in CN201420654270.X, mainly includes a sprocket box 4, a drive sprocket shaft 5 extending through both ends at the rear end of the sprocket box 4, a large sprocket shaft 3 located at the front end of the sprocket box 4, a rotary box mounted at both ends of the large sprocket shaft 3, and several planting arms mounted on the rotary box. The rotation of the drive sprocket shaft 5 drives the sprocket mechanism inside the sprocket box 4 to drive the large sprocket shaft 3 to rotate synchronously, thereby realizing the rotation of the rotary box. The transplanting arm plants the rice seedlings, and the front end of a typical rice mulching transplanter usually has multiple planting mechanisms working simultaneously, which are installed on the lifting shaft 6. It is also equipped with a float connected to the lifting shaft 6 via a float adjustment frame 9. However, when adding an opening device, the existing design of the opening device on the rice mulching transplanter is unreasonable, resulting in problems such as insufficient opening accuracy, complex structure, and the need for an additional power source. Therefore, based on the existing structure, a new opening device suitable for rice mulching transplanters has been designed. The added perforation device is synchronously raised and lowered via the lifting shaft 6, and driven by the drive sprocket shaft 5 on the sprocket box 4, eliminating the need for additional driving force. The mounting rod 7, parallel to the lifting shaft 6, is mounted using the float adjustment frame 9 as a fulcrum. The perforation knife 1 is mounted on the mounting rod 7. After installation, the drive mechanism 2 typically has at least two sets, facilitating synchronous rotation of both ends of the mounting rod 7. The mounting rod 7 and the float adjustment frame 9 are fixed by a bushing 8, allowing for relative rotation of the mounting rod 7. Each sprocket box 4, after installation, forms a perforation knife 1 on each side. The perforation position of the knife tip is precisely at the rice planting inlet. Since the perforation knife 1 is driven by the drive mechanism 2, during operation, only the position and trajectory of the perforation knife 1 need to be adjusted. Because the power source is the same as the planting arm, and they are adjacent to each other, the perforation position is effectively guaranteed, preventing misalignment of the film perforation caused by the rotation of the drive mechanism 2 driven by the rotation of the drive sprocket shaft 5.

[0022] A further improvement is made to the drive mechanism 2, which includes a cam 23 mounted on the drive sprocket shaft 5, a transmission shaft 21 mounted on the cam 23, a drive rod 25 mounted on the mounting rod 7, and a transmission rod 24 whose two ends are respectively rotatably connected to the transmission shaft 21 and the drive rod 25.

[0023] Cam 23 is clamped to the extended end of the drive sprocket shaft 5, and a transmission shaft 21 extends outward from cam 23 to facilitate the rotation and fixation of one end of the transmission rod 24. One end of the drive rod 25 is fixed to the mounting rod 7, and the other end is rotatably connected to the transmission rod 24. The cam 23 and the mounting rod 7 are connected by the combination of the transmission shaft 21 and the drive rod 25. That is, when the drive sprocket shaft 5 rotates, cam 23 rotates synchronously, and the transmission shaft 21 rotates around the drive sprocket shaft 5. The transmission shaft 21 drives one end of the transmission rod 24 to rotate synchronously, so that the transmission rod 24 reciprocates and pulls the drive rod 25. Finally, the drive rod 25 drives the mounting rod 7 to rotate relative to it. The rotation of the mounting rod 7 drives the hole-opening knife 1 to flip at a certain angle to achieve the membrane breaking and hole opening operation. The entire drive structure is simple in components, easy to operate, highly stable, and will not have the problem of insufficient power.

[0024] A further improvement is made in that one end of the transmission rod 24 is provided with a bearing 22, and one end of the transmission rod 24 is connected to the transmission shaft 21 through the bearing 22; the connection end of the drive rod 25 and the transmission rod 24 is provided with a pin 26.

[0025] The transmission rod 24 adopts a structure similar to a fisheye joint shaft. One end is connected to the transmission shaft 21 via a bearing 22, and the other end is connected to the transmission rod 24 via a pin 26. During rotation, this design ensures both long-term rotational flexibility at the connection point of the transmission shaft 21 and relative push-pull flexibility of the lower end relative to the drive rod 25, preventing jamming. The drive rod 25 is formed by bending a metal plate. The connecting end is bent to form two relatively parallel connecting plates, with a limiting groove between the two plates. One end of the drive rod 25 is located within the limiting groove. This design better ensures relative rotational stability when connecting the transmission rod 24 and the pin 26, and also provides strong structural versatility and high stability.

[0026] Based on any of the above technical solutions, the hole-opening knife 1 is further improved to include a knife holder 12 with one end mounted on the mounting rod 7 and a knife body 11 with one end fixed on the knife holder 12. The front side of the knife holder 12 is provided with a mounting groove 13 with a fixing hole, and the end of the knife body 11 is fixed in the mounting groove 13.

[0027] When installing the cutter body 11, the end of the cutter body 11 is inserted into the mounting groove 13, and then fixed by directly inserting bolts or screws into the fixing hole. When the cutter body 11 is driven to open the hole by the drive sprocket shaft 5, the fixed position of the cutter body 11 can be accurately guaranteed, thereby avoiding the situation where the cutter body 11 tilts due to the resistance of the soil after breaking the film. It can also ensure that the tilt angle of the cutter body 11 is fixed after installation, avoiding the problem of opening the hole when breaking the film. Moreover, the structure of the mounting groove 13 can also make it easy to control the extension length of the cutter body 11. It can be adjusted by simply opening multiple holes or long strip holes on the cutter body 11.

[0028] A further improvement is that one end of the tool holder 12 is provided with an open clamping groove 15, and the open end of the clamping groove 15 is provided with a bolt mounting hole 14. After the mounting rod 7 is inserted into the clamping groove 15, it is clamped and fixed by installing bolts through the bolt mounting hole 14.

[0029] When connecting the tool holder 12 to the mounting rod 7, first align the mounting rod 7 with the clamping groove 15 of the tool holder 12, insert it, and move it to the desired position. Finally, pull the bolt into the bolt mounting hole 14 and tighten it with the nut to make the open end of the clamping groove 15 form a relative clamp. After tightening the bolt, the clamping groove 15 clamps and fixes the mounting rod 7. The operation is simple and the fixation is convenient. The outline of the clamping groove 15 is slightly larger than that of the mounting rod 7 and the shape is basically the same. When clamping, the clamping force is better. The shape of the clamping groove 15 is shown in the figure. One end of the tool holder 12 forms a C-shaped structure through the clamping groove 15.

[0030] A further improvement is made in that the mounting rod 7 is a square metal rod, and the bushing 8 is sleeved on the mounting rod 7 and fixed on one side to the float adjustment frame 9.

[0031] The mounting rod 7 adopts a square metal rod structure, which provides better stability after connecting and fixing the tool holder 12 and the drive mechanism 2, preventing self-rotation and thus making the trajectory of the drilling tool 1 more stable and precise, without rotation. Meanwhile, one end of the drive rod 25 is connected to it through a square hole, eliminating the need for a limiting structure and a positioning structure during assembly. At least two sets of bushings 8 are used, each consisting of an inner and an outer sleeve. The inner hole of the inner sleeve is a square hole structure, allowing the square mounting rod 7 to rotate relative to the drive mechanism 2 during its movement. One side of the bushing 8 is fixed to the float adjustment frame 9, which synchronously drives the lifting shaft 6 as it moves up and down. Especially when the float adjustment frame 9 adjusts the height of the float, it can also perform synchronous fine-tuning, ensuring the position adjustment of the front end of the tool body 11 in different scenarios.

[0032] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A hole-opening device for a rice mulching transplanter, comprising a lifting shaft (6), a plurality of sprocket boxes (4) with one end mounted on the lifting shaft (6), a float adjustment frame (9), a drive sprocket shaft (5) extending through the rear end of the sprocket boxes (4) at both ends, and a large sprocket shaft (3) at the front end of the sprocket boxes (4), characterized in that: It also includes an installation rod (7) arranged parallel to the lifting shaft (6), a hole-opening knife (1) provided on the installation rod (7), and a drive mechanism (2) provided between the installation rod (7) and the drive sprocket shaft (5). The installation rod (7) is fixed on the floating plate adjustment frame (9) by a bushing (8). A hole-opening knife (1) is provided on each side of the sprocket box (4). The hole-opening knife (1) drives the drive mechanism (2) to rotate the installation rod (7) by the rotation of the drive sprocket shaft (5) to realize the hole-opening operation of the film.

2. The hole-opening device for a rice mulching transplanter according to claim 1, characterized in that: The drive mechanism (2) includes a cam (23) mounted on the drive sprocket shaft (5), a transmission shaft (21) mounted on the cam (23), a drive rod (25) mounted on the mounting rod (7), and a transmission rod (24) rotatably connected at both ends to the transmission shaft (21) and the drive rod (25).

3. The hole-opening device for a rice mulching transplanter according to claim 2, characterized in that: One end of the transmission rod (24) is provided with a bearing (22), and one end of the transmission rod (24) is connected to the transmission shaft (21) through the bearing (22).

4. The hole-opening device for a rice mulching transplanter according to claim 2, characterized in that: The drive rod (25) and the transmission rod (24) are connected by a pin (26).

5. The hole-opening device for a rice mulching transplanter according to any one of claims 1 to 4, characterized in that: The hole-opening knife (1) includes a knife holder (12) with one end mounted on the mounting rod (7) and a knife body (11) with one end fixed on the knife holder (12). The front side of the knife holder (12) is provided with a mounting groove (13) with a fixing hole, and the end of the knife body (11) is fixed in the mounting groove (13).

6. The hole-opening device for a rice mulching transplanter according to claim 5, characterized in that: One end of the tool holder (12) is provided with an open clamping groove (15), and the open end of the clamping groove (15) is provided with a bolt mounting hole (14). After the mounting rod (7) is inserted into the clamping groove (15), it is clamped and fixed by installing bolts through the bolt mounting hole (14).

7. The hole-opening device for a rice mulching transplanter according to claim 6, characterized in that: The mounting rod (7) is a square metal rod, and the bushing (8) is sleeved on the mounting rod (7) and fixed on one side to the float adjustment frame (9).

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