Suspended seeding device

Abstract

The utility model discloses a suspension type seeding device which comprises a rack, the rack is composed of a front rack, a rear rack, an upper connecting plate and a lower connecting plate, the upper connecting plate and the lower connecting plate are hinged between the front rack and the rear rack, and a tension spring is arranged between the upper connecting plate and the lower connecting plate; the front rack is fixedly connected with the traction rack, a seed box and a seed-metering device communicated with the seed box are fixed on the front rack, a furrow opener is fixed on one side of the rear rack, a depth limiting mechanism is arranged on the other side of the rear rack, and the furrow opener can float up and down along with the fluctuation of the terrain under the action of a tension spring and the rear rack; the land wheel mechanism is connected with the front rack through a hexagonal shaft, the hexagonal shaft is connected with the seed-metering device through a chain wheel transmission mechanism, and the land wheel mechanism drives the chain wheel transmission mechanism to drive the seed-metering device to rotate for seed metering. The seed-metering device and the furrow opener of the device are in a split type, the seed-metering device is fixed during seeding, and only the furrow opener floats up and down, so that the stability of the seed-metering device is improved, the stable operation during seed filling and seed suction is ensured, and the void rate of seeding is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a suspended seeding device. Background Art

[0002] my country has a vast territory, rich resources and a large population. The development of agriculture is of vital importance to my country. With the development of the times and technology, my country has gradually realized agricultural mechanization, among which the application of seed drills occupies a large part of the agricultural machinery industry. Due to the wide variety of terrain in my country, the adaptability requirements for seed drills are relatively high. Many areas have uneven terrain or high land preparation costs. In order to adapt to this irregular terrain, a suspended seeding method has appeared on the market. Its characteristic is that the furrow opener can float up and down with the height of the terrain, thereby ensuring consistent seeding depth and improving the germination rate.

[0003] However, the seed meter on the existing suspended seeding device is installed together with the furrow opener. This connection structure causes the seed meter to float up and down with the furrow opener during operation, thereby increasing the bumps experienced by the seed meter, causing the seed meter to easily fall off during the process of clamping or supporting seeds and resulting in no seedlings emerging from the empty holes. Summary of the invention

[0004] The utility model provides a suspended sowing device, in which the seeding device and the furrow opener are separated. During sowing, the seeding device is fixed and only the furrow opener floats up and down, which solves the problem of seeds falling and causing holes due to the vibration caused by the up and down floating of the seeding device. The specific technical scheme is as follows:

[0005] The suspended seeding device includes a frame, which is characterized in that the frame is composed of a front frame, a rear frame, and an upper connecting plate and a lower connecting plate hinged between the front and rear frames, and a tension spring is arranged between the upper connecting plate and the lower connecting plate; the front frame is connected and fixed to the traction frame, a seed box and a seed meter connected to the seed box are fixed on the front frame, a furrow opener is fixed on one side of the rear frame, and a limited depth mechanism is arranged on the other side of the rear frame, and under the action of the tension spring and the rear frame, the furrow opener can float up and down with the undulation of the terrain; the ground wheel mechanism is connected to the front frame through a hexagonal shaft, and the hexagonal shaft is connected to the seed meter through a sprocket transmission mechanism, and the ground wheel mechanism drives the sprocket transmission mechanism to drive the seed meter to rotate and seed.

[0006] Furthermore, the number of the upper connecting plates and the number of the lower connecting plates are both two, and the front frame and the rear frame are connected together through four connecting plates to form a suspension mechanism.

[0007] Furthermore, the trencher includes a support leg and a trenching shovel fixed on the support leg. Side plates are provided on both sides of the support leg. The ends of the two side plates away from the support leg are connected and fixed to the rear frame through flanges. The upper end of the support leg is inserted into the front frame and can float up and down along the front frame.

[0008] Furthermore, the depth limiting mechanism includes a depth limiting wheel and an adjusting assembly, one end of the adjusting assembly is connected and fixed to the rear frame, and the other end of the adjusting assembly is connected to the depth limiting wheel. By moving the depth limiting wheel up and down by the adjusting assembly, the furrowing depth of the furrow opener and the sowing depth of the seed meter can be controlled.

[0009] Furthermore, the adjusting assembly includes an outer sleeve, an inner sleeve and an adjusting screw. The outer sleeve is fixed on the rear frame, one end of the inner sleeve is passed through the outer sleeve, and the other end of the inner sleeve is connected to the depth limiting wheel. The adjusting screw is arranged in the inner sleeve and screwed with the nut in the inner sleeve. A first bevel gear is arranged on the upper end of the adjusting screw, and the first bevel gear is meshed with the second bevel gear on the crank. The adjusting screw is driven to rotate by turning the crank, so that the inner sleeve rises or falls along the outer sleeve.

[0010] Furthermore, the adjustment component also includes an end cover, which is connected and fixed to the outer sleeve, the crank is arranged on the end cover, and the first bevel gear and the second bevel gear are accommodated in the end cover.

[0011] Furthermore, there are two depth limiting wheels, which are connected by a depth limiting wheel axle. The depth limiting wheel axle is installed in a sleeve and is rotatably connected to a bearing in the sleeve. The sleeve is fixedly connected to an inner sleeve. A mud scraper is provided outside the depth limiting wheel, and the mud scraper is fixed on a connecting rod of the inner sleeve.

[0012] Furthermore, a vertical plate with scale lines is arranged on the inner sleeve, and the vertical plate is inserted into the support seat of the outer sleeve and can slide along the support seat.

[0013] Furthermore, the ground wheel mechanism includes a ground wheel mounting frame, the ground wheel is rotatably connected to the lower end of the ground wheel mounting frame through a ground wheel shaft, the upper end of the ground wheel mounting frame is hinged to the hexagonal shaft of the front frame, a transmission shaft is vertically arranged between the hexagonal shaft and the ground wheel shaft, a first bevel gear is arranged at one end of the ground wheel shaft, a second bevel gear meshing with the first bevel gear of the ground wheel shaft is arranged at one end of the transmission shaft, a third bevel gear is arranged at the other end of the transmission shaft, a fourth bevel gear meshing with the third bevel gear of the transmission shaft is arranged at one end of the hexagonal shaft, and the other end of the hexagonal shaft is connected to the seed metering device through a sprocket transmission mechanism.

[0014] Furthermore, the sprocket transmission mechanism includes a driving sprocket and a passive sprocket arranged in a sprocket box, the driving sprocket and the passive sprocket are connected by a chain, the driving sprocket is installed on a hexagonal shaft, and the passive sprocket is installed on a driving shaft of the gearbox of the seed metering device.

[0015] The utility model has a simple structure and a reasonable design. The seed meter and the furrow opener of the device are split. During sowing, the seed meter is fixed and only the furrow opener floats up and down, which improves the stability of the seed meter and ensures smooth operation during seed filling and seed suction, greatly reduces the void rate of sowing, and completely solves the void caused by seeds falling due to the vibration generated by the up and down floating of the seed meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is the front view of the utility model;

[0018] Figure 3 It is a schematic diagram of the exploded structure of the utility model;

[0019] Figure 4 It is a three-dimensional diagram of the furrow opener of the utility model;

[0020] Figure 5 It is a three-dimensional diagram of the depth limiting mechanism of the utility model;

[0021] Figure 6 It is a side view of the depth limiting mechanism of the utility model;

[0022] Figure 7 yes Figure 6 The cross-sectional view of the AA surface;

[0023] Figure 8 It is a schematic diagram of the exploded structure of the sprocket transmission mechanism of the utility model;

[0024] Fig. 9 It is a three-dimensional diagram of the ground wheel mechanism of the utility model;

[0025] Fig.10 It is a schematic diagram of the connection structure between the ground wheel mechanism and the front frame of the utility model. DETAILED DESCRIPTION

[0026] In order to better understand the purpose, function and specific design scheme of the utility model, the suspended seeding device of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] like Figure 1-Figure 3 As shown, the suspension seeding device of the utility model includes a frame 1, which is composed of a front frame 11, a rear frame 12, and an upper connecting plate 13 and a lower connecting plate 14 hinged between the front and rear frames. The number of the upper connecting plate 13 and the lower connecting plate 14 are both two, and the front frame 11 and the rear frame 12 are connected together by four connecting plates to form a suspension mechanism.

[0028] The upper end of the front frame 11 is provided with a fixing plate 115, on which the seed box 3 is fixed, and the lower end of the seed box 3 is provided with a seeding device 2 connected to the seed box 3, which is fixed on the mounting seat 111 of the front frame 11. A furrow opener 4 is fixed on one side of the rear frame 12, and a limited depth mechanism 5 is provided on the other side of the rear frame 12. The ground wheel mechanism 6 is connected to the front frame 11 through a hexagonal shaft 113, and the hexagonal shaft 113 is connected to the seeding device 2 through a sprocket transmission mechanism 8, and the ground wheel mechanism 6 drives the sprocket transmission mechanism 8 to drive the seeding device 2 to rotate and seed. When working, the front frame 11 is fixed to the traction frame through a fixing seat 114, and the seeding device 2 does not float, which can play a role in stabilizing the seed filling. Under the action of the tension spring and the rear frame, the furrow opener 4 can float up and down with the ups and downs of the terrain, and achieve an ideal furrowing effect and sowing effect in an uneven field.

[0029] like Figure 1 and Figure 4 As shown, the furrow opener 4 includes a leg 42 and a furrowing shovel 44 fixed on the leg 42. Side plates 41 are provided on both sides of the leg. One end of the side plates 41 away from the leg 42 is connected and fixed to the rear frame 12 through a flange 43. The upper end of the leg 42 is inserted into the front frame 11 and can float up and down along the front frame 11. An anti-winding roller 9 is provided on the top of the furrowing shovel 44, which can effectively prevent the entanglement of weeds or platycodon during sowing.

[0030] like Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the depth limiting mechanism 5 includes a depth limiting wheel 51 and an adjusting component 52. One end of the adjusting component 52 is fixedly connected to the rear frame 12, and the other end of the adjusting component 52 is connected to the depth limiting wheel 51. By moving the depth limiting wheel 51 up and down by the adjusting component 52, the furrowing depth of the furrow opener 4 and the sowing depth of the seed meter 2 can be controlled.

[0031] The adjustment assembly 52 includes an outer sleeve 521, an inner sleeve 522 and an adjustment screw 525. The outer sleeve 521 is fixed on the rear frame 12. One end of the inner sleeve 522 is inserted into the outer sleeve 521. The other end of the inner sleeve 522 is connected to the depth-limiting wheel 51. The adjustment screw 525 is arranged in the inner sleeve 522 and is screwed with a nut 5224 in the inner sleeve 522. The nut 5224 is fixed inside the upper end of the inner sleeve 522. A first bevel gear 526 is arranged at the upper end of the adjustment screw 525. The first bevel gear 526 is meshed with a second bevel gear 527 on the crank 524. The crank 524 is rotated to drive the adjustment screw 525 to rotate, so that the inner sleeve 522 rises or falls along the outer sleeve 521.

[0032] The adjustment assembly 52 further includes an end cover 523 , which is connected and fixed to the outer sleeve 521 . The crank 524 is disposed on the end cover 523 , and the first bevel gear 526 and the second bevel gear 527 are accommodated in the end cover 523 .

[0033] There are two depth limiting wheels 51, which are connected by a depth limiting wheel shaft 511. The depth limiting wheel shaft 511 is installed in a sleeve 512 and is rotatably connected to a bearing in the sleeve 512. The sleeve 512 is fixedly connected to an inner sleeve 522. A mud scraper 5223 is provided outside the depth limiting wheel 51, and the mud scraper 5223 is fixed to a connecting rod 5222 of the inner sleeve 522.

[0034] The inner sleeve 522 is provided with a vertical plate 5221 with scale lines, and the vertical plate 5221 is inserted into the support seat 5211 of the outer sleeve 521 and can slide along the support seat 5211. Through the scale lines provided on the vertical plate 5221, the position of the depth-limiting wheel can be accurately controlled.

[0035] like Figure 3 , Fig. 9 and Fig.10 As shown, the ground wheel mechanism 6 includes a ground wheel mounting frame 61, and the ground wheel 62 is rotatably connected to the lower end of the ground wheel mounting frame 61 through the ground wheel shaft 63. The upper end of the ground wheel mounting frame 61 is hinged to the hexagonal shaft 113 of the front frame 11, and a transmission shaft 661 is vertically arranged between the hexagonal shaft 113 and the ground wheel shaft 63. A first bevel gear 631 is arranged at one end of the ground wheel shaft 63, and a second bevel gear 662 meshing with the first bevel gear 631 of the ground wheel shaft is arranged at one end of the transmission shaft 661, and a third bevel gear 663 is arranged at the other end of the transmission shaft 661. A fourth bevel gear 1131 meshing with the third bevel gear 663 of the transmission shaft 661 is arranged at one end of the hexagonal shaft 113, and the other end of the hexagonal shaft 113 is connected to the seed metering device 2 through a sprocket transmission mechanism 8.

[0036] The transmission shaft 661 is disposed in the shaft sleeve 66 , the first bevel gear 631 and the second bevel gear 662 are accommodated in the first housing 64 , and the third bevel gear 663 and the fourth bevel gear 1131 are accommodated in the second housing 65 .

[0037] like Figure 1 and Figure 8 As shown, the sprocket transmission mechanism 8 includes a driving sprocket 82 and a passive sprocket 83 which are arranged in a sprocket box 81. The driving sprocket 82 and the passive sprocket 83 are connected by a chain 84. The driving sprocket 82 is installed on the hexagonal shaft 113, and the passive sprocket 83 is installed on the driving shaft of the gearbox of the seed metering device 2.

[0038] The hexagonal shaft 113 is installed in the shaft sleeve 112 of the front frame 11 and is rotatably connected to the bearing in the shaft sleeve 112 .

[0039] When in use, the depth-limiting wheel 51 is adjusted to a suitable height through the adjusting component 52, and the front frame 11 is fixed on the traction frame. The seeding device 2 and the furrow opener 4 of this device are split. When sowing, the seeding device 2 is fixed, and the furrow opener 4 can float up and down with the ups and downs of the terrain under the action of the tension spring and the rear frame, so as to achieve an ideal furrowing effect and sowing effect in an uneven field. In this way, the stability of the seeding device is improved, and the operation is stable during seed filling and seed suction, so that the hole rate of sowing is greatly reduced, and the hole caused by the seed falling due to the vibration caused by the up and down floating of the seeding device is completely solved.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A suspended seeding device, comprising a frame, characterized in that: The frame consists of a front frame, a rear frame, and an upper connecting plate and a lower connecting plate hinged between the front and rear frames, and a tension spring is arranged between the upper connecting plate and the lower connecting plate; the front frame is connected and fixed to the traction frame, a seed box and a seed meter connected to the seed box are fixed on the front frame, a furrow opener is fixed on one side of the rear frame, and a limited depth mechanism is arranged on the other side of the rear frame, and under the action of the tension spring and the rear frame, the furrow opener can float up and down with the undulation of the terrain; the ground wheel mechanism is connected to the front frame through a hexagonal shaft, and the hexagonal shaft is connected to the seed meter through a sprocket transmission mechanism, and the ground wheel mechanism drives the sprocket transmission mechanism to drive the seed meter to rotate and seed.

2. The suspended seeding device according to claim 1, characterized in that: The number of the upper connecting plates and the number of the lower connecting plates are both two, and the front frame and the rear frame are connected together through four connecting plates to form a suspension mechanism.

3. The suspended seeding device according to claim 1, characterized in that: The furrow opener includes a support leg and a furrowing shovel fixed on the support leg. Side plates are arranged on both sides of the support leg. One end of the two side plates away from the support leg is connected and fixed to the rear frame through a flange. The upper end of the support leg is inserted into the front frame and can float up and down along the front frame.

4. The suspended seeding device according to claim 1, characterized in that: The depth limiting mechanism includes a depth limiting wheel and an adjusting assembly. One end of the adjusting assembly is fixedly connected to the rear frame, and the other end of the adjusting assembly is connected to the depth limiting wheel. By moving the depth limiting wheel up and down by the adjusting assembly, the furrowing depth of the furrow opener and the sowing depth of the seed meter can be controlled.

5. The suspended seeding device according to claim 4, characterized in that: The adjusting assembly includes an outer sleeve, an inner sleeve and an adjusting screw. The outer sleeve is fixed on the rear frame. One end of the inner sleeve is passed through the outer sleeve. The other end of the inner sleeve is connected to the depth limiting wheel. The adjusting screw is arranged in the inner sleeve and screwed with a nut in the inner sleeve. A first bevel gear is arranged on the upper end of the adjusting screw. The first bevel gear is meshed with the second bevel gear on the crank. The adjusting screw is driven to rotate by turning the crank, so that the inner sleeve rises or falls along the outer sleeve.

6. The suspended seeding device according to claim 5, characterized in that: The adjustment component also includes an end cover, which is connected and fixed to the outer sleeve. The crank is arranged on the end cover, and the first bevel gear and the second bevel gear are accommodated in the end cover.

7. The suspended seeding device according to claim 4, characterized in that: There are two depth limiting wheels, which are connected by a depth limiting wheel axle. The depth limiting wheel axle is installed in a sleeve and is rotatably connected to a bearing in the sleeve. The sleeve is fixedly connected to an inner sleeve. A mud scraper is arranged outside the depth limiting wheel, and the mud scraper is fixed on a connecting rod of the inner sleeve.

8. The suspended seeding device according to claim 5, characterized in that: A vertical plate with scale lines is arranged on the inner sleeve, and the vertical plate is penetrated in the supporting seat of the outer sleeve and can slide along the supporting seat.

9. The suspended seeding device according to claim 1, characterized in that: The ground wheel mechanism includes a ground wheel mounting frame, the ground wheel is rotatably connected to the lower end of the ground wheel mounting frame through the ground wheel shaft, the upper end of the ground wheel mounting frame is hinged to the hexagonal shaft of the front frame, a transmission shaft is vertically arranged between the hexagonal shaft and the ground wheel shaft, a first bevel gear is arranged at one end of the ground wheel shaft, a second bevel gear meshing with the first bevel gear of the ground wheel shaft is arranged at one end of the transmission shaft, a third bevel gear is arranged at the other end of the transmission shaft, a fourth bevel gear meshing with the third bevel gear of the transmission shaft is arranged at one end of the hexagonal shaft, and the other end of the hexagonal shaft is connected to the seed metering device through a sprocket transmission mechanism.

10. The suspended seeding device according to claim 1 or 9, characterized in that: The sprocket transmission mechanism comprises a driving sprocket and a passive sprocket which are arranged in a sprocket box. The driving sprocket and the passive sprocket are connected by a chain. The driving sprocket is installed on a hexagonal shaft, and the passive sprocket is installed on a driving shaft of a gearbox of the seed metering device.

Images