Fertilizer throwing machine

Abstract

The utility model discloses a fertilizer throwing machine which comprises a machine frame installed on a tractor and a fertilizer box installed on the machine frame, two discharging openings are formed in the lower portion of the fertilizer box in a bilateral symmetry mode, a fertilizer throwing disc is arranged below each discharging opening, fertilizer throwing blades are arranged on the upper sides of the fertilizer throwing discs, and the fertilizer throwing blades are arranged on the lower sides of the fertilizer throwing discs. The two fertilizer throwing discs are installed on the two sides of the rear portion of the machine frame respectively, a rear power output shaft of a tractor is in transmission connection with the two fertilizer throwing discs through a transmission mechanism, and arc-shaped baffles fixed to the machine frame are arranged on the inclined front portions, close to the middles, of the two fertilizer throwing discs. Inclined baffles fixed on the rack are arranged on the sides, far away from the arc-shaped baffles, of the peripheries of the two fertilizer throwing discs, the inclined baffles incline in the direction far away from the fertilizer throwing discs from bottom to top, and the heights of the inclined upper ends of the inclined baffles are located between the tops of the fertilizer throwing blades and the fertilizer throwing discs. According to the utility model, the fertilizer spreading uniformity of the fertilizer spreader in the whole operation width is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and particularly relates to a fertilizer spreader. Background Art

[0002] A fertilizer spreader is a kind of agricultural machinery for fertilization, which can evenly spread fertilizers onto fields or other areas that need fertilization. The disc-type fertilizer spreader is a common fertilizer spreader, which mainly consists of a fertilizer tank, a conveying device, a fertilizer spreading disc, a transmission system, a traction device, etc. During operation, fertilizers are sent from the fertilizer tank to the high-speed rotating fertilizer spreading disc through the conveying device and are evenly spread out under the action of centrifugal force. Specifically, reference can be made to an electric control fertilizer spreader disclosed in Chinese Utility Model Patent CN205812775U. However, the uniformity of fertilizer spreading of the existing disc-type fertilizer spreader within the entire working width is not very ideal. Content of the Utility Model

[0003] Aiming at the defects in the prior art, the utility model provides a fertilizer spreader to improve the uniformity of fertilizer spreading of the fertilizer spreader within the entire working width.

[0004] The utility model provides a fertilizer spreader, which includes a frame installed on a tractor and a fertilizer tank installed on the frame. Two feeding openings are symmetrically arranged on the left and right sides of the lower part of the fertilizer tank. A fertilizer spreading disc is arranged below each feeding opening. Fertilizer spreading blades are arranged on the upper side of the fertilizer spreading disc. The two fertilizer spreading discs are respectively installed on both sides of the rear part of the frame. The rear power output shaft of the tractor is in transmission connection with the two fertilizer spreading discs through a transmission mechanism. Arc-shaped baffles fixed on the frame are arranged obliquely in front of the middle of the two fertilizer spreading discs;

[0005] On one side of the two fertilizer spreading discs away from the arc-shaped baffle, inclined baffles fixed on the frame are arranged. The inclined baffles are inclined in the direction away from the fertilizer spreading discs from bottom to top, and the height of the upper end of the inclined baffle is between the top of the fertilizer spreading blades and the fertilizer spreading disc.

[0006] Further, the inclination angle of the inclined baffle is 25° - 35°.

[0007] Further, a fixed bracket is arranged at the lower end of the inclined baffle. The fixed bracket is arranged on the lower side of the fertilizer spreading disc and fixed on the frame.

[0008] Further, the transmission mechanism includes a first transmission box and two second transmission boxes fixedly installed on the frame. The two second transmission boxes are respectively arranged on the left and right sides of the first transmission box. An input shaft is provided on the front side of the first transmission box, output shafts are provided on both the left and right sides of the first transmission box. Input shafts are provided on the opposite sides of the two second transmission boxes, and output shafts are provided on the upper sides of the two second transmission boxes. The input shaft on the front side of the first transmission box is connected to the rear power output shaft of the tractor through a drive rod. The output shafts on both sides of the first transmission box are respectively connected to the input shafts of the corresponding second transmission boxes on the same side through transmission rods. Each fertilizer throwing disc is coaxially fixed on the output shaft on the upper side of the corresponding second transmission box.

[0009] Further, an installation hole is provided at the center of the fertilizer throwing disc. A concave key is provided along the axial direction on the inner wall of the installation hole. The upper end of the output shaft of the second transmission box is provided with a connecting shaft passing through the installation hole. A convex key cooperating with the concave key is provided along the axial direction on the outer wall of the connecting shaft. A locking nut is threadedly connected to the upper end of the connecting shaft.

[0010] Further, a blanking adjustment mechanism is provided at each blanking port. The blanking adjustment mechanism includes a fixing plate, an adjustment plate and a driving mechanism;

[0011] The fixing plate is fixedly installed and blocks the lower end of the blanking port. A plurality of first material leakage ports are circumferentially and spacedly arranged on the fixing plate;

[0012] The adjustment plate is rotatably installed on the lower side of the fixing plate. A plurality of second material leakage ports are circumferentially and spacedly arranged on the adjustment plate;

[0013] The driving mechanism is used to drive the adjustment plate to rotate. Each second material leakage port is staggered or coincident with the first material leakage port.

[0014] Further, a front support arm extending forward is provided at the front part of the adjustment plate. The driving mechanism is a hydraulic telescopic rod hinged between the front support arm and the frame.

[0015] Further, a rear support arm extending backward is provided at the rear part of the adjustment plate. A sliding shaft is provided on the rear support arm. An arc-shaped notch extending along the track direction of the sliding shaft is provided at the front part of the fixing plate. The upper end of the sliding shaft passes through the arc-shaped notch and is provided with a handle.

[0016] Further, an adjustment scale is provided on the upper side of the fixing plate along the extending direction of the arc-shaped notch.

[0017] The beneficial effects of the present utility model are embodied in:

[0018] During operation, the rear power output shaft of the tractor drives the fertilizer spreading disc to rotate. Granular fertilizer leaks through the feeding port onto the fertilizer spreading disc. Under the action of centrifugal force, the granular fertilizer that falls onto the fertilizer spreading disc is scattered. In this application, by arranging inclined baffles around the fertilizer spreading disc, some of the scattered granular fertilizer will hit the inclined baffles and be thrown obliquely upward under the action of the inclined baffles. Some granular fertilizer is directly thrown without contacting the inclined baffles. In this way, the granular fertilizer that contacts the inclined baffles is scattered relatively close, and the granular fertilizer that does not contact the inclined baffles of the guide plate is scattered relatively far, thereby improving the uniformity of fertilizer spreading by the fertilizer spreader within the entire working width. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts do not necessarily draw to actual scale.

[0020] Figure 1 It is the rear view of the embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the arrangement of the arc-shaped baffle and the inclined baffle around the fertilizer spreading disc in the embodiment of the present invention;

[0022] Figure 3 It is a cross-sectional view of the fertilizer spreading disc in the embodiment of the present invention;

[0023] Figure 4 It is a schematic structural diagram of the transmission mechanism in the embodiment of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the feeding adjustment mechanism in the embodiment of the present invention.

[0025] In the drawings, 100 - frame; 200 - fertilizer tank; 210 - feeding port; 300 - fertilizer spreading disc; 310 - fertilizer spreading blades; 320 - mounting holes; 400 - transmission mechanism; 410 - first transmission box; 420 - second transmission box; 421 - connecting shaft; 422 - locking nut; 500 - arc-shaped baffle; 600 - inclined baffle; 610 - fixed bracket; 700 - feeding adjustment mechanism; 710 - fixing plate; 711 - first leakage port; 712 - arc-shaped notch; 713 - adjustment scale; 720 - adjustment plate; 721 - second leakage port; 722 - front support arm; 723 - rear support arm; 724 - sliding shaft; 725 - handle; 730 - hydraulic telescopic rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The embodiments of the technical solution of the present utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and therefore are only examples and cannot be used to limit the protection scope of the present utility model.

[0027] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the field to which the present utility model belongs.

[0028] As Figures 1-5 shown, the embodiment of the present utility model provides a fertilizer spreader, which includes a frame 100 installed on a tractor and a fertilizer tank 200 installed on the frame 100. Two feeding ports 210 are symmetrically arranged on the left and right sides of the lower part of the fertilizer tank 200. A fertilizer spreading disc 300 is arranged below each feeding port 210. A fertilizer spreading blade 310 is arranged on the upper side of the fertilizer spreading disc 300. The two fertilizer spreading discs 300 are respectively installed on both sides of the rear part of the frame 100. The rear power output shaft of the tractor is in transmission connection with the two fertilizer spreading discs 300 through a transmission mechanism 400.

[0029] Referring Figure 4 , the transmission mechanism 400 specifically includes a first transmission box 410 fixedly installed on the frame 100 and two second transmission boxes 420. The two second transmission boxes 420 are respectively arranged on the left and right sides of the first transmission box 410. An input shaft is arranged on the front side of the first transmission box 410. Output shafts are arranged on both the left and right sides of the first transmission box 410. Input shafts are arranged on the opposite sides of the two second transmission boxes 420. Output shafts are arranged on the upper sides of the two second transmission boxes 420. The input shaft on the front side of the first transmission box 410 is connected to the rear power output shaft of the tractor through a driving rod. The output shafts on both sides of the first transmission box 410 are respectively connected to the input shafts of the corresponding second transmission boxes 420 through transmission rods. Each fertilizer spreading disc 300 is coaxially fixed on the output shaft on the upper side of the corresponding second transmission box 420.

[0030] In order to facilitate fixing the fertilizer spreading disc 300 on the output shaft of the second transmission box 420, a mounting hole 320 is provided at the center of the fertilizer spreading disc 300. A concave key is arranged along the axial direction on the inner wall of the mounting hole 320. The upper end of the output shaft of the second transmission box 420 is provided with a connecting shaft 421 passing through the mounting hole 320. A convex key matching with the concave key is arranged along the axial direction on the outer wall of the connecting shaft 421. A locking nut 422 is threadedly connected to the upper end of the connecting shaft 421.

[0031] On the front side of the middle of each of the two fertilizer throwing discs 300, there are arc-shaped baffles 500 fixed on the frame 100. On the side of the periphery of the two fertilizer throwing discs 300 away from the arc-shaped baffle 500, there is an inclined baffle 600 fixed on the frame 100. The inclined baffle 600 is inclined away from the fertilizer throwing disc 300 from bottom to top, and the height of the upper end of the inclined baffle 600 is between the top of the fertilizer throwing blade 310 and the fertilizer throwing disc 300. In this embodiment, the inclination angle of the inclined baffle 600 is preferably 25°-35°.

[0032] To facilitate the fixed installation of the inclined baffle 600, a fixed bracket 610 is provided at the lower end of the inclined baffle 600. The fixed bracket 610 is arranged on the lower side of the fertilizer throwing disc 300 and fixed on the frame 100.

[0033] Refer to Figure 1 and Figure 5 When working, the rear power output shaft of the tractor drives the fertilizer throwing disc 300 to rotate. The granular fertilizer leaks through the feeding port 210 onto the fertilizer throwing disc 300. Under the action of centrifugal force, the granular fertilizer falling onto the fertilizer throwing disc 300 is scattered. In this application, by arranging the inclined baffle 600 around the fertilizer throwing disc 300, some of the scattered granular fertilizer will hit the inclined baffle 600 and be thrown obliquely upward under the action of the inclined baffle 600, and some granular fertilizer is directly thrown without contacting the inclined baffle 600. In this way, the granular fertilizer contacting the inclined baffle 600 is scattered relatively close, and the granular fertilizer not contacting the inclined baffle 600 of the guide plate is scattered relatively far, thereby improving the uniformity of fertilizer spreading within the entire working width of the fertilizer spreader.

[0034] A feeding adjustment mechanism 700 is provided at each feeding port 210. The feeding adjustment mechanism 700 includes a fixing plate 710, an adjustment plate 720 and a driving mechanism.

[0035] The fixing plate 710 is fixed and seals the lower end of the feeding port 210. A plurality of first leakage ports 711 are arranged at intervals along the circumferential direction on the fixing plate 710.

[0036] The adjustment plate 720 is rotatably installed on the lower side of the fixing plate 710. A plurality of second leakage ports 721 are arranged at intervals along the circumferential direction on the adjustment plate 720.

[0037] The driving mechanism is used to drive the adjustment plate 720 to rotate. Each second leakage port 721 is staggered or coincident with the first leakage port 711. In this embodiment, a front support arm 722 extending forward is provided at the front part of the adjustment plate 720, and the driving mechanism is a hydraulic telescopic rod 730 hinged between the front support arm 722 and the frame 100.

[0038] In this embodiment, the hydraulic telescopic rod 730 can be used to drive the adjusting plate 720 to rotate relative to the fixed plate 710, so as to adjust the coincidence degree between the second material leakage port 721 on the adjusting plate 720 and the first material leakage port 711 on the fixed plate 710, thereby automatically adjusting the feeding speed of the granular fertilizer.

[0039] Continue to refer to Figure 5 , a rear support arm 723 extending backward is provided at the rear of the adjusting plate 720. A sliding shaft 724 is arranged on the rear support arm 723. An arc-shaped notch 712 extending along the track direction of the sliding shaft 724 is provided at the front of the fixed plate 710. The upper end of the sliding shaft 724 passes through the arc-shaped notch 712 and a handle 725 is arranged. The hydraulic telescopic rod 730 does not have a self-locking function. When the hydraulic adjustment function is turned off, the adjusting plate 720 can also be manually adjusted through the handle 725, thereby manually adjusting the feeding speed of the granular fertilizer.

[0040] An adjustment scale 713 is arranged on the upper side of the fixed plate 710 along the extension direction of the arc-shaped notch 712, so that the opening degree of the adjustment can be accurately controlled through the adjustment scale 713.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A fertilizer spreading machine, comprising a frame mounted on a tractor and a fertilizer box mounted on the frame, wherein two feeding ports are symmetrically arranged at the lower part of the fertilizer box, a fertilizer spreading plate is arranged below each feeding port, a fertilizer spreading blade is arranged on the upper side of the fertilizer spreading plate, the two fertilizer spreading plates are respectively mounted on both sides of the rear part of the frame, the rear power output shaft of the tractor is connected to the two fertilizer spreading plates through a transmission mechanism, and the two fertilizer spreading plates are provided with an arc baffle fixed on the frame at the oblique front of the middle, characterized in that: An inclined baffle fixed on the frame is arranged around the two fertilizer throwing plates on one side away from the arc baffle. The inclined baffle is inclined from bottom to top in a direction away from the fertilizer throwing plate, and the height of the inclined upper end of the inclined baffle is located between the top of the fertilizer throwing blade and the fertilizer throwing plate.

2. The fertilizer spreading machine according to claim 1, characterized in that: The inclination angle of the inclined baffle is 25°-35°.

3. The fertilizer spreading machine according to claim 1, characterized in that: A fixed bracket is arranged at the oblique lower end of the inclined baffle, and the fixed bracket is arranged at the lower side of the fertilizer throwing plate and fixed on the frame.

4. The fertilizer spreading machine according to claim 1, characterized in that: The transmission mechanism includes a first transmission box and two second transmission boxes fixedly mounted on the frame, the two second transmission boxes are respectively arranged on the left and right sides of the first transmission box, an input shaft is arranged on the front side of the first transmission box, output shafts are arranged on the left and right sides of the first transmission box, input shafts are arranged on the opposite sides of the two second transmission boxes, and output shafts are arranged on the upper sides of the two second transmission boxes, the input shaft on the front side of the first transmission box is connected to the rear power output shaft of the tractor through a driving rod, the output shafts on both sides of the first transmission box are respectively connected to the input shafts of the second transmission boxes on the corresponding sides through transmission rods, and each fertilizer spreading disc is coaxially fixed on the output shaft on the upper side of the corresponding second transmission box.

5. The fertilizer spreading machine according to claim 4, characterized in that: A mounting hole is provided at the center of the fertilizer spreading plate, and a concave key is provided on the inner wall of the mounting hole along the axial direction. A connecting shaft passing through the mounting hole is provided on the upper end of the output shaft of the second transmission box, and a convex key matching with the concave key is provided on the outer wall of the connecting shaft along the axial direction. A locking nut is threadedly connected to the upper end of the connecting shaft.

6. The fertilizer spreading machine according to claim 1, characterized in that: Each of the material discharge ports is provided with a material discharge adjustment mechanism, and the material discharge adjustment mechanism comprises a fixed plate, an adjustment plate and a driving mechanism; The fixing plate fixes and blocks the lower end of the material discharge port, and a plurality of first material discharge ports are arranged at intervals along the circumferential direction on the fixing plate; The adjusting plate is rotatably mounted on the lower side of the fixing plate, and a plurality of second material leakage openings are arranged at intervals along the circumferential direction of the adjusting plate; The driving mechanism is used to drive the adjusting plate to rotate, and each of the second material leakage openings is staggered or overlapped with the first material leakage openings.

7. The fertilizer spreading machine according to claim 6, characterized in that: The front part of the adjustment plate is provided with a front support arm extending forward, and the driving mechanism is a hydraulic telescopic rod hinged between the front support arm and the frame.

8. The fertilizer spreading machine according to claim 6, characterized in that: The rear part of the adjustment plate is provided with a rear support arm extending backwards, and a sliding shaft is provided on the rear support arm. The front part of the fixed plate is provided with an arc-shaped slot extending along the track direction of the sliding shaft, and the upper end of the sliding shaft passes through the arc-shaped slot and is provided with a handle.

9. The fertilizer spreading machine according to claim 8, characterized in that: An adjustment scale is provided on the upper side of the fixing plate along the extending direction of the arc-shaped notch.

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