Building leg lifting device of fertilizer applicator

Abstract

The utility model relates to the technical field of agricultural machinery, and provides a fertilizer applicator building leg lifting device which comprises a building leg support, the building leg support is movably installed on a mini-tiller, at least one side of the building leg support is provided with a building leg, the building leg is communicated with a telescopic hose, and the end, away from the building leg, of the telescopic hose is communicated with a fertilizer applicator. The fertilizer applicator is mounted at the top of the mini-tiller; a guide pushing assembly for pushing the building legs to ascend and descend is connected to the building leg support and installed on the mini-tiller, the end, away from the building leg support, of the guide pushing assembly is connected with a push-pull line, and the end, away from the guide pushing assembly, of the push-pull line is connected with an operation handle. By controlling the lifting of the building legs, the building legs can be inserted into soil for fertilization or seeding, the operation is simple and convenient, and the fertilization or seeding effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a fertilizer spreader leg lifting device. Background Art

[0002] The micro-tillage machine is powered by a small diesel engine or gasoline engine, and has the characteristics of light weight, small size and simple structure. It is widely used in dry land, paddy fields, orchards in plains, mountainous areas and hills. It can be equipped with corresponding machinery for pumping water, fertilizing, sowing, spraying, spraying and other operations. It can also tow a trailer for short-distance transportation. The micro-tillage machine can be freely used in the field, which is convenient for users to use and store, eliminating the trouble of large agricultural machinery being unable to enter mountain fields. It is the best choice for farmers and consumers to replace ox-plowing.

[0003] At present, there are many micro-tillage machines with fertilization and sowing functions on the market. For example, there is a Chinese utility model patent with patent number CN201520190393.7 and patent name "Micro-tillage machine fertilization integrated device", which includes a machine base, a power device, a driving wheel and a tillage head mechanism. The power device is installed on the machine base, the driving wheel is installed under the machine base, the driving wheel is connected to the power device belt, and the tillage head mechanism is fixedly installed at the front end of the machine base; the tillage head mechanism includes a barrel, a feeding channel connected to the bottom of the barrel, a furrow opener installed in front of the feeding channel, and a leveling plate installed behind the feeding channel, which realizes the multi-integrated use of loosening soil, furrowing, fertilizing, sowing, and leveling, effectively reduces the production and use costs, improves work efficiency, has a low production cost, is easy to install and use, and meets the needs of agricultural cultivation. Although the above device can realize the function of fertilization, the fertilization component is exposed to the surface, does not have the function of lifting and lowering, and is difficult to extend into the soil, resulting in fertilizer or seeds floating on the surface, and poor fertilization or sowing effects. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a fertilizer applicator leg lifting device, which controls the lifting of the legs so that the legs can be inserted into the soil for fertilizing or sowing, is easy to operate, and has good fertilizing or sowing effects.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A fertilizer spreader floor leg lifting device comprises a floor leg bracket, the floor leg bracket is movably mounted on a micro-tillage machine, at least one side of the floor leg bracket is mounted with a floor leg, the floor leg is connected with a telescopic hose, one end of the telescopic hose away from the floor leg is connected with a fertilizer spreader, and the fertilizer spreader is mounted on the top of the micro-tillage machine;

[0007] The building leg bracket is connected to a guide pushing component for pushing the building leg to lift and lower. The guide pushing component is installed on the micro-tiller. The end of the guide pushing component away from the building leg bracket is connected to a push-pull wire, and the end of the push-pull wire away from the guide pushing component is connected to an operating handle.

[0008] As an improved solution, the guide pushing assembly includes a guide cylinder, which is installed on the micro-tiller. A push rod is slidably inserted into the guide cylinder, one end of the push rod is hingedly connected to the building leg bracket, and the other end is hingedly connected to the push-pull wire.

[0009] As an improved solution, a limiting mechanism for limiting the movement stroke of the push rod is further provided on the guide cylinder.

[0010] As an improved solution, the limiting mechanism includes a limiting cylinder, the limiting cylinder is installed on the guide cylinder and communicated with the guide cylinder, a limiting bead is movably installed in the limiting cylinder, an upper limiting groove and a lower limiting groove are provided on the push rod and located in the guide cylinder, and the limiting bead is clamped with the upper limiting groove and the lower limiting groove;

[0011] A first spring is also installed in the limiting cylinder. One end of the first spring abuts against the limiting bead, and the other end abuts against the adjusting screw. The adjusting screw is threadably installed on the limiting cylinder.

[0012] As an improved solution, sealing grooves are respectively provided at both ends of the guide cylinder in the axial direction, and sealing rings are respectively installed in the sealing grooves, and the sealing rings are sleeved on the push rod.

[0013] As an improved solution, the building leg bracket includes two plates arranged opposite to each other, a plurality of connecting support components are connected between the two plates, and the connecting support components include a supporting tube, the supporting tube is arranged between the two plates, a first connecting rod is passed through the supporting tube, and both ends of the first connecting rod are respectively connected to the plates;

[0014] One end of the two plate bodies is rotatably mounted on the tilling part of the micro-tillage machine, and the other end is hingedly connected to the guide pushing assembly.

[0015] As an improved solution, a connecting sleeve is installed on the building leg, a third connecting rod is installed on the building leg bracket, the connecting sleeve is slidably sleeved on the third connecting rod, and is fixed in position by bolts arranged on the side wall.

[0016] As an improved solution, a buried plate is movably installed at the bottom of the building leg, and the buried plate is rotatably installed on a first support shaft arranged on the building leg. The front end of the buried plate close to the travel direction of the micro-tiller is connected to a second connecting rod. A second support shaft is provided on the building leg and above the first support shaft, and a second spring is connected between the second support shaft and the second connecting rod.

[0017] As an improved solution, the buried plate includes a connecting portion and a buried portion extending and bent from the connecting portion to the end of the leg in the direction of travel, the connecting portion is rotatably mounted on the first support shaft, and the second connecting rod is mounted on the connecting portion.

[0018] As an improved solution, the buried portion and the connecting portion are an integral structure.

[0019] After adopting the above technical solution, the beneficial effects of the utility model are:

[0020] A building leg bracket is provided, the building leg bracket is movably installed on the micro-tillage machine, at least one side of the building leg bracket is installed with a building leg, the building leg is connected with a telescopic hose, the telescopic hose is connected to a fertilizer applicator, and a guide push component for pushing the building leg to lift and lower is connected to the building leg bracket, the end of the guide push component away from the building leg bracket is connected to a push-pull line, the push-pull line is connected to an operating handle, and the operating handle can control the movement of the guide push component through the push-pull line, the guide push component pushes the building leg bracket to lift and lower, and then drives the building leg to be inserted into the tilled soil, the fertilizer applicator transports fertilizer or seeds to the building leg through the telescopic hose, and buries the fertilizer or seeds into the soil through the bottom of the building leg, thereby fertilizing or sowing in the soil, the operation is simple, and the fertilization or sowing effect is good, which solves the problem that the fertilization component of the fertilization device of the current micro-tillage machine is exposed on the surface, difficult to extend into the soil, the fertilization or sowing effect is poor, and subsequent manual burial is required, which is inconvenient for tillage;

[0021] The guide push assembly includes a guide cylinder, a push rod is slidably inserted into the guide cylinder, one end of the push rod is hingedly connected to the building leg bracket, and the other end is hingedly connected to the push-pull wire. The push rod can be pushed to move axially along the guide cylinder through the push-pull wire, thereby driving the building leg bracket to move up and down on the micro-tillage machine;

[0022] The guide cylinder is provided with a limit mechanism for limiting the movement stroke of the push rod, and the upper limit position and the lower limit position of the lifting movement of the push rod can be limited by the limit mechanism;

[0023] A burying plate is movably installed at the bottom of the building leg, and the burying plate is rotatably installed on the first supporting shaft arranged on the building leg. A second connecting rod is connected to the front end of the burying plate close to the traveling direction of the micro-tillage machine, and a second supporting shaft is provided on the building leg and above the first supporting shaft. A second spring is connected between the second supporting shaft and the second connecting rod. The ditch after fertilizing or sowing the building leg can be completely filled and flattened through the burying plate, so that the fertilizer or seeds can be deeply buried in the soil, further ensuring the fertilization or sowing effect of the building leg, and the soil surface treated by the burying plate is flat, and the tillage effect is good. By arranging a second spring between the second supporting shaft and the second connecting rod, the second spring can apply tension to the front end of the burying plate in the traveling direction, so that the rear end of the burying plate can move downward and close to the soil surface, which is conducive to the filling and flattening of the ditch.

[0024] In summary, the utility model controls the lifting of the building legs so that the building legs can be inserted into the soil for fertilizing or sowing, which is easy to operate and has good fertilizing or sowing effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In addition, in the drawings, the components or parts are not necessarily drawn according to the actual scale.

[0026] Figure 1 It is a structural schematic diagram of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the guide push assembly and the limit mechanism in the utility model;

[0028] Figure 3 It is a structural schematic diagram of the building leg bracket in the utility model;

[0029] Figure 4 It is a structural schematic diagram of the buried plate in the utility model;

[0030] Reference numerals:

[0031] 1. Building leg bracket, 101. Plate body, 102. Connecting support assembly, 1021. Support tube, 1022. First connecting rod, 2. Micro-tillage machine, 201. Tillage part, 3. Building leg, 4. Telescopic hose, 5. Fertilizer, 6. Guide push assembly, 601. Guide cylinder, 602. Push rod, 603. Sealing groove, 7. Push-pull line, 8. Operating handle, 9. Limiting mechanism, 901. Limiting cylinder, 902. Limiting bead, 903. Upper limit groove, 904. Lower limit groove, 905. First spring, 906. Adjusting screw, 10. Sealing ring, 11. Connecting sleeve, 12. Third connecting rod, 13. Buried plate, 1301. Connecting part, 1302. Buried part, 14. First supporting shaft, 15. Second connecting rod, 16. Second supporting shaft, 17. Second spring, 18. Fertilizer hopper. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0035] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0036] like Figure 1-Figure 3As shown, a fertilizer applicator floor leg lifting device comprises a floor leg bracket 1, which is movably mounted on a micro-tillage machine 2. Specifically, in this embodiment, the floor leg bracket 1 is rotatably mounted on a tillage part 201 of the micro-tillage machine 2. A floor leg 3 is mounted on at least one side of the floor leg bracket 1. The floor leg 3 is connected with a telescopic hose 4. The end of the telescopic hose 4 away from the floor leg 3 is connected with a fertilizer applicator 5. The telescopic hose 4 facilitates the movement of the floor leg bracket 1. The top of the fertilizer applicator 5 is connected with a fertilizer hopper 18. The fertilizer applicator 5 is mounted on the top of the micro-tillage machine 2. The fertilizer or seeds in the fertilizer hopper 18 enter the telescopic hose 4 successively through the fertilizer applicator 5, and are transported to the floor leg 3 through the telescopic hose 4, and are transported to the soil by the floor leg 3. In this embodiment, two floor legs 3 are relatively arranged, and are respectively located on both sides of the floor leg bracket 1. Similarly, two telescopic hoses 4 connected to the floor leg 3 are also arranged, and are both connected to the fertilizer applicator 5.

[0037] The building leg bracket 1 is connected with a guide pushing component 6 for pushing the building leg 3 to move up and down. The guide pushing component 6 is fixedly installed on the micro-tillage machine 2. The end of the guide pushing component 6 away from the building leg bracket 1 is connected to the push-pull wire 7. The end of the push-pull wire 7 is installed on the micro-tillage machine 2 through the bracket. In this embodiment, the push-pull wire 7 adopts a soft shaft push-pull wire. The end of the push-pull wire 7 away from the guide pushing component 6 is connected to the operating handle 8. The operating handle 8 can control the movement of the guide pushing component 6 through the push-pull wire 7. The guide pushing component 6 pushes the building leg bracket 1 to move up and down, thereby driving the building leg 3 to be inserted into the cultivated soil. The fertilizer applicator 5 transports fertilizer or seeds to the building leg 3 through the telescopic hose 4, and buries it into the soil through the bottom of the building leg 3. In this way, fertilization or sowing can be carried out in the soil. The operation is simple and the fertilization or sowing effect is good. The problem that the fertilization component of the fertilization device of the current micro-tillage machine 2 is exposed on the surface and difficult to extend into the soil, the fertilization or sowing effect is poor, and subsequent manual burial is required, which is inconvenient for farming.

[0038] Combination Figure 1 and Figure 2 As shown, in some embodiments of the utility model, the guide pushing assembly 6 includes a guide cylinder 601, which is fixedly installed on the micro-tiller 2. A push rod 602 is slidably inserted into the guide cylinder 601. One end of the push rod 602 is hingedly connected to the building leg bracket 1, and the other end is hingedly connected to the push-pull wire 7. The push-pull wire 7 can push the push rod 602 to move axially along the guide cylinder 601, thereby driving the building leg bracket 1 to move up and down on the micro-tiller 2.

[0039] Combination Figure 1 and Figure 2 As shown, in some embodiments of the utility model, a limiting mechanism 9 for limiting the movement stroke of the push rod 602 is also provided on the guide cylinder 601. The limiting mechanism 9 can limit the upper limit position and the lower limit position of the lifting and lowering movement of the push rod 602, thereby allowing the leg bracket 1 and the leg 3 to move within a certain range.

[0040] Combination Figure 1 and Figure 2 As shown, in some embodiments of the present utility model, the limiting mechanism 9 includes a limiting cylinder 901, the limiting cylinder 901 is fixedly mounted on the guide cylinder 601 and communicated with the guide cylinder 601, a limiting bead 902 is movably mounted in the limiting cylinder 901, an upper limit groove 903 and a lower limit groove 904 are provided on the push rod 602 and located in the guide cylinder 601, the upper limit groove 903 and the lower limit groove 904 are both arranged in an arc-shaped structure, and the limiting bead 902 is clamped with the upper limit groove 903 and the lower limit groove 904;

[0041] A first spring 905 is also installed in the limiting cylinder 901. One end of the first spring 905 rests on the limiting bead 902, and the other end rests on the adjusting screw 906. The adjusting screw 906 is threadedly installed on the limiting cylinder 901. By rotating the adjusting screw 906, the force of the first spring 905 on the limiting bead 902 can be adjusted, and then the limiting force of the limiting bead 902 on the push rod 602 can be adjusted, so that the push rod 602 can be switched between the upper limit position and the lower limit position under force.

[0042] Combination Figure 2 As shown, in some embodiments of the utility model, sealing grooves 603 are respectively provided at both ends of the guide cylinder 601 along the axial direction, and sealing rings 10 are respectively installed in the sealing grooves 603. The sealing rings 10 are all sleeved on the push rod 602. By setting the sealing grooves 603, soil and dust are prevented from entering the guide cylinder 601 when the device is used for farming in the field, thereby affecting the smoothness of the sliding of the push rod 602.

[0043] Combination Figure 1 and Figure 3 As shown, in some embodiments of the utility model, the building leg bracket 1 includes two plates 101 arranged opposite to each other, and a plurality of connecting support components 102 are connected between the two plates 101. The connecting support components 102 include a supporting tube 1021, and the supporting tube 1021 is arranged between the two plates 101. A first connecting rod 1022 is passed through the supporting tube 1021. Both ends of the first connecting rod 1022 are connected to the plates 101 through nuts, respectively. The structural strength of the building leg bracket 1 is enhanced by the connecting support components 102.

[0044] One end of the two plates 101 is rotatably mounted on the tilling part 201 of the micro-tiller 2, and the other end is hingedly connected to the guide push assembly 6. The push rod 602 of the guide push assembly 6 can push the building leg bracket 1 to rotate around the tilling part 201 of the micro-tiller 2, thereby driving the building leg 3 to rise or fall.

[0045] Combination Figure 1 and Figure 3As shown, in some embodiments of the utility model, a connecting sleeve 11 is fixedly installed on the building leg 3, and a third connecting rod 12 is installed on the building leg bracket 1. The connecting sleeve 11 is slidably mounted on the third connecting rod 12 and is fixed in position by bolts arranged on the side wall. The setting of the connecting sleeve 11 and the third connecting rod 12 facilitates the installation and fixation of the building leg 3.

[0046] Combination Figure 1 and Figure 4 As shown, in some embodiments of the utility model, a buried plate 13 is movably installed at the bottom of the building leg 3, and the buried plate 13 is rotatably installed on the first support shaft 14 provided on the building leg 3 through a sleeve. The front end of the buried plate 13 close to the traveling direction of the micro-tillage machine 2 is connected to a second connecting rod 15. In this embodiment, the second connecting rod 15 is installed on the sleeve, wherein, Figure 1 The arrow indicates the direction of travel of the micro-tillage machine 2. A second support shaft 16 is provided on the building leg 3 and above the first support shaft 14. A second spring 17 is connected between the second support shaft 16 and the second connecting rod 15. The burying plate 13 can be used to completely fill and flatten the ditch after fertilizing or sowing the building leg 3, so that the fertilizer or seeds can be deeply buried in the soil, further ensuring the fertilization or sowing effect of the building leg 3. The surface of the soil treated by the burying plate 13 is flat, and the tillage effect is good. By arranging the second spring 17 between the second support shaft 16 and the second connecting rod 15, the second spring 17 can apply tension to the front end of the burying plate 13 in the travel direction, so that the rear end of the burying plate 13 can move downward and close to the soil surface, which is conducive to the filling and flattening of the ditch.

[0047] Combination Figure 1 and Figure 4 As shown, in some embodiments of the utility model, the buried plate 13 includes a connecting portion 1301 and a buried portion 1302 extending and bent from the connecting portion 1301 to the end of the moving direction of the building leg 3, the connecting portion 1301 is rotatably mounted on the first support shaft 14, and the second connecting rod 15 is mounted on the connecting portion 1301. The buried plate 13 is conveniently mounted on the first support shaft 14 through the connecting portion 1301, and the channel is conveniently buried through the buried portion 1302.

[0048] Combination Figure 4 As shown, in some embodiments of the present invention, the buried portion 1302 and the connecting portion 1301 are an integrated structure, which is easy to process.

[0049] For ease of understanding, the working process of this embodiment is given below:

[0050] like Figure 1-Figure 4As shown, when in use, the operating handle 8 is pushed, and the operating handle 8 pushes the push rod 602 in the guide push assembly 6 to move downward through the push-pull wire 7. During the movement of the push rod 602, the building leg bracket 1 is pushed to rotate downward around the tillage part 201 of the micro-tillage machine 2. Since the building leg 3 is installed on the building leg bracket 1, the building leg 3 is driven to move downward and inserted into the soil. At this time, the fertilizer or seeds in the fertilizer hopper 18 enters the telescopic hose 4 through the fertilizer applicator 5, and are transported to the building leg 3 through the telescopic hose 4, and are transported to the soil by the building leg 3. Afterwards, during the movement of the micro-tillage machine 2, the burying plate 13 at the bottom of the building leg 3 buries the groove left after the movement of the building leg 3, so that the fertilizer or seeds can be deeply buried in the soil, which is convenient to use;

[0051] When tillage is completed, the operating handle 8 is pushed in the reverse direction, and the operating handle 8 pushes the push rod 602 upward through the push-pull wire 7, thereby driving the building leg bracket 1 to rotate upward around the tillage part 201 of the micro-tillage machine 2, so that the building leg 3 is separated from the soil, making it easier for the micro-tillage machine 2 to move.

[0052] In summary, the utility model controls the lifting of the building legs so that the building legs can be inserted into the soil for fertilizing or sowing, which is easy to operate and has good fertilizing or sowing effects.

[0053] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A fertilizer applicator leg lifting device, characterized in that: It comprises a building leg bracket, the building leg bracket is movably mounted on the micro-tillage machine, at least one side of the building leg bracket is mounted with a building leg, the building leg is connected with a telescopic hose, one end of the telescopic hose away from the building leg is connected with a fertilizer applicator, and the fertilizer applicator is mounted on the top of the micro-tillage machine; The building leg bracket is connected to a guide pushing component for pushing the building leg to lift and lower. The guide pushing component is installed on the micro-tiller. The end of the guide pushing component away from the building leg bracket is connected to a push-pull wire, and the end of the push-pull wire away from the guide pushing component is connected to an operating handle.

2. The fertilizer spreader leg lifting device according to claim 1, characterized in that: The guide pushing assembly comprises a guide cylinder, which is installed on the micro-tiller. A push rod is slidably inserted into the guide cylinder. One end of the push rod is hingedly connected to the building leg bracket, and the other end is hingedly connected to the push-pull wire.

3. The fertilizer spreader leg lifting device according to claim 2, characterized in that: The guide cylinder is also provided with a limiting mechanism for limiting the movement stroke of the push rod.

4. The fertilizer spreader leg lifting device according to claim 3, characterized in that: The limiting mechanism comprises a limiting cylinder, the limiting cylinder is mounted on the guide cylinder and communicated with the guide cylinder, a limiting bead is movably mounted in the limiting cylinder, an upper limiting groove and a lower limiting groove are arranged on the push rod and located in the guide cylinder, and the limiting bead is clamped with the upper limiting groove and the lower limiting groove; A first spring is also installed in the limiting cylinder. One end of the first spring abuts against the limiting bead, and the other end abuts against the adjusting screw. The adjusting screw is threadably installed on the limiting cylinder.

5. The fertilizer spreader leg lifting device according to claim 2, characterized in that: The two ends of the guide cylinder along the axial direction are respectively provided with sealing grooves, and sealing rings are respectively installed in the sealing grooves, and the sealing rings are sleeved on the push rod.

6. The fertilizer spreader leg lifting device according to claim 1, characterized in that: The building leg bracket includes two plates arranged opposite to each other, a plurality of connecting support components are connected between the two plates, and the connecting support components include a supporting tube, the supporting tube is arranged between the two plates, a first connecting rod is passed through the supporting tube, and both ends of the first connecting rod are respectively connected to the plates; One end of the two plate bodies is rotatably mounted on the tilling part of the micro-tillage machine, and the other end is hingedly connected to the guide pushing assembly.

7. The fertilizer spreader leg lifting device according to claim 1, characterized in that: A connecting sleeve is installed on the building leg, a third connecting rod is installed on the building leg bracket, the connecting sleeve is slidably sleeved on the third connecting rod, and the position is fixed by bolts arranged on the side wall.

8. The fertilizer spreader leg lifting device according to any one of claims 1 to 7, characterized in that: A buried plate is also movably installed at the bottom of the building leg, and the buried plate is rotatably installed on the first support shaft arranged on the building leg. The front end of the buried plate close to the travel direction of the micro-tiller is connected with a second connecting rod. A second support shaft is provided on the building leg and above the first support shaft, and a second spring is connected between the second support shaft and the second connecting rod.

9. The fertilizer spreader leg lifting device according to claim 8, characterized in that: The buried plate includes a connecting portion and a buried portion extending and bent from the connecting portion to the end of the leg in the direction of travel. The connecting portion is rotatably mounted on the first supporting shaft, and the second connecting rod is mounted on the connecting portion.

10. The fertilizer spreader leg lifting device according to claim 9, characterized in that: The buried portion and the connecting portion are an integrated structure.

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