A kind of saline-alkali soil improvement's improving agent spraying equipment

Abstract

The application relates to the field of modifier spraying technology and discloses a modifier spraying device for saline-alkali soil improvement, which comprises a base and further comprises a first valve plate, a detection wheel and the like. The first valve plate is horizontally arranged above the base, a rectangular groove is formed in the top end of the first valve plate, a second valve plate is slidably arranged in the rectangular groove, the first valve plate and the second valve plate are matched to change the discharging rate of the modifier, and the detection wheel is arranged below the base and used for detecting the moving rate of the base and the soil hardening degree of the saline-alkali soil. The application can automatically adjust the opening degree of the material box discharging port according to the moving speed of the device to realize self-adaptive discharging, can automatically adjust the opening degree of the material box discharging port again according to the soil hardening degree of the saline-alkali soil to spray more modifier to the position of the soil hardening, guarantees the improvement effect of the whole saline-alkali soil, and further improves the use effect of the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of amendment spraying technology, in particular to a salt-alkali soil improvement amendment spraying equipment. BACKGROUND

[0002] Salt-alkali soil refers to soil containing high concentrations of soluble salts and alkaline substances, usually with high pH value and poor soil structure. The soil aggregate structure in salt-alkali soil is poor, easy to be cemented, poor in air permeability, and poor in water permeability, which limits the absorption of water and nutrients by plants, leading to difficult growth of crops, so salt-alkali soil needs to be improved.

[0003] The current salt-alkali soil improvement amendment spraying equipment can spray the amendment in the salt-alkali soil, but cannot spray the amendment according to the speed of the equipment movement and the characteristics of the soil cementation, resulting in uneven and not detailed spraying of the amendment, reducing the effect of salt-alkali soil improvement, so there is an urgent need to design a salt-alkali soil improvement amendment spraying equipment. SUMMARY

[0004] The present application relates to the field of amendment spraying technology, in particular to a salt-alkali soil improvement amendment spraying equipment.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] A salt-alkali soil improvement amendment spraying equipment, comprising a base, the bottom of the base is vertically installed with an electric telescopic rod at four ends, and the telescopic end of each electric telescopic rod is installed with a walking wheel, further comprising:

[0007] A first valve plate is horizontally arranged above the base, and a rectangular slot is formed at the top end of the first valve plate, a second valve plate is slidably arranged in the rectangular slot, the first valve plate and the second valve plate cooperate to change the rate of amendment discharging, and two third spring rods are fixed at both ends of the rectangular slot, and the telescopic end of the third spring rod is fixedly installed on the end face of the second valve plate;

[0008] A detection wheel is arranged below the base, which is used for detecting the moving speed of the base and the soil cementation degree of the salt-alkali soil, and the first valve plate and the second valve plate are cooperated to make the amendment uniformly sprayed in the salt-alkali soil;

[0009] A first detection assembly is arranged at the bottom of the base, which is cooperated with the first valve plate and the second valve plate to detect the soil cementation degree of the salt-alkali soil;

[0010] Two second detection assemblies are symmetrically arranged at the bottom of the base, which are cooperated with the first valve plate and the second valve plate to change the spraying rate of the amendment.

[0011] As a further technical scheme of the present application, the base top is provided with a material box, the material box top is open, the base bottom is provided with a discharge port, the discharge port and the material box interior are communicated, the first valve plate and the second valve plate are horizontally slidably arranged at the material box interior end, the first valve plate end penetrates the material box, the material box side ends are horizontally fixed with first spring rods, the first spring rod telescopic ends are fixedly installed on the first valve plate side end, the first valve plate and the second valve plate are used for controlling the discharge opening of the material box discharge end, so that the material box can adjust the discharge rate according to the base moving speed and the saline soil hardening degree.

[0012] As a further technical scheme of the present application, the base bottom is vertically fixedly provided with two symmetrically arranged fixed plates, each fixed plate bottom is fixed with two symmetrically arranged second spring rods, the corresponding two second spring rod telescopic ends are fixedly provided with mounting blocks, the detection wheel is rotatably installed between the mounting blocks, and is used for detecting the detection wheel, so that the detection wheel can stably contact the saline soil.

[0013] As a further technical scheme of the present application, the second detection assembly comprises: a rotating rod, the rotating rod is rotatably installed on the corresponding fixed plate side, and a first pulley is fixedly sleeved on the rotating rod, a second pulley is rotatably installed on the corresponding mounting block, the second pulley end face is fixedly installed on the detection wheel end face center through a connecting shaft, a third pulley is arranged below the base, and the first pulley, the second pulley and the third pulley surface are sleeved with a belt, which is used for driving the rotating rod to rotate through the belt and the three pulleys.

[0014] As a further technical scheme of the present application, the third pulley end face center is rotatably installed with a limiting block, and the fixed plate side is horizontally fixedly installed with a limiting column, the limiting block is slidably sleeved on the limiting column surface, the mounting block side is rotatably installed with a third movable rod, and the third movable rod other end is rotatably installed on the limiting block, which is used for limiting the third pulley, so that the detection wheel moves, the third pulley can stably move, so that the belt is always in a state of tension.

[0015] As a further technical scheme of the present application, the rotating rod surface is movably sleeved with a sleeve disc, and the rotating rod surface is also fixedly sleeved with a fixed disc, four first connecting rods are rotatably installed on the fixed disc end face close to the sleeve disc, each first connecting rod end is rotatably installed with a counterweight, the counterweight side is also rotatably installed with a second connecting rod, the sleeve disc side close to the fixed disc is provided with an annular groove, four sliding blocks are slidably installed in the annular groove, the four second connecting rod ends are rotatably installed on the four sliding block end faces, which is used for connecting the fixed disc and the sleeve disc, and making the rotating rod rotate to drive the fixed disc to rotate, while the sleeve disc does not rotate with the rotating rod.

[0016] As a further technical scheme of the present application, the top of the base is vertically provided with a sliding plate, the end of the sliding plate penetrates through the base, the top end of the side of the sliding plate is rotatably provided with a second movable rod, the other end of the second movable rod is rotatably provided on the top end of the side of the first valve plate, the end of the side of the sliding plate is rotatably provided with a fourth movable rod, the other end of the fourth movable rod is rotatably provided on the side of the sleeve disc, the sleeve disc is moved by the centrifugal force generated by the rotation of the counterweight, the first valve plate is moved by the movement of the sleeve disc, and the opening of the discharge outlet of the material box is controlled according to the moving speed detected by the detection wheel.

[0017] As a further technical scheme of the present application, the first detection assembly comprises: a first sliding column, the first sliding column is vertically arranged above the base, the end of the first sliding column penetrates through the base, the first sliding column and the inner wall of the base are connected through spline sliding, the stability of the vertical sliding of the first sliding column is ensured, the end of the first sliding column is fixedly provided with an arc-shaped plate, the contact between the arc-shaped plate and the detection wheel does not affect the rolling of the detection wheel, and the compaction degree of the saline-alkali soil is detected.

[0018] As a further technical scheme of the present application, the surface of the first sliding column is fixedly sleeved with a disc, the disc is located below the base, the surface of the first sliding column is sleeved with a straight spring, and the two ends of the straight spring are respectively arranged on the top surface of the disc and the bottom of the base, so that the first sliding column can be reset after moving, and the overall detection of the compaction degree of the saline-alkali soil is realized.

[0019] As a further technical scheme of the present application, the top end of the first sliding column is fixedly provided with a first telescopic rod, the fixed end and the telescopic end of the first telescopic rod are connected through spline sliding, the bottom of the fixed end of the first telescopic rod is vertically fixedly provided with a second telescopic rod, the fixed end and the telescopic end of the second telescopic rod are connected through spline sliding, the fixed end of the second telescopic rod is fixedly provided on the top surface of the first valve plate, the end of the second sliding column penetrates through the first valve plate, the telescopic end surface of the second telescopic rod is rotatably provided with a first movable rod, and the other end of the first movable rod is rotatably provided on the end of the second sliding column, so that the second sliding column can be horizontally moved when the first sliding column moves upward, and the first sliding column does not move when the second sliding column moves horizontally, and the first sliding column controls the second sliding column in one direction.

[0020] The present application has the following advantages:

[0021] The present application, through the arrangement of the first detection assembly and the second detection assembly, can not only automatically adjust the opening of the discharge outlet of the material box according to the moving speed of the equipment, so as to realize self-adaptive discharging, but also can automatically adjust the opening of the discharge outlet of the material box according to the compaction degree of the saline-alkali soil, so as to spray more improver on the position of the soil compaction, thereby ensuring the overall improvement effect of the saline-alkali soil, and improving the use effect of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A structural schematic view of a salt-alkali soil improvement agent spraying device according to the present application;

[0023] Figure 2 A structural schematic view of a salt-alkali soil improvement agent spraying device according to the present application; Figure 1 A zoomed-in view of part A in the above figure;

[0024] Figure 3 A structural schematic view of a salt-alkali soil improvement agent spraying device according to the present application; Figure 1 A zoomed-in view of part B in the above figure;

[0025] Figure 4 A structural schematic view of a salt-alkali soil improvement agent spraying device according to the present application;

[0026] Figure 5 A structural schematic view of a salt-alkali soil improvement agent spraying device according to the present application; Figure 4 A zoomed-in view of part C in the above figure;

[0027] Figure 6 A structural schematic view of a salt-alkali soil improvement agent spraying device according to the present application;

[0028] Figure 7 A structural schematic view of a salt-alkali soil improvement agent spraying device according to the present application;

[0029] Figure 8 A structural schematic view of a salt-alkali soil improvement agent spraying device according to the present application;

[0030] Figure 9 A structural schematic view of a salt-alkali soil improvement agent spraying device according to the present application; Figure 8 A zoomed-in view of part D in the above figure;

[0031] Figure 10 A structural schematic view of a salt-alkali soil improvement agent spraying device according to the present application;

[0032] Figure 11 A structural schematic view of a salt-alkali soil improvement agent spraying device according to the present application;

[0033] In the figure: 1, base; 2, material box; 3, walking wheel; 4, first sliding column; 5, first telescopic rod; 6, second telescopic rod; 7, second sliding column; 8, first movable rod; 9, first valve plate; 10, first spring rod; 11, sliding plate; 12, second movable rod; 13, detection wheel; 14, rotating rod; 15, fixed plate; 16, fixed disc; 17, sleeve disc; 18, counterweight; 19, first connecting rod; 20, second connecting rod; 21, annular groove; 22, second valve plate; 23, third spring rod; 24, mounting block; 25, second spring rod; 26, straight spring; 27, belt; 28, limiting block; 29, limiting column; 30, third movable rod; 31, fourth movable rod. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the following will further describe the present application in combination with specific embodiments.

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0036] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 11 A kind of saline-alkali soil improvement's improving agent sprinkling equipment, including base 1, the bottom of base 1 four ends are vertically installed with electric telescopic rod, and the telescopic end of each electric telescopic rod is installed with walking wheel 3, it further includes: first valve plate 9, detection wheel 13, first detection assembly and second detection assembly, first valve plate 9 is horizontally arranged in the above of base 1, and the top end of first valve plate 9 is provided with the rectangular slot of penetration, the second valve plate 22 of rectangular slot inside is slidably arranged, first valve plate 9 and second valve plate 22 are used for changing the rate of improving agent discharging in cooperation, the telescopic end of third spring rod 23 is fixedly installed to the end face of second valve plate 22, and both ends in rectangular slot are fixed with third spring rod 23, detection wheel 13 is arranged below base 1, detection wheel 13 is used to detect the moving rate of base 1 and the soil hardening degree of saline-alkali soil, and then, in cooperation with first valve plate 9 and second valve plate 22, the improving agent is uniformly sprinkled in saline-alkali soil, first detection assembly is arranged at the bottom of base 1, first detection assembly is used for detecting the soil hardening degree of saline-alkali soil in cooperation with first valve plate 9 and second valve plate 22, second detection assembly is two, two second detection assemblies are symmetrically arranged at the bottom of base 1, and second detection assembly is used for changing the sprinkling rate of improving agent in cooperation with first valve plate 9 and second valve plate 22.

[0037] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 3In a preferred implementation form, the bottom of the base 1 is vertically fixedly provided with two symmetrically arranged fixed plates 15, the bottom of each fixed plate 15 is fixedly provided with two symmetrically arranged second spring rods 25, the telescopic ends of the corresponding two second spring rods 25 are fixedly provided with mounting blocks 24, and the detection wheel 13 is rotationally arranged between the mounting blocks 24, so as to detect the detection wheel 13, thereby ensuring that the detection wheel 13 can stably contact the saline soil.

[0038] Please refer to the accompanying drawings Figure 2 - the accompanying drawings Figure 11 In a preferred implementation form, the bottom of the base 1 is vertically fixedly provided with two symmetrically arranged fixed plates 15, the bottom of each fixed plate 15 is fixedly provided with two symmetrically arranged second spring rods 25, the telescopic ends of the corresponding two second spring rods 25 are fixedly provided with mounting blocks 24, and the detection wheel 13 is rotationally arranged between the mounting blocks 24, so as to detect the detection wheel 13, thereby ensuring that the detection wheel 13 can stably contact the saline soil.

[0039] Please refer to the accompanying drawings Figure 2 - the accompanying drawings Figure 11 In a preferred implementation form, the second detection assembly comprises: a rotating rod 14 rotationally arranged on the side surface of the corresponding fixed plate 15, and a first pulley fixedly sleeved on the rotating rod 14, a second pulley rotationally arranged on the corresponding mounting block 24 is fixedly arranged on the end surface center of the detection wheel 13 through a connecting shaft, a third pulley is arranged below the base 1, and the surfaces of the first pulley, the second pulley and the third pulley are sleeved with a belt 27, so as to drive the rotating rod 14 to rotate through the belt 27 and the three pulleys.

[0040] Please refer to the accompanying drawings Figure 8 - the accompanying drawings Figure 11 In a preferred implementation form, the end surface center of the third pulley is rotationally arranged with a limiting block 28, the side surface of the fixed plate 15 is horizontally fixedly arranged with a limiting column 29, the limiting block 28 is slidingly sleeved on the surface of the limiting column 29, a third movable rod 30 is rotationally arranged on the side surface of the mounting block 24, and the other end of the third movable rod 30 is rotationally arranged on the limiting block 28, so as to limit the third pulley, thereby ensuring that the third pulley can stably move when the detection wheel 13 moves, so that the belt 27 is always in a taut state.

[0041] Please refer to the accompanying drawings Figure 4 - the accompanying drawings Figure 5In a preferred implementation form, the surface of the rotating rod 14 is sleeved with a sleeve disc 17, and the surface of the rotating rod 14 is also fixedly sleeved with a fixed disc 16, the end face of the fixed disc 16 close to the sleeve disc 17 is rotatably installed with four first connecting rods 19 which are annularly and uniformly distributed, and the end of each first connecting rod 19 is rotatably installed with a counterweight 18, and the side of the counterweight 18 is also rotatably installed with a second connecting rod 20, the side of the sleeve disc 17 close to the fixed disc 16 is provided with an annular groove 21, and the inside of the annular groove 21 is slidably installed with four sliding blocks which are annularly and uniformly distributed, and the end of each second connecting rod 20 is rotatably installed on the end face of the sliding block, so as to connect the fixed disc 16 and the sleeve disc 17, and enable the fixed disc 16 to rotate when the rotating rod 14 rotates, and the sleeve disc 17 does not rotate with the rotating rod 14.

[0042] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 5 In a preferred implementation form, the top of the base 1 is vertically provided with a sliding plate 11, and the end of the sliding plate 11 penetrates through the base 1, the top end of the side of the sliding plate 11 is rotatably installed with a second movable rod 12, and the other end of the second movable rod 12 is rotatably installed on the top end of the side of the first valve plate 9, the end of the side of the sliding plate 11 is rotatably installed with a fourth movable rod 31, and the other end of the fourth movable rod 31 is rotatably installed on the side of the sleeve disc 17, so as to drive the sleeve disc 17 to move through the centrifugal force generated when the counterweight 18 rotates, and drive the first valve plate 9 to move through the movement of the sleeve disc 17, so as to control the opening of the discharge port of the material box 2 according to the moving speed detected by the detection wheel 13.

[0043] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 4 In a preferred implementation form, the first detection assembly comprises a first sliding column 4, the first sliding column 4 is vertically arranged above the base 1, and the end of the first sliding column 4 penetrates through the base 1, and the first sliding column 4 and the inner wall of the base 1 are connected through spline sliding, so as to ensure the stability of the vertical sliding of the first sliding column 4, and the end of the first sliding column 4 is fixedly installed with an arc-shaped plate, the contact between the arc-shaped plate and the detection wheel 13 does not affect the rolling of the detection wheel 13, and the first detection assembly is used for detecting the hardening degree of the saline soil.

[0044] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 9 In a preferred implementation form, the surface of the first sliding column 4 is fixedly sleeved with a disc, and the disc is below the base 1, the surface of the first sliding column 4 is sleeved with a straight spring 26, and the two ends of the straight spring 26 are respectively installed on the top surface of the disc and the bottom of the base 1, so as to reset the first sliding column 4 after the first sliding column 4 moves, so as to realize the comprehensive detection of the hardening degree of the saline soil.

[0045] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 11In a preferred embodiment, the first sliding column 4 is horizontally fixedly installed with a first telescopic rod 5, and the fixed end and the telescopic end of the first telescopic rod 5 are connected through spline sliding, the bottom of the fixed end of the first telescopic rod 5 is vertically fixedly installed with a second telescopic rod 6, and the fixed end and the telescopic end of the second telescopic rod 6 are connected through spline sliding, the fixed end of the second telescopic rod 6 is fixedly installed on the top surface of the first valve plate 9, the second valve plate 22 is horizontally fixed with a second sliding column 7, and the end of the second sliding column 7 passes through the first valve plate 9, the telescopic end surface of the second telescopic rod 6 is rotatably installed with a first movable rod 8, and the other end of the first movable rod 8 is rotatably installed on the end of the second sliding column 7, for driving the second sliding column 7 to horizontally move when the first sliding column 4 moves upward, and the second sliding column 7 does not drive the first sliding column 4 to move when the second sliding column 7 horizontally moves, so as to realize one-way control of the second sliding column 7 by the first sliding column 4.

[0046] The base 1 is placed in the saline-alkali soil to be improved, and then the base 1 is installed on the traction machine, before starting to move the base 1, the height of the walking wheel 3 from the soil is controlled through the electric telescopic rod, so that the height of the walking wheel 3 is higher than that of the detection wheel 13, so that the detection wheel 13 is partially pressed into the soil of the saline-alkali soil, and the distance between the detection wheel 13 and the soil is adjusted according to the actual situation;

[0047] When the base 1 is moved by the traction machine, the components on the base 1 will move together, when the detection wheel 13 rolls in the saline-alkali soil, the second pulley and the belt 27 will rotate, it should be noted that the speed of the detection wheel 13 is consistent with the speed of the traction machine, the belt 27 rotates to drive the first pulley to rotate, the first pulley rotates to drive the rotating rod 14 to rotate, the rotating rod 14 rotates to drive the fixed disc 16 to rotate, the fixed disc 16 rotates to drive the first connecting rod 19, the counterweight 18 and the second connecting rod 20 to rotate, due to the centrifugal force when the counterweight 18 rotates, the sleeve disc 17 will move to the direction close to the fixed disc 16, the sleeve disc 17 moves to drive the fourth movable rod 31 to move, the fourth movable rod 31 moves to drive the sliding plate 11 to move downwards, the sliding plate 11 moves downwards to drive the second movable rod 12 to move, the second movable rod 12 moves to drive the first valve plate 9 to move to the direction close to the sliding plate 11, the first valve plate 9 moves to drive the third spring rod 23 and the second sliding plate 11 and other connecting components to move together, the third spring rod 23 moves to drive the second valve plate 22 to move, so that the first valve plate 9 and the second valve plate 22 move together to the direction close to the sliding plate 11, at this time, the modified agent inside the material box 2 can be discharged, when the traction machine is fast, the centrifugal force on the counterweight 18 is greater, the distance of the sleeve disc 17 moving to the fixed disc 16 is greater, and the distance of the first valve plate 9 and the second valve plate 22 moving is greater, so that the opening of the discharge port of the material box 2 is greater, so as to realize that when the base 1 moves fast, the discharge rate of the material box 2 is also fast, and when the base 1 moves slowly, the discharge rate of the material box 2 is slow, therefore, the opening of the discharge port can be automatically adjusted according to the speed of the traction machine to move, so that the modified agent is uniformly sprayed in the saline-alkali soil, and the problem of uneven spraying of the modified agent caused by the moving speed of the base 1 is avoided;

[0048] When the detection wheel 13 rolls in the saline-alkali soil, the detection wheel 13 will press the soil inside the saline-alkali soil, and since the detection wheel 13 is partially pressed into the soil, when the soil is more hardened, the detection wheel 13 will move upwards, the detection wheel 13 will contact the arc-shaped plate and move the first sliding column 4 upwards, it should be noted that when the detection wheel 13 moves the second pulley upwards, through the setting of the third movable rod 30, the mounting block 24 can be moved upwards to drive the third movable rod to move, so that the belt 27 is always in a taut state, thus not affecting the rotation of the rotating rod 14, the first sliding column 4 moves upwards to drive the first telescopic rod 5 to move upwards, the first telescopic rod 5 moves upwards to drive the telescopic end of the second telescopic rod 6 to move upwards, the telescopic end of the second telescopic rod 6 moves upwards to drive the first movable rod 8 to move, the first movable rod 8 moves to drive the second sliding column 7 to move, the second sliding column 7 moves to drive the second valve plate 22 to move in the direction of approaching the first valve plate 9, so that the opening formed by the first valve plate 9 and the second valve plate 22 is larger, and further more, the improved agent can be discharged more at the position of soil hardening, so as to realize the spraying of the improved agent according to the characteristics of the saline-alkali soil, improve the uniformity of the improvement of the saline-alkali soil, and the position of the second valve plate 22 relative to the first valve plate 9 can be improved according to the soil in the saline-alkali soil in real time, thereby improving the use effect of the equipment.

[0049] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A soil amendment sprinkling apparatus for saline soil improvement, comprising a base (1), characterized in that, Also include: The first valve plate (9) is arranged above the base (1), and the top end of the first valve plate (9) is provided with a through rectangular slot, and the second valve plate (22) is slidably arranged in the rectangular slot. The first valve plate (9) and the second valve plate (22) cooperate to change the discharge rate of the modifier; The detection wheel (13) is arranged below the base (1), and the detection wheel (13) is used for detecting the moving speed of the base (1) and the soil hardening degree of the saline-alkali soil; The first detection assembly is arranged at the bottom of the base (1), and the first detection assembly cooperates with the first valve plate (9) and the second valve plate (22) to detect the soil hardening degree of the saline-alkali soil; The second detection assembly is arranged at the bottom of the base (1), and the second detection assembly cooperates with the first valve plate (9) and the second valve plate (22) to change the spraying rate of the modifier; The base (1) is vertically fixedly installed with two symmetrical fixed plates (15) at the bottom, each fixed plate (15) is fixedly installed with two symmetrical second spring rods (25) at the bottom, the extension ends of the corresponding two second spring rods (25) are fixedly installed with mounting blocks (24), the detection wheel (13) is rotatably installed between the mounting blocks (24), and the second detection assembly comprises: a rotating rod (14) rotatably installed on the side surface of the corresponding fixed plate (15), a first pulley fixedly sleeved on the rotating rod (14), a second pulley rotatably installed on the corresponding mounting block (24), a third pulley arranged below the base (1), a belt (27) sleeved on the surfaces of the first pulley, the second pulley and the third pulley, a sleeve disc (17) movably sleeved on the surface of the rotating rod (14), a fixed disc (16) fixedly sleeved on the surface of the rotating rod (14), four first connecting rods (19) evenly distributed in a ring shape and rotatably installed on the end surface of the fixed disc (16) close to the sleeve disc (17), a counterweight (18) rotatably installed at the end of each first connecting rod (19), a second connecting rod (20) rotatably installed on the side surface of the counterweight (18), a ring-shaped groove (21) formed in the side surface of the sleeve disc (17) close to the fixed disc (16), four sliding blocks slidably installed in the ring-shaped groove (21), and the fourth connecting rod (31) rotatably installed at the end surface of the sliding block.

2. The amendment spraying apparatus for improving saline-alkali soil according to claim 1, characterized in that, The bottom seat (1) top installation of material box (2), and material box (2) top is open type, bottom seat (1) bottom is provided with a discharge port, the discharge port and material box (2) inside communication, the first valve plate (9) and second valve plate (22) are both horizontally slidingly arranged in the end of material box (2) inside, and the first valve plate (9) end part penetrates out of material box (2), the material box (2) one side both ends are horizontally fixed with first spring rod (10), and the telescopic end of the two first spring rods (10) is fixedly installed on the side end of the first valve plate (9).

3. The amendment spraying apparatus for improving saline-alkali soil according to claim 2, characterized in that, The third pulley end face center is rotatably installed with a limit block (28), and the side surface of the fixed plate (15) is horizontally fixedly installed with a limit column (29), the limit block (28) is slidably sleeved on the surface of the limit column (29), and the side surface of the mounting block (24) is rotatably installed with a third movable rod (30), and the other end of the third movable rod (30) is rotatably installed on the limit block (28).

4. The amendment spraying apparatus for improving saline-alkali soil according to claim 3, characterized in that, The first detection assembly comprises a first sliding column (4), the first sliding column (4) is vertically arranged above the base (1), and the first sliding column (4) penetrates through the base (1), the first sliding column (4) and the inner wall of the base (1) are connected through spline sliding, and the end of the first sliding column (4) is fixedly installed with an arc plate.

5. The amendment spraying apparatus for improving saline-alkali soil according to claim 4, characterized in that, The surface of the first sliding column (4) is fixedly sleeved with a disc, and the disc is below the base (1), the surface of the first sliding column (4) is sleeved with a straight spring (26), and the two ends of the straight spring (26) are installed on the top surface of the disc and the bottom of the base (1) respectively.

6. The amendment spraying apparatus for improving saline-alkali soil according to claim 5, wherein, The first sliding column (4) top end is fixedly installed with a first telescopic rod (5), the fixed end of the first telescopic rod (5) is vertically fixedly installed with a second telescopic rod (6), the fixed end of the second telescopic rod (6) is fixedly installed on the top surface of the first valve plate (9), the end surface of the second valve plate (22) is fixedly provided with a second sliding column (7), and the end of the second sliding column (7) penetrates through the first valve plate (9), the telescopic end surface of the second telescopic rod (6) is rotatably installed with a first movable rod (8), and the other end of the first movable rod (8) is rotatably installed on the end of the second sliding column (7).

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