Three-point suspension type automatic loading salt spreader

Abstract

The utility model discloses a three-point suspension type automatic loading salt spreader, and belongs to the field of engineering machinery. The three-point suspension type automatic loading salt spreader comprises a hopper assembly, a salt spreading executing mechanism, a suspension assembly and an overturning hydraulic cylinder, the suspension assembly is hinged to one side of the hopper assembly, one end of the overturning hydraulic cylinder is hinged to the hopper assembly, and the other end of the overturning hydraulic cylinder is hinged to the suspension assembly. The overturning hydraulic cylinder stretches and retracts to drive the hopper assembly to be overturned and switched between the working state and the charging state. According to the suspension type automatic loading salt spreader, the salt spreader can be installed through the suspension assembly, overturning switching of the hopper assembly between the working state and the loading state is achieved through the overturning hydraulic cylinder, a feeding port of the hopper assembly can be overturned to a low position in the loading state, a loader or manpower does not need to be matched for loading, and the loading efficiency is improved. Single-person operation is achieved, and a large amount of manpower and material resources are saved. In addition, free lifting of the salt spreader can be achieved, and the salt spreader can adapt to more complex road conditions.

Description

Technical Field

[0001] The utility model relates to a salt spreader, and more particularly to a three-point suspended automatic loading salt spreader. Background Art

[0002] In recent years, with the increase in extreme weather, winter snowfall has increased not only in northern China but also in areas south of the Yangtze River. To ensure safe and smooth traffic on urban roads and highways, snow removal is necessary after a snowfall. Spreading snow-melting salt on the road surface is a common and effective method for rapidly melting snow.

[0003] A salt spreader is a mechanical device designed to replace manual spreading of deicing salt. It works by generating centrifugal force through the rotation of a spreading disc, evenly distributing the salt onto the road surface. Typically mounted on the rear of a truck or inside a pickup truck, it is either vehicle-mounted or vehicle-mounted. This type of salt spreader is suitable for smooth highways, urban roads, and flat, accessible terrain. However, it has poor obstacle-crossing capabilities on complex road surfaces and requires a loader or manual loading, limiting its scope of use. Summary of the Invention

[0004] 1. Technical problems to be solved by the utility model

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of existing salt spreaders and to provide a three-point suspension type automatic loading salt spreader. By adopting the technical solution of the present invention, the salt spreader can be installed by using a suspension assembly, and the hopper assembly can be flipped and switched between the working state and the loading state by flipping the hydraulic cylinder, so that the feed port of the hopper assembly can be flipped to a lower position in the loading state, eliminating the need for a matching loader or manpower for loading, thus achieving single-person operation and saving a lot of manpower and material resources. In addition, the height of the suspension assembly can be adjusted by the hydraulic lifting assembly on the towing vehicle, thereby achieving free lifting and lowering of the salt spreader, making it convenient to cross some road obstacles and adapt to more complex road conditions, filling the gap in the working range of large vehicle-mounted salt spreaders.

[0006] 2. Technical solution

[0007] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0008] The utility model discloses a three-point suspended automatic loading salt spreader, comprising a hopper assembly and a salt spreading actuator arranged on the hopper assembly, and also comprising a suspension assembly and a flip hydraulic cylinder. The suspension assembly is hinged on one side of the hopper assembly, one end of the flip hydraulic cylinder is hinged to the hopper assembly, and the other end is hinged to the suspension assembly. The telescopic movement of the flip hydraulic cylinder can drive the hopper assembly to flip and switch between the working state and the loading state.

[0009] Furthermore, the upper part of one side of the hopper assembly is provided with an upper hinge part of the box body, and the lower part is provided with two lower hinge parts of the box body. The lower part of the hopper assembly is also provided with a hydraulic cylinder hinge part located below the upper hinge part of the box body; the upper part of the suspension assembly is provided with an upper connecting part cooperating with the above-mentioned upper hinge part of the box body, and the lower part of the suspension assembly is provided with a lower connecting part cooperating with the above-mentioned lower hinge part of the box body. The upper connecting part and the upper hinge part of the box body are connected by a detachable hinge structure, and the lower connecting part is hinged to the lower hinge part of the box body on the corresponding side. The upper part of the flip hydraulic cylinder is hinged to the upper part of the suspension assembly, and the lower part is hinged to the hydraulic cylinder hinge part; when the hopper assembly is in a working state, the upper connecting part is connected to the upper hinge part of the box body, and when the hopper assembly is in a loading state, the upper connecting part and the upper hinge part of the box body are separated.

[0010] Furthermore, the suspension assembly is further provided with an upper suspension point and a lower suspension point for suspension installation, and the lower suspension point is provided on each side of the suspension assembly to form a three-point suspension structure.

[0011] Furthermore, the salt spreading actuator includes an auger assembly, a stirring assembly, a transmission assembly, a scattering assembly and a hydraulic power assembly, the auger assembly is arranged at the inner bottom of the hopper assembly, the scattering assembly is arranged at the bottom of the hopper assembly and corresponds to the discharge port of the auger assembly, the stirring assembly is arranged on the inner side of the hopper assembly, the transmission assembly is arranged on one side of the hopper assembly, and is respectively connected to the auger assembly and the stirring assembly; the hydraulic power assembly includes a first hydraulic motor and a second hydraulic motor, the first hydraulic motor is connected to the transmission assembly for driving the auger assembly and the stirring assembly to rotate through the transmission assembly, and the second hydraulic motor is connected to the scattering assembly for driving the scattering disk of the scattering assembly to rotate.

[0012] Furthermore, the transmission assembly is embedded in a side wall of the hopper assembly.

[0013] Furthermore, the hydraulic power assembly further comprises a hydraulic valve group mounted on the hopper assembly, and the hopper assembly is provided with a protective cover for covering the hydraulic valve group.

[0014] Furthermore, a plurality of material level warning devices are provided in the hopper assembly.

[0015] Furthermore, the suspension assembly is mounted on a hydraulic lifting assembly of a tractor vehicle, and the height of the hopper assembly is raised or lowered by adjusting a hydraulic cylinder of the hydraulic lifting assembly.

[0016] Furthermore, the traction vehicle is a tractor.

[0017] 3. Beneficial effects

[0018] Compared with the existing known technologies, the technical solution provided by the present invention has the following beneficial effects:

[0019] (1) The utility model is a three-point suspended automatic loading salt spreader, which includes a hopper assembly and a salt spreading actuator arranged on the hopper assembly, and also includes a suspension assembly and a flip hydraulic cylinder. The suspension assembly is hinged on one side of the hopper assembly, one end of the flip hydraulic cylinder is hinged to the hopper assembly, and the other end is hinged to the suspension assembly. The telescopic movement of the flip hydraulic cylinder can drive the hopper assembly to flip and switch between the working state and the loading state; the suspended automatic loading salt spreader can use the suspension assembly to realize the installation of the salt spreader, and realize the flipping and switching of the hopper assembly between the working state and the loading state through the flip hydraulic cylinder, so that the feed port of the hopper assembly can be flipped to a lower position in the loading state, for example, the feed port is adjusted to a state perpendicular to the horizontal plane and the salt is directly reversed to load, without the need for a matching loader or manpower for loading, thus realizing single-person operation and saving a lot of manpower and material resources;

[0020] (2) The utility model is a three-point suspension type automatic loading salt spreader, wherein the upper part of one side of the hopper assembly is provided with an upper hinge part of the box body, and the lower part is provided with two lower hinge parts of the box body. The lower part of the hopper assembly is also provided with a hydraulic cylinder hinge part located below the upper hinge part of the box body; the upper part of the suspension assembly is provided with an upper connecting part that cooperates with the above-mentioned upper hinge part of the box body, and the lower part of the suspension assembly is provided with a lower connecting part that cooperates with the above-mentioned lower hinge part of the box body. The upper connecting part and the upper hinge part of the box body are connected by a detachable hinge structure, and the lower connecting part is hinged to the lower hinge part of the box body on the corresponding side; the above-mentioned hinged installation structure is adopted, the structure is simple and compact, and when the hopper assembly is in the working state, the hopper assembly and the suspension assembly can be fixed up and down, thereby improving the working stability and reliability of the salt spreader;

[0021] (3) The utility model is a three-point suspended automatic loading salt spreader, whose salt spreading actuator includes an auger assembly, a stirring assembly, a transmission assembly, a spreading assembly and a hydraulic power assembly. The hydraulic power assembly includes a first hydraulic motor and a second hydraulic motor. The first hydraulic motor is connected to the transmission assembly for driving the auger assembly and the stirring assembly to rotate through the transmission assembly. The second hydraulic motor is connected to the spreading assembly for driving the spreading disk of the spreading assembly to rotate. The entire salt spreading actuator adopts hydraulic drive, which has stable and reliable operation, few mechanical failures and long service life. The auger assembly and the stirring assembly work in conjunction to ensure the uniformity of the spreading of snow-melting salt.

[0022] (4) The utility model is a three-point suspension type automatic loading salt spreader, whose transmission assembly is embedded in one side wall of the hopper assembly, which can protect the transmission system from external impact to the greatest extent, and can also avoid rain, snow and road mud, greatly extending the service life of the transmission system and improving transmission stability;

[0023] (5) The utility model is a three-point suspension type automatic loading salt spreader, whose hydraulic power assembly also includes a hydraulic valve group installed on the hopper assembly. The hopper assembly is provided with a shield for covering the hydraulic valve group, which plays a protective role on the hydraulic components and ensures the stable operation of the hydraulic system;

[0024] (6) The utility model is a three-point suspended automatic loading salt spreader, and its hopper assembly is also equipped with a number of material level warning devices. When the industrial salt in the hopper is lower than the set height, the material level warning device will be triggered to remind you to add salt in time, making the snow melting operation easier;

[0025] (7) The utility model is a three-point suspended automatic loading salt spreader, whose suspension assembly is installed on the hydraulic lifting assembly of the traction vehicle. The height of the hopper assembly is raised or lowered by adjusting the hydraulic cylinder of the hydraulic lifting assembly, thereby enabling the salt spreader to be freely raised and lowered, making it convenient to cross some road obstacles and adapt to more complex road conditions, thus filling the gap in the working range of large vehicle-mounted salt spreaders. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the explosion structure of a three-point suspension automatic loading salt spreader of the utility model;

[0027] Figure 2 This is a schematic diagram of a three-point suspension automatic loading salt spreader according to the present invention in an assembled state from a front side perspective;

[0028] Figure 3 This is a schematic diagram of a three-point suspension automatic loading salt spreader according to the present invention in an assembled state from a rear side perspective;

[0029] Figure 4 This is a front elevation view of a three-point suspended automatic loading salt spreader according to the present invention;

[0030] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure in the AA direction;

[0031] Figure 6 This is a schematic diagram of the top view of a three-point suspension automatic loading salt spreader of the present invention;

[0032] Figure 7 This is a schematic diagram of the working state of the three-point suspension automatic loading salt spreader of the utility model (hopper lowered state);

[0033] Figure 8 This is a schematic diagram of the working state of the three-point suspension automatic loading salt spreader of the utility model (hopper lifting state);

[0034] Figure 9 This is a schematic diagram of the loading state of the three-point suspended automatic loading salt spreader of the present invention.

[0035] Explanation of the numbers in the schematic diagram:

[0036] 1. Hopper assembly; 1-1. Upper hinged part of the box; 1-2. Lower hinged part of the box; 1-3. Hydraulic cylinder hinged part; 2. Auger assembly; 3. Agitation assembly; 4. Transmission assembly; 5. Spreading assembly; 6. Hydraulic power assembly; 6-1. First hydraulic motor; 6-2. Second hydraulic motor; 7. Suspension assembly; 7-1. Upper connecting part; 7-2. Lower connecting part; 7-3. Upper suspension point; 7-4. Lower suspension point; 8. Flip hydraulic cylinder; 9. Protective cover; 10. Material level warning device; 11. Tractor; 12. Hydraulic lifting assembly. DETAILED DESCRIPTION

[0037] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0038] [Example]

[0039] Combine Figures 1 to 5 As shown, a three-point suspended automatic loading salt spreader of this embodiment includes a hopper assembly 1, a salt spreading actuator provided on the hopper assembly 1, a suspension assembly 7, and a tilting hydraulic cylinder 8. The hopper assembly 1 is used to hold deicing salt (industrial salt), and the salt spreading actuator is used to throw out the deicing salt in the hopper assembly 1. The suspension assembly 7 is hinged to one side of the hopper assembly 1 so that the hopper assembly 1 can tilt relative to the suspension assembly 7 around the hinge axis. One end of the tilting hydraulic cylinder 8 is hinged to the hopper assembly 1, and the other end is hinged to the suspension assembly 7. The telescopic movement of the tilting hydraulic cylinder 8 can drive the hopper assembly 1 to flip and switch between the working state and the loading state. In the working state, the hopper assembly 1 is in a vertical state. In the loading state, the hopper assembly 1 is flipped to a horizontal state, so that the feed port of the hopper assembly 1 is lowered, which facilitates loading. The three-point suspended automatic loading salt spreader can utilize the suspension component 7 to realize the installation of the salt spreader, and realize the flipping and switching of the hopper component 1 between the working state and the loading state by flipping the hydraulic cylinder 8, so that the feed port of the hopper component 1 can be flipped to a lower position in the loading state. For example, the feed port is adjusted to a vertical state with the horizontal plane and the salt can be directly reversed to load. There is no need for a matching loader or manpower for loading, which realizes single-person operation and saves a lot of manpower and material resources.

[0040] Reference Figure 1 、 Figure 2 and Figure 5As shown, in this embodiment, the upper part of one side of the hopper assembly 1 is provided with an upper box hinge part 1-1, and the lower part is provided with two lower box hinge parts 1-2. The lower part of the hopper assembly 1 is also provided with a hydraulic cylinder hinge part 1-3 located below the upper box hinge part 1-1; the upper part of the suspension assembly 7 is provided with an upper connecting part 7-1 that cooperates with the above-mentioned upper box hinge part 1-1, and the lower part of the suspension assembly 7 is provided with a lower connecting part 7-2 that cooperates with the above-mentioned lower box hinge part 1-2. The upper connecting part 7-1 and the upper box hinge part 1-1 are connected by a detachable hinge structure, and the lower connecting part 7-2 is hinged to the lower box hinge part 1-2 on the corresponding side. The upper part of the flip hydraulic cylinder 8 is hinged to the upper part of the suspension assembly 7, and the lower part is hinged to the hydraulic cylinder hinge part 1-3. When the hopper assembly 1 is in the working state, the upper connecting part 7-1 is connected to the upper hinge part 1-1 of the box body. When the hopper assembly 1 is in the loading state, the upper connecting part 7-1 is separated from the upper hinge part 1-1 of the box body. In this way, in the working state, the upper connecting part 7-1 is connected to the upper hinge part 1-1 of the box body. At this time, the hopper assembly 1 and the suspension assembly 7 are relatively fixed. At this time, there is no need to use the flip hydraulic cylinder 8 to maintain the vertical state of the hopper assembly 1, which reduces the self-locking requirements of the flip hydraulic cylinder 8 and improves the working stability and reliability of the salt spreader. When loading is required, it is only necessary to separate the upper connecting part 7-1 from the upper hinge part 1-1 of the box body, and use the flip hydraulic cylinder 8 to flip the feed port of the hopper assembly 1 downward. In order to facilitate disassembly, the upper connecting part 7-1 and the upper hinge part 1-1 of the box body can be connected with a pin. Refer to Figure 5 As shown, when the hopper assembly 1 is in the working state, the tilting hydraulic cylinder 8 is in the extended state; when the hopper assembly 1 is in the loading state, the tilting hydraulic cylinder 8 is in the retracted state. In order to prevent the hopper assembly 1 from colliding with the suspension assembly 7 during the flipping and switching process, a buffer block is also provided on the upper part of the suspension assembly 7 to reduce the noise generated by the collision between the hopper assembly 1 and the suspension assembly 7. Figure 1 As shown, in this embodiment, the suspension component 7 is also provided with an upper suspension point 7-3 and a lower suspension point 7-4 for suspension installation. The lower suspension point 7-4 is provided on each side of the suspension component 7, forming a three-point suspension structure. The three-point suspension structure can be matched with the existing standard three-point suspension system to facilitate the suspension installation of the salt spreader.

[0041] catch Figure 1 and Figure 5As shown, in this embodiment, the above-mentioned salt spreading actuator includes an auger assembly 2, a stirring assembly 3, a transmission assembly 4, a scattering assembly 5 and a hydraulic power assembly 6. The auger assembly 2 is arranged at the inner bottom of the hopper assembly 1, and is used for conveying snow-melting salt. The scattering assembly 5 is arranged at the bottom of the hopper assembly 1 and corresponds to the discharge port of the auger assembly 2, and is used to scatter the snow-melting salt conveyed by the auger assembly 2 onto the road surface; the stirring assembly 3 is arranged on the inner side of the hopper assembly 1 to promote the snow-melting salt in the hopper to be in an active state, to avoid the salt sticking together, so that the salt delivery amount of the auger assembly 2 is continuous and stable, and the salt spreading uniformity of the scattering assembly 5 is improved; the transmission assembly 4 is arranged on one side of the hopper assembly 1, and is respectively connected to the auger assembly 2 and the stirring assembly 3 for driving the auger assembly 2 and the stirring assembly 3 to work together. The hydraulic power assembly 6 includes a first hydraulic motor 6-1 and a second hydraulic motor 6-2. The first hydraulic motor 6-1 is in transmission connection with the transmission assembly 4, driving the auger assembly 2 and the stirring assembly 3 through the transmission assembly 4. The second hydraulic motor 6-2 is in transmission connection with the spreading assembly 5, driving the spreading disc of the spreading assembly 5. In this embodiment, the spreading assembly 5 can be located at the bottom center of the hopper assembly 1. In this case, the auger assembly 2 can be a dual-rotation auger, i.e., one with two spiral conveying blades rotating in opposite directions, to convey the industrial salt from both sides of the hopper assembly 1 toward the center. The stirring assembly 3 is located above the auger assembly 2 and is equipped with several stirring blades to prevent the industrial salt in the hopper from squeezing and sticking together, causing blockage. The entire salt spreading actuator is hydraulically driven, ensuring stable and reliable operation, few mechanical failures, and a long service life. The auger assembly 2 and the stirring assembly 3 work in conjunction, ensuring uniform distribution of the de-icing salt.

[0042] like Figure 3 As shown, in this embodiment, the transmission assembly 4 is embedded in one side wall of the hopper assembly 1. The transmission assembly 4 is enclosed inside by a baffle, which can protect the transmission system from external impact to the greatest extent, and also avoid rain, snow and road mud, greatly improving the service life of the transmission system and improving transmission stability. The transmission assembly 4 preferably adopts a chain transmission mechanism, which has better transmission stability and higher transmission efficiency. Figure 1 and Figure 2 As shown, the hydraulic power assembly 6 also includes a hydraulic valve group installed on the hopper assembly 1. The hydraulic valve group can be a diverter valve block, a reversing valve, etc. in the hydraulic system. A protective cover 9 for covering the hydraulic valve group is also provided on the hopper assembly 1 to protect the hydraulic components and ensure the stable operation of the hydraulic system. In addition, referring to Figure 6 As shown, several material level warning devices 10 are also provided within the hopper assembly 1. These can be switches or other components. When the industrial salt in the hopper falls below a set level, the warning devices are triggered, prompting timely salt refilling, thus easing snow melting operations. Multiple material level warning devices 10 can be installed at the same height to ensure accurate material level monitoring.

[0043] Reference Figures 7 to 9 As shown, the present embodiment is a three-point suspension type automatic loading salt spreader, whose suspension assembly 7 is installed on the hydraulic lifting assembly 12 of the towing vehicle. The height of the hopper assembly 1 is raised or lowered by adjusting the hydraulic cylinder of the hydraulic lifting assembly 12, thereby enabling the free lifting and lowering of the salt spreader, making it convenient to cross some road obstacles and adapt to more complex road conditions, filling the gap in the working range of large vehicle-mounted salt spreaders. When the flip hydraulic cylinder 8 drives the hopper assembly 1 to flip to the loading state, it can also cooperate with the hydraulic lifting assembly 12 to control the height of the feed port of the hopper assembly 1 to further facilitate the loading operation. The above-mentioned hydraulic lifting assembly 12 can adopt the existing four-bar structure, and the adjusting hydraulic cylinder is arranged between the four-bar assembly and the towing vehicle. The state of the four-bar assembly is changed by adjusting the telescopic control of the hydraulic cylinder, thereby achieving lifting control. Figure 7 The hopper assembly 1 is shown in the lowest position. Figure 8 The hopper assembly 1 is shown in the state of being in the highest position. When encountering obstacles, the hopper assembly 1 can be lifted to Figure 8 The state shown is convenient for overcoming obstacles; at the same time, during the salt spreading process, the height of the hopper assembly 1 can be adjusted, thereby changing the salt spreading height of the spreading assembly 5, which is conducive to adjusting the salt spreading state according to road conditions, ensuring uniform salt spreading, and reducing waste of snow-melting salt. Figure 9 The hopper assembly 1 is shown flipped to a horizontal position for loading. At this point, the lower edge of the feed opening of the hopper assembly 1 is very low, allowing the vehicle to directly reverse and push salt into the hopper. This low position of the feed opening also facilitates salt loading, eliminating the need for a loader. This makes loading easier and more labor-saving. Furthermore, this embodiment also provides a large vehicle-mounted salt spreader. The tractor 11 can be used as the tractor's built-in hydraulic system to drive the salt spreader, facilitating control of the salt spreader.

[0044] The utility model discloses a three-point suspension type automatic loading salt spreader. The salt spreader can be installed by using the suspension assembly. The hopper assembly can be flipped between the working state and the loading state by turning the hydraulic cylinder. The feed port of the hopper assembly can be flipped to a lower position in the loading state. No supporting loader or manpower is required for loading, which enables single-person operation and saves a lot of manpower and material resources. In addition, the height of the suspension assembly can be adjusted by the hydraulic lifting assembly on the towing vehicle, thereby achieving free lifting and lowering of the salt spreader, making it easier to overcome some road obstacles and adapt to more complex road conditions. This fills the gap in the working range of large vehicle-mounted salt spreaders.

[0045] The above schematically describes the present invention and its embodiments, which is not intended to be limiting. The accompanying drawings illustrate only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the spirit of the present invention, uninventively designs structures and embodiments similar to this technical solution, they shall fall within the scope of protection of the present invention.

Claims

1. A three-point suspended automatic loading salt spreader, comprising a hopper assembly (1) and a salt spreading actuator arranged on the hopper assembly (1), characterized in that: The utility model further comprises a suspension assembly (7) and a tilting hydraulic cylinder (8), wherein the suspension assembly (7) is hinged on one side of the hopper assembly (1), one end of the tilting hydraulic cylinder (8) is hinged on the hopper assembly (1), and the other end is hinged on the suspension assembly (7), and the telescopic movement of the tilting hydraulic cylinder (8) can drive the hopper assembly (1) to tilt and switch between the working state and the loading state.

2. The three-point suspended automatic loading salt spreader according to claim 1, characterized in that: The hopper assembly (1) is provided with a box upper hinge part (1-1) on the upper part of one side and two box lower hinge parts (1-2) on the lower part. The lower part of the hopper assembly (1) is also provided with a hydraulic cylinder hinge part (1-3) located below the box upper hinge part (1-1). The upper part of the suspension assembly (7) is provided with an upper connecting part (7-1) that matches the box upper hinge part (1-1). The lower part of the suspension assembly (7) is provided with a lower connecting part (7-2) that matches the box lower hinge part (1-2). The upper connecting part (7-1) is connected to the box. The upper hinged parts (1-1) are connected by a detachable hinged structure, the lower connecting part (7-2) is hinged to the lower hinged part (1-2) of the box body on the corresponding side, the upper part of the tilting hydraulic cylinder (8) is hinged to the upper part of the suspension assembly (7), and the lower part is hinged to the hydraulic cylinder hinged part (1-3); when the hopper assembly (1) is in a working state, the upper connecting part (7-1) is connected to the upper hinged part (1-1) of the box body, and when the hopper assembly (1) is in a loading state, the upper connecting part (7-1) is detached from the upper hinged part (1-1) of the box body.

3. The three-point suspended automatic loading salt spreader according to claim 2, characterized in that: The suspension assembly (7) is also provided with an upper suspension point (7-3) and a lower suspension point (7-4) for suspension installation. The lower suspension point (7-4) is provided on each side of the suspension assembly (7), forming a three-point suspension structure.

4. The three-point suspended automatic loading salt spreader according to claim 1, 2 or 3, characterized in that: The salt spreading actuator comprises an auger assembly (2), a stirring assembly (3), a transmission assembly (4), a scattering assembly (5) and a hydraulic power assembly (6), wherein the auger assembly (2) is arranged at the inner bottom of the hopper assembly (1), the scattering assembly (5) is arranged at the bottom of the hopper assembly (1) and corresponds to the discharge port of the auger assembly (2), the stirring assembly (3) is arranged at the inner side of the hopper assembly (1), the transmission assembly (4) is arranged at one side of the hopper assembly (1) and is respectively connected to the auger assembly (2) and the stirring assembly (3); the hydraulic power assembly (6) comprises a first hydraulic motor (6-1) and a second hydraulic motor (6-2), wherein the first hydraulic motor (6-1) is connected to the transmission assembly (4) for driving the auger assembly (2) and the stirring assembly (3) to rotate through the transmission assembly (4), and the second hydraulic motor (6-2) is connected to the scattering assembly (5) for driving the scattering disc of the scattering assembly (5) to rotate.

5. The three-point suspended automatic loading salt spreader according to claim 4, characterized in that: The transmission assembly (4) is embedded in a side wall of the hopper assembly (1).

6. The three-point suspension automatic loading salt spreader according to claim 4, characterized in that: The hydraulic power assembly (6) further comprises a hydraulic valve group mounted on the hopper assembly (1), and the hopper assembly (1) is provided with a protective cover (9) for covering the hydraulic valve group.

7. The three-point suspended automatic loading salt spreader according to claim 4, characterized in that: Several material level warning devices (10) are also provided in the hopper assembly (1).

8. The three-point suspended automatic loading salt spreader according to claim 1, 2 or 3, characterized in that: The suspension assembly (7) is mounted on a hydraulic lifting assembly (12) of a traction vehicle, and the height of the hopper assembly (1) is raised or lowered by an adjusting hydraulic cylinder of the hydraulic lifting assembly (12).

9. The three-point suspended automatic loading salt spreader according to claim 8, characterized in that: The traction vehicle is a tractor (11).

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