Powder and particle material transport semi-trailer with multi-stage buffering function

Abstract

The application discloses a kind of powder particle material transport semitrailer with multistage buffering function, it is related to semi-trailer technical field.The semitrailer body is included, and the semitrailer body is provided with tank body, and tank body is respectively provided with inlet and outlet, and outlet is connected with conveying assembly, and tank body is provided with buffering assembly;Buffering assembly includes grid plate and telescopic bag installed in sequence, and the multistage buffering of powder particle material is realized by grid plate and telescopic bag cooperation, and powder particle material is first dropped on the grid plate composed of fixed plate and multiple communication plate, and communication plate rotates around rotating shaft, and torsional spring is compressed, and material is dispersed and dropped through gap, and first-stage buffering is realized;Then, material is guided to different cabin by multiple baffle, and impact force concentration is avoided, and air flow is carried out by guiding cylinder jet, and second buffering is carried out, and finally powder particle material falls on air bag, and two-stage buffering is realized, to reduce the noise generated by powder particle material.

Description

Technical Field

[0001] This invention relates to the field of semi-trailer technology, specifically a semi-trailer for transporting powder and granular materials with multi-stage buffering function. Background Technology

[0002] Semi-trailers for transporting powder and granular materials are key equipment in modern logistics and engineering construction. Several long-standing technical challenges remain unresolved during loading, unloading, and transportation. First, during loading, the falling powder and granular materials exert tremendous impact force, generating not only loud noise but also causing continuous impact damage to the tank structure, shortening its lifespan, and even posing safety hazards. Second, existing vehicles mostly use simple fixed grilles or conical dispersers for cushioning, which are limited in effectiveness and cannot adapt to different material characteristics and falling conditions. Furthermore, after unloading, the problem of cleaning sticky material residues on the tank walls and interior is extremely challenging. Traditional manual cleaning methods are inefficient, costly, and pose safety hazards. Summary of the Invention

[0003] The purpose of this invention is to provide a semi-trailer for transporting powder and granular materials with multi-stage buffering function, so as to solve the problems mentioned in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a semi-trailer for transporting powder and granular materials with multi-level buffering function, comprising a semi-trailer body, a tank body being provided on the semi-trailer body, an inlet and an outlet being provided on the tank body, a conveying assembly being connected to the outlet, and a buffering assembly being provided inside the tank body; The buffer assembly includes a telescopic bag, which consists of an air bag, multiple sets of sliding frames, and multiple sets of sliding shafts. The sliding frames are slidably mounted on the sliding shafts, which are mounted on the tank body. The air bag has several pleats and is mounted on the multiple sets of sliding frames.

[0005] The air bag is elastic. After passing through the tank through a pipe, the air bag is connected to an air pump. A pressure sensor is installed on the air bag. The air pump is installed on the tank. The pressure sensor connected to the air bag is electrically connected to the control system.

[0006] When the powdered material enters the tank through the feed inlet, it first sits on the grating plate. Simultaneously, the control system starts the air pump to inflate the air bag. As the air pressure inside the air bag increases, the pleats on the air bag unfold and push the sliding frame to one side to expand the buffer area. The pressure sensor on the air bag monitors the internal air pressure in real time. When the air pressure reaches the system's preset threshold, the control system stops the air pump, maintaining a stable pressure inside the air bag. This forms an elastic buffer surface to reduce the noise and impact of the falling powdered material, creating a third buffer for the powdered material. The movement of the sliding frame ensures that the air bag can cover a larger area and adapt to different drop points.

[0007] The air bag is made of a multi-layer composite material, including an inner elastic sealing layer, a middle tear-resistant fiber mesh layer, and an outer wear-resistant coating.

[0008] One end of the air bag is mounted on the tank body, and the other end of the air bag is mounted on a push plate. The push plate is equipped with several ball bearings. The tank body is equipped with a storage cavity, which is used to accommodate the air bag and the push plate when the air bag deflates and contracts.

[0009] The buffer assembly also includes a grating plate, with a partition installed below the grating plate. The partition is located above the telescopic bag. The grating plate consists of a fixed plate and multiple sets of connecting plates. The fixed plate is mounted on the tank body and has multiple rotating grooves. One end of each connecting plate has a rotating shaft. The multiple connecting plates are rotatably mounted in the multiple sets of rotating grooves via the rotating shaft. A torsion spring connects the rotating shaft and the fixed plate.

[0010] A wear-resistant plate and a thin-film pressure sensor are sequentially arranged on the connecting plate. The wear-resistant plate prevents the thin-film pressure sensor from being damaged by long-term friction from powdery materials. Magnetorheological fluid is placed in the rotating groove, and a coil is placed on the inner wall of the rotating groove. The two ends of the coil are electrically connected to the control system. The rotating shaft and the rotating groove are sealed by a sealing ring to ensure that the magnetorheological fluid does not leak and to ensure that the rotating shaft rotates smoothly.

[0011] The bottom of the partition is provided with a guide cylinder, and the guide cylinder is provided with a number of spray nozzles. The spray nozzles are provided with one-way valves. The guide cylinder passes through the tank body through a pipe and is connected to an external air supply system, which is located on the tank body.

[0012] The semi-trailer body and the tank are connected by shock-absorbing pads.

[0013] The conveying component is a blower, and solenoid valves and flow meters are installed in the inlet and outlet. The solenoid valves and flow meters in the inlet and outlet are electrically connected to the control system.

[0014] A sealing structure is provided between the gas bag and the tank body to seal the gap between the gas bag and the tank body, preventing powdery materials from being located below the gas bag.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. Adaptive buffering, suitable for various powder and granular materials. A telescopic bag consisting of an air bag, sliding frame, and sliding shaft enables dynamically adjustable elastic buffering. After the powder or granular material falls into the tank, the control system activates the air pump to inflate the air bag. The pleats of the air bag unfold and push the sliding frame along the sliding shaft, thus actively expanding the buffer area. The expansion range of the air bag can be adjusted according to the actual landing point of the material, ensuring an effective buffer surface is always formed. Simultaneously, precise air pressure control provides consistent elastic support for different batches or types of materials, significantly reducing the impact and noise generated by falling materials, effectively protecting the tank structure, and reducing the material breakage rate.

[0016] 2. The integrated design of self-cleaning and buffering enhances the stability of the buffering effect on powder and granular materials. The buffering and cleaning functions are integrated into the air bag assembly. In cleaning mode, the air pump is controlled to supply or evacuate air to the air bag in an intermittent or high-pressure mode. The inflation and deflation of the air bag causes high-frequency vibration on its surface, which can effectively shake off the attached powder and granular materials. The dust generated during cleaning is discharged from the outlet through the conveying assembly with the airflow, realizing automated cleaning without the need for external manual labor.

[0017] 3. Multi-stage buffering effect to reduce noise generated by powdery materials. The powdery material first falls onto a grid plate composed of a fixed plate and multiple connecting plates. The connecting plates rotate around a pivot, compressing the torsion springs, and the material is dispersed and falls through the gaps, achieving the first stage of buffering. Subsequently, the material is guided to different compartments by multiple partitions to avoid concentrated impact force. Then, it is transported by airflow through a guide tube for a second stage of buffering. Finally, the powdery material falls onto the air bag, achieving a second stage of buffering to reduce the noise generated by the powdery material. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the air bag structure in this invention; Figure 3 This is a schematic diagram of the conveying component in this invention; Figure 4 This is a schematic diagram of the sliding frame structure in this invention; Figure 5 This is a schematic diagram of the connecting plate in this invention; Figure 6 This is a schematic diagram of the coil structure in this invention; Figure 7This is a schematic diagram of the structure of the semi-trailer body in this invention.

[0019] In the diagram: 1. Semi-trailer body; 2. Tank; 201. Inlet; 202. Outlet; 203. Partition; 204. Guide tube; 3. Conveying assembly; 4. Buffer assembly; 41. Grating plate; 411. Fixing plate; 412. Connecting plate; 413. Coil; 42. Telescopic bag; 421. Air bag; 422. Sliding frame; 423. Sliding shaft; 424. Push plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: Figures 1-7 As shown, this invention provides a technical solution for a semi-trailer for transporting powdery materials with multi-stage buffering function. It includes a semi-trailer body 1, a tank 2 mounted on the semi-trailer body 1, and a shock-absorbing pad connecting the semi-trailer body 1 and the tank 2. The tank 2 has an inlet 201 and an outlet 202, with a conveying assembly 3 connected to the outlet 202. The conveying assembly 3 is a blower. Solenoid valves and flow meters are installed inside the inlet 201 and the outlet 202. The solenoid valve and flow meter inside port 202 are electrically connected to the control system. A buffer assembly 4 is installed inside the tank body 2. The buffer assembly 4 includes a grid plate 41 and a telescopic bag 42 installed in sequence. The telescopic bag 42 consists of an air bag 421, multiple sets of sliding frames 422 and multiple sets of sliding shafts 423. The sliding frames 422 are slidably arranged on the sliding shafts 423 in sequence. The sliding shafts 423 are arranged on the tank body 2. The air bag 421 is provided with several pleats and is arranged on multiple sets of sliding frames 422.

[0022] The air bag 421 is elastic. After passing through the tank 2 through a pipe, the air bag 421 is connected to an air pump. A pressure sensor is installed on the air bag 421. The air pump is installed on the tank 2. The pressure sensor connected to the air bag 421 is electrically connected to the control system. The air bag 421 is made of multi-layer composite material, including an inner elastic sealing layer, a middle tear-resistant fiber mesh layer, and an outer wear-resistant coating. One end of the air bag 421 is installed on the tank 2, and the other end of the air bag 421 is installed with a push plate 424. The push plate 424 is equipped with several ball bearings. The tank 2 is provided with a receiving cavity, which is used to accommodate the air bag 421 and the push plate 424 when the air bag 421 is deflated and contracted. A sealing structure is provided between the air bag 421 and the tank 2 to seal the gap between the air bag 421 and the tank 2, preventing powdery materials from being located below the air bag 421.

[0023] When the powdered material enters the tank 2 through the feed inlet 201, it first sits on the grid plate 41. Simultaneously, the control system starts the air pump to inflate the air bag 421. As the air pressure inside the air bag 421 increases, the pleats on the air bag 421 unfold and push the sliding frame 422 to one side to expand the buffer area. The pressure sensor on the air bag 421 monitors the internal air pressure in real time. When the air pressure reaches the system's preset threshold, the control system controls the air pump to stop working, maintaining a stable pressure inside the air bag 421, thereby forming an elastic buffer surface to reduce the noise and impact of the falling powdered material, forming a third buffer for the powdered material. The movement of the sliding frame 422 ensures that the air bag 421 can cover a larger area and adapt to different drop points.

[0024] When the air bag 421 is inflated and deployed, the air bag 421 pushes the push plate 424 to slide along the bottom of the tank 2. The push plate 424 helps the air bag 421 to deploy more stably and prevents the air bag 421 from deviating. The push plate 424 and the bottom of the tank 2 make rolling contact through ball bearings to ensure that the buffering force is evenly transmitted to the tank 2 and avoid local stress concentration. When the powder material falls, the push plate 424 acts as an auxiliary buffer point to further disperse the impact force and improve the buffering effect.

[0025] When the tank 2 needs to be cleaned, the control system controls the air pump to supply air into the air bag 421 or to extract air from the air bag 421 in a specific mode such as intermittent or high pressure; the inflation and deflation of the air bag 421 causes its surface to shake, which helps to shake off the attached material, and the dust generated during cleaning is discharged from the discharge port 202 through the conveying component 3 with the airflow. When the air bag 421 vibrates for a set time, the control system controls the air pump to draw the air out of the air bag 421, and the air bag 421 gradually contracts. The air bag 421 synchronously drives multiple sets of sliding frames 422 to move along with it. At this time, the air bag 421 and multiple sets of sliding frames 422 will move to one side of the tank 2. At this time, the conveying component 3 will draw the powder material in the tank 2 again to ensure the cleanliness of the inside of the tank 2.

[0026] The buffer assembly 4 also includes a grid plate 41, with a partition 203 installed below the grid plate 41. The partition 203 is located above the telescopic bag 42. The grid plate 41 is composed of a fixed plate 411 and multiple sets of connecting plates 412. The fixed plate 411 is set on the tank body 2 and has multiple rotating grooves. One end of the connecting plate 412 is provided with a rotating shaft. The multiple connecting plates 412 are rotatably set in the multiple sets of rotating grooves through the rotating shaft. A torsion spring is connected between the rotating shaft and the fixed plate 411.

[0027] The tank body 2 is equipped with multiple sets of baffles 203, which divide the tank body 2 into multiple compartments to achieve multi-level buffering in space. The connecting plate 412 is installed in the rotating groove of the fixed plate 411 through a rotating shaft and a torsion spring. The torsion spring provides a restoring force for the connecting plate 412.

[0028] When the powder material enters through the feed inlet 201, it falls onto the grid plate 41. The connecting plate 412 in the grid plate 41 rotates due to the impact, and the connecting plate 412 compresses the torsion spring. The powder material falls through the gap between the fixed plate 411 and the connecting plate 412. The powder material undergoes the first buffering through the grid plate 41, and is then guided to different compartments by the partition plate 203 to prevent the powder material from concentrating and impacting a specific area of ​​the tank 2.

[0029] A wear-resistant plate and a thin-film pressure sensor are sequentially arranged on the connecting plate 412. The wear-resistant plate prevents the thin-film pressure sensor from being damaged by long-term friction of powdery materials. Magnetorheological fluid is installed in the rotating tank, and a coil 413 is installed on the inner wall of the rotating tank. The two ends of the coil 413 are electrically connected to the control system. The rotating shaft and the rotating tank are sealed by a sealing ring to ensure that the magnetorheological fluid does not leak and to ensure that the rotating shaft rotates smoothly.

[0030] When the powder material impacts the connecting plate 412, the connecting plate 412 drives the rotating shaft to rotate. At the same time, the magnetorheological fluid provides damping for the rotating shaft. The control system calculates the impact force of the powder material based on the pressure data detected by the thin film pressure sensor, and then adjusts the current of the coil 413 according to the magnitude of the impact force of the powder material, so that the coil 413 generates a magnetic field and changes the viscosity of the magnetorheological fluid. When the impact of powdery materials is large, the control system increases the current flowing into coil 413, which thickens the magnetorheological fluid, increases the rotational resistance of the shaft and the connecting plate 412, and enhances the buffering effect. When the impact of powdery materials is small, the control system reduces the current flowing into coil 413, making the magnetorheological fluid thinner, reducing the resistance of the rotating shaft and connecting plate 412, and allowing the connecting plate 412 to rotate more freely.

[0031] A guide cylinder 204 is provided at the bottom of the partition 203. Several spray nozzles are provided on the guide cylinder 204. One-way valves are provided in the spray nozzles. The guide cylinder 204 passes through the tank 2 through a pipe and is connected to an external air supply system. The air supply system is located on the tank 2.

[0032] After the powder material falls through the connecting plate 412, it is guided downward through the partition 203. At the same time, the air supply system pressurizes the external air and delivers it into the guide cylinder 204. The air is sprayed onto the powder material through several spray nozzles. The airflow formed by the air provides a second buffer for the powder material and disperses it in different positions in the tank 2, preventing the powder material from accumulating in a specific area.

[0033] Working principle: Powdered material enters tank 2 through inlet 201. The powdered material first impacts the grid plate 41 for initial buffering. The connecting plate 412 of the grid plate 41 rotates under the impact of the powdered material and compresses the torsion spring. At the same time, the control system adjusts the current of coil 413 in real time according to the impact force detected by the thin film pressure sensor on the connecting plate 412 to change the viscosity of the magnetorheological fluid, thereby intelligently adjusting the buffering resistance and achieving adaptive buffering. Subsequently, the material passes through the grid plate 41 and is guided and diverted by multiple sets of baffles 203 to avoid accumulation. Meanwhile, the external air supply system supplies air to the guide cylinder 2 at the bottom of the baffles 203. 04. Pressurized air is delivered and sprayed through the nozzle to buffer the falling material a second time and disperse it, achieving uniform distribution. Finally, the material falls to the bottom of the tank 2, where the inflated telescopic bag 42 acts as a third buffer. The control system controls the air pump to maintain a constant air pressure in the air bag 421 based on the feedback from the pressure sensor inside the air bag 421, forming a wide elastic buffer surface that effectively absorbs the final impact and reduces noise. The ball-bearing pusher plate 424 pushed by the air bag 421 further assists in dispersing stress, and the sliding frame 422 moves along the sliding shaft 423 to expand the buffer area.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A semi-trailer for transporting powder and granular materials with multi-stage buffering function, characterized in that: Includes a semi-trailer body (1), a tank (2) is provided on the semi-trailer body (1), an inlet (201) and an outlet (202) are respectively provided on the tank (2), a conveying assembly (3) is connected to the outlet (202), and a buffer assembly (4) is provided inside the tank (2). The buffer assembly (4) includes a telescopic bag (42), which is composed of an air bag (421), multiple sets of sliding frames (422) and multiple sets of sliding shafts (423). The sliding frames (422) are slidably arranged on the sliding shafts (423), which are arranged on the tank body (2). The air bag (421) has several pleats and is arranged on multiple sets of sliding frames (422). One end of the air bag (421) is set on the tank body (2), and the other end of the air bag (421) is set with a push plate (424). The push plate (424) is provided with a number of ball bearings. The tank body (2) is provided with a storage cavity, which is used to accommodate the air bag (421) and the push plate (424) when the air bag (421) deflates and contracts. The buffer assembly (4) also includes a grid plate (41), a partition plate (203) is installed below the grid plate (41), the partition plate (203) is located above the telescopic bag (42), the grid plate (41) is composed of a fixed plate (411) and multiple sets of connecting plates (412), the fixed plate (411) is set on the tank body (2), the fixed plate (411) is provided with multiple rotating grooves, one end of the connecting plate (412) is provided with a rotating shaft, the multiple connecting plates (412) are respectively rotatably set in multiple sets of rotating grooves through the rotating shaft, and a torsion spring is connected between the rotating shaft and the fixed plate (411); The bottom of the partition (203) is provided with a guide cylinder (204), and the guide cylinder (204) is provided with a number of spray nozzles. A one-way valve is provided in the spray nozzle. The guide cylinder (204) passes through the tank (2) through a pipe and is connected to an external gas supply system. The gas supply system is located on the tank (2).

2. The semi-trailer for transporting powder and granular materials with multi-stage buffering function according to claim 1, characterized in that: The air bag (421) is elastic. The air bag (421) passes through the tank (2) through a pipe and is connected to an air pump. A pressure sensor is installed on the air bag (421). The air pump is installed on the tank (2). The pressure sensor connected to the air bag (421) is electrically connected to the control system.

3. A semi-trailer for transporting powder and granular materials with multi-stage buffering function according to claim 1, characterized in that: The air bag (421) is made of a multi-layer composite material, including an inner elastic sealing layer, a middle tear-resistant fiber mesh layer and an outer wear-resistant coating.

4. A semi-trailer for transporting powder and granular materials with multi-stage buffering function according to claim 1, characterized in that: A wear-resistant plate and a thin-film pressure sensor are sequentially arranged on the connecting plate (412). A magnetorheological fluid is arranged in the rotating groove. A coil (413) is arranged on the inner wall of the rotating groove. The two ends of the coil (413) are electrically connected to the control system. The rotating shaft and the rotating groove are rotated and sealed by a sealing ring.

5. A semi-trailer for transporting powder and granular materials with multi-stage buffering function according to claim 1, characterized in that: The semi-trailer body (1) and the tank (2) are connected by shock-absorbing pads.

6. A semi-trailer for transporting powder and granular materials with multi-stage buffering function according to claim 1, characterized in that: The conveying component (3) is a blower. Solenoid valves and flow meters are installed in the feed inlet (201) and the discharge outlet (202). The solenoid valves and flow meters in the feed inlet (201) and the discharge outlet (202) are electrically connected to the control system.

7. A semi-trailer for transporting powder and granular materials with multi-stage buffering function according to claim 1, characterized in that: A sealing structure is provided between the air bag (421) and the tank (2), which seals the gap between the air bag (421) and the tank (2) to prevent powder material from being located below the air bag (421).

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