Weighable double-port automatic automobile unloading hopper

Abstract

The application discloses a double-port automatic automobile unloading hopper which can be weighed, belongs to the technical field of hoppers, and aims at solving the problems that materials are prone to be accumulated when being put into the unloading hopper, vehicles need to be moved twice during loading and unloading, materials need to be weighed multiple times, residual materials are adhered to the inner wall of the hopper after unloading, and materials are prone to be partially accumulated to a high level and to be spilt and leaked when being unloaded from the fixed position and loaded into the transport vehicle, and the unloading hopper comprises a rack, the rack is a rectangular frame structure, weighing sensors are fixedly connected to the top corners of the rack, and the measuring ends of the four weighing sensors are fixedly connected with a hopper body.

Description

Technical Field

[0001] This invention belongs to the field of hopper technology, specifically, it relates to a weighable, dual-mouth automatic truck hopper. Background Technology

[0002] Truck unloading hoppers are loading and unloading equipment used in cargo handling at the dock front. They are usually single-port designs and are used to unload coal, cement, etc. When in use, materials are put in through the inlet at the top of the hopper and then loaded onto transport vehicles through the outlet at the bottom of the hopper. After the vehicles are loaded with materials, they are weighed.

[0003] For example, patent CN216944500U describes an environmentally friendly dock hopper, comprising: a hopper frame, a hopper mounted on the upper part of the hopper frame, and a temporary storage cylinder mounted in the lower part of the hopper's inner cavity. The upper end of the hopper is fixed to the upper part of the hopper frame, and an inverted concave frame is fixed to the upper part of the hopper frame. A vertically downward first servo motor is fixed to the middle part of the inverted concave frame. A connecting rod is fixedly connected to the drive end of the first servo motor, and a scraper is fixed to the side wall of the connecting rod, with the scraper adhering to the inner wall of the hopper. In the above patent, an inner cavity scraper is provided on the lower inner wall of the hopper. The inner cavity scraper can scrape and clean the inner wall of the temporary storage cylinder, avoiding the formation of nodules on the inner wall of the temporary storage cylinder. This is practical and suitable for widespread promotion and use.

[0004] Current truck hoppers still have some shortcomings in use, such as: material accumulation when fed into the hopper, and the single-port design of the hopper causing secondary vehicle repositioning during loading and unloading, requiring multiple weighings during transfer, which greatly affects production efficiency; some materials are adhesive, leaving residues on the inner wall of the hopper after unloading, which can easily cause mixing and is difficult to clean after solidification; during unloading, the material is unloaded from a fixed position into the transport vehicle, which can easily lead to high local accumulation and material spillage. Summary of the Invention

[0005] The purpose of this invention is to provide a weighing dual-port automatic truck hopper. By using this device, the problems mentioned above are solved, such as the accumulation of materials when they are put into the hopper, the need for multiple weighings during the loading and unloading process due to the secondary movement of the vehicle, the presence of residues adhering to the inner wall of the hopper after unloading, the difficulty in cleaning, and the problem that the material is unloaded from a fixed position into the transport vehicle during unloading, which can lead to localized accumulation and leakage.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a weighable dual-port automatic truck hopper, comprising a frame, the frame being a rectangular frame structure, with weighing sensors fixedly connected to the four corners of the top of the frame, the measuring ends of the four weighing sensors being fixedly connected to the hopper body, two feeding assemblies at the bottom of the hopper body, an mounting plate fixedly connected to the inner sidewall of the hopper body, a spiral shaft rotatably connected to the center of the bottom surface of the mounting plate, the bottom end of the spiral shaft rotatably connected to the inner bottom wall of the hopper body, a first feeding assembly fixedly connected to the upper outer wall of the spiral shaft, a pressure plate assembly threadedly connected to the outer wall of the spiral shaft, a first telescopic sleeve and a second telescopic sleeve fixedly connected to the bottom surface of the pressure plate assembly, pressure assemblies symmetrically and fixedly connected through the inner bottom wall of the hopper body, one end of each of the two pressure assemblies being fixedly connected between the first and second telescopic sleeves, a second feeding assembly fixedly connected to the lower end of the frame, one end of the second feeding assembly communicating with the pressure assemblies.

[0007] Furthermore, guide blocks are fixedly connected to the four corners of the inner cavity of the hopper body, and a first discharge port and a second discharge port are provided on the bottom wall of the inner cavity of the hopper body.

[0008] Furthermore, the feeding assembly includes feeding channels fixedly connected to the bottom ends of the first feeding port and the second feeding port, respectively. Each feeding channel is rotatably connected to a discharge gate on its outer wall. The lower end of the outer wall of the hopper body is fixedly connected to two electric push rods corresponding to the positions of the two discharge gates. The movable end of each electric push rod is rotatably connected to the side wall of the corresponding discharge gate.

[0009] Furthermore, the first fabric assembly includes a fixing sleeve fixedly connected to the outer wall of the spiral shaft, fixing rods symmetrically fixedly connected to the side wall of the fixing sleeve, a ball bearing embedded in one end of each fixing rod, a spreading plate fixedly connected to the bottom surface of each fixing rod, and multiple strip holes opened on the side wall of each spreading plate.

[0010] Furthermore, the pressure plate assembly includes a base plate threadedly connected to the outer wall of the spiral shaft. The base plate has a cuboid structure. A first through hole and a second through hole are provided on the top wall of the base plate at positions corresponding to the first and second discharge ports. A first sealing plate is rotatably connected to the long side wall of the base plate, and a second sealing plate is rotatably connected to the short side wall of the base plate.

[0011] Furthermore, each of the first and second sealing plates is symmetrically fixedly connected to an arc-shaped rod on its bottom surface. Each arc-shaped rod is slidably connected through the side wall of the substrate. The bottom surface of each of the first and second sealing plates is elastically connected to the side wall of the substrate by two first springs, and the arc-shaped rod passes through the inner ring of the first spring.

[0012] Furthermore, the pressure assembly includes two first plunger cylinders that are fixedly connected to the bottom surface of the inner cavity of the hopper body. A first piston rod is slidably connected to the top of each first plunger cylinder. A crossbar is fixedly connected to the top of each first piston rod. The two ends of the crossbar are fixedly connected to the movable end sidewalls of the first telescopic sleeve and the second telescopic sleeve, respectively. Each crossbar is elastically connected to the top surface of the corresponding first plunger cylinder by a second spring.

[0013] Furthermore, a solenoid valve is fixedly installed at the bottom of each of the first plunger cylinders, and a one-way valve is fixedly installed on the side wall of each of the first plunger cylinders.

[0014] Furthermore, the second fabric assembly includes a mounting frame fixedly connected to the lower end of the frame. The mounting frame has a H-shaped structure. Connecting frames are rotatably connected to both sides of the bottom surface of the mounting frame. One end of each connecting frame is rotatably connected to a fabric roller. A diagonal tension spring is fixedly connected to the side wall of each connecting frame. One end of each diagonal tension spring is fixedly connected to the side wall of the mounting frame. Driving components are symmetrically fixedly connected to the top surface of the mounting frame.

[0015] Furthermore, each of the driving components includes a support block fixedly connected to the top surface of the mounting frame. A second plunger cylinder is fixedly connected to both sides of the support block. A second piston rod is slidably connected to the bottom end of each of the two second plunger cylinders. One end of each of the two second piston rods is rotatably connected to the top wall of the connecting frame on both sides. The two second plunger cylinders are connected to the first plunger cylinder on the same side through a pressure pipe. A pressure relief valve is fixedly installed on the side wall of the pressure pipe near the second plunger cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention weighs the material loaded in the hopper body by setting a weighing sensor, and loads the material quickly and accurately through the large and small discharge ports. It eliminates the need for secondary vehicle relocation and multiple weighing, thus improving work efficiency. In addition, the material is evenly dispersed by the first material distribution component during the process of adding material to the hopper body. (2) By setting up a pressure plate assembly and a pressure assembly, the pressure plate assembly increases the pressure inside the first plunger cylinder when it moves down. As the material is unloaded from the feeding assembly, the pressure on the pressure plate assembly gradually decreases. Under the elastic force of the second spring, the pressure plate assembly is pushed up. The material adhering to the inner wall of the hopper body is scraped off by the first sealing plate and the second sealing plate, which facilitates cleaning and avoids mixing with other materials during subsequent loading. (3) By setting a second material feeding assembly, after part of the pressure in the first plunger cylinder is transmitted to the second plunger cylinder, the second piston rod pushes the connecting frame on both sides to drive the two material feeding rollers to move synchronously, spreading the accumulated material to both sides to avoid spillage. After spreading once, the pressure relief valve is opened to release the pressure in the second plunger cylinder. At this time, under the elastic force of the inclined spring, the connecting frame can be reset. By opening and closing the solenoid valve multiple times, the pressure in the first plunger cylinder can be completely released in steps, and spreading can be performed multiple times. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure of each component inside the hopper body in this invention; Figure 3 This is a top view schematic diagram of the main body of the hopper in this invention; Figure 4 This is a schematic diagram of the structure of the guide block, the first discharge port, and the second discharge port in the hopper body of the present invention; Figure 5 This is a schematic diagram of the feeding assembly in this invention; Figure 6 This is a schematic diagram illustrating the operational principle of weighing and unloading in this invention. Figure 7 This is a schematic diagram of the structure of the first fabric assembly in this invention; Figure 8 This is a schematic diagram of the pressure plate assembly in this invention; Figure 9 This is a bottom view schematic diagram of the pressure plate assembly in this invention; Figure 10 This is a schematic diagram of the structure of the first telescopic sleeve, the second telescopic sleeve, and the pressure assembly in this invention. Figure 11 This is a schematic diagram of the structure of the second fabric assembly in this invention; Figure 12 This is a schematic diagram showing the connection between the first plunger cylinder and the second plunger cylinder in this invention.

[0018] In the diagram: 1. Frame; 2. Weighing sensor; 3. Hopper body; 31. Guide block; 32. First discharge port; 33. Second discharge port; 4. Discharge assembly; 41. Discharge channel; 42. Unloading gate; 43. Electric push rod; 5. Mounting plate; 6. Spiral shaft; 7. First fabric feeding assembly; 71. Fixing sleeve; 72. Fixing rod; 73. Ball bearing; 74. Spreading plate; 741. Strip hole; 8. Pressure plate assembly; 81. Base plate; 811. First through hole; 812. Second through hole; 82. First sealing plate; 83. Second sealing plate; 84. Arc rod; 85. First spring; 9. First telescopic sleeve; 10. Second telescopic sleeve; 20. Pressure assembly; 201. First plunger cylinder; 202. First piston rod; 203. Crossbar; 204. Second spring; 205. Solenoid valve; 206. Check valve; 30. Second fabric assembly; 301. Mounting frame; 302. Connecting frame; 303. Fabric roller; 304. Diagonal tension spring; 305. Drive component; 3051. Support block; 3052. Second plunger cylinder; 3053. Second piston rod; 3054. Pressure pipe; 3055. Pressure relief valve. Detailed Implementation

[0019] 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.

[0020] To address the technical problem of material accumulation during hopper loading, requiring secondary vehicle repositioning and multiple weighings during loading and unloading, which significantly impacts production efficiency, such as… Figures 1-7 As shown, the following preferred technical solutions are provided: A weighing-capable dual-port automatic truck hopper includes a frame 1, which is a rectangular frame structure. Weighing sensors 2 are fixedly connected to the four corners of the top of the frame 1. The measuring ends of the four weighing sensors 2 are fixedly connected to the hopper body 3. The weighing sensors 2 are used to automatically weigh the material loaded in the hopper body 3. Two feeding components 4 are provided at the bottom of the hopper body 3. The feeding components 4 are dual-port. A mounting plate 5 is fixedly connected to the inner wall of the hopper body 3. A spiral shaft 6 is rotatably connected to the center of the bottom surface of the mounting plate 5. The spiral shaft 6 has a high-helix thread. The bottom end of the spiral shaft 6 is rotatably connected to the inner bottom wall of the hopper body 3. A first cloth is fixedly connected to the outer wall of the upper end of the spiral shaft 6. Material assembly 7 is used to spread and disperse the material loaded into the hopper body 3, so that the force on the four corners of the frame 1 is more even, and the material is avoided from piling up in one place, which is not conducive to material discharge. The outer wall of the spiral shaft 6 is threaded with a pressure plate assembly 8, which is used to support the material and gradually press down as the material is loaded. The bottom surface of the pressure plate assembly 8 is fixedly connected with a first telescopic sleeve 9 and a second telescopic sleeve 10. The inner bottom wall of the hopper body 3 is symmetrically and fixedly connected with pressure assemblies 20. One end of each pressure assembly 20 is fixedly connected between the first telescopic sleeve 9 and the second telescopic sleeve 10. The lower end of the frame 1 is fixedly connected with a second material distribution assembly 30, one end of which is connected to the pressure assembly 20.

[0021] Material is fed into the hopper body 3 from above. Weighing sensors 2 are installed at four contact points between the hopper body 3 and the frame 1 to weigh the material, thereby enabling accurate loading and unloading. After the material is loaded into the hopper body 3, it is supported by the pressure plate assembly 8. The pressure plate assembly 8 gradually presses down under the action of the material's gravity. When the pressure exceeds the static friction between it and the spiral shaft 6, it can drive the spiral shaft 6 to rotate. When the spiral shaft 6 rotates, it drives the first material distribution assembly 7 to rotate, dispersing the loaded material and preventing it from piling up in one place, which would be detrimental to unloading. When the material is loaded, the unloading assembly 4 is activated by the controller. The unloading assembly 4 is set with two openings. The large opening is used for rapid loading, and when the loading weight is close, the small opening is used for loading.

[0022] As the material gradually presses down under its own weight, the pressure plate assembly 8 compresses the pressure assembly 20 through the first telescopic sleeve 9 and the second telescopic sleeve 10. After the pressure assembly 20 is pressurized, it can be repeatedly opened and closed to transmit the pressure through the pipeline to the second spreading assembly 30, allowing the second spreading assembly 30 to open to both sides and spread the material loaded into the transport vehicle, preventing it from piling up too high in one place and causing material spillage. At the same time, as the material is loaded, the weight of the material in the hopper body 3 decreases. Under the elastic force of the pressure assembly 20, the pressure plate assembly 8 is gradually pushed upward. As the pressure plate assembly 8 rises, it scrapes off the material remaining on the inner wall of the hopper body 3, preventing material mixing and facilitating cleaning.

[0023] Guide blocks 31 are fixedly connected to the four corners of the inner cavity of the hopper body 3. The guide blocks 31 are set so that the pressure plate assembly 8 can always slide against it when it descends, so that it will not be deflected under the influence of the spiral shaft 6. A first discharge port 32 and a second discharge port 33 are opened on the bottom wall of the inner cavity of the hopper body 3. The first discharge port 32 has a larger opening for quick unloading, while the second discharge port 33 has a smaller opening and opens when it is close to the loading weight, so that the weight of the material loaded by the vehicle is more accurate.

[0024] The feeding assembly 4 includes feeding channels 41 that are fixedly connected to the bottom of the first feeding port 32 and the second feeding port 33 respectively. Each feeding channel 41 has a discharge gate 42 rotatably connected to its outer wall. The lower end of the outer wall of the hopper body 3 is fixedly connected to two electric push rods 43 corresponding to the positions of the two discharge gates 42. The movable end of each electric push rod 43 is rotatably connected to the side wall of the corresponding discharge gate 42. When loading materials, the electric push rod 43 retracts to open the discharge gate 42, and the materials fall from the corresponding feeding port into the feeding channel 41. After loading is completed, the electric push rod 43 pushes the discharge gate 42 to close the feeding channel 41.

[0025] The first fabric assembly 7 includes a fixed sleeve 71 fixedly connected to the outer wall of the spiral shaft 6. Fixed rods 72 are symmetrically fixedly connected to the side wall of the fixed sleeve 71. A ball bearing 73 is embedded in one end of each fixed rod 72. The length of the fixed rod 72 is as close as possible to the inner wall of the hopper body 3 to increase the area of ​​the first fabric assembly 7 for spreading the material. At the same time, the ball bearing 73 is arranged to contact the inner wall of the hopper body 3 when the fixed rod 72 rotates. A spreading plate 74 is fixedly connected to the bottom surface of each fixed rod 72 for pushing the accumulated material and dispersing it. Multiple strip holes 741 are opened on the side wall of each spreading plate 74 so that some material can pass through when the spreading plate 74 pushes a large amount of material, reducing resistance.

[0026] Specifically, after the loading vehicle arrives, the operator inputs the loading weight on the human-machine interface. The controller opens the hopper valve to load the material into the hopper body 3. The weighing sensor 2 weighs the hopper body 3, and the load information is displayed on the screen in real time via information transmission. As the material is loaded, the pressure on the pressure plate assembly 8 gradually increases. When the pressure exceeds the static friction with the spiral shaft 6, the pressure plate assembly 8 moves down along the spiral shaft 6 and drives the spiral shaft 6 to rotate. The spiral shaft 6 drives the first spreading assembly 7 to rotate, passing through the spreading plate... The rotation of 74 pushes the accumulated material to disperse it. After the material loaded into the hopper body 3 reaches the input value, the feeding component 4 is activated. First, one of the electric push rods 43 retracts to open the unloading gate 42 at the first feeding port 32 for rapid unloading. After approaching the loading weight, the unloading gate 42 at the first feeding port 32 closes, and the other electric push rod 43 retracts to open the unloading gate 42 at the second feeding port 33, continuing to feed until the set loading weight is reached. This makes the loading weight more accurate, eliminating the need for secondary vehicle relocation and multiple weighings, thus improving work efficiency.

[0027] To address the technical problem of some materials being adhesive, leaving residues on the hopper wall after unloading, causing mixing and making cleaning difficult after solidification, such as... Figures 8-10 As shown, the following preferred technical solutions are provided: The pressure plate assembly 8 includes a base plate 81 threadedly connected to the outer wall of the spiral shaft 6. The base plate 81 has a cuboid structure. A first through hole 811 and a second through hole 812 are provided on the top wall of the base plate 81 at the positions corresponding to the first discharge port 32 and the second discharge port 33. A first sealing plate 82 is rotatably connected to the long side wall of the base plate 81, and a second sealing plate 83 is rotatably connected to the short side wall of the base plate 81. When the pressure plate assembly 8 is pressed down, the first sealing plate 82 and the second sealing plate 83 abut against the inner wall of the hopper body 3 and rotate to adapt to the change in the internal size of the hopper body 3.

[0028] Each first sealing plate 82 and second sealing plate 83 has an arc-shaped rod 84 symmetrically fixedly connected to its bottom surface. Each arc-shaped rod 84 is slidably connected through the side wall of the base plate 81. The bottom surface of each first sealing plate 82 and second sealing plate 83 is elastically connected to the side wall of the base plate 81 by two first springs 85. The arc-shaped rod 84 passes through the inner ring of the first spring 85. Through the elastic force of the first spring 85, one end of the first sealing plate 82 and the second sealing plate 83 is always tightly attached to the side wall of the hopper body 3.

[0029] The pressure assembly 20 includes two first plunger cylinders 201 that are fixedly connected to the bottom surface of the inner cavity of the hopper body 3. Each first plunger cylinder 201 has a first piston rod 202 that is slidably connected to its top end. Each first piston rod 202 has a crossbar 203 that is fixedly connected to its top end. The two ends of the crossbar 203 are fixedly connected to the movable end sidewalls of the first telescopic sleeve 9 and the second telescopic sleeve 10, respectively. Each crossbar 203 is elastically connected to the top surface of the corresponding first plunger cylinder 201 by a second spring 204.

[0030] Specifically, when the pressure plate assembly 8 moves downward, it drives the first telescopic sleeve 9 and the second telescopic sleeve 10 to retract downward, thereby causing the crossbar 203 to drive the first piston rod 202 to move downward synchronously. The piston compresses the gas inside the first plunger cylinder 201, increasing the pressure inside the first plunger cylinder 201. As the material is unloaded from the feeding assembly 4, the pressure on the pressure plate assembly 8 gradually decreases. At this time, under the elastic force of the second spring 204, the first telescopic sleeve 9 and the second telescopic sleeve 10 can be driven to rise, pushing the pressure plate assembly 8 upward. The first sealing plate 82 and the second sealing plate 83 scrape off the material adhering to the inner wall of the hopper body 3, making it easier to clean and preventing it from mixing with other materials during subsequent loading.

[0031] To address the technical problem of material spillage during unloading, where material is discharged from a fixed position into a transport vehicle, leading to localized accumulation and potential leakage, such as... Figures 11-12 As shown, the following preferred technical solutions are provided: Each first plunger cylinder 201 is fixedly equipped with a solenoid valve 205 at its bottom end, which is used to control the release of internal pressure of the first plunger cylinder 201. Each first plunger cylinder 201 is fixedly equipped with a one-way valve 206 on its side wall. The one-way valve 206 is configured to allow gas to enter the first plunger cylinder 201 from the outside only.

[0032] The second fabric assembly 30 includes a mounting frame 301 fixedly connected to the lower end of the frame 1. The mounting frame 301 has a H-shaped structure. Connecting frames 302 are rotatably connected to both sides of the bottom surface of the mounting frame 301. One end of each connecting frame 302 is rotatably connected to a fabric roller 303. A diagonal tension spring 304 is fixedly connected to the side wall of each connecting frame 302. One end of each diagonal tension spring 304 is fixedly connected to the side wall of the mounting frame 301. A driving component 305 is symmetrically fixedly connected to the top surface of the mounting frame 301. The driving component 305 pushes the mounting frame 301 to rotate, causing the two fabric rollers 303 to open to both sides and spread the material loaded into the transport vehicle to both sides.

[0033] Each drive component 305 includes a support block 3051 fixedly connected to the top surface of the mounting frame 301. A second plunger cylinder 3052 is fixedly connected to both sides of the support block 3051. A second piston rod 3053 is slidably connected to the bottom end of each of the two second plunger cylinders 3052. One end of each of the two second piston rods 3053 is rotatably connected to the top wall of the connecting frame 302 on both sides. The two second plunger cylinders 3052 are connected to the first plunger cylinder 201 on the same side through a pressure pipe 3054. When the solenoid valve 205 is opened, the pressure inside the first plunger cylinder 201 is released into the second plunger cylinder 3052. A pressure relief valve 3055 is fixedly installed on the side wall of the pressure pipe 3054 near the second plunger cylinder 3052 for depressurizing the inside of the second plunger cylinder 3052.

[0034] Specifically, after unloading material into the transport vehicle for a period of time, the solenoid valve 205 is opened for a period of time and then closed, transferring part of the pressure in the first plunger cylinder 201 to the second plunger cylinder 3052. This causes the second piston rod 3053 to push the connecting frames 302 on both sides, causing them to rotate from a horizontal state to both sides. This drives the two material rollers 303 to move synchronously, spreading the accumulated material to both sides to avoid spillage. After spreading once, the pressure relief valve 3055 is opened to release the pressure in the second plunger cylinder 3052. At this time, under the elastic force of the inclined spring 304, the connecting frame 302 can be reset. By opening and closing the solenoid valve 205 multiple times, the pressure in the first plunger cylinder 201 is completely released in stages, and spreading can be performed multiple times. As the material in the hopper body 3 gradually decreases, when the pressure plate assembly 8 rises, the first plunger cylinder 201 draws in gas again through the one-way valve 206.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A weighable, double-mouth automatic truck unloading hopper, comprising a frame (1), the frame (1) being a rectangular frame structure, characterized in that, Weighing sensors (2) are fixedly connected to the four corners of the top of the frame (1). The measuring ends of the four weighing sensors (2) are fixedly connected to the hopper body (3). Two feeding assemblies (4) are provided at the bottom of the hopper body (3). An installation plate (5) is fixedly connected to the inner wall of the hopper body (3). A spiral shaft (6) is rotatably connected to the center of the bottom surface of the installation plate (5). The bottom end of the spiral shaft (6) is rotatably connected to the inner bottom wall of the hopper body (3). A first fabric feeding assembly (7) is fixedly connected to the outer wall of the upper end of the spiral shaft (6). A pressure plate assembly (8) is threaded onto the outer wall of the spiral shaft (6). A first telescopic sleeve (9) and a second telescopic sleeve (10) are fixedly connected to the bottom surface of the pressure plate assembly (8). A pressure assembly (20) is symmetrically and fixedly connected through the inner bottom wall of the hopper body (3). One end of each of the two pressure assemblies (20) is fixedly connected between the first telescopic sleeve (9) and the second telescopic sleeve (10). A second fabric assembly (30) is fixedly connected to the lower end of the frame (1). One end of the second fabric assembly (30) is connected to the pressure assembly (20). The hopper body (3) has a first discharge port (32) and a second discharge port (33) on the bottom wall of the inner cavity. The pressure plate assembly (8) includes a base plate (81) threadedly connected to the outer wall of the spiral shaft (6). The base plate (81) has a cuboid structure. A first through hole (811) and a second through hole (812) are provided on the top wall of the base plate (81) at the positions corresponding to the first discharge port (32) and the second discharge port (33). A first sealing plate (82) is rotatably connected to the long side wall of the base plate (81), and a second sealing plate (83) is rotatably connected to the short side wall of the base plate (81). Each of the first sealing plate (82) and the second sealing plate (83) has an arc-shaped rod (84) symmetrically fixedly connected to its bottom surface. Each arc-shaped rod (84) is slidably connected through the side wall of the substrate (81). The bottom surface of each of the first sealing plate (82) and the second sealing plate (83) is elastically connected to the side wall of the substrate (81) by two first springs (85), and the arc-shaped rod (84) passes through the inner ring of the first spring (85). The second fabric assembly (30) includes a mounting frame (301) fixedly connected to the lower end of the frame (1). The mounting frame (301) has a H-shaped structure. Connecting frames (302) are rotatably connected to both sides of the bottom surface of the mounting frame (301). One end of each connecting frame (302) is rotatably connected to a fabric roller (303). A diagonal tension spring (304) is fixedly connected to the side wall of each connecting frame (302). One end of each diagonal tension spring (304) is fixedly connected to the side wall of the mounting frame (301). A driving component (305) is symmetrically fixedly connected to the top surface of the mounting frame (301).

2. The weighing double-mouth automatic truck hopper according to claim 1, characterized in that: Guide blocks (31) are fixedly connected to the four corners of the inner cavity of the hopper body (3).

3. The weighing double-mouth automatic truck hopper according to claim 2, characterized in that: The feeding assembly (4) includes feeding channels (41) fixedly connected to the bottom of the first feeding port (32) and the second feeding port (33), respectively. Each feeding channel (41) has a discharge gate (42) rotatably connected to its outer wall. The lower end of the outer wall of the hopper body (3) is fixedly connected to two electric push rods (43) at the positions corresponding to the two discharge gates (42). The movable end of each electric push rod (43) is rotatably connected to the side wall of the corresponding discharge gate (42).

4. The weighing double-mouth automatic truck hopper according to claim 1, characterized in that: The first fabric assembly (7) includes a fixed sleeve (71) fixedly connected to the outer wall of the spiral shaft (6). Fixed rods (72) are symmetrically fixedly connected to the side wall of the fixed sleeve (71). A ball bearing (73) is embedded in one end of each fixed rod (72). A spreading plate (74) is fixedly connected to the bottom surface of each fixed rod (72). Multiple strip holes (741) are opened on the side wall of each spreading plate (74).

5. A weighing double-mouth automatic truck hopper according to claim 1, characterized in that: The pressure assembly (20) includes two first plunger cylinders (201) that are fixedly connected to the bottom surface of the inner cavity of the hopper body (3). Each first plunger cylinder (201) has a first piston rod (202) that is slidably connected to its top end. Each first piston rod (202) has a crossbar (203) that is fixedly connected to its top end. The two ends of the crossbar (203) are fixedly connected to the movable end sidewalls of the first telescopic sleeve (9) and the second telescopic sleeve (10), respectively. Each crossbar (203) is elastically connected to the top surface of the corresponding first plunger cylinder (201) through a second spring (204).

6. A weighing double-mouth automatic truck hopper according to claim 5, characterized in that: A solenoid valve (205) is fixedly installed at the bottom of each of the first plunger cylinders (201), and a one-way valve (206) is fixedly installed on the side wall of each of the first plunger cylinders (201).

7. A weighing double-mouth automatic truck hopper according to claim 5, characterized in that: Each of the drive components (305) includes a support block (3051) fixedly connected to the top surface of the mounting frame (301). A second plunger cylinder (3052) is fixedly connected to both sides of the support block (3051). A second piston rod (3053) is slidably connected to the bottom end of each of the two second plunger cylinders (3052). One end of each of the two second piston rods (3053) is rotatably connected to the top wall of the connecting frame (302) on both sides. The two second plunger cylinders (3052) are connected to the first plunger cylinder (201) on the same side through a pressure pipe (3054). A pressure relief valve (3055) is fixedly installed on the side wall of the pressure pipe (3054) near the second plunger cylinder (3052).

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