Dumper compartment capable of removing bottom adhesion

Abstract

The utility model relates to the technical field of vehicles facilitating unloading, in particular to a dumper cargo compartment capable of removing bottom adhesion. A scraping tool is arranged at the bottom of a cargo compartment of the dump truck capable of removing bottom adhesion, the scraping tool comprises a scraping body which is located in the cargo compartment and extends leftwards and rightwards and a left transmission connecting end and a right transmission connecting end, avoiding channels for the left transmission connecting end and the right transmission connecting end of the scraping tool to extend out are arranged at the bottoms of a left side plate and a right side plate of the cargo compartment respectively, and the avoiding channels extend in the front-back direction. The transmission connecting end of the scraping tool is connected with a viscosity removing driving mechanism, and the viscosity removing driving mechanism is used for driving the scraping tool to move front and back on the bottom face in the cargo compartment so that the scraping tool can move from front to back to scrape materials at the bottom of the cargo compartment when the materials are dumped. The elastic sealing body is used for deforming to form avoidance under the top pressure of the scraper when the scraper moves, and shielding the avoidance channel to block the material after the elastic deformation is recovered; and the scrapers are used for removing the adhered materials, so that the cargo compartment is not easy to damage, and the materials can be removed more cleanly.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology for easy unloading, and specifically to a self-unloading truck cargo box with a removable bottom. Background Technology

[0002] Dump trucks are commonly used transport vehicles in coal mines and similar environments. They can tilt the cargo box backward using a lifting mechanism on the chassis to unload materials. However, for some sticky materials, such as coal, the coal at the bottom of the cargo box is compacted during unloading. Even if the cargo box is tilted at a steep angle, the coal at the bottom still adheres to the cargo box and cannot be unloaded smoothly. If not removed, this will reduce the capacity for the next coal transport. Currently, vibrating the cargo box is often used to remove the adhered coal, but this method impacts the cargo box floor, which can easily damage the cargo box. Furthermore, the de-adhesion effect is not ideal, leaving residues, and the efficiency is relatively low. Utility Model Content

[0003] The purpose of this invention is to provide a dump truck cargo box that can remove sticky bottom material, so as to solve the problem that the current dump truck method of removing the material adhering to the bottom of the cargo box by vibration is easy to damage the cargo box and easy to not clean it completely.

[0004] The technical solution of this utility model for a self-unloading truck cargo box with removable bottom is:

[0005] A de-sticking dump truck cargo box is provided, the bottom of which is equipped with a scraper. The scraper includes a scraping body located inside the cargo box and extending to the left and right, and two transmission connection ends on the left and right sides. The bottom of the left and right side panels of the cargo box are respectively provided with clearance channels for the left and right transmission connection ends of the scraper to extend out. The clearance channels extend in the front-to-back direction. The transmission connection ends of the scraper are connected to a de-sticking drive mechanism. The de-sticking drive mechanism is used to drive the scraper to move back and forth on the bottom surface inside the cargo box so that when unloading materials, the scraper moves from front to back to scrape off the materials at the bottom of the cargo box. An elastic sealing body is provided in the clearance channel. The elastic sealing body is used to deform under the pressure of the scraper when the scraper moves to form clearance, and after the elastic deformation recovers, it blocks the clearance channel to block the materials.

[0006] Furthermore, the de-adhesion drive mechanism includes a lead screw and nut pair and a drive motor. The lead screw and nut pair has two sets to connect to the two transmission connection ends of the scraper respectively. The lead screw extends in the front-back direction and is located outside the clearance channel at the bottom of the cargo box side panel. The nut of the lead screw and nut pair is fixed to the scraper. The drive motor is used to drive the lead screw to rotate so that the rotational motion of the lead screw is converted into the linear motion of the nut, thereby driving the scraper to move back and forth.

[0007] Furthermore, the de-adhesion drive mechanism includes a drive shaft, a drive motor, and a drive shaft that is installed between the cab and the cargo box of the dump truck. The drive motor is connected to the middle of the drive shaft, and both ends of the drive shaft are connected to the screw drives of two sets of screw nut pairs.

[0008] Furthermore, a cover is fixed to the bottom of the outer wall of the cargo box side panel, the cover covers the corresponding clearance channel and the lead screw and nut are located inside the cover.

[0009] Furthermore, the bottom of the cover has a downward-facing opening that extends in the front-to-back direction.

[0010] Furthermore, the scraper body is a scraper blade, and the scraper blade has a through-hole in the center. The scraper includes a push rod that passes through and is fixed in the fixed hole. The two ends of the push rod protrude from the scraper blade to form two transmission connection ends of the scraper.

[0011] Furthermore, the scraper body has a trapezoidal cross-section, has front and rear sloping sides, and the top surface width is smaller than the bottom surface width. The bottom surface of the scraper body is in contact with the bottom surface inside the cargo box.

[0012] Furthermore, the cargo compartment includes a cover plate disposed on its top, one end of which is hinged to the body of the cargo compartment for opening and closing the cargo compartment when the relative bodies are tilted.

[0013] Furthermore, the cover has a state for obstructing the view above the cab during its flipping stroke.

[0014] Furthermore, the cargo compartment is equipped with sprayers for dust suppression during material unloading.

[0015] Beneficial Effects: This utility model innovatively provides a dump truck cargo box that utilizes a scraper to remove adhering materials from the bottom of the cargo box. The scraper is located at the bottom of the cargo box, and its scraping body extends laterally to accommodate the width of the cargo box, facilitating thorough material removal. The left and right drive connection ends of the scraper extend outward from the clearance channels at the bottom of the left and right side panels of the cargo box. The drive connection ends of the scraper are connected to a de-adhesion drive mechanism. The de-adhesion drive mechanism is located outside the cargo box without occupying internal space and does not affect material loading and unloading. The de-adhesion drive mechanism can drive the scraper to move back and forth. The clearance channels allow the scraper to move forward and backward, and an elastic sealing body is provided within the clearance channels. The body deforms under the pressure of the scraper at the point where the scraper passes through, and deforms accordingly during the movement of the scraper to avoid it. At the same time, it adheres tightly to the scraper to block the material. The part of the elastic sealing body not pressed by the scraper can block the avoidance channel, reducing the leakage of material from the cargo box through the avoidance channel and preventing material from affecting the movement of the scraper's transmission connection end. When dumping materials from the dump truck, for materials adhering to the bottom surface of the cargo box, the de-adhesion drive mechanism drives the scraper to move back and forth. The scraping body of the scraper moves from front to back on the bottom surface of the cargo box, thereby scraping the material at the bottom of the cargo box towards the dumping port at the rear of the cargo box. This method is less likely to damage the cargo box and can also clean more thoroughly, which helps to improve efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a dump truck with a cargo box that can be de-sticked to the bottom, as an embodiment of the present invention.

[0017] Figure 2 for Figure 1 A structural diagram of the cargo compartment;

[0018] Figure 3 for Figure 1 A schematic diagram of the cargo compartment in the middle;

[0019] Figure 4 for Figure 2 A top view of the cargo compartment after the cover has been removed;

[0020] Figure 5 for Figure 4 Top view of the connection between the scraper and the lead screw and nut seat;

[0021] Figure 6 for Figure 4 Side view of the connection between the scraper and the lead screw and nut seat;

[0022] Figure 7 for Figure 1 A schematic diagram showing the view from one side of the bottom of the casing;

[0023] Figure 8 for Figure 7 A schematic diagram of the casing;

[0024] Figure 9 for Figure 2 A top view of the cover plate and the cover plate drive mechanism.

[0025] Figure 10 for Figure 1 This is a diagram showing the dump truck's cover flipped up above the cab.

[0026] In the picture: 100, driver's cab;

[0027] 101. Sprayer; 102. Water tank; 103. Water pump;

[0028] 201. Drive shaft; 202. Drive shaft bearing housing; 203. Desiccant motor bracket; 204. Desiccant drive motor; 205. Driven sprocket; 206. Chain; 207. Drive sprocket; 208. Driven bevel gear; 209. Driven bevel gear; 210. Lead screw bearing housing; 211. Lead screw; 212. Scraper; 213. Push rod; 214. Nut seat; 215. Nut connecting plate; 216. Push rod connecting seat; 217. Fixing bolt;

[0029] 301. Cover plate; 302. Drive rod; 303. Cotter pin; 304. Connecting lug; 305. Drive rod bearing housing; 306. Drive gear; 307. Driven gear; 308. Tilting motor bracket; 309. Tilting drive motor;

[0030] 400. Body; 401. Side panel; 402. Rubber sealing strip; 403. Front panel; 404. Bottom panel; 405. Cover; 4051. Bottom opening; 406. Rear panel; 407. Reinforcing rib. Detailed Implementation

[0031] The basic concept of this utility model of a self-dumping truck cargo box with a removable bottom is to use a drive mechanism outside the cargo box to drive a scraper inside the cargo box to move from front to back on the bottom surface of the cargo box, thereby scraping the material at the bottom of the cargo box toward the unloading port at the rear of the cargo box. This is less likely to damage the cargo box and can also clean it more thoroughly.

[0032] The technical solution of this utility model will be described in detail below with reference to specific embodiments.

[0033] An embodiment of the present invention for a self-unloading truck cargo box with a removable bottom:

[0034] like Figure 1 , Figure 2 , Figure 3 As shown, the dump truck using the removable bottom dump truck body includes a cab 100 and a cargo box located behind the cab 100. The cargo box is fixed to the chassis of the dump truck and is a removable bottom dump truck body. The cargo box includes a body 400 and a cover plate 301, which can cover the top opening of the body 400. The front-to-back direction is the length direction of the dump truck, the left-to-right direction is the width direction of the dump truck, and the up-down direction is the height direction of the dump truck. The body 400 includes a front panel 403, a rear panel 406, two side panels 401, and a bottom panel 404. The upper surface of the bottom panel 404 forms the bottom surface inside the cargo box. The upper end of the rear panel 406 is hinged to the upper end of the two side panels 401, thereby forming an openable rear door. When the rear door is opened, a dumping opening is formed at the bottom. When loading materials, the cover plate 301 flips to open the top opening of the compartment 400, and the rear door closes. After loading, the cover plate 301 is closed. When it is necessary to unload materials, the rear door opens, and the lifting mechanism on the chassis can lift the front of the compartment, allowing the materials inside to be unloaded from the unloading port at the bottom of the rear of the compartment.

[0035] Some materials are highly viscous, and some will adhere to the bottom of the cargo box during unloading. To more thoroughly remove this residual material, a scraper is installed at the bottom of the cargo box. The scraper includes a scraping body extending laterally inside the cargo box and two drive connection ends on the left and right. The scraping body is the scraper blade 212, and the length of the scraper blade 212 is adapted to the width of the cargo box. The bottom of the left and right side panels 401 of the cargo box is provided with a clearance channel for the left and right drive connection ends of the scraper to extend. The clearance channel extends in the front-to-back direction. The drive connection end of the scraper is connected to a de-adhesion drive mechanism, which is used to drive the scraper to move back and forth on the bottom surface of the cargo box so that the scraper moves from front to back during unloading to scrape off the material at the bottom of the cargo box. An elastic seal is provided in the clearance channel. The elastic seal is used to deform under the pressure of the scraper when the scraper moves to form a clearance, and after the elastic deformation recovers, it blocks the clearance channel to block the material.

[0036] The scraper's main body extends left and right to accommodate the width of the cargo compartment, facilitating thorough material removal. The left and right drive connection ends of the scraper extend outwards from the clearance channels at the bottom of the left and right side panels 401 of the cargo compartment. These drive connection ends connect to a de-adhesion drive mechanism, which is located outside the cargo compartment without occupying internal space and thus not interfering with material loading and unloading. The de-adhesion drive mechanism can move the scraper back and forth. The clearance channels allow for the scraper's forward and backward movement. An elastic seal is installed within the clearance channels. This elastic seal deforms under the pressure of the scraper where it passes through, and deforms accordingly during scraper movement, thus avoiding material contact with the scraper. The portion of the elastic seal not pressed by the scraper can block the clearance channels, reducing material leakage from the cargo compartment and preventing material from affecting the movement of the scraper's drive connection ends. When dump trucks unload materials, for materials adhering to the bottom surface of the cargo box, the scraper moves back and forth through the de-adhesion drive mechanism. The scraper blade 212 moves from front to back along the bottom surface of the cargo box, thereby scraping off the material at the bottom of the cargo box towards the unloading port at the rear of the cargo box. This method is less likely to damage the cargo box and can also clean it more thoroughly, which helps to improve efficiency.

[0037] Combination Figure 4 , Figure 5 , Figure 6The adhesive drive mechanism includes a lead screw and nut pair and a drive motor. The lead screw and nut pair has two sets to connect to the two transmission connection ends of the scraper. The lead screw 211 extends in the front-to-back direction and is located outside the clearance channel at the bottom of the cargo box side panel 401. The nut of the lead screw and nut pair is fixed to the transmission connection end of the scraper. The drive motor drives the lead screw 211 to rotate, so that the rotational motion of the lead screw 211 is converted into the linear motion of the nut, thereby driving the scraper to move back and forth. The transmission structure is simple and occupies little space. In other embodiments, a slide rail can be provided on the bottom outer wall of the cargo box side panel. A slide block is provided on the slide rail, so that the two extended transmission connection ends of the scraper are fixed on the slide block. A motor is provided on the slide block, and a gear is provided on the motor output shaft. A rack is fixed on the slide rail. The gear and rack mesh to use the motor and gear-rack mechanism to drive the slide block to move along the slide rail, thereby realizing the front-to-back movement of the scraper.

[0038] The de-adhesion drive mechanism includes a drive shaft 201. The drive motor and drive shaft 201 are located between the cab 100 and the cargo box of the dump truck. The drive motor is connected to the middle of the drive shaft 201. The drive motor is a de-adhesion drive motor 204. The drive shaft 201 extends in the left-right direction, and both ends of the drive shaft 201 are respectively connected to the front ends of the lead screws 211 of two sets of lead screw and nut assemblies. The left and right lead screw and nut assemblies can be driven by a single de-adhesion drive motor 204, resulting in a simple structure and cost-effectiveness. In other embodiments, each of the two sets of lead screw and nut assemblies can be equipped with a separate drive motor to maintain synchronous operation.

[0039] The scraper 212 has a through-hole in the center. The scraper includes a push rod 213 that passes through and is fixed in the fixing hole of the scraper 212. The two ends of the push rod 213 protrude from the scraper 212 to form two transmission connection ends of the scraper. The end of the push rod 213 is located in the clearance channel at the bottom of the side plate 401, which can reduce the size of the scraper passing through the clearance channel, facilitate the deformation and clearance of the elastic seal in the clearance channel, and facilitate the manufacturing of the scraper. The scraper 212 can be made of a different material than the push rod 213.

[0040] Push rod 213 has push rod connecting seats 216 fixed at both ends. The push rod connecting seats 216 form the transmission connection end. The nut of the lead screw nut pair includes a nut seat 214 threadedly connected to the lead screw 211 and a nut connecting plate 215 fixedly connected to the nut seat 214. The nut connecting plate 215 and the push rod connecting seat 216 are fixedly connected by bolts to realize the fixed connection between the nut and the transmission connection end of the scraper.

[0041] The scraper 212 has a trapezoidal cross-section, with a top surface, a bottom surface, and front and rear inclined surfaces. The width of the top surface of the scraper 212 is smaller than the width of the bottom surface. The bottom surface of the scraper 212 is in contact with the bottom surface of the cargo box, giving the scraper 212 two pointed ends, which facilitates the removal of adhering materials and prevents residual materials from accumulating on the front side of the scraper 212 during its return stroke. In other embodiments, the scraper may only have a front inclined surface and a vertical rear surface.

[0042] Combination Figure 7 , Figure 8 A cover 405 is fixed to the bottom of the outer wall of the cargo box side panel 401. The cover 405 covers the corresponding clearance channel, and the lead screw 211 and nut seat 214 are located inside the cover 405, which can form protection and improve the strength of the cargo box side panel 401. The bottom of the cover 405 has a downward-facing bottom opening 4051, which extends in the front-back direction. This allows materials that enter the body of the cover 405 through the clearance channel gaps to fall out through the bottom opening 4051, and can also clean dirt inside the cover 405.

[0043] The de-adhesion drive mechanism includes a de-adhesion drive motor 204, a de-adhesion motor bracket 203, a drive sprocket 207, a driven sprocket 205, a chain 206, a drive shaft 201, a drive shaft bearing housing 202, a drive bevel gear 208, a driven bevel gear 209, a lead screw 211, a lead screw bearing housing 210, a nut housing 214, and a nut connecting plate 215. The scraper includes a push rod connecting seat 216, a push rod 213, and a scraper 212. The push rod connecting seat 216 of the scraper is fixed to the nut connecting plate 215 of the lead screw nut pair by fixing bolts 217.

[0044] The de-adhesion motor bracket 203 and the drive shaft bearing seat 202 are fixed to the outside of the front panel 403 of the cargo box. The de-adhesion drive motor 204 is mounted on the de-adhesion motor bracket 203. The drive shaft 201 is rotatably mounted on the drive shaft bearing seat 202, which is located diagonally below the de-adhesion drive motor 204. The drive sprocket 207 is fixed on the output shaft of the de-adhesion drive motor 204, and the driven sprocket 205 is fixed in the middle of the drive shaft 201. Power is supplied to the drive shaft 201 via the drive sprocket 207, driven sprocket 205, and chain 206. Each end of the drive shaft 201 is equipped with a drive bevel gear 208, which drives the driven bevel gear 209 to rotate through gear meshing. The driven bevel gear 209 is fixed to the front end of the lead screw 211. The lead screw 211 is rotatably mounted on the front and rear lead screw bearing seats 210, which are fixed to the outside of the side plate 401 and installed inside the cover 405. To facilitate the installation of the driven bevel gear 209 and the lead screw bearing seats 210, both ends of the lead screw 211 are smooth rods. A nut seat 214 is threaded onto the lead screw 211, and a nut connecting plate 215 is welded to the nut seat 214. The driven bevel gear 209 drives the lead screw 211 to rotate around its axis, thereby driving the nut seat 214 to perform reciprocating linear motion.

[0045] The scraper 212 is placed at the bottom of the cargo compartment, and its lateral extension is slightly less than the width of the cargo compartment. A rectangular through-hole is provided in the length direction of the scraper 212. The push rod 213 is a rectangular tube that passes through the scraper 212. Both ends of the push rod 213 extend out of the side panels 401 through clearance channels at the bottom of the side panels 401. Each end of the push rod 213 is welded with a push rod connecting seat 216. The nut connecting plate 215 and the push rod connecting seat 216 are connected as one unit by fixing bolts 217. Thus, the nut seat 214 pushes the push rod 213 to reciprocate, which in turn pushes the scraper 212 to reciprocate within the cargo compartment.

[0046] Elastic rubber sealing strips 402 are installed on the upper and lower side walls of the bottom clearance channel of the side plate 401. The two rubber sealing strips 402 inside the clearance channel form an elastic seal. The two rubber sealing strips 402 fit tightly together to close the clearance channel and prevent material from entering the cover 405 along the clearance channel. They also allow the push rod 213 to push open the rubber sealing strip 402 at the position of the push rod 213 under the action of thrust, so that the push rod 213 can move in the gap, while the rubber sealing strips 402 at other positions remain closed. The rubber sealing strip 402 is a rubber strip extending in the front-back direction. It can elastically deform under high top pressure and has a certain degree of hardness to block material. The two covers 405 are symmetrically installed on the bottom outer side of the left and right side plates 401 of the box body 400. They can cover the screw nut transmission mechanism and the bevel gear transmission mechanism, and can also serve as a reinforcing structure to improve the pressure resistance of the side plate 401. Since the length of the clearance channel is close to the length of the body 400 to meet the movement range of the scraper, the bottom of the side plate 401 has a relatively long section that is suspended. In order to further strengthen the side plate 401, several reinforcing ribs 407 are provided on the side plate 401 to ensure that the strength of the side plate 401 meets the usage requirements.

[0047] When the dump truck unloads coal, the cargo box is lifted and tilted to a certain angle, and the coal is dumped, but some coal still sticks to the cargo box floor 404. The scraper 212 is initially positioned at the front end of the cargo box floor 404. After the operator presses the start button for the de-sticking system, the de-sticking drive motor 204 rotates forward, driving the drive shaft 201 to rotate forward around the shaft via the drive sprocket 207, chain 206, and driven sprocket 205. The drive shaft 201 drives the drive bevel gears 208 at both ends to rotate forward. The two drive bevel gears 208 mesh to drive the two driven bevel gears 209 to rotate synchronously forward. Then, the two driven bevel gears 209 drive the two lead screws 211 on both sides of the cargo box to rotate. The shaft rotates synchronously forward, and the forward rotation of the lead screw 211 drives the nut seat 214 to move backward in a straight line. The nut seat 214 pushes the push rod 213 backward through the nut connecting plate 215 and the push rod connecting seat 216. In turn, the push rod 213 pushes the scraper 212 backward until it reaches the rear end of the cargo box floor 404. During the movement, the scraper 212 scrapes the coal adhering to the cargo box floor 404. After the coal separates from the cargo box floor 404, it is discharged from the unloading port along the inclined cargo box floor 404 under the action of gravity, completing the removal of the coal. Then, the de-coating drive motor 204 automatically reverses, driving the scraper 212 forward to the front end of the cargo box floor 404. Then the de-coating drive motor 204 stops, thus completing the return stroke of the scraper 212. The operator can complete one round-trip operation of the scraper 212 for shoveling coal and returning by pressing the start button once.

[0048] Combination Figure 9 , Figure 10The cargo compartment includes a cover plate 301 on its top. One end of the cover plate 301 is hinged to the compartment body 400 for opening and closing the cargo compartment when it is tilted relative to the compartment body 400. By covering the compartment body 400 with the cover plate 301, dust can be prevented from being generated during the transportation of materials. In other embodiments, the cover plate may be omitted as needed, and the top opening of the cargo compartment may be open.

[0049] The front end of the cover plate 301 is hinged to the top of the front panel 403 of the body 400. During its flipping stroke, the cover plate 301 has a state of covering the cab 100, which can protect the cab 100 when loading materials and prevent materials from falling into the area between the cab 100 and the cargo box.

[0050] The cover 301 opening and closing system of the cargo compartment includes a tilting drive motor 309, a tilting motor bracket 308, a drive gear 306, a driven gear 307, a transmission rod 302, a transmission rod bearing seat 305, a cotter pin 303, and a cover 301. The transmission rod bearing seat 305 and the tilting motor bracket 308 are fixed to the outside of the front panel 403 of the cargo compartment. The tilting drive motor 309 is mounted on the tilting motor bracket 308, the transmission rod 302 is mounted on the transmission rod bearing seat 305, the drive gear 306 is mounted on the output shaft of the tilting drive motor 309, and the driven gear 307 is mounted on the transmission rod 302. The tilting drive motor 309 drives the transmission rod 302 to rotate around its axis through the drive gear 306 and the driven gear 307. The front end of the cargo box cover 301 is provided with connecting ears 304 with cylindrical holes. The two connecting ears 304 are sleeved on the transmission rod 302 through the cylindrical holes. The connecting ears 304 and the transmission rod 302 are both provided with through holes at corresponding positions to allow the insertion of cotter pins 303. Thus, the cotter pins 303 drive the transmission rod 302 to rotate the cover 301 around the transmission rod 302, thereby completing the opening and closing of the cargo box cover 301.

[0051] The cover plate 301 can be made of plastic or steel. The cover plate 301 rotates around the drive rod 302. When rotated backward to its limit position, it covers the dump truck's cargo box 400. When flipped forward to its limit position, it is directly above the dump truck's cab 100. When the loader loads coal into the dump truck's cargo box, the cover plate 301 flips forward to its limit position to catch coal spilled from the loader's bucket onto the cab 100, thus protecting the cab and the crew.

[0052] The cargo box cover 301 is initially closed, covering the dump truck body 400. When loading coal, the cargo box cover 301 needs to be opened, allowing the loader to load coal from above the cargo box. After the operator presses the start button for the automatic opening and closing system of the cover 301, the tilting drive motor 309 rotates clockwise. This, through the drive gear 306 and driven gear 307, drives the transmission rod 302 to rotate clockwise around its axis. The transmission rod 302, via the cotter pin 303, drives the cover 301 to rotate clockwise around the transmission rod 302 until it swings forward to its limit position, with the cover 301 directly above the dump truck's cab 100. Figure 10 As shown. The tilting drive motor 309 automatically stops rotating, completing the opening of the cover plate 301. After the coal is loaded, the operator presses the close button of the automatic opening and closing system of the cover plate 301, causing the tilting drive motor 309 to reverse, driving the cover plate 301 to rotate around the transmission rod 302 to the closed state. Thus, the automatic opening and closing of the cover plate 301 is completed.

[0053] The dump truck is also equipped with a dust suppression spray system, which includes a sprayer 101, a water pipe (not shown in the figure), a water pump 103, and a water tank 102. The sprayer 101 is installed on the upper side of the cargo box cover 301. The water tank 102 and the water pump 103 are placed between the cab 100 and the cargo box, and the water pump 103 and the water pipe supply water to the sprayer 101. The water pipe may not run along the cargo box. At the movable connection between the cover 301 and the box body, the water pipe has a slack, and a relatively flexible water pipe can be used to allow the cover 301 to tilt.

[0054] When unloading coal, the staff presses the start button of the spray dust suppression device. Water is supplied to the three sprayers 101 by the water storage tank 102, the water pump 103, and the water pipe. The three sprayers 101 spray water mist into the unloading port formed when the rear plate 406 is opened. When the water mist comes into contact with and collides with the coal ash particles, the coal ash particles stick together, agglomerate and become larger, and settle under their own gravity, thereby achieving the effect of suppressing coal ash.

[0055] When a dump truck is used for coal transportation, its main operating states are loading coal, transporting coal, and unloading coal. When loading coal, the cargo box cover is open, and the other panels are closed. When transporting coal, the cover is closed, and the cargo box is sealed. When unloading coal, the rear panel of the cargo box opens, and the coal is poured out from the rear of the cargo box, while the other panels remain closed. This dump truck effectively solves the problem of coal sticking to the bottom during unloading and prevents coal dust from flying and polluting the environment during coal transportation and unloading.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dump truck cargo box with a removable bottom, characterized in that, The bottom of the cargo box is equipped with a scraper, which includes a scraping body located inside the cargo box and extending to the left and right, as well as two transmission connection ends on the left and right sides. The bottom of the left and right side panels of the cargo box are respectively provided with clearance channels for the left and right transmission connection ends of the scraper to extend out. The clearance channels extend in the front and back direction. The transmission connection ends of the scraper are connected to a de-adhesion drive mechanism. The de-adhesion drive mechanism is used to drive the scraper to move back and forth on the bottom surface inside the cargo box so that when unloading materials, the scraper moves from front to back to scrape off the materials at the bottom of the cargo box. An elastic sealing body is provided in the clearance channel. The elastic sealing body is used to deform under the pressure of the scraper when the scraper moves to form a clearance, and after the elastic deformation recovers, it blocks the clearance channel to block the materials.

2. The descaling dump truck cargo box with removable bottom as described in claim 1, characterized in that, The de-adhesion drive mechanism includes a lead screw and nut pair and a drive motor. The lead screw and nut pair has two sets to connect to the two transmission connection ends of the scraper respectively. The lead screw extends in the front-back direction and is located outside the clearance channel at the bottom of the side panel of the cargo box. The nut of the lead screw and nut pair is fixed to the scraper. The drive motor is used to drive the lead screw to rotate so that the rotational motion of the lead screw is converted into the linear motion of the nut, thereby driving the scraper to move back and forth.

3. The descaling dump truck cargo box with removable bottom as described in claim 2, characterized in that, The de-adhesion drive mechanism includes a drive shaft and a drive motor. The drive shaft is installed between the cab and the cargo box of the dump truck. The drive motor is connected to the middle of the drive shaft, and the two ends of the drive shaft are respectively connected to the screw drive of two sets of screw and nut pairs.

4. The descalable dump truck cargo box with removable bottom as described in claim 2 or 3, characterized in that, A cover is fixed to the bottom of the outer wall of the cargo box side panel, the cover covers the corresponding clearance channel and the screw and nut are located inside the cover.

5. The descaling dump truck cargo box with removable bottom as described in claim 4, characterized in that, The bottom of the casing has a downward-facing opening that extends in the front-to-back direction.

6. The descalable dump truck cargo box according to claim 1, 2, or 3, characterized in that, The scraper body is a scraper blade with a through-hole in the center. The scraper includes a push rod that passes through and is fixed in the hole. The two ends of the push rod protrude from the scraper blade to form two transmission connection ends of the scraper.

7. The descalable dump truck cargo box with removable bottom as described in claim 1, 2, or 3, characterized in that, The scraper body has a trapezoidal cross-section, with sloping front and rear sides and a top width smaller than the bottom width. The bottom surface of the scraper body is in contact with the bottom surface inside the cargo box.

8. The descalable dump truck cargo box with removable bottom according to claim 1, 2, or 3, characterized in that, The cargo compartment includes a cover plate on its top, one end of which is hinged to the body of the cargo compartment for opening and closing the cargo compartment when the relative bodies are tilted.

9. The descaling dump truck cargo box with removable bottom as described in claim 8, characterized in that, The cover has a state for obstructing the view above the cab during its flipping stroke.

10. The descalable dump truck cargo box according to claim 1, 2, or 3, characterized in that, The cargo compartment is equipped with a sprayer for dust suppression during material unloading.

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