Dumper top cover protection structure

Abstract

The utility model discloses a dump truck top cover protection structure, which relates to the technical field of dump truck top covers and comprises a truck hopper, mounting racks are symmetrically and fixedly mounted at the upper end of the truck hopper, and frames are symmetrically and fixedly mounted on the outer side of the truck hopper. By the adoption of the structure, the tarpaulin base layer is composed of the first plastic woven cloth and the second plastic woven cloth, the toughness and the tensile effect of the top cover tarpaulin can be guaranteed, meanwhile, the waterproof layer is made of the composite polyethylene plastic film, the waterproof effect of the top cover tarpaulin can be guaranteed, and the heat insulation layer made of the rock wool materials is adopted. The flame-retardant layer is made of a flame retardant, so that fire spreading can be slowed down in a fire disaster, and articles under the top cover tarpaulin can be protected from being damaged; the wear-resistant layer is made of wear-resistant materials such as polypropylene and is arranged on the inner side of the top cover tarpaulin to reduce wear, so that the overall protection performance of the top cover tarpaulin can be improved, and the service life of the top cover tarpaulin can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of dump truck top covers, and particularly relates to a protective structure for a dump truck top cover. Background Technique

[0002] The design of the protective structure for the dump truck top cover aims to improve safety during transportation, reduce cargo spillage, and meet environmental protection requirements. The system mainly consists of a track, driving power, driving medium, trolley assembly, and tarpaulin. The track is fixed on the upper part of the cargo box and serves as a guide rail for the front and rear movement of the trolley assembly; the driving power provides the power for the movement of the trolley assembly, and common ones include motor drive and hydraulic motor drive; the driving medium is responsible for transmitting the power to the trolley assembly, and common ones include chains and steel wire ropes; the trolley assembly is installed on the track and drives the tarpaulin support frame to move along the track to realize the opening and closing of the top cover.

[0003] Chinese Patent with Publication No. CN213292126U discloses a new type of top cover muck dump truck, including the front end of the carriage, two carriage side plates, the rear end of the carriage, a tarpaulin top cover, longitudinal slide rails installed on the upper sides of each carriage side plate, a trolley slidably arranged in the longitudinal slide rails, and a driving motor for driving the trolley to slide along the longitudinal slide rails. The tarpaulin top cover includes a torsion roller installed at the front end of the carriage, a tarpaulin, and a rear support mechanism connected to the trolley. A rotary torsion spring is arranged inside the torsion roller. Two ends of the tarpaulin are respectively connected to the outer peripheral surface of the torsion roller and the rear support mechanism. Two ends of the longitudinal slide rails respectively extend to the front end and the rear end of the carriage.

[0004] Currently, in the use of the protective structure for the dump truck top cover in the prior art, we still find that there are still some deficiencies. For example, the canvas structure of the tarpaulin of the dump truck top cover is usually relatively single, and the performance and protection effect are still poor. Secondly, the folding and opening / closing of the top cover are mainly driven by drive chains on both sides of the hopper. In actual use, the chains are engaged with the sprockets on both sides of the hopper, and the span of the chains is relatively large, resulting in poor stability, high noise, easy wear, and easy detachment, which easily affects the stability of the tarpaulin top cover. Moreover, the frame of the protective top cover is connected to the chains on both sides of the hopper, and the chains are driven by the same drive assembly. The drive assembly is exposed outside the hopper as a whole, and is easily knocked, and dust, water, etc. can enter, thereby affecting the opening and closing of the top cover. Content of the Utility Model

[0005] Aiming at the problems mentioned in the background technique, the purpose of the utility model is to provide a protective structure for a dump truck top cover to solve the problems mentioned in the above background technique.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] Dump truck top cover protection structure, including a car body, symmetrically fixed mounting brackets are installed at the upper end of the car body, frames are symmetrically fixed on the outer side of the car body, a protection box is fixed on the outer side of the car body, a protection cover is rotatably connected to the lower end of the protection box, a clamping sleeve is fixedly installed on the outer side of the upper end of the protection cover, the upper end of the protection box is clamped with the clamping sleeve through a fixing mechanism, a driving mechanism is arranged inside the protection box, a top cover tarpaulin is fixedly installed on the outer side of the mounting bracket on the right half of the upper end of the car body, and the other end of the top cover tarpaulin is fixedly installed with the driving mechanism;

[0008] The driving mechanism includes a rotating rod and a screw rod. The screw rod is rotatably connected inside the frame. The same driving frame is threadedly connected to the outer side of the screw rod. A number of auxiliary frames are equidistantly arranged at the lower end of the top cover tarpaulin. Slide rods are symmetrically fixedly installed between the opposite surfaces of the mounting brackets. The ends of the driving frame and the auxiliary frames are slidably connected to the outer sides of the slide rods. The rotating rod is rotatably connected inside the protection box. A first bevel gear is fixedly installed on the outer side of the rotating rod. One end of the screw rod extends into the protection box and is fixedly installed with a second bevel gear. The first bevel gears at both ends of the rotating rod are meshed with the second bevel gear. A driving motor is fixedly installed at the lower end of the protection box. The output end of the driving motor extends into the protection box and is fixedly installed with a third bevel gear. The third bevel gear at the output end of the driving motor is meshed with the first bevel gear in the middle of the rotating rod;

[0009] The fixing mechanism includes a mounting block. The mounting block is fixedly installed at the upper end of the protection box. An installation cavity is opened inside the mounting block. A pull plate is slidably connected inside the installation cavity. A clamping block is fixedly installed on one side of the pull plate. The clamping end of the clamping block slidably penetrates the cavity wall of the installation cavity and is clamped with the clamping sleeve. Pull rods are symmetrically fixedly installed on the side of the pull plate away from the clamping block. The ends of the pull rods away from the pull plate slidably penetrate the cavity wall of the installation cavity and are fixedly installed with pull blocks. Springs are sleeved on the ends of the pull rods close to the pull plate;

[0010] The top cover tarpaulin includes a waterproof layer, a heat insulation layer, a flame retardant layer, a tarpaulin base layer and a wear-resistant layer. The heat insulation layer is arranged between the waterproof layer and the flame retardant layer. The tarpaulin base layer is arranged between the wear-resistant layer and the flame retardant layer.

[0011] As a preferred technical solution, sliding grooves are symmetrically opened inside the installation cavity. The ends of the pull plate are slidably connected inside the sliding grooves.

[0012] As a preferred technical solution, the shape of the mounting block is L-shaped, and the right side of the clamping end of the clamping block is beveled.

[0013] As a preferred technical solution, a screw sleeve is fixedly installed inside the lower end of the driving frame. The driving frame is threadedly connected to the outer side of the screw rod through the screw sleeve.

[0014] As a preferred technical solution, sliding holes are symmetrically formed on the inner sides of the active frame and the auxiliary frame, and the active frame and the auxiliary frame are both slidably connected to the outer side of the sliding rod through the sliding holes.

[0015] In summary, the present utility model mainly has the following beneficial effects:

[0016] First, the tarp base layer is composed of the first plastic woven fabric and the second plastic woven fabric, which can ensure the toughness and tensile effect of the top cover tarp. At the same time, the waterproof layer uses a composite polyethylene plastic film, which can ensure the waterproof effect of the top cover tarp. Secondly, the heat insulation layer made of rock wool materials can block ultraviolet rays and heat energy in sunlight, and the flame retardant layer is made of flame retardants and can slow down the spread of fire in case of fire, protecting the items under the top cover tarp from damage; the wear-resistant layer is made of wear-resistant materials such as polypropylene and is arranged on the inner side of the top cover tarp to reduce wear, thereby improving the overall protection performance and service life of the top cover tarp;

[0017] Second, a screw is used to replace the chain drive in the drive structure, which is not prone to the problem of chain shaking, and the stable effect of the top cover tarp is better during transmission. At the same time, sliding rods are symmetrically arranged at the upper end and both sides of the U-shaped mounting frame, which can greatly improve the stability of the main frame body and the auxiliary frame. In addition, the main part of the drive mechanism of the top cover tarp is installed in a protective box with a protective cover, which can effectively prevent the drive mechanism of the top cover tarp from being externally bumped and corroded and aged due to dust and water ingress. In addition, the protective box is snap-fitted and fixed through a fixing mechanism and a snap sleeve on the protective cover, which is convenient for switching, maintenance and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic diagram of the internal structure of the protective box of the present utility model;

[0020] Figure 3 is a schematic diagram of the connection between the active frame and the screw of the present utility model;

[0021] Figure 4 is a schematic diagram of the internal structure of the mounting block of the present utility model;

[0022] Figure 5 is a partial cross-sectional view of the top cover tarp of the present utility model.

[0023] Reference Signs: 1, hopper; 2, mounting bracket; 3, top cover tarpaulin; 301, waterproof layer; 302, heat insulation layer; 303, flame retardant layer; 304, tarpaulin base layer; 305, wear-resistant layer; 4, protective box; 5, fixing mechanism; 501, mounting block; 502, mounting cavity; 503, pulling block; 504, pull rod; 505, spring; 506, clamping block; 507, pulling plate; 6, ferrule; 7, driving mechanism; 701, driving motor; 703, rotating rod; 704, first bevel gear; 705, second bevel gear; 706, driving frame; 707, screw; 708, third bevel gear; 8, protective cover; 9, frame; 10, auxiliary frame; 11, chute; 12, screw sleeve; 13, slide bar; 14, slide hole. Detailed Implementation Manner

[0024] Refer to Figures 1 to 5 , for the self-unloading truck top cover protection structure described in this embodiment, it includes a hopper 1, mounting brackets 2 are symmetrically and fixedly installed at the upper end of the hopper 1, a frame 9 is symmetrically and fixedly installed on the outer side of the hopper 1, a protective box 4 is fixedly installed on the outer side of the hopper 1, a protective cover 8 is rotatably connected to the lower end of the protective box 4, a ferrule 6 is fixedly installed on the outer side of the upper end of the protective cover 8, the upper end of the protective box 4 is clamped with the ferrule 6 through a fixing mechanism 5, a driving mechanism 7 is arranged inside the protective box 4, and a top cover tarpaulin 3 is fixedly installed on the outer side of the mounting bracket 2 at the right half of the upper end of the hopper 1, and the other end of the top cover tarpaulin 3 is fixedly installed with the driving mechanism 7; by installing the protective box 4 on the hopper 1 and installing the driving mechanism 7 of the top cover tarpaulin 3 inside the protective box 4, it can effectively prevent the driving mechanism 7 of the top cover tarpaulin 3 from being externally bumped and corroded and aged due to dust and water ingress. In addition, the protective box 4 is clamped and fixed with the ferrule 6 on the protective cover 8 through the fixing mechanism 5, which is convenient for opening, closing, maintenance;

[0025] The driving mechanism 7 includes a rotating rod 703 and a screw rod 707. The screw rod 707 is rotatably connected to the inside of the frame 9. The same driving frame 706 is threadedly connected to the outside of the screw rod 707. A number of auxiliary frames 10 are equidistantly arranged at the lower end of the top cover tarpaulin 3. Slide rods 13 are symmetrically and fixedly installed between the opposite surfaces of the mounting frame 2. The ends of the driving frame 706 and the auxiliary frames 10 are both slidably connected to the outside of the slide rods 13. The rotating rod 703 is rotatably connected to the inside of the protection box 4. A first bevel gear 704 is fixedly installed on the outside of the rotating rod 703. One end of the screw rod 707 extends into the protection box 4 and a second bevel gear 705 is fixedly installed. The first bevel gear 704 at both ends of the rotating rod 703 and the second bevel gear 705 are meshed and connected. A driving motor 701 is fixedly installed at the lower end of the protection box 4. The output end of the driving motor 701 extends into the protection box 4 and a third bevel gear 708 is fixedly installed. The third bevel gear 708 at the output end of the driving motor 701 and the first bevel gear 704 in the middle of the rotating rod 703 are meshed and connected. By using the third bevel gear 708 at the output end of the driving motor 701 to meshingly drive the first bevel gear 704 on the outside of the middle of the rotating rod 703, the rotating rod 703 can rotate inside the protection box 4. At the same time, the first bevel gear 704 at both ends of the rotating rod 703 meshingly drives the second bevel gear 705, so that the screw rod 707 connected to the second bevel gear 705 can rotate inside the frame 9. Due to the rotation of the screw rod 707, the driving frame 706 threadedly connected to the outside moves, and the driving frame 706 pulls one end of the top cover tarpaulin 3 to move. And with the auxiliary frames 10 equidistantly arranged at the lower end of the top cover tarpaulin 3, it is convenient to open and close the top cover tarpaulin 3. In this driving structure, the screw rod 707 is used instead of chain drive, and it is not easy to have the problem of chain shaking. And in terms of transmission use, the stability effect of the top cover tarpaulin 3 is better. At the same time, slide rods 13 are symmetrically arranged at the upper end and both sides of the U-shaped mounting frame 2, which can greatly improve the stability of the main frame body and the auxiliary frames 10;

[0026] The fixing mechanism 5 includes a mounting block 501, which is fixedly installed at the upper end of the protective box 4. An installation cavity 502 is provided inside the mounting block 501. A pull plate 507 is slidably connected to the inside of the installation cavity 502. A clamping block 506 is fixedly installed on one side of the pull plate 507. The clamping end of the clamping block 506 slidably penetrates the cavity wall of the installation cavity 502 and is clamped with the clamping sleeve 6. On the side of the pull plate 507 away from the clamping block 506, pull rods 504 are symmetrically and fixedly installed. One end of the pull rod 504 away from the pull plate 507 slidably penetrates the cavity wall of the installation cavity 502 and is fixedly installed with a pull block 503. A spring 505 is sleeved on the end of the pull rod 504 close to the pull plate 507. When closing the protective cover 8 and the protective box 4, the lower end of the protective cover 8 rotates at the lower end of the protective box 4 through a hinge. Through the flipping and extrusion of the protective cover 8, the clamping sleeve 6 on the protective cover 8 extrudes the inclined surface of the clamping block 506 at the mounting block 501 of the protective box 4. At the same time, the pull plate 507 connected to the clamping block 506 slides inside the installation cavity 502 and compresses the spring 505. When the clamping end of the clamping block 506 corresponds to the socket of the clamping sleeve 6, the spring 505 resets and pushes the clamping block 506 connected to the pull plate 507 to be clamped into the clamping sleeve 6 for fixation. When opening, the pull block 503 is used to pull the pull rod 504, so that the pull plate 507 connected to the pull rod 504 drives the clamping block 506 to separate from the clamping sleeve 6, and then the protective cover 8 can be flipped to open it, thus facilitating the opening and closing operation of the protective cover 8 on the protective box 4;

[0027] The top cover tarpaulin 3 includes a waterproof layer 301, a heat insulation layer 302, a flame retardant layer 303, a tarpaulin base layer 304 and a wear-resistant layer 305. The heat insulation layer 302 is arranged between the waterproof layer 301 and the flame retardant layer 303. The tarpaulin base layer 304 is arranged between the wear-resistant layer 305 and the flame retardant layer 303. The tarpaulin base layer 304 is composed of a first plastic woven cloth and a second plastic woven cloth, which can ensure the toughness and tensile effect of the top cover tarpaulin 3. At the same time, the waterproof layer 301 adopts a composite polyethylene plastic film, which can ensure the waterproof effect of the top cover tarpaulin 3. Secondly, the heat insulation layer 302 made of rock wool material can block ultraviolet rays and heat energy in sunlight, while the flame retardant layer 303 is made of a flame retardant and can slow down the spread of fire in a fire, protecting the items under the top cover tarpaulin 3 from damage; the wear-resistant layer 305 is made of wear-resistant materials such as polypropylene and is arranged on the inner side of the top cover tarpaulin 3 to reduce wear, so as to improve the overall protection performance and service life of the top cover tarpaulin 3; on the side of the waterproof layer 301 away from the heat insulation layer 302, an anti-aging coating is also provided to extend the service life of the top cover tarpaulin 3.

[0028] Reference Figure 4 , symmetric sliding grooves 11 are provided inside the installation cavity 502. The end of the pull plate 507 is slidably connected to the inside of the sliding grooves 11. By sliding the pull plate 507 at the sliding grooves 11 inside the installation cavity 502, the stability of the pull plate 507 moving in the installation groove can be improved.

[0029] ReferenceFigure 4 , the installation block 501 is L-shaped, and the right side of the insertion end of the clamping block 506 is beveled. By using the beveled part of the insertion end of the clamping block 506, when closing the protective cover 8, the card sleeve 6 on the protective cover 8 can be easily squeezed along the beveled part of the clamping block 506, thus facilitating the closing of the protective cover 8 on the protective box 4.

[0030] Reference Figure 3 , a screw sleeve 12 is fixedly installed inside the lower end of the active frame 706. The active frame 706 is threadedly connected to the outside of the screw rod 707 through the screw sleeve 12. By using the screw sleeve 12 at the lower end of the active frame 706, the threaded connection between the active frame 706 and the screw rod 707 can be facilitated.

[0031] Reference Figure 3 , sliding holes 14 are symmetrically formed inside the active frame 706 and the auxiliary frame 10. The active frame 706 and the auxiliary frame 10 are both slidably connected to the outside of the sliding rod 13 through the sliding holes 14. By using the sliding holes 14 on the active frame 706 and the auxiliary frame 10, the sliding of the active frame 706 and the auxiliary frame 10 on the outside of the sliding rod 13 can be facilitated.

[0032] Usage principle and advantages: During use, the top cover tarpaulin 3 is composed of a first plastic woven fabric and a second plastic woven fabric to form a tarpaulin base layer 304, which can ensure the toughness and tensile effect of the top cover tarpaulin 3. At the same time, the waterproof layer 301 uses a composite polyethylene plastic film to ensure the waterproof effect of the top cover tarpaulin 3. Secondly, the heat insulation layer 302 made of rock wool material can block ultraviolet rays and heat energy in sunlight, and the flame retardant layer 303 made of a flame retardant can slow down the spread of fire in case of a fire and protect the items under the top cover tarpaulin 3 from damage; the wear-resistant layer 305 is made of wear-resistant materials such as polypropylene and is provided inside the top cover tarpaulin 3 to reduce wear;

[0033] During use, the third bevel gear 708 at the output end of the drive motor 701 is engaged to drive the first bevel gear 704 on the outer side of the middle part of the rotating rod 703, so that the rotating rod 703 can rotate inside the protective box 4. At the same time, the first bevel gears 704 at both ends of the rotating rod 703 are engaged to drive the second bevel gears 705, so that the screw rod 707 connected to the second bevel gear 705 can rotate inside the frame 9. Due to the rotation of the screw rod 707, the active frame 706 connected by the outer thread moves, and the active frame 706 pulls one end of the top cover tarpaulin 3 to move. And with the auxiliary frames 10 at equal intervals at the lower end of the top cover tarpaulin 3, it is convenient to open and close the top cover tarpaulin 3. When closing the protective cover 8 and the protective box 4, the lower end of the protective cover 8 rotates at the lower end of the protective box 4 through the hinge, and the protective cover 8 is squeezed by flipping, so that the card sleeve 6 on the protective cover 8 squeezes the inclined surface of the card block 506 at the mounting block 501 of the protective box 4. At the same time, the pull plate 507 connected to the card block 506 slides inside the mounting cavity 502 and compresses the spring 505. When the insertion end of the card block 506 corresponds to the slot of the card sleeve 6, the spring 505 resets and pushes the card block 506 connected to the pull plate 507 to be inserted into the card sleeve 6 for fixation. When opening, the pull block 503 is used to pull the pull rod 504, so that the pull plate 507 connected to the pull rod 504 drives the card block 506 to separate from the card sleeve 6, and then the protective cover 8 can be flipped to open it.

Claims

1. The protective structure of the dump truck top cover, characterized in that, It includes a car body (1), on the upper end of which mounting brackets (2) are symmetrically and fixedly installed. On the outer side of the car body (1), frames (9) are symmetrically and fixedly installed. On the outer side of the car body (1), a protective box (4) is fixedly installed. At the lower end of the protective box (4), a protective cover (8) is rotatably connected. On the outer side of the upper end of the protective cover (8), a clamping sleeve (6) is fixedly installed. The upper end of the protective box (4) is clamped with the clamping sleeve (6) through a fixing mechanism (5). Inside the protective box (4), a driving mechanism (7) is provided. On the outer side of the mounting bracket (2) on the right half of the upper end of the car body (1), a top cover tarpaulin (3) is fixedly installed. The other end of the top cover tarpaulin (3) is fixedly installed with the driving mechanism (7). The top cover tarpaulin (3) includes a waterproof layer (301), a heat insulation layer (302), a flame retardant layer (303), a tarpaulin base layer (304) and a wear-resistant layer (305). The heat insulation layer (302) is arranged between the waterproof layer (301) and the flame retardant layer (303). The tarpaulin base layer (304) is arranged between the wear-resistant layer (305) and the flame retardant layer (303).

2. The protective structure for the dump truck top cover according to claim 1, wherein: The driving mechanism (7) includes a rotating rod (703) and a screw rod (707). The screw rod (707) is rotatably connected inside the frame (9). On the outer side of the screw rod (707), the same driving frame (706) is threadedly connected. At equal intervals at the lower end of the top cover tarpaulin (3), a number of auxiliary frames (10) are provided. Between the opposite faces of the mounting brackets (2), sliding rods (13) are symmetrically and fixedly installed. The ends of the driving frame (706) and the auxiliary frames (10) are all slidably connected to the outer side of the sliding rod (13). The rotating rod (703) is rotatably connected inside the protective box (4). On the outer side of the rotating rod (703), a first bevel gear (704) is fixedly installed. One end of the screw rod (707) extends into the protective box (4) and a second bevel gear (705) is fixedly installed. The first bevel gear (704) and the second bevel gear (705) at both ends of the rotating rod (703) are meshed and connected. At the lower end of the protective box (4), a driving motor (701) is fixedly installed. The output end of the driving motor (701) extends into the protective box (4) and a third bevel gear (708) is fixedly installed. The third bevel gear (708) at the output end of the driving motor (701) is meshed with the first bevel gear (704) in the middle of the rotating rod (703).

3. The protective structure for the dump truck top cover according to claim 2, characterized in that: Inside the lower end of the driving frame (706), a screw sleeve (12) is fixedly installed. The driving frame (706) is threadedly connected to the outer side of the screw rod (707) through the screw sleeve (12).

4. The protective structure for the dump truck top cover according to claim 2, characterized in that: Inside the driving frame (706) and the auxiliary frames (10), sliding holes (14) are symmetrically opened. The driving frame (706) and the auxiliary frames (10) are both slidably connected to the outer side of the sliding rod (13) through the sliding holes (14).

5. The protective structure for the tipping truck top cover according to claim 1, characterized in that: The fixing mechanism (5) includes a mounting block (501), the mounting block (501) is fixedly installed at the upper end of the protective box (4), an installation cavity (502) is formed inside the mounting block (501), a pull plate (507) is slidably connected inside the installation cavity (502), a clamping block (506) is fixedly installed on one side of the pull plate (507), the clamping end of the clamping block (506) slidably penetrates the cavity wall of the installation cavity (502) and is clamped with the clamping sleeve (6), pull rods (504) are symmetrically and fixedly installed on the side of the pull plate (507) away from the clamping block (506), the end of the pull rod (504) away from the pull plate (507) slidably penetrates the cavity wall of the installation cavity (502) and is fixedly installed with a pull block (503), and a spring (505) is sleeved on the end of the pull rod (504) close to the pull plate (507).

6. The protective structure for the tipping truck top cover according to claim 5, characterized in that: Chutes (11) are symmetrically formed inside the installation cavity (502), and the end of the pull plate (507) is slidably connected inside the chutes (11).

7. The protective structure for the dump truck top cover according to claim 5, characterized in that: The shape of the mounting block (501) is L-shaped, and the right side of the clamping end of the clamping block (506) is beveled.

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