阅读说明：本技术 一种自卸车及其防倾翻系统 (Dumper and anti-tipping system thereof ) 是由 袁继秀 于 2021-03-03 设计创作，主要内容包括：本发明公开一种自卸车及其防倾翻系统,自卸车包括底盘,所述底盘上设有驾驶室和车厢,车厢与底盘之间转动连接,底盘上设有用于控制自卸车车厢翻转的第一控制件,车厢上转动设有高度可调的后门,车厢上固定有用于控制后门开关的第二控制件,车厢上滑动设有车罩,车厢上固定有用于控制车罩升降的第三控制件,车罩上滑动设有可拆卸的运载件,车罩上固定有用于控制运载件滑动的第四控制件,车罩上滑动设有设有第一限位件。本发明自卸车,通过设置可拆卸的运载件,通过第四控制件控制运载件在车厢内移动,实现了自动化上料,节约了人力和装载效率,通过第二控制件控制后门开关,解决了传统自卸车因后门过重且过高造成的闭合费力的问题。(The invention discloses a dump truck and an anti-tipping system thereof, wherein the dump truck comprises a chassis, a cab and a carriage are arranged on the chassis, the carriage is rotationally connected with the chassis, a first control part for controlling the tipping of the carriage of the dump truck is arranged on the chassis, a rear door with adjustable height is rotationally arranged on the carriage, a second control part for controlling the opening and closing of the rear door is fixed on the carriage, a truck cover is slidably arranged on the carriage, a third control part for controlling the lifting of the truck cover is fixed on the carriage, a detachable carrying part is slidably arranged on the truck cover, a fourth control part for controlling the sliding of the carrying part is fixed on the truck cover, and a first limiting part is slidably arranged on the truck cover. According to the dump truck, the detachable carrying piece is arranged, the fourth control piece is used for controlling the carrying piece to move in the carriage, automatic feeding is achieved, manpower and loading efficiency are saved, the second control piece is used for controlling the rear door to be opened and closed, and the problem that the conventional dump truck is hard to close due to the fact that the rear door is too heavy and too high is solved.)

1. A dump truck comprises a chassis (1) and is characterized in that a cab (2) and a carriage (3) are arranged on the chassis (1), the carriage (3) is rotatably connected with the chassis (1), a first control piece (4) used for controlling the carriage (3) of the dump truck to overturn is arranged on the chassis (1), a rear door (5) with adjustable height is rotatably arranged on the carriage (3), a second control piece (6) used for controlling the opening and closing of the rear door is fixed on the carriage (3), a truck cover (7) is slidably arranged on the carriage (3), a third control piece (8) used for controlling the lifting of the truck cover (7) is fixed on the carriage (3), a detachable carrying piece (9) is slidably arranged on the truck cover (7), a fourth control piece (10) used for controlling the sliding of the carrying piece (9) is fixed on the truck cover (7), and a first limiting piece (20) is slidably arranged on the truck cover (7);

the material carrying part (9) comprises an elevator (91), a second sliding block which is symmetrically distributed is fixed above the elevator (91), a supporting plate which is symmetrically distributed is arranged below the second sliding block, a connecting block is arranged between the second sliding blocks, an installing knob (92) is arranged on the connecting block in a rotating mode, limiting holes which are distributed in an array mode are formed in the connecting block, a material carrying barrel (93) is arranged between the supporting plates, the material carrying barrel (93) is located on the supporting plate to rotate, and a fifth control part (94) used for controlling the material carrying barrel (93) to overturn is fixed on the elevator (91).

2. The dump truck according to claim 1, wherein the carriage (3) comprises a carriage body (31), support beams (32) are fixed below the carriage body (31) and symmetrically distributed, a first rotating shaft (34) rotatably connected with the chassis (2) is arranged on each support beam (32), first sliding blocks (33) are arranged on the outer walls of two sides of the carriage body (31) in an array distribution, and slots are arranged above the carriage (3) and close to the rear door (5).

3. The dump truck according to claim 1, characterized in that the first control member (4) comprises a first hinge member (41) which is positioned on the chassis (1) and rotates and a second hinge member (42) which is positioned at the bottom of the carriage (3) and rotates, the first hinge member (41) and the second hinge member (42) are rotatably connected, a first hydraulic cylinder (43) is rotatably arranged on the chassis (1), and an output shaft of the first hydraulic cylinder (43) is rotatably connected with the first hinge member (41).

4. The dump truck according to claim 2, characterized in that the rear door (5) comprises a U-shaped bracket (51), the U-shaped bracket (51) is positioned on the carriage (3) to rotate, the U-shaped bracket (51) is provided with symmetrically distributed vertical brackets (52) in a sliding manner, first cylinders are symmetrically distributed and fixed inside the U-shaped bracket (51), output shafts of the first cylinders are fixed on the vertical brackets (52), a telescopic plate is arranged between the vertical brackets (52), the upper part of the telescopic plate is fixed on the vertical brackets (52), the lower part of the telescopic plate is fixed on the U-shaped bracket (51), a locking piece (55) is fixed on one side of the U-shaped bracket (51) close to the cab (2), and when the rear door (5) is closed, the locking piece (55) is positioned above the insertion slot;

the telescopic plate comprises first combination plates (53) distributed in an array manner and second combination plates (54) distributed in an array manner, the first combination plates (53) and the second combination plates (54) are distributed in a staggered manner, and the first combination plates (53) are connected with the adjacent second combination plates (54) in a sliding manner;

the locking piece (55) comprises a cavity (551), an electromagnetic coil (552) is fixed on the inner wall of the cavity (551), a plug pin (553) is arranged in the cavity (551) in a sliding mode, a magnetic block (554) is fixed above the plug pin (553), and the plug pin (553) penetrates out of the lower portion of the cavity (551) and is inserted into the slot to lock the rear door (5).

5. The dump truck according to claim 2, wherein the second control member (6) comprises a second cylinder (61) fixed below the carriage body (31), a driving plate (62) is rotatably arranged on an output shaft of the second cylinder (61), a rotating member (63) is rotatably arranged on the carriage body (31), the rotating member (63) is slidably connected with the driving plate (62), when the rotating member (63) is perpendicular to the bottom of the carriage (3), the driving plate (62) is parallel to the bottom of the carriage (3), and when the rotating member (63) is rotated to be parallel to the bottom of the carriage (3), the surface of the driving plate (62) is overlapped with the surface of the rear door (5).

6. The dump truck according to claim 2, characterized in that the truck cover (7) comprises a cover body (71), one end of the cover body (71) close to the cab (2) is closed, limiting plates (72) are fixed below the cover body (71) and are symmetrically distributed, first sliding rails (73) distributed in an array are arranged between the limiting plates (72) and the top of the cover body (71), the first sliding rails (73) are fixed on the inner wall of the cover body (71), one end of the cover body (71) far away from the cab (2) is provided with a first connecting plate (74), one end of the first connecting plate (74) far away from the cover body (71) is provided with a groove (75), second sliding rails (76) are arranged in the groove (75) and are symmetrically distributed, the truck cover (7) is matched with the first sliding block (33) through the first sliding rails (73) to be located on the carriage (3) to slide, and the carrying piece (9) is matched with the second sliding rails (76) to be located on the truck cover (7) to slide.

7. A dump truck according to claim 6, characterized in that the third control (8) comprises a second hydraulic cylinder fixed to the car (3), the output shaft of the second hydraulic cylinder being fixed to the cover (71).

8. The dump truck according to claim 1, wherein the mounting knob (92) comprises a first knob (921), a clamping piece (922) is arranged on the first knob (921) in a sliding manner, a second knob (923) used for controlling the sliding of the clamping piece (922) is arranged on the first knob (921) in a rotating manner, and the second knob (923) is in threaded connection with the clamping piece (922);

the first knob (921) comprises a third rotating shaft (9211) which is positioned on the connecting block and rotates, a first driving block (9212) is fixed at one end of the third rotating shaft (9211), a first limiting block (9213) is fixed at the other end of the third rotating shaft, a threaded hole (9214) which is coaxial with the third rotating shaft (9211) is formed in the first driving block (9212), the threaded hole (9214) penetrates through the first driving block (9212), and a sliding cavity is formed in the first driving block (9212);

the clamping piece (922) comprises a third sliding block (9222) which is located in the sliding cavity and slides, a clamping block (9221) is arranged on one side, close to the third rotating shaft (9211), of the third sliding block (9222), the clamping block (9221) penetrates through the first driving block (9212) and is clamped in the limiting hole to fix the first knob (921), a rotating cavity is formed in the clamping block (9221), and internal threads are formed in the inner wall of the rotating cavity;

the second knob (923) comprises a rotating block (9235) which is positioned in the rotating cavity and rotates, external threads are arranged on the rotating block (9235), a mounting shaft (9233) is arranged on one side, far away from the third rotating shaft (9211), of the rotating block (923), the mounting shaft (9233) penetrates through the third sliding block (9222) and is provided with a fourth rotating shaft (9231) which is rotatably connected with the first knob (921), second limiting blocks (9234) which are symmetrically distributed are arranged on the fourth rotating shaft (9231), and a second driving block (9232) is fixed on the fourth rotating shaft (9231) which penetrates through the first driving block (9212);

the material carrying barrel (93) comprises a barrel body, two ends of the barrel body are respectively provided with a second rotating shaft, the barrel body is positioned on the supporting plate through the second rotating shafts to rotate, and a gear is fixed on the second rotating shaft at one end;

the fifth control part (94) comprises a third cylinder, the third cylinder is fixed below the elevator (91), and a rack meshed with the gear is fixed on an output shaft of the third cylinder;

the fourth control piece (10) comprises a motor fixed on the vehicle cover (7), and a screw rod matched with the threaded hole (9214) is fixed on an output shaft of the motor.

9. The dump truck according to claim 6, wherein the first limiting member (20) comprises a baffle (201) positioned in the groove (75), sliding shafts (202) are symmetrically distributed above the baffle (201), and the sliding shafts (202) penetrate through the first connecting plate (74) to be fixed with third limiting members (203).

10. The tipping prevention system of the dump truck as claimed in claim 2, wherein the tipping prevention system comprises a first sector (30) fixed on one side of a first rotating shaft (34), the first sector (30) is coaxial with the first rotating shaft (34), a pressure sensor (40) is fixed below the first sector (30), a support member (50) with an adjustable angle is arranged on the chassis (1), a controller connected with the pressure sensor is arranged in the cab (2), and an alarm is connected to the controller;

in the self-discharging process of the dump truck, when the carriage (3) rotates to be in contact with the support piece (50), the first fan-shaped block (30) can extrude the support piece (50), the pressure value is transmitted to a controller in the cab (2) through the pressure sensor (40), and if the pressure value is larger than a threshold value set by the controller, an alarm is triggered to give an alarm;

the supporting piece (50) comprises a fifth rotating shaft (501) which is positioned on the chassis (1) and rotates, one end of the fifth rotating shaft (501) is provided with a second fan-shaped block (502) which is used for supporting the first fan-shaped block (30), the other end of the fifth rotating shaft is provided with a limiting shaft, the limiting shaft is provided with second clamping grooves (503) which are distributed in an array manner, one end of the limiting shaft, which is far away from the fifth rotating shaft (501), is provided with a third driving block (504), and the second fan-shaped block (502) and the fifth rotating shaft (501) are coaxial with the first rotating shaft (34);

the upper portion of the limiting shaft is provided with a second limiting part (60), the second limiting part (60) is connected with the chassis (1) in a sliding mode, the second limiting part (60) comprises a sliding rod (601) which is located on the chassis (1) in a sliding mode, the sliding rod (601) is provided with a fourth limiting part (603) which is symmetrically distributed, a second clamping block (602) matched with the second clamping groove (503) is arranged below the sliding rod (601), and under the action of gravity, the second clamping block (602) is inserted into the corresponding second clamping groove (503) to fix the supporting part (50).

Technical Field

The invention relates to a dumper, in particular to a dumper and an anti-tipping system thereof.

Background

The dump truck refers to a vehicle which can unload cargos by hydraulic or mechanical lifting, and is also called a dump truck. The hydraulic lifting device consists of an automobile chassis, a hydraulic lifting mechanism, a cargo compartment, a power take-off device and the like. The dumper controls the piston rod to move through the operating system to push the piston rod to tip the carriage, and the dumper is usually combined with engineering machinery such as an excavator, a loader, a belt conveyor and the like in civil engineering to form a loading, transporting and unloading production line for loading, unloading and transporting earthwork, gravel and bulk materials.

The traditional self-dumping cars load goods through manpower, not only wastes manpower and have low loading efficiency, the problem of falling of materials easily appears during the carrying of the traditional self-dumping cars, the problem of dust raising easily appears during the carrying of granular materials such as sand and soil, and the self-dumping cars have the problem of hard closing because of the overweight and overhigh backdoors.

Disclosure of Invention

The invention aims to provide a dump truck and an anti-tipping system thereof, wherein a corner between a carriage and a chassis of the dump truck is controlled by a first control element, a liftable car cover is arranged, a rear door with adjustable height is arranged, the rear door can be ensured to be used as a carriage rear door and can shield the rear end of the car cover, the problem that the traditional dump truck is easy to fall off materials during carrying is solved, the problem of dust raising during carrying of granular materials such as sand and soil is solved, the detachable carrying element is arranged, the carrying element is controlled to move in the carriage by a fourth control element, automatic feeding is realized, manpower and loading efficiency are saved, and the problem that the traditional dump truck is hard to close due to overweight and overhigh rear door is solved by controlling the second control element to switch the rear door.

The purpose of the invention can be realized by the following technical scheme:

a cab and a carriage are arranged on the chassis, the carriage is rotatably connected with the chassis, a first control piece used for controlling the carriage of the dump truck to turn over is arranged on the chassis, a rear door with adjustable height is rotatably arranged on the carriage, a second control piece used for controlling the opening and closing of the rear door is fixed on the carriage, a truck cover is slidably arranged on the carriage, a third control piece used for controlling the lifting of the truck cover is fixed on the carriage, a detachable carrying piece is slidably arranged on the truck cover, a fourth control piece used for controlling the sliding of the carrying piece is fixed on the truck cover, and a first limiting piece is slidably arranged on the truck cover.

The carrying piece comprises an elevator, a second sliding block which is symmetrically distributed is fixed above the elevator, a supporting plate which is symmetrically distributed is arranged below the elevator, a connecting block is arranged between the second sliding blocks, an installing knob is arranged on the connecting block in a rotating mode, limiting holes which are distributed in an array mode are formed in the connecting block, a material carrying barrel is arranged between the supporting plates, the material carrying barrel is located in the supporting plate in a rotating mode, and a fifth control piece used for controlling the material carrying barrel to overturn is fixed on the elevator.

Further, the carriage includes the carriage body, and the below of carriage body is fixed with a supporting beam of symmetric distribution, is equipped with on the supporting beam and rotates the first pivot of being connected with the chassis, and the both sides outer wall of carriage body all is equipped with the first slider of array distribution, and the position that the top of carriage is close to the back door is equipped with the slot.

Furthermore, the first control piece comprises a first hinged piece and a second hinged piece, the first hinged piece is located on the chassis and rotates, the second hinged piece is located at the bottom of the carriage and rotates, the first hinged piece and the second hinged piece are connected in a rotating mode, a first hydraulic cylinder is arranged on the chassis in a rotating mode, and an output shaft of the first hydraulic cylinder is connected with the first hinged piece in a rotating mode.

Further, the back door includes U type support, U type support is located the carriage and rotates, the vertical support that slides on the U type support and be equipped with the symmetric distribution, the inside of U type support is fixed with the first cylinder of symmetric distribution, the output shaft of first cylinder is fixed on vertical support, be equipped with the expansion plate between the vertical support, the top of expansion plate is fixed on vertical support, the below is fixed on U type support, one side that U type support is close to the driver's cabin is fixed with the locking piece, when the back door was closed, the locking piece was located the top of slot.

The expansion plate comprises a first combined plate and a second combined plate, wherein the first combined plate is distributed in an array mode, the second combined plate is distributed in an array mode, the first combined plate and the second combined plate are distributed in a staggered mode, and the first combined plate and the second combined plate are connected in a sliding mode.

The locking piece comprises a cavity, an electromagnetic coil is fixed on the inner wall of the cavity, a bolt is arranged in the cavity in a sliding mode, a magnetic block is fixed above the bolt, and the bolt penetrates out of the lower portion of the cavity and is inserted into the slot to lock the rear door.

Further, the second control piece is including fixing the second cylinder in carriage body below, rotates on the output shaft of second cylinder and is equipped with the drive plate, rotates on the carriage body and is equipped with the rotation piece, rotates sliding connection between piece and the drive plate, and when the bottom that rotates the piece and the carriage was perpendicular, the drive plate was parallel with the bottom in carriage, and when rotating the piece and rotating to be parallel with the bottom in carriage, the surface of drive plate and the surperficial coincidence of back door.

Further, the car cover includes the cover body, the one end that the cover body is close to the driver's cabin is sealed, the below of the cover body is fixed with the limiting plate of symmetric distribution, be equipped with the first slide rail of array distribution between the top of limiting plate and the cover body, the inner wall at the cover body is fixed to first slide rail, the one end that the driver's cabin was kept away from to the cover body is equipped with first connecting plate, the one end of keeping away from the cover body of first connecting plate is equipped with the recess, establish the second slide rail that is equipped with symmetric distribution in the recess, the car cover slides on being located the carriage through first slide rail and first slider cooperation, the delivery piece slides on being located the car cover through second slider.

Furthermore, the third control part comprises a second hydraulic cylinder fixed on the carriage, and an output shaft of the second hydraulic cylinder is fixed on the cover body.

Furthermore, the installation knob includes first knob, and the slip is equipped with the fastener on the first knob, rotates on the first knob to be equipped with and is used for controlling the gliding second knob of fastener, threaded connection between second knob and the fastener.

The first knob rotates the third pivot including being located on the connecting block, and the one end of third pivot is fixed with first drive block, and the other end is fixed with first stopper, is equipped with the screw hole with third pivot coaxial line on the first drive block, and the screw hole runs through first drive block, and the inside of first drive block is equipped with the slip chamber.

The clamping piece comprises a third sliding block located in the sliding cavity and capable of sliding, a clamping block is arranged on one side, close to the third rotating shaft, of the third sliding block, the clamping block penetrates out of the first driving block to be clamped in the limiting hole to fix the first knob, a rotating cavity is formed in the clamping block, and an inner thread is formed in the inner wall of the rotating cavity.

The second knob is equipped with the external screw thread including being located the rotation intracavity pivoted turning block on the turning block, and the one side that the third pivot was kept away from to the turning block is equipped with the installation axle, and the installation axle is worn out the third slider and is equipped with the fourth pivot that first knob rotated the connection, is equipped with the second stopper of symmetric distribution in the fourth pivot, and first drive block is worn out in the fourth pivot and is fixed with the second drive block.

The material carrying barrel comprises a barrel body, second rotating shafts are arranged at two ends of the barrel body, the barrel body is located on the supporting plate through the second rotating shafts and rotates, and a gear is fixed on the second rotating shaft at one end.

The fifth control piece comprises a third cylinder, the third cylinder is fixed below the elevator, and a rack meshed with the gear is fixed on an output shaft of the third cylinder.

The fourth control piece comprises a motor fixed on the vehicle cover, and a screw matched with the threaded hole is fixed on an output shaft of the motor.

Furthermore, the first limiting part comprises a baffle positioned in the groove, sliding shafts are symmetrically distributed above the baffle, and the sliding shafts penetrate through the first connecting plate and are fixed with a third limiting part.

The utility model provides a tipper's anti-tilt system, anti-tilt system includes fixes the first sector at first pivot one side, and first sector is with first pivot coaxial line, and the below of first sector is fixed with pressure sensor, is equipped with angularly adjustable support piece on the chassis, is equipped with the controller of being connected with pressure sensor in the driver's cabin, is connected with the alarm on the controller.

In the self-discharging process of the dump truck, when the carriage rotates to be in contact with the supporting piece, the first fan-shaped block can extrude the supporting piece, the pressure value is transmitted to a controller in a cab through the pressure sensor, and if the pressure value is larger than a threshold value set by the controller, the alarm is triggered to give an alarm.

The supporting piece comprises a fifth rotating shaft which is positioned on the chassis and rotates, a second fan-shaped block used for supporting the first fan-shaped block is arranged at one end of the fifth rotating shaft, a limiting shaft is arranged at the other end of the fifth rotating shaft, second clamping grooves which are distributed in an array mode are arranged on the limiting shaft, a third driving block is arranged at one end, away from the fifth rotating shaft, of the limiting shaft, and the second fan-shaped block and the fifth rotating shaft are coaxial with the first rotating shaft.

The upper portion of the limiting shaft is provided with a second limiting part, the second limiting part is connected with the chassis in a sliding mode, the second limiting part comprises a sliding rod which is located on the chassis and slides, the sliding rod is provided with symmetrically distributed fourth limiting parts, a second clamping block matched with the second clamping groove is arranged below the sliding rod, and under the action of gravity, the second clamping block is inserted into the corresponding second clamping groove to fix the supporting piece.

The invention has the beneficial effects that:

1. according to the dumper, the corner between the carriage and the chassis of the dumper is controlled through the first control piece, the liftable dumper is provided with the dumper cover, the rear door can be guaranteed to serve as the carriage rear door and can shield the rear end of the dumper cover through the rear door with adjustable height, the problem that the traditional dumper is prone to falling of materials during carrying is solved, and the problem of dust raising during carrying of granular materials such as sand and soil is solved;

2. according to the dump truck, the detachable carrying piece is arranged, and the fourth control piece controls the carrying piece to move in the carriage, so that automatic feeding is realized, and the labor and the loading efficiency are saved;

3. according to the self-discharging vehicle, the switch of the rear door is controlled through the second control piece, so that the problem that the conventional self-discharging vehicle is hard to close due to the fact that the rear door is too heavy and too high is solved.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the dump truck of the present invention;

FIG. 2 is a schematic view of the dump truck of the present invention;

FIG. 3 is a schematic view of a partial structure of the dump truck of the present invention;

FIG. 4 is a cross-sectional view of the locking element of the present invention;

FIG. 5 is a schematic view of the vehicle cover construction of the present invention;

FIG. 6 is a schematic cross-sectional view of the mounting knob of the present invention;

fig. 7 is a schematic view of a part of the anti-rollover system according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A dumper comprises a chassis 1, as shown in fig. 1 and 2, a cab 2 and a carriage 3 are arranged on the chassis 1, the carriage 3 is rotatably connected with the chassis 1, a first control piece 4 used for controlling the carriage 3 of the dumper to turn over is arranged on the chassis 1, a rear door 5 with adjustable height is rotatably arranged on the carriage 3, a second control piece 6 used for controlling the opening and closing of the rear door is fixed on the carriage 3, a dumper cover 7 is slidably arranged on the carriage 3, a third control piece 8 used for controlling the lifting of the dumper cover 7 is fixed on the carriage 3, a detachable carrying piece 9 is slidably arranged on the dumper cover 7, a fourth control piece 10 used for controlling the sliding of the carrying piece 9 is fixed on the dumper cover 7, and a first limiting piece 20 is slidably arranged on the dumper cover 7.

The compartment 3 includes a compartment body 31, as shown in fig. 3, a support beam 32 is fixed below the compartment body 31 and symmetrically distributed, a first rotating shaft 34 rotatably connected with the chassis 2 is arranged on the support beam 32, first sliding blocks 33 distributed in an array manner are arranged on outer walls of two sides of the compartment body 31, and a slot is arranged above the compartment 3 and near the rear door 5.

The first control member 4 comprises a first hinge member 41 and a second hinge member 42, wherein the first hinge member 41 is positioned on the chassis 1 and rotates, the second hinge member 42 is positioned at the bottom of the carriage 3 and rotates, the first hinge member 41 and the second hinge member 42 are rotatably connected, a first hydraulic cylinder 43 is rotatably arranged on the chassis 1, and an output shaft of the first hydraulic cylinder 43 is rotatably connected with the first hinge member 41.

Rear door 5 includes U type support 51, U type support 51 is located carriage 3 and rotates, the vertical support 52 that sliding on U type support 51 was equipped with the symmetric distribution, U type support 51's inside is fixed with the first cylinder of symmetric distribution, the output shaft of first cylinder is fixed on vertical support 52, be equipped with the expansion plate between the vertical support 52, the top of expansion plate is fixed on vertical support 52, the below is fixed on U type support 51, one side that U type support 51 is close to driver's cabin 2 is fixed with locking piece 55, when rear door 5 was closed, locking piece 55 is located the top of slot.

The expansion plate comprises a first combination plate 53 distributed in an array and a second combination plate 54 distributed in an array, wherein the first combination plate 53 and the second combination plate 54 are distributed in a staggered mode, and the first combination plate 53 is connected with the adjacent second combination plate 54 in a sliding mode.

The locking member 55 includes a cavity 551, as shown in fig. 4, a solenoid 552 is fixed on the inner wall of the cavity 551, a bolt 553 is slidably arranged in the cavity 551, a magnetic block 554 is fixed above the bolt 553, and the bolt 553 passes through the lower part of the cavity 551 and is inserted into the slot to lock the rear door 5.

The second control member 6 comprises a second cylinder 61 fixed below the carriage body 31, a driving plate 62 is rotatably arranged on an output shaft of the second cylinder 61, a rotating member 63 is rotatably arranged on the carriage body 31, the rotating member 63 is slidably connected with the driving plate 62, when the rotating member 63 is perpendicular to the bottom of the carriage 3, the driving plate 62 is parallel to the bottom of the carriage 3, and when the rotating member 63 rotates to be parallel to the bottom of the carriage 3, the surface of the driving plate 62 is overlapped with the surface of the rear door 5.

The vehicle cover 7 includes a cover body 71, as shown in fig. 5, one end of the cover body 71 close to the cab 2 is closed, a limiting plate 72 which is symmetrically distributed is fixed below the cover body 71, a first slide rail 73 which is distributed in an array is arranged between the limiting plate 72 and the top of the cover body 71, the first slide rail 73 is fixed on the inner wall of the cover body 71, one end of the cover body 71 far away from the cab 2 is provided with a first connecting plate 74, one end of the first connecting plate 74 far away from the cover body 71 is provided with a groove 75, a second slide rail 76 which is symmetrically distributed is arranged in the groove 75, and the vehicle cover 7 slides on the carriage 3 through the cooperation of the first slide rail 73 and the.

The third control 8 includes a second hydraulic cylinder fixed to the vehicle compartment 3, and an output shaft of the second hydraulic cylinder is fixed to the cover 71.

The carrying part 9 comprises an elevator 91, a second sliding block which is symmetrically distributed is fixed above the elevator 91, a supporting plate which is symmetrically distributed is arranged below the elevator 91, a connecting block is arranged between the second sliding blocks, an installing knob 92 is arranged on the connecting block in a rotating mode, limiting holes which are distributed in an array mode are formed in the connecting block, a carrying barrel 93 is arranged between the supporting plates, the carrying barrel 93 is located on the supporting plate in a rotating mode, a fifth control part 94 used for controlling the carrying barrel 93 to overturn is fixed on the elevator 91, and the carrying part 9 is located on the car cover 7 through the second sliding block and the second sliding rail 76 in a matching mode.

The mounting knob 92 includes a first knob 921, as shown in fig. 6, a fastener 922 is slidably disposed on the first knob 921, a second knob 923 for controlling the fastener 922 to slide is rotatably disposed on the first knob 921, and the second knob 923 is threadedly connected to the fastener 922.

The first knob 921 rotates the third pivot 9211 including being located on the connecting block, and the one end of third pivot 9211 is fixed with first drive block 9212, and the other end is fixed with first stopper 9213, is equipped with the screw hole 9214 with third pivot 9211 coaxial line on the first drive block 9212, and screw hole 9214 runs through first drive block 9212, and the inside of first drive block 9212 is equipped with the slip chamber.

The fastener 922 is including being located the gliding third slider 9222 of slip intracavity, and one side that is close to third pivot 9211 of third slider 9222 is equipped with the block 9221, and the block 9221 is worn out first drive block 9212 block and is realized the fixed to first knob 921 in spacing downthehole, and the inside of block 9221 is equipped with rotates the chamber, and the inner wall that rotates the chamber is equipped with the internal thread.

The second knob 923 is equipped with the external screw thread including being located the intracavity pivoted turning block 9235 that rotates, on the turning block 9235, one side that the third pivot 9211 was kept away from to the turning block 923 is equipped with the installation axle 9233, and the installation axle 9233 is worn out the third slider 9222 and is equipped with the fourth pivot 9231 that first knob 921 rotated the connection, is equipped with the second stopper 9234 of symmetric distribution on the fourth pivot 9231, and the fourth pivot 9231 is worn out first drive block 9212 and is fixed with the second drive block 9232.

The material carrying barrel 93 comprises a barrel body, wherein second rotating shafts are arranged at two ends of the barrel body, the barrel body is located on the supporting plate through the second rotating shafts to rotate, and a gear is fixed on the second rotating shaft at one end.

The fifth control element 94 comprises a third cylinder fixed below the elevator 91, and a rack engaged with the gear is fixed on an output shaft of the third cylinder.

The fourth control member 10 comprises a motor fixed on the vehicle cover 7, and a screw rod matched with the threaded hole 9214 is fixed on an output shaft of the motor.

The first limiting member 20 includes a baffle 201 located in the groove 75, sliding shafts 202 are symmetrically arranged above the baffle 201, the sliding shafts 202 penetrate through the first connecting plate 74 and are fixed with a third limiting member 203, and under the action of gravity, the baffle 201 can be used for blocking the carrier 9 to prevent the carrier 9 from sliding off.

The utility model provides a tipper's anti-tilt system, anti-tilt system includes the first sector 30 of fixing in first pivot 34 one side, as shown in figure 7, first sector 30 and first pivot 34 coaxial line, and the below of first sector 30 is fixed with pressure sensor 40, is equipped with angularly adjustable support piece 50 on the chassis 1, is equipped with the controller that is connected with pressure sensor in the driver's cabin 2, is connected with the alarm on the controller.

When the carriage 3 rotates to contact with the support 50 in the self-unloading process of the dump truck, the first fan-shaped block 30 extrudes the support 50, the pressure value is transmitted to a controller in the cab 2 through the pressure sensor 40, and if the pressure value is larger than a threshold value set by the controller, an alarm is triggered to give an alarm.

The supporting member 50 includes a fifth rotating shaft 501 located on the chassis 1 for rotating, one end of the fifth rotating shaft 501 is provided with a second fan-shaped block 502 for supporting the first fan-shaped block 30, the other end of the fifth rotating shaft 501 is provided with a limiting shaft, the limiting shaft is provided with second clamping grooves 503 distributed in an array manner, one end of the limiting shaft far away from the fifth rotating shaft 501 is provided with a third driving block 504, and the second fan-shaped block 502 and the fifth rotating shaft 501 are coaxial with the first rotating shaft 34.

The second limiting member 60 is disposed above the limiting shaft, the second limiting member 60 is slidably connected with the chassis 1, the second limiting member 60 includes a sliding rod 601 located on the chassis 1 and sliding, the sliding rod 601 is provided with symmetrically distributed fourth limiting members 603, a second engaging block 602 matched with the second engaging groove 503 is disposed below the sliding rod 601, and under the action of gravity, the second engaging block 602 is inserted into the corresponding second engaging groove 503 to fix the supporting member 50.

When in use, the corner between the carriage 3 and the chassis 1 of the dump truck is controlled by the first control part 4, the liftable car cover 7 is arranged, the back door 5 with adjustable height is arranged, the back door 5 can be ensured to be used as the back door of the carriage 3 and can shield the back end of the car cover 7, the problem that the traditional dump truck is easy to fall off materials during carrying is solved, the problem of dust raising during carrying granular materials such as sand and soil is solved, the detachable carrying part 9 is arranged, the carrying part 9 is controlled to move in the carriage 3 by the fourth control part 10, automatic feeding is realized, manpower and loading efficiency are saved, the opening and closing of the back door 5 is controlled by the second control part 6, the problem that the traditional dump truck is hard to close due to overweight and overhigh back door is solved, the included angle between the first sector 30 and the second sector 502 can be adjusted by rotating the support part 50, the determination of the angle depends on the rollover separation prevention performance of the dump truck.

When installing the carrier 9, slide the second slider into recess 75, baffle 201 is by jack-up, will install the carrier 9 on the screw rod through rotating first knob 921, rotate second knob 923 and insert the spacing downthehole that corresponds with block 9221, realize the fastening connection of installation knob 92 and companion ladder 91.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.