CN113119831A

CN113119831A - Backward tipping type self-unloading semi-trailer capable of preventing material residue

Info

Publication number: CN113119831A
Application number: CN202110532192.0A
Authority: CN
Inventors: 韩天宇; 韩云
Original assignee: Mengcheng Caifu Automobile Co ltd
Current assignee: Mengcheng Caifu Automobile Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-07-16

Abstract

The utility model provides a can prevent that material is remaining from turning over formula self-discharging semitrailer after, includes the box, the box below is provided with frame and actuating mechanism, actuating mechanism is located the frame, actuating mechanism includes a gear, No. two gears, No. three gears, a rack, No. two racks, a pivot, No. three pivots, No. three motors, a gear has No. three motors through drive shaft connection, No. three motors are fixed in frame one side, No. one gear upper end and lower extreme meshing have No. three gears and No. two gears to be fixed in one side in the frame, No. three gears and No. two gear engagement have No. two racks and a rack, drive opening and closing of unloading mechanism two and unloading mechanism one through a rack and No. two racks.

Description

Backward tipping type self-unloading semi-trailer capable of preventing material residue

Technical Field

The invention relates to the technical field of self-discharging semitrailers, in particular to a backward-turning self-discharging semitrailer capable of preventing materials from remaining.

Background

The self-unloading semi-trailer is a semi-trailer, is suitable for the transportation of bulk goods such as coal, ore, earthwork, grain and the like, is a semi-trailer commonly used for load transportation, and can leave more residues when unloading goods due to the back-tipping type semi-trailer. When grain grains are transported in the grain storage bin and are directly unloaded by adopting the backward-turning type self-unloading semitrailer, more residues are attached to the inside of the carriage, the grain grains cannot be completely unloaded, and a large amount of time is wasted due to the fact that manual cleaning is needed; meanwhile, grains need to be further placed into the grain storage bin, and the working efficiency is affected.

Therefore, the tip-back type self-discharging semitrailer capable of preventing materials from remaining is provided.

Disclosure of Invention

The invention mainly aims to provide a backward-tipping type self-unloading semitrailer capable of preventing material residues, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a can prevent that material is remaining from turning over formula self-discharging semitrailer after, includes the box, the box below is provided with frame and actuating mechanism, actuating mechanism is located the frame, actuating mechanism includes a gear, No. two gears, No. three gears, a rack, No. two racks, a pivot, No. three pivots, No. three motors, No. one the gear has No. three motors through the drive shaft connection, No. three motors are fixed in frame one side, No. one gear upper end and lower extreme meshing have No. three gears and No. two gears to be fixed in one side in the frame, No. three gears and No. two gear engagement have No. two racks and a rack, No. three gears and No. two gear connection have a pivot, No. three pivots, wherein, a rack and No. two rack sliding connection are in frame one side.

Further, a first rotating shaft and a third rotating shaft are connected with a first overturning mechanism and a second overturning mechanism, the first overturning mechanism comprises a first bevel gear, a second rotating shaft and a first tamper, the first bevel gear is connected to the third gear through the first rotating shaft, the first bevel gear is meshed with the bottom of a second bevel gear fixing box body, the second bevel gear is fixedly connected with the first tamper through the second rotating shaft, the second overturning mechanism comprises a third bevel gear, a fourth rotating shaft and a second tamper, the third bevel gear is connected to the second gear through the third rotating shaft, the third bevel gear is meshed with the fourth bevel gear to be fixed to the bottom of a carriage, the fourth bevel gear is fixedly connected with the second tamper through the fourth rotating shaft, and the first tamper and the second tamper destroy the original state of the material.

Further, two sides of the box body are fixedly connected with a cleaning mechanism, the cleaning mechanism comprises a first motor, a second motor, a first reciprocating screw rod, a second reciprocating screw rod, a first limit nut, a second limit nut, a third limit nut, a fourth limit nut, a first cleaning plate and a second cleaning plate, the first reciprocating screw rod and the second reciprocating screw rod are fixedly connected to two sides of the box body, the same end of the first reciprocating screw rod and the second reciprocating screw rod is respectively provided with one side of the first motor and one side of the second motor fixing box body, the first reciprocating screw rod and the second reciprocating screw rod are in through connection with the first limit nut, the second limit nut, the third limit nut and the fourth limit nut, one side of the first limit nut and one side of the second limit nut are fixedly connected with the first cleaning plate, and one side of the third limit nut and one side of the fourth limit nut are fixedly connected with the second cleaning plate, a first motor and a second motor are used for operating a first reciprocating screw rod and a second reciprocating screw rod to enable a first cleaning plate and a second cleaning plate on a first limiting nut, a third limiting nut, a second limiting nut and a fourth limiting nut at two ends to move left and right at the bottom end of the box body to achieve a cleaning effect.

Further, the box bottom end is respectively provided with a first blanking mechanism and a second blanking mechanism, the first blanking mechanism is positioned on one side of the second blanking mechanism, wherein the first blanking mechanism comprises a first inclined plate, a second inclined plate, a first chute plate and a first sliding plate, the first inclined plate and the second inclined plate are fixedly connected to the bottom end of the box, the first chute plate is fixedly connected with the first inclined plate and the second inclined plate, the first chute is slidably connected with the first sliding plate, the second blanking mechanism comprises a third inclined plate, a fourth inclined plate, a second chute plate and a second sliding plate, the third inclined plate and the fourth inclined plate are fixedly connected to the bottom end of the box on one side of the first blanking mechanism, the second chute plate is fixedly connected with the third inclined plate and the fourth inclined plate, the first sliding plate and the second sliding plate are slidably connected with the first sliding plate and the second sliding plate on the second stamping tool and the first stamping tool and the second stamping tool, the first sliding plate and the second sliding plate are fixedly connected to the first rack and the second, the automatic unloading of the materials under the action of gravity is realized.

Furthermore, the threads at the two ends of the first reciprocating screw rod and the second reciprocating screw rod are opposite, the forward threads and the reverse threads are arranged at the second blanking mechanism, and the first cleaning plate and the second cleaning plate at the two ends of the first reciprocating screw rod and the second reciprocating screw rod are rotated to move to the second blanking mechanism in opposite directions.

Furthermore, the first cleaning plate comprises a first baffle and a first broom, the first broom is located on one side of the back face of the first baffle, one side of the first baffle is thin, and the other side of the first baffle is thick, so that the cleaning of materials remained in the carriage is facilitated.

Furthermore, one side of the tamper is longer and the other side of the tamper is shorter, and the longer side of the tamper enters the material through the turnover mechanism to achieve the purpose of destroying the original state of the tamper.

Compared with the prior art, the invention has the following beneficial effects:

1. the first gear drives the second gear and the third gear to rotate, and then the second gear and the third gear drive the first sliding plate at one end of the first rack and the second sliding plate at one end of the second rack to move leftwards and rightwards respectively, when the second gear and the third gear move, the first rotating shaft and the third rotating shaft drive the first bevel gear and the third bevel gear to rotate, and then the first stamp tool connected to one end of the second rotating shaft and the second stamp tool connected to one end of the fourth rotating shaft are driven to turn over, so that the first stamp tool and the second stamp tool damage the two pairs of original states of materials when the first blanking mechanism and the second blanking mechanism are opened, and the materials are smoothly unloaded.

2. Under the rotation of a first motor and a second motor, the threads of two ends of the first reciprocating screw rod and the second reciprocating screw rod are opposite, a first limiting nut and a third limiting nut drive the cleaning plate to move rightwards to a second discharging mechanism, and a second limiting nut and a fourth limiting nut drive the cleaning plate to move leftwards to the second discharging mechanism, so that the residual materials in the carriage can be cleaned and unloaded.

Drawings

Fig. 1 is a schematic view of the overall structure of a tip-back dump semi-trailer of the present invention for preventing material residue;

fig. 2 is a schematic structural view of the bottom of the carriage of the tip-back dump semi-trailer for preventing material residue according to the present invention;

fig. 3 is a schematic view of a driving mechanism of a tip-back dump semi-trailer for preventing material residue according to the present invention;

fig. 4 is a schematic view of a tilting mechanism of a backward-tilting dump semi-trailer for preventing material residue according to the present invention;

fig. 5 is a schematic view of a second turnover mechanism of the backward-turning type dump semi-trailer for preventing material residue according to the invention;

fig. 6 is a schematic diagram of a cleaning mechanism of the tip-back dump semi-trailer for preventing material residue according to the present invention;

fig. 7 is a side view of a baffle of the backhoe dump semi trailer of the present invention for preventing the remaining of the material;

fig. 8 is a rear view of a barrier of a dump semi-trailer according to the present invention for preventing material residue.

In the figure: 1. a box body; 2. a first blanking mechanism; 201. a first inclined plate; 202. a second inclined plate; 203. a first chute plate; 204. a first sliding plate; 3. a second blanking mechanism; 301. a sloping plate III; 302. a sloping plate IV; 303. a second chute plate; 304. a second sliding plate; 4. a drive mechanism; 401. a first gear; 402. a second gear; 403. a third gear; 404. a first rack; 405. a second rack; 406. a first rotating shaft; 407. a first bevel gear; 408. a second bevel gear; 409. a second rotating shaft; 410. a first tamping tool; 411. a second tamper; 412. a third rotating shaft; 413. a third bevel gear; 414. a fourth bevel gear; 415. a fourth rotating shaft; 416. a first turnover mechanism; 417. a second turnover mechanism; 5. a cleaning mechanism; 501. a first motor; 502. a second motor; 503. a first reciprocating screw rod; 504. a second reciprocating screw rod; 505. a first limit nut; 506. a second limit nut; 507. a third limit nut; 508. a fourth limit nut; 509. cleaning a first plate; 509a, a baffle; 509b, broom; 510. cleaning a second plate; 6. a frame; 7. and a third motor.

Detailed Description

The present invention will be further described with reference to the following detailed description, wherein the drawings are for illustrative purposes only and are not intended to be limiting, wherein certain elements may be omitted, enlarged or reduced in size, and are not intended to represent the actual dimensions of the product, so as to better illustrate the detailed description of the invention.

Example 1

As shown in fig. 1, 2, 3, 4 and 5, a tip-back dump semi trailer for preventing material residue includes a housing 1, a driving mechanism 4 is arranged below the box body 1, the driving mechanism 4 comprises a first gear 401, a second gear 402, a third gear 403, a first rack 404, a second rack 405, a first rotating shaft 406, a third rotating shaft 412 and a third motor 7, the first gear 401 is connected with a third motor 7 through a driving shaft, the third motor 7 is fixed on one side of the frame 6, the upper end and the lower end of the first gear 401 are engaged with a third gear 403 and a second gear 402 which are fixed on one side in the frame 6, the third gear 403 and the second gear 402 are engaged with a second rack 405 and a first rack 404, the first rotating shaft 406 and the third rotating shaft 412 are connected with the third gear 403 and the second gear 402, wherein, a first rack 404 and a second rack 405 are connected to one side of the frame 6 in a sliding way.

In this embodiment, the first rotating shaft 406 and the third rotating shaft 412 are connected to a first turning mechanism 416 and a second turning mechanism 417, the first turnover mechanism 416 comprises a first bevel gear 407, a second bevel gear 408, a second rotating shaft 409 and a first tamper 410, the first bevel gear 407 is connected with the third gear 403 through a first rotating shaft 406, the first bevel gear 407 is engaged with a second bevel gear 408 fixed at the bottom of the box body 1, the second bevel gear 408 is fixedly connected with a first tamper 410 through a second rotating shaft 409, the second turnover mechanism 417 comprises a third bevel gear 413, a fourth bevel gear 414, a fourth rotating shaft 415 and a second tamper 411, the third bevel gear 413 is connected to the second gear 402 through a third rotating shaft 412, the third bevel gear 413 is engaged with a fourth bevel gear 414 fixed at the bottom of the case 1, the fourth bevel gear 414 is fixedly connected with a second tamper 411 through a fourth rotating shaft 415, the original state of the material is destroyed by rotating the first tamper 410 and the second tamper 411 through the second bevel gear 408 and the fourth bevel gear 414.

In this embodiment, 1 bottom of box is provided with unloading mechanism 2 and unloading mechanism two 3 respectively, unloading mechanism 2 and unloading mechanism two 3 are located inside 6 frames, unloading mechanism 2 is located unloading mechanism two 3 one sides, wherein, unloading mechanism 2 includes swash plate 201, swash plate two 202, first 203 of sliding tray, first 204 of sliding plate, swash plate 201 and two 202 fixed connection of swash plate in the 1 bottom of box, a 201 of swash plate and two 202 fixed connection of swash plate have first 203 of sliding tray, a sliding connection of sliding tray has first 204 of sliding tray, unloading mechanism two 3 includes three 301 of swash plate, four 302 of swash plate, two 303 of sliding tray, two 304 of sliding tray, three 301 of swash plate and four 302 of swash plate are located unloading mechanism one 2 one side fixed connection in the 1 bottom of box, two 303 of sliding tray pass through three 301 of swash plate and four 302 fixed connection of swash plate, and two 303 of sliding tray have one 204 of sliding tray and two 304 of sliding tray be located two 411 of stamp and one of stamp and stamp two 411 of stamp and one of utensil 410, the first sliding plate 204 and the second sliding plate 304 are fixedly connected to the first rack 404 and the second rack 405, and the first sliding plate 204 and the second sliding plate 304 are moved through the rotation of the first rack 404 and the second rack 405, so that the materials are automatically unloaded under the action of gravity.

In this embodiment, the first side 410 of the tamper is longer and the second side is shorter, and the longer side enters the material by turning over the turning mechanism to destroy the original state.

By adopting the technical scheme: the first gear 401 arranged in the crossing mode drives the second gear 402 and the third gear 403 to rotate, then the second gear 402 and the third gear 403 drive the first sliding plate 204 at one end of the first rack 404 and the second sliding plate 304 at one end of the second rack 405 to move rightwards and leftwards respectively, when the second gear 402 and the third gear 403 move, the first bevel gear 407 and the third bevel gear 413 are driven to rotate through the first rotating shaft 406 and the third rotating shaft 412, and then the first stamp 410 connected to one end of the second rotating shaft 409 and the second stamp 411 connected to one end of the fourth rotating shaft 415 are driven to turn over, and due to the fact that the first stamp 410 is long and short in side, damage of the first stamp 410 and the second stamp 411 to the original state of the material is achieved when the first blanking mechanism 2 and the second blanking mechanism 3 are opened, and the material is unloaded smoothly.

Example 2

As shown in fig. 1, 2, 6, 7 and 8, the backward-tipping type self-unloading semitrailer capable of preventing material residue comprises a case 1, cleaning mechanisms 5 are fixedly connected to two sides of the case 1, each cleaning mechanism 5 comprises a first motor 501, a second motor 502, a first reciprocating screw 503, a second reciprocating screw 504, a first limit nut 505, a second limit nut 506, a third limit nut 507, a fourth limit nut 508, a first cleaning plate 509 and a second cleaning plate 510, the first reciprocating screw 503 and the second reciprocating screw 504 are fixedly connected to two sides of the case 1, the same ends of the first reciprocating screw 503 and the second reciprocating screw 504 are respectively provided with the first motor 501 and the second motor 502 which are fixed to one side of the case 1, the first reciprocating screw 503 and the second reciprocating screw 504 are connected with the first limit nut 505, the second limit nut 506, the third limit nut 507 and the fourth limit nut 508 in a penetrating manner, one side of the first limiting nut 505 and one side of the second limiting nut 506 are fixedly connected through a first cleaning plate 509, one side of the third limiting nut 507 and one side of the fourth limiting nut 508 are fixedly connected through a second cleaning plate 510, and the first motor 501 and the second motor 502 are used for operating the first reciprocating screw rod 503 and the second reciprocating screw rod 504 to enable the first limiting nut 505 and the third limiting nut 507 at two ends, and the first cleaning plate 509 and the second cleaning plate 510 on the second limiting nut 506 and the fourth limiting nut 508 to move left and right at the bottom end of the box body 1 to achieve a cleaning effect.

In this embodiment, the first reciprocating screw rod and the second reciprocating screw rod have opposite threads at two ends, and the forward threads and the reverse threads are arranged at the second blanking mechanism 3, and the first cleaning plate 509 and the second cleaning plate 510 at two ends of the first reciprocating screw rod and the second reciprocating screw rod are rotated to move oppositely to the second blanking mechanism 3.

In this embodiment, the first cleaning plate 509 comprises a first baffle 509a and a first broom 509b, the first broom 509b is located on the back side of the first baffle 509a, and the first baffle 509a is thin on one side and thick on the other side, so that the first broom is beneficial to cleaning materials remained in the carriage.

By adopting the technical scheme: under the rotation of a first motor and a second motor through a first reciprocating screw rod 503 and a second reciprocating screw rod 504, due to the fact that threads at two ends of the first reciprocating screw rod and the second motor are opposite, a first limiting nut 505 and a third limiting nut 507 drive a first cleaning plate 509 to move rightwards to a second discharging mechanism 3, and a second limiting nut 506 and a fourth limiting nut 508 drive a second cleaning plate 510 to move leftwards to the second discharging mechanism 3, and therefore the purpose of cleaning and unloading residual materials in a carriage is achieved.

It should be noted that, in the backward-tipping type self-unloading semitrailer capable of preventing material residues, the third motor 7 starts to work to drive the first gear 401 to rotate, the first gear 401 drives the second gear 402 and the third gear 403 to rotate, and then the second gear 402 and the third gear 403 drive the sliding plate I204 at one end of the first rack 404 and the sliding plate II 304 at one end of the second rack 405 to move rightwards and leftwards respectively, when the second gear 402 and the third gear 403 move, the first bevel gear 407 and the third bevel gear 413 are driven to rotate through the first rotating shaft 406 and the third rotating shaft 412, and then the first tamper 410 connected to one end of the second rotating shaft 409 and the second tamper 411 connected to one end of the fourth rotating shaft 415 are driven to turn over, so that the first tamper 410 and the second tamper 411 are damaged to the original state while the first blanking mechanism 2 and the second blanking mechanism 3 are opened, and the first motor 501 and the second motor 502 are opened after unloading is finished, under the rotation of the first motor and the second motor, the first reciprocating screw rod 503 and the second reciprocating screw rod 504 have opposite threads at two ends, the first limit nut 505 and the third limit nut 507 drive the first cleaning plate 509 to move rightwards to the second 3 position of the blanking mechanism, and the second limit nut 506 and the fourth limit nut 508 drive the second cleaning plate 510 to move leftwards to the second 3 position of the blanking mechanism, so that the residual materials in the carriage can be cleaned and unloaded.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. 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. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The backward-tipping type self-unloading semi-trailer capable of preventing material residues comprises a box body (1) and is characterized in that a frame (6) and a driving mechanism (4) are arranged below the box body (1), the driving mechanism (4) is positioned in the frame (6), the driving mechanism (4) comprises a first gear (401), a second gear (402), a third gear (403), a first rack (404), a second rack (405), a first rotating shaft (406), a third rotating shaft (412) and a third motor (7), the first gear (401) is connected with the third motor (7) through a driving shaft, the third motor (7) is fixed on one side of the frame (6), the upper end and the lower end of the first gear (401) are meshed with the third gear (403) and the second gear (402) and fixed on one side of the frame (6), the third gear (403) and the second gear (402) are meshed with the second rack (405) and the first rack (404), the third gear (403) and the second gear (402) are connected with a first rotating shaft (406) and a third rotating shaft (412), wherein the first rack (404) and the second rack (405) are connected to one side in the frame (6) in a sliding mode.

2. The tip-back dump semi-trailer capable of preventing material residue according to claim 1, wherein the first rotating shaft (406) and the third rotating shaft (412) are connected with a first tipping mechanism (416) and a second tipping mechanism (417), the first tipping mechanism (416) comprises a first bevel gear (407), a second bevel gear (408), a second rotating shaft (409) and a first tamper (410), the first bevel gear (407) is connected to the third gear (403) through the first rotating shaft (406), the first bevel gear (407) is meshed with the bottom of the fixed box body (1) of the second bevel gear (408), the second bevel gear (408) is fixedly connected with the first tamper (410) through the second rotating shaft (409), the second tipping mechanism (417) comprises a third bevel gear (413), a fourth bevel gear (414), a fourth rotating shaft (415) and a second tamper (411), the third bevel gear (413) is connected to the second tamper (402) through the third rotating shaft (412), a third bevel gear (413) is meshed with a fourth bevel gear (414) and fixed to the bottom of the box body (1), the fourth bevel gear (414) is fixedly connected with a second tamper (411) through a fourth rotating shaft (415), and the original state of the material is destroyed by rotating the first tamper (410) and the second tamper (411) through the second bevel gear (408) and the fourth bevel gear (414).

3. The backward turning type self-discharging semitrailer capable of preventing material residues according to claim 1, characterized in that cleaning mechanisms (5) are fixedly connected to two sides of the box body (1), each cleaning mechanism (5) comprises a first motor (501), a second motor (502), a first reciprocating screw rod (503), a second reciprocating screw rod (504), a first limiting nut (505), a second limiting nut (506), a third limiting nut (507), a fourth limiting nut (508), a first cleaning plate (509) and a second cleaning plate (510), the first reciprocating screw rod (503) and the second reciprocating screw rod (504) are fixedly connected to two sides of the box body (1), the same end of the first reciprocating screw rod (503) and the second reciprocating screw rod (504) is respectively provided with the first motor (501) and the second motor (502) which are fixed to one side of the box body (1), and the first reciprocating screw rod (503) and the second reciprocating screw rod (504) are connected with the first limiting nut (505) and the second limiting nut (510) in a penetrating mode The cleaning device comprises a position nut (506), a third limit nut (507) and a fourth limit nut (508), wherein a first limit nut (505) and a first limit nut (506) side fixedly connected with a cleaning plate (509), a third limit nut (507) and a second limit nut (508) side fixedly connected with a cleaning plate (510) enable the first limit nut (505) and the third limit nut (507), the second limit nut (506) and the second cleaning plate (510) on the fourth limit nut (508) to move left and right at the bottom end of the box body (1) to achieve cleaning effects through a first motor (501) and a second motor (502) operating a first reciprocating screw rod (503) and a second reciprocating screw rod (504) at two ends.

4. The backward tipping type self-unloading semi-trailer capable of preventing material residues as claimed in claim 1, wherein the bottom end of the box body (1) is respectively provided with a first unloading mechanism (2) and a second unloading structure, the first unloading mechanism (2) is positioned on one side of the second unloading mechanism (3), wherein the first unloading mechanism (2) comprises a first inclined plate (201), a second inclined plate (202), a first chute plate (203) and a first sliding plate (204), the first inclined plate (201) and the second inclined plate (202) are fixedly connected with the bottom end of the box body (1), the first inclined plate (201) and the second inclined plate (202) are fixedly connected with the first sliding plate (203), the first sliding plate (203) is slidably connected with the first sliding plate (204), the second unloading mechanism (3) comprises a third inclined plate (301), a fourth inclined plate (302), a second sliding plate (303) and a second sliding plate (304), the third inclined plate (301) and the fourth plate (302) are positioned on one side of the first unloading mechanism (2) and are fixedly connected with the bottom end of the End, swash plate three (301) and swash plate four (302) fixedly connected with spout board two (303), spout board one (203) and spout board two (303) sliding connection have slide one (204) and slide two (304) to be located two (411) of stamp and stamp one (410) top, slide one (204) and slide two (304) fixed connection in rack (404) and No. two rack (405), make slide one (204) and slide two (304) remove through the rotation of rack (404) and No. two rack (405), realize the material through gravity action automatic discharge.

5. The tip-back type dump semi trailer capable of preventing material residue according to claim 3, characterized in that the threads of the first reciprocating screw rod (503) and the second reciprocating screw rod (504) are opposite, the forward threads and the reverse threads are arranged at the second (3) of the blanking mechanism, and the first cleaning plate (509) and the second cleaning plate (510) at the two ends are moved to the second (3) of the blanking mechanism in opposite directions by rotating the first reciprocating screw rod (503) and the second reciprocating screw rod (504).

6. The tip-back dump semi trailer according to claim 3, wherein the first cleaning plate (509) and the second cleaning plate (510) comprise a baffle (509 a) and a broom (509 b), the broom (509 b) is located on the back side of the baffle (509 a), the thin side of the baffle (509 a) is thick, and the material left in the carriage is cleaned conveniently.

7. The back-tipping type self-discharging semitrailer capable of preventing material residues as claimed in claim 2, characterized in that the first tamper (410) and the second tamper (411) are longer on one side and shorter on the other side, and the longer side enters the material through the overturning of the first turnover mechanism (416) and the second turnover mechanism (417) so as to destroy the original state of the material.