阅读说明：本技术 一种模块化骨架半挂车 (Modularization skeleton semitrailer ) 是由 许光亚 于 2020-09-03 设计创作，主要内容包括：本发明公开了一种模块化骨架半挂车,涉及半挂车技术领域,包括车架、行走机构、支撑装置、侧防护装置、后防护装置、侧标志灯、备胎架,所述行走机构、支撑装置、侧防护装置、后防护装置、侧标志灯、备胎架通过螺栓组固定安装在车架上。该模块化骨架半挂车,通过分体式的方式,将传统的整体式结构半挂车分为了便于拆装的多个主要部件,并采用螺栓组连接固定,在运输半挂车的过程中可以将半挂车的主要部件拆下来运输,提高了空间利用率,并且,在半挂车有部分损坏后可以快速的维修更换,具有较强的实用性。(The invention discloses a semi-trailer with a modularized framework, which relates to the technical field of semi-trailers and comprises a frame, a travelling mechanism, a supporting device, a side protection device, a rear protection device, a side marker lamp and a spare tire rack, wherein the travelling mechanism, the supporting device, the side protection device, the rear protection device, the side marker lamp and the spare tire rack are fixedly arranged on the frame through a bolt group. This modularization skeleton semitrailer through split type mode, divides traditional integral structure semitrailer for the convenience of a plurality of essential elements of dismouting to it is fixed to adopt the bolt assembly to connect, can pull down the transportation with the essential element of semitrailer at the in-process of transportation semitrailer, has improved space utilization, and, has the maintenance that can be quick after the part damages and changes, has stronger practicality.)

1. The utility model provides a modularization skeleton semitrailer, includes frame, running gear, strutting arrangement (7), side protector, back protector, side marker lamp, spare tyre rack (8), its characterized in that:

the frame comprises a first longitudinal beam (1), a supporting leg mounting seat (2), a web plate (6) and a lower wing plate (12);

the first longitudinal beam (1) is fixedly connected with the travelling mechanism through a first bolt group, and the first bolt group is inserted into the travelling mechanism and the frame from the horizontal direction;

the supporting leg mounting base (2) is fixedly connected with the supporting device (7) through a second bolt group, and the second bolt group is inserted into the supporting device (7) and the frame from the horizontal direction;

the side protection device comprises a protective net cross rod (3), the protective net cross rod (3) is fixedly connected to the bottom of the first longitudinal beam (1) through a third bolt group, and the third bolt group is inserted into the side protection device and the frame from the vertical direction;

the rear protection device comprises a bumper diagonal brace (4), the first longitudinal beam (1) is fixedly connected with the bumper diagonal brace (4) through a fourth bolt group, and the fourth bolt group is inserted into the rear protection device and the frame from the horizontal direction;

the side marker lamp penetrates from one side of the first longitudinal beam (1), is fixedly connected to one side of the web plate (6) through a fifth bolt group, and is inserted into the side marker lamp and the frame from the horizontal direction;

the spare tire rack (8) is fixedly connected to the first longitudinal beam (1) through a sixth bolt group, and the sixth bolt group is inserted into the spare tire rack (8) and the frame from the horizontal direction.

2. The modular framework semitrailer of claim 1, wherein: one side of the first longitudinal beam (1) is welded with a row of connecting members (9), each connecting member (9) comprises a U-shaped structural connecting plate (901), two ends of each connecting plate (901) are welded on one side of the corresponding first longitudinal beam (1), two reinforcing plates (902) which are arranged oppositely are welded between one side of each first longitudinal beam (1) and the inner wall of each connecting plate (901), each reinforcing plate (902) is arranged in the vertical direction, and the height of each reinforcing plate (902) is equal to that of each first longitudinal beam (1);

three first mounting holes are formed in one side of the connecting plate (901), the three first mounting holes are separated by the two reinforcing plates (902), and two second longitudinal beams (10) which are arranged oppositely are welded to the top of the travelling mechanism;

the second longitudinal beam (10) is of an L-shaped structure, a plurality of first round holes corresponding to the first mounting holes are formed in one side of the second longitudinal beam (10), and the first bolt group penetrates through the second longitudinal beam (10) and fixes the second longitudinal beam (10) on the connecting plate (901).

3. The modular framework semitrailer of claim 1, wherein: two rows of second mounting holes are formed in one side of the supporting leg mounting base (2), a plurality of second round holes matched with the second mounting holes are formed in one side of the supporting device (7), and the second bolt group penetrates through the supporting device (7) and fixes the supporting device (7) on the first longitudinal beam (1).

4. The modular framework semitrailer of claim 1, wherein: a plurality of third mounting holes are formed in the protective net cross rod (3), a plurality of third round holes matched with the third mounting holes are formed in the bottom of the first longitudinal beam (1), and the third bolt group penetrates through the protective net cross rod (3) and fixes the side protection device at the bottom of the first longitudinal beam (1).

5. The modular framework semitrailer of claim 1, wherein: one side of the lower wing plate (12) is provided with a row of fourth mounting holes, one side of the bumper diagonal brace (4) is provided with a plurality of fourth round holes matched with the fourth mounting holes, and the fourth bolt group penetrates through the lower wing plate (12) and fixes the rear protection device on the lower wing plate (12).

6. The modular framework semitrailer of claim 1, wherein: the side marker lamp comprises an installation seat (13), a plurality of fifth installation holes are formed in one side of the installation seat (13), a row of fifth through holes matched with the fifth installation holes are formed in one side of the web plate (6), and the fifth bolt group penetrates through the installation seat (13) and fixes the side marker lamp on the frame.

7. The modular framework semitrailer of claim 1, wherein: and four sixth mounting holes are formed in one side of the spare tire frame (8), four sixth through holes matched with the sixth mounting holes are formed in one side of the first longitudinal beam (1), and the four sixth bolt groups penetrate through the spare tire frame (8) and fix the spare tire frame (8) on the first longitudinal beam (1).

8. The modular framework semitrailer of claim 1, wherein: fixed mounting has the locking part who is used for loading the container on the frame, locking part includes in two end tool to lock roof beams (15), two sets of first well tool to lock roof beams (16), six second tool to lock roof beams (17), two end tool to lock roof beam (15) are respectively through one row of seventh bolt group fixed mounting at the both ends of frame, and two the installation orientation of end tool to lock roof beam (15) is opposite.

9. The modular framework semitrailer of claim 8, wherein: four first middle lock beams (16) are fixedly mounted on the frame through eighth bolt sets, and four first middle lock beams (16) are located between the two end lock beams (15).

10. The modular framework semitrailer of claim 8, wherein: six lock roof beams (17) are all through ninth bolt group fixed mounting on the frame in the second, and six lock roof beams (17) are all located between two sets of first lock roof beams (16) in the second.

Technical Field

The invention relates to the technical field of semitrailers, in particular to a modular framework semitrailer.

Background

The semitrailer is a heavy transport vehicle connected with the head of the semitrailer through a towing pin, the axle of the semitrailer is arranged behind the gravity center (when the vehicle is evenly loaded) of the vehicle and is provided with a coupling device capable of transmitting horizontal and vertical forces to the tractor, the semitrailer is generally a three-axle semitrailer and is divided into an eleven-meter-bin-column semitrailer, a thirteen-meter-bin-column semitrailer, a low-flat semitrailer and the like.

However, the existing modularized framework semitrailer is of an integral structure, is very troublesome in the process of transporting the semitrailer, is low in space utilization rate, and is difficult to maintain and replace after the semitrailer is partially damaged.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a modular framework semitrailer, which solves the problems that the existing modular framework semitrailer is of an integral structure, is very troublesome in the process of transporting the semitrailer, is low in space utilization rate, and is difficult to maintain and replace after a part of the semitrailer is damaged.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a semi-trailer with a modularized framework comprises a frame, a walking mechanism, a supporting device, a side protection device, a rear protection device, a side marker lamp and a spare tire rack;

the frame comprises a first longitudinal beam, a supporting leg mounting seat, a web plate and a lower wing plate;

the first longitudinal beam is fixedly connected with the travelling mechanism through a first bolt group, and the first bolt group is inserted into the travelling mechanism and the frame from the horizontal direction;

the supporting leg mounting seat is fixedly connected with the supporting device through a second bolt group, and the second bolt group is inserted into the supporting device and the frame from the horizontal direction;

the side protection device comprises a protective net cross rod, the protective net cross rod is fixedly connected to the bottom of the first longitudinal beam through a third bolt group, and the third bolt group is inserted into the side protection device and the frame from the vertical direction;

the rear protection device comprises a bumper diagonal brace, the first longitudinal beam is fixedly connected with the bumper diagonal brace through a fourth bolt group, and the fourth bolt group is inserted into the rear protection device and the frame from the horizontal direction;

the side marker lamp penetrates from one side of the first longitudinal beam, the side marker lamp is fixedly connected to one side of the web plate through a fifth bolt group, and the fifth bolt group is inserted into the side marker lamp and the frame from the horizontal direction;

the spare tire frame is fixedly connected to the first longitudinal beam through a sixth bolt group, and the sixth bolt group is inserted into the spare tire frame and the frame from the horizontal direction.

Preferably, a row of connecting members are welded on one side of the first longitudinal beam, each connecting member comprises a U-shaped connecting plate, two ends of each connecting plate are welded on one side of the first longitudinal beam, two reinforcing plates which are arranged oppositely are welded between one side of the first longitudinal beam and the inner wall of each connecting plate, the reinforcing plates are arranged in the vertical direction, and the height of each reinforcing plate is equal to that of the first longitudinal beam;

three first mounting holes are formed in one side of the connecting plate, the three first mounting holes are separated by the two reinforcing plates, and two second longitudinal beams which are arranged oppositely are welded to the top of the travelling mechanism;

the second longitudinal beam is of an L-shaped structure, a plurality of first round holes corresponding to the first mounting holes are formed in one side of the second longitudinal beam, and the first bolt group penetrates through the second longitudinal beam and fixes the second longitudinal beam on the connecting plate.

Preferably, two rows of second mounting holes are formed in one side of the supporting leg mounting base, a plurality of second round holes matched with the second mounting holes are formed in one side of the supporting device, and the second bolt group penetrates through the supporting device and fixes the supporting device on the first longitudinal beam.

Preferably, a plurality of third mounting holes are formed in the cross bar of the protective net, a plurality of third round holes matched with the third mounting holes are formed in the bottom of the first longitudinal beam, and the third bolt group penetrates through the cross bar of the protective net and fixes the side protection device at the bottom of the first longitudinal beam.

Preferably, one side of the lower wing plate is provided with a row of fourth mounting holes, one side of the bumper diagonal brace is provided with a plurality of fourth round holes matched with the fourth mounting holes, and the fourth bolt group penetrates through the lower wing plate and fixes the rear protection device on the lower wing plate.

Preferably, the side marker lamp comprises an installation seat, a plurality of fifth installation holes are formed in one side of the installation seat, a row of fifth through holes matched with the fifth installation holes are formed in one side of the web plate, and the fifth bolt group penetrates through the installation seat and fixes the side marker lamp on the frame.

Preferably, one side of the spare tire rack is provided with four sixth mounting holes, one side of the first longitudinal beam is provided with four sixth through holes matched with the sixth mounting holes, and the four sixth bolt groups penetrate through the spare tire rack and fix the spare tire rack on the first longitudinal beam.

Preferably, fixed mounting has the locking part who is used for loading the container on the frame, locking part includes in two end tool to lock roof beams, two sets of first tool to lock roof beams, the six second tool to lock roof beams, two end tool to lock roof beams is respectively through one row of seventh bolt group fixed mounting at the both ends of frame, and two the installation orientation of end tool to lock roof beam is opposite.

Preferably, four first middle lock beams are fixedly mounted on the frame through eighth bolt sets, and four first middle lock beams are located between the two end lock beams.

Preferably, six lock roof beams in the second all pass through ninth bolt group fixed mounting on the frame, and six lock roof beams in the second all are located between two sets of first lock roof beams.

(III) advantageous effects

The invention provides a modular framework semitrailer. The method has the following beneficial effects:

(1) this modularization skeleton semitrailer through split type mode, divides traditional integral structure semitrailer for the convenience of a plurality of essential elements of dismouting to it is fixed to adopt the bolt assembly to connect, can tear the essential element of semitrailer down the transportation at the in-process of transportation semitrailer, has improved space utilization, and, has the maintenance that can be quick after the part damages and changes, has stronger practicality.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is an exploded view of FIG. 1 of the present invention;

FIG. 3 is a top view of the overall structure of the present invention;

FIG. 4 is a schematic view of the front half of FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the second half of FIG. 1 according to the present invention;

FIG. 6 is a schematic view of the front half of FIG. 2 according to the present invention;

FIG. 7 is a schematic view of the second half of FIG. 2 according to the present invention;

FIG. 8 is a schematic view of the front half of FIG. 3 according to the present invention;

FIG. 9 is a schematic view of the second half of FIG. 3 according to the present invention;

FIG. 10 is an enlarged view taken at A of FIG. 6 in accordance with the present invention;

FIG. 11 is an enlarged view taken at B of FIG. 7 in accordance with the present invention;

FIG. 12 is an enlarged view taken at C of FIG. 7 in accordance with the present invention;

FIG. 13 is a side view of the overall structure of the present invention;

FIG. 14 is an exploded view of FIG. 13 in accordance with the present invention;

FIG. 15 is a top plan view of the frame construction of the present invention;

FIG. 16 is a schematic structural view of the front half of FIG. 15 in accordance with the present invention;

FIG. 17 is a schematic view of the back half structure of FIG. 15 in accordance with the present invention;

FIG. 18 is a front view of the traveling mechanism of the present invention;

FIG. 19 is a structural view of a first stringer in accordance with the present invention;

FIG. 20 is a top view of a kingpin plate structure in accordance with the present invention;

FIG. 21 is a top view of the side marker light structure of the present invention;

FIG. 22 is a front view of the side guard construction of the present invention;

FIG. 23 is a top view of the side guard structure of the present invention;

FIG. 24 is a front view of a first lock support plate structure of the present invention;

FIG. 25 is a side view of a first lock support plate structure of the present invention;

FIG. 26 is a top view of a first lock support plate structure of the present invention;

FIG. 27 is a front view of a second middle latch beam configuration of the present invention;

FIG. 28 is a side view of a second middle lock beam configuration of the present invention;

FIG. 29 is a top view of a second middle lock beam configuration of the present invention;

FIG. 30 is a top view of an end lock beam construction of the present invention;

FIG. 31 is an enlarged view taken at D of FIG. 17 in accordance with the present invention;

FIG. 32 is an enlarged view at E of FIG. 17 in accordance with the present invention.

In the figure: 1. a first stringer; 2. a support leg mounting base; 3. a protective net cross bar; 4. a bumper brace; 5. an outer vertical rib; 6. a web; 7. a support device; 8. a spare tire rack; 9. a connecting member; 901. a connecting plate; 902. a reinforcing plate; 10. a second stringer; 11. an end lock beam mount; 12. a lower wing plate; 13. a mounting seat; 14. a front bracket; 15. an end lock beam; 1501. a beam body; 1502. a side sealing plate; 1503. a front closing plate; 1504. a side lock; 16. a first middle lock beam; 1601. a first mounting plate; 1602. a first spar; 1603. a first diagonal brace; 1604. a first upper reinforcing plate; 1605. a first lower reinforcing plate; 1606. a first lock back plate; 1607. a first lock support plate; 1608. a first lock plate; 1609. a first middle lock; 17. a second middle lock beam; 1701. a second mounting plate; 1702. a second spar; 1703. a second diagonal brace; 1704. a second upper reinforcing plate; 1705. a second lockset back plate; 1706. a second lockset support plate; 1707. a second lockset panel; 1708. a second middle lock; 18. a traction pin plate; 19. a tow pin beam; 20. a tow pin stringer; 21. a tow pin; 22. positioning the beam; 23. an upper wing plate; 24. a rectangular plate; 25. a middle bracket; 26. a rear bracket; 27. a side protective net; 28. a protective net longitudinal bar; 29. a lamp post; 30. a lamp body; 31. a triangular inclined strut; 32. and a limiting block.

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.

Referring to fig. 1-32, the present invention provides a technical solution: a semi-trailer with a modularized framework comprises a frame, a walking mechanism, a supporting device 7, a side protection device, a rear protection device, a side marker lamp and a spare tire frame 8;

referring to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 16 and 17, the frame comprises two first longitudinal beams 1, two end lock beam mounting seats 11, eight triangular inclined struts 31, a towing pin plate 18, two towing pin cross beams 19, two towing pin longitudinal beams 20, a towing pin 21, a plurality of positioning beams 22 and two leg mounting seats 2, the towing pin 21 is used for connecting a tractor and a semitrailer, the first longitudinal beam 1 comprises a web 6, an upper wing plate 23 and a lower wing plate 12, the upper wing plate 23 is welded on the top of the web 6, the lower wing plate 12 is welded on the bottom of the web 6, the upper wing plate 23 and the lower wing plate 12 are parallel to each other, the upper wing plate 23 and the lower wing plate 12 are both perpendicular to the web 6, the web 6 is positioned in the middle of the upper wing plate 23 and in the middle of the lower wing plate 12, a row of outer vertical ribs 5 are welded on the bottom of the upper wing plate 23, the bottom of the outer vertical rib 5 is welded on the upper surface of the lower wing plate 12, the first longitudinal beam 1 is supported more firmly by the outer vertical rib 5, the two end lock beam mounting seats 11 are respectively positioned at the two ends of the frame, referring to fig. 10, the end lock beam mounting seats 11 are of an L-shaped structure and are welded at one end of the two first longitudinal beams 1 for mounting end lock beams 15, the triangular inclined struts 31 are of a triangular plate-shaped structure, the eight triangular inclined struts 31 are grouped in pairs, four groups of the eight triangular inclined struts are respectively positioned at the four corners of the frame and are welded at the joint of the first longitudinal beam 1 on the end lock beam mounting seats 11, the upper surface of one triangular inclined strut 31 in one group is welded on the lower surface of the upper wing plate 23, the lower surface of the other triangular inclined strut 31 in the lower surface of the lower wing plate 12, one right-angle side of the triangular inclined strut 31 is welded on one side of the first longitudinal beam 1, the other right-angle side of the triangular inclined strut, the triangular inclined strut 31 is used for reinforcing the joint of the end lock beam mounting seat 11 and the first longitudinal beam 1, so that the whole frame is firmer, referring to fig. 20, the traction pin plate 18 is welded at the bottom of the two lower wing plates 12, the traction pin plate 18 is positioned at the head position of the frame, first triangular notches are respectively formed in two corners of the windward side of the traction pin plate 18, triangular blocks with a triangular structure are respectively welded on two corners of the leeward side of the traction pin plate 18, the structure can reduce the air resistance borne by the frame, a rectangular through hole is formed in the middle of the traction pin plate 18, two traction pin longitudinal beams 20 are welded inside the traction pin plate 18, the two traction pin longitudinal beams 20 are both parallel to the first longitudinal beam 1, the traction pin transverse beam 19 is in a U-shaped structure, the two traction pin transverse beams 19 are welded on the upper surface of the traction pin plate 18, the two traction pin transverse beams 19 are both perpendicular to the first longitudinal beam 1, and two ends of the two traction pin transverse beams 19 are, the two side edges of the opening side of the towing pin crossbeam 19 are parallel to the upper wing plate 23, the two towing pin crossbeams 19 are arranged back to back, the opening sides are outward, a certain distance is reserved between the two towing pin crossbeams 19, the structure is stable, a rectangular plate 24 is welded inside the towing pin plate 18, the rectangular plate 24 is parallel to the towing pin longitudinal beams 20 and is positioned between the two towing pin longitudinal beams 20, a first circular through hole is formed in the upper surface of the rectangular plate 24, the towing pin 21 is installed at the first circular through hole on the rectangular plate 24 (fixed by bolts and nuts, the prior art does not need to describe in detail), the towing pin 21 is used for connecting a tractor and a semitrailer, the positioning beams 22 are of a U-shaped structure, the two side edges of the opening side of the positioning beam 22 are parallel to the upper wing plate 23 and are welded between the two first longitudinal beams 1, the positioning beam 22 can be an independent one, or two positioning beams 22 can be welded, the positions of the positioning beams 22 correspond to the mounting positions of other components respectively, so that the function of assisting workers in quickly positioning the mounting positions when the other components are mounted is achieved, the function of reinforcing a frame is also achieved, and the supporting leg mounting base 2 is of a rectangular box-shaped structure with an opening at the bottom end;

the first longitudinal beam 1 is fixedly connected with the travelling mechanism through a first bolt group, and the first bolt group is inserted into the travelling mechanism and the frame from the horizontal direction;

the supporting leg mounting base 2 is fixedly connected with the supporting device 7 through a second bolt group, and the second bolt group is inserted into the supporting device 7 and the frame from the horizontal direction;

the protective net cross rod 3 is fixedly connected to the bottom of the first longitudinal beam 1 through a third bolt group, and the third bolt group is inserted into the side protective device and the frame from the vertical direction;

the first longitudinal beam 1 is fixedly connected with a bumper diagonal brace 4 through a fourth bolt group, and the fourth bolt group is inserted into the rear protection device and the frame from the horizontal direction;

the side marker lamp penetrates from one side of the first longitudinal beam 1, is fixedly connected to one side of the web 6 through a fifth bolt group, and is inserted into the side marker lamp and the frame from the horizontal direction;

the spare tire carrier 8 is fixedly connected to the first longitudinal beam 1 through a sixth bolt group, and the sixth bolt group is inserted into the spare tire carrier 8 and the frame from the horizontal direction.

Referring to fig. 12 and 19, a row of connecting members 9 are welded on one side of a first longitudinal beam 1, each connecting member 9 comprises a U-shaped connecting plate 901, two ends of each connecting plate 901 are welded on one side of the first longitudinal beam 1, two reinforcing plates 902 which are arranged oppositely are welded between one side of the first longitudinal beam 1 and the inner wall of each connecting plate 901, each reinforcing plate 902 is arranged in the vertical direction, the height of each reinforcing plate 902 is equal to that of the corresponding first longitudinal beam 1, and each reinforcing plate 902 plays a role in connecting the corresponding connecting plate 901 to a vehicle frame;

three first mounting holes are formed in one side of a connecting plate 901, the three first mounting holes are separated by two reinforcing plates 902, the connecting plate 901 is separated by the two reinforcing plates 902 to form the positions of the three first mounting holes, so that stress distribution is more uniform, the connection between a frame and a travelling mechanism is more stable, two second longitudinal beams 10 which are oppositely arranged are welded on the top of the travelling mechanism, referring to fig. 18, the travelling mechanism comprises a front support 14, two middle supports 25 and a rear support 26, the two second longitudinal beams 10 are welded on the top of the front support 14, the two middle supports 25 and the rear support 26, the two middle supports 25 are positioned between the front support 1 and the rear support 26, three groups of tires are fixedly mounted on the positions between the front support 14, the two middle supports 25 and the rear support 26, referring to fig. 31 and 32, two limiting blocks 32 are welded on the two first longitudinal beams 1, and four limiting blocks 32 are positioned at four corners of the travelling mechanism, which are contacted with the two first longitudinal beams 1, the front and the back of the second longitudinal beam 10 of the travelling mechanism are limited between four limit blocks 32 of two first longitudinal beams 1 of the frame (the travelling mechanism is limited in the horizontal direction, when a first bolt group is not installed in the vertical direction (the travelling mechanism is limited in the horizontal direction, and the frame can be separated when the first bolt group is not installed in the vertical direction), so that a worker can conveniently install the travelling mechanism;

referring to fig. 13 and 14, the second longitudinal beams 10 are L-shaped structures, the open sides of the two second longitudinal beams 10 face inward, one side of the second longitudinal beam 10 is provided with a plurality of first round holes corresponding to the first mounting holes, the first bolt group penetrates from the second longitudinal beam 10 and fixes the second longitudinal beam 10 on the connecting plate 901, when a worker installs the traveling mechanism, the worker places the frame on the traveling mechanism, places the bottom of the connecting plate 901 on the second longitudinal beam 10, aligns the first round holes on the second longitudinal beam 10 with the first mounting holes on the connecting plate 901, and screws in the first bolt group and screws up the first bolt group.

Wherein, two rows of second mounting holes have been seted up to one side of landing leg mount pad 2, a plurality of and second mounting hole matched with second round hole have been seted up to one side of strutting arrangement 7, the second bolt group penetrates and fixes strutting arrangement 7 on first longeron 1 from strutting arrangement 7, strutting arrangement 7 is single action type strutting arrangement 7, can go up and down, strutting arrangement 7 has two, install respectively on two landing leg mount pads 2, and two strutting arrangement 7 set up side by side, strutting arrangement 7 is used for the semitrailer to support when the semitrailer is shirked, the staff inserts strutting arrangement 7 in the inside of landing leg mount pad 2 when installing strutting arrangement 7, make the second round hole on strutting arrangement 7 align with the second mounting hole on landing leg mount pad 2, it can to twist second bolt group and screw up.

Wherein, referring to fig. 22 and 23, a plurality of third mounting holes are formed on the guard rail 3, a plurality of third round holes matched with the third mounting holes are formed at the bottom of the first longitudinal beam 1, that is, the third round holes are located at the bottom of the lower wing plate 12, third bolt groups penetrate through the guard rail 3 and fix the side protection device at the bottom of the first longitudinal beam 1, the side protection device comprises four side guards 27, three guard rail cross bars 3 and six guard rail longitudinal bars 28, one end of the side guard 27 close to the vehicle head is of an arc structure, the four side guards 27 are in a group of two by two, two groups are respectively located at two sides of the vehicle frame, two side guards 27 are all parallel to the first longitudinal beam 1, two groups of six guard rail longitudinal bars 28 are in a group of three, two groups are respectively located at two sides of the vehicle frame, the three guard rail longitudinal bars 28 are welded at one side of the two side guard rails 27, and the three, the three protective net cross rods 3 are welded between the two side protective nets 27 close to the vehicle head, when a worker installs the side protective devices, the side protective devices are placed at the bottom of the vehicle frame, third mounting holes in the protective net cross rods 3 are aligned with third round holes in the first longitudinal beams 1, and a third bolt group is screwed in and tightened.

Wherein, one side of lower pterygoid lamina 12 has seted up one row of fourth mounting hole, a plurality of and fourth mounting hole complex fourth round hole have been seted up to one side of bumper bracing 4, the fourth round hole is seted up in the bottom of bumper bracing 4, the direction of penetrating of fourth bolt group is vertical direction, fourth bolt group penetrates and fixes back protector on lower pterygoid lamina 12 from lower pterygoid lamina 12, back protector includes the back bumper, the bumper montant, bumper bracing 4, the piece is prevented crashing after, the tail lamp frame, the fog lamp frame, the license plate frame, its structure is prior art, do not describe repeatedly, when the staff installs back protector, place back protector at the frame afterbody, make the fourth round hole on the bumper bracing 4 align with the fourth mounting hole on lower pterygoid lamina 12, it can to twist fourth bolt group and tighten.

Referring to fig. 21, one side of the mounting base 13 is provided with a plurality of fifth mounting holes, one side of the web 6 is provided with a row of fifth through holes matched with the fifth mounting holes, a fifth bolt group penetrates through the mounting base 13 and fixes the side marker lamp on the frame, the side marker lamp is symmetrically installed on two sides of the frame, the side marker lamp comprises the mounting base 13, a lamp post 29 and a lamp body 30, one side of the mounting base 13 is welded with the lamp post 29, one end of the lamp post 29 is fixedly provided with the lamp body 30, one side of the mounting base 13 is provided with three fifth mounting holes arranged in an equilateral triangle, the three fifth mounting holes are respectively located at three corners, the fifth through hole on the web 6 is matched with the fifth mounting hole on the mounting base 13, and the middle of the three fifth mounting holes on the mounting base 13 and the middle of the three fifth through holes on the web 6 are respectively provided with a second circular through hole, which is convenient for workers to align and install the, when a worker installs the side marker lamp, the side marker lamp is placed on one side of the web 6, the position of the side marker lamp is adjusted, the second circular through hole in the mounting base 13 is aligned with the second circular through hole in the web 6, if the side marker lamp is not aligned, the worker can stretch a hand into the web 6 to align the second circular through hole in the mounting base 13 with the second circular through hole in the web 6, the side marker lamp is rotated to align the middle of the fifth mounting hole in the mounting base 13 with the fifth through hole in the web 6, and the fifth bolt group is screwed in and tightened.

Wherein, four sixth mounting holes have been seted up to one side of spare tire rack 8, four and sixth mounting hole complex sixth through-hole have been seted up to one side of first longeron 1, the sixth through-hole is seted up on web 6, four sixth bolt groups penetrate and fix spare tire rack 8 on first longeron 1 from spare tire rack 8, spare tire rack 8 has two, two spare tire racks 8 set up respectively on two first longerons 1, all install a spare tyre on every spare tire rack 8, when staff's installation spare tire rack 8, place spare tire rack 8 in the bottom of frame, make sixth mounting hole on the spare tire rack 8 align with the sixth through-hole on the web 6, it can to twist sixth bolt group and screw up.

Wherein, a locking component for loading a container is fixedly arranged on the frame, the locking component comprises two end lock beams 15, four first middle lock beams 16 and six second middle lock beams 17, referring to fig. 11 and 30, the two end lock beams 15 are respectively fixedly arranged at two ends of the frame through a row of seventh bolt groups, the mounting directions of the two end lock beams 15 are opposite, the end lock beam mounting seats 11 are L-shaped structures, the two end lock beam mounting seats 11 are respectively welded at two ends of the frame, the two end lock beam mounting seats 11 are oppositely arranged, the opening sides of the two end lock beam mounting seats 11 face outwards, the end lock beam 15 comprises a beam body 1501, four side seal plates 1502, two front seal plates 1503 and two side locks 1504, the beam body 1501 is L-shaped, the four side seal plates 1502 are respectively welded at two ends of the beam body 1501, the four side seal plates 1502 are respectively welded between the beam body 1501 and the two front seal plates 1503, the side sealing plates 1502 are rectangular plate-shaped structures, a third circular through hole is formed in the middle of each side sealing plate 1502, each front sealing plate 1503 is a right trapezoid plate-shaped structure, the two front sealing plates 1503 are welded to the top of the beam body 1501 relatively, the lower base edges (the lower base edges are longer base edges of trapezoids) of the front sealing plates 1503 are welded to one side plate of the beam body 1501, one side lock 1504 is fixedly installed at each of the two front sealing plates 1503, a row of seventh installation holes are formed in the two side plates perpendicular to the beam body 1501, seventh through holes matched with the seventh installation holes are formed in the two side plates perpendicular to the end lock beam installation seat 11, when an operator installs the end lock beam 15, the two end lock beams 15 are placed on the two end lock beam installation seats 11, the seventh installation holes in the beam body 1501 are aligned with the seventh through holes in the end lock beam installation seat 11, and the seventh bolt group is screwed in and tightened.

Referring to fig. 24, 25 and 26, four first middle lock beams 16 are all fixedly mounted on the frame through an eighth bolt group, and the four first middle lock beams 16 are located between two end lock beams 15, each first middle lock beam 16 includes a first mounting plate 1601, a first wing beam 1602, a first diagonal brace 1603, a first upper reinforcing plate 1604, a first lower reinforcing plate 1605, a first lock back plate 1606, a first lock support plate 1607, a first lock plate 1608 and a first middle lock 1609, the first mounting plate 1601 is of a rectangular structure, two corners below the first mounting plate are provided with second triangular notches, the first upper reinforcing plate 1604 is of a U-shaped structure and is welded above one side of the first mounting plate 1601, the first lower reinforcing plate 1605 is welded below one side of the first mounting plate 1601, two first wing beams are welded between the first upper reinforcing plate 1604 and the first lower reinforcing plate 1605, the first diagonal brace 1603 is welded between the first wing beam 1602 and the first lower reinforcing plate 1605, the support function is achieved, a first lock back plate 1606 is welded on one side of two first wing beams 1602, a first lock plate 1608 is welded on the top of the first lock back plate 1606, two first lock support plates 1607 are welded on the bottom of the first lock plate 1608, a first middle lock 1609 is fixedly installed on the position of the first lock plate 1608, six eighth installation holes are formed in one side of the first installation plate 1601 and are arranged in a mode of upper four and lower two, the upper four eighth installation holes are divided into a left group and a right group and are grouped into two groups, the circle centers of the lower two eighth installation holes are located in the center position of the circle center connecting line of the two eighth installation holes of each group, six eighth through holes matched with the eighth installation holes are formed in one side of the web 6, when a worker installs the first middle lock beam 16, the four first middle lock beams 16 are respectively placed on two sides of the web 6, so that the eighth installation holes on the first installation plate 1601 are aligned with the eighth through holes on the web 6, and screwing in the eighth bolt group and screwing tightly.

Wherein, referring to fig. 27, 28 and 29, six second middle lock beams 17 are all fixedly mounted on the frame by a ninth bolt set, and the six second middle lock beams 17 are all located between the four first middle lock beams 16, the second middle lock beams 17 include a second mounting plate 1701, a second wing 1702, a second diagonal brace 1703, a second upper reinforcing plate 1704, a second lock back plate 1705, a second lock support plate 1706, a second lock plate 1707 and a second middle lock 1708, the second mounting plate is in a rectangular plate structure, the second upper reinforcing plate 1704 is in a U-shaped structure and is welded above one side of the second mounting plate 1701, two second wings 1702 are welded to one side of the second mounting plate 1701, one side of the second wing is welded to an open side of the second upper reinforcing plate 1704, the second diagonal brace 1703 is welded between the second wings 1702 and the second mounting plate 1701 for supporting, one side of the two second wings 1702 is welded with the second lock back plate 1705, the welding of second tool to lock backplate 1705's top has a second tool to lock board 1707, the welding of second tool to lock board 1707's bottom has two second tool to lock backup pads 1706, tool to lock 1708 in the position fixed mounting of second tool to lock board 1707 has a second, two rows of ninth mounting holes have been seted up to one side of second mounting panel 1701, a plurality of and ninth mounting hole complex ninth through-hole has been seted up to one side of web 6, when the tool to lock roof beam 17 in the staff installation second, place tool to lock roof beam 17 respectively in six seconds in two webs 6's both sides, make ninth mounting hole on the second mounting panel 1701 align with the ninth through-hole on the web 6, it can to twist ninth bolt group and screw up.

In conclusion, the travelling mechanism, the supporting device 7, the side protecting device, the rear protecting device, the side marker lamp, the spare tire rack 8 and the locking component of the semitrailer are all fixed on the frame in a bolt group connection mode, interference and influence do not exist when the semitrailer is disassembled, all the components can be disassembled during transportation, the space utilization rate is improved, only the damaged components can be disassembled when the components are damaged, rapid maintenance and replacement are achieved, and the semitrailer is high in practicability.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

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