CN112498396A

CN112498396A - Two-section type folding cab apron device

Info

Publication number: CN112498396A
Application number: CN202011490981.4A
Authority: CN
Inventors: 崔昭霞; 李文博; 程海鹰; 张文志; 那日苏; 杨玉龙
Original assignee: Inner Mongolia University of Technology
Current assignee: Inner Mongolia University of Technology
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-03-16

Abstract

The invention relates to a two-section type folding cab apron device which comprises a hydraulic winch 1, a cab apron 2, a gear 5, a cam 9, a rack 10, a gear rotating shaft 13, a lower cab apron 14, a thrust hydraulic cylinder 11, a steel wire lock 16 and a hydraulic cylinder 17. The folding cab apron device realizes the complete folding, overlapping and unfolding of the upper cab apron and the lower cab apron through the hydraulic winch 1, the steel wire lock 16, the gear 5 and the rack 10. The structure is compact, the occupied space is small, and the large load can be borne.

Description

Two-section type folding cab apron device

Technical Field

The invention relates to a two-section type folding ferry plate device applied to a transportation bearing platform.

Background

The ferry plate commonly used in the auxiliary vehicle loading operation is also called as a ladder stand and a gangway. To save space and be portable, folding ferry boards have become a research and application hotspot in the field. However, the folding ferry plate in the prior art has many disadvantages, such as that a complicated mechanical structure is required for realizing the folding action, or the folding ferry plate occupies the upper space of the flat car when being folded, reduces the transportation amount of the carrying flat car, and can realize the loading task only by a special slope platform. In addition, the bearing capacity is a difficulty which restricts the application of the folding type cab apron. When national defense heavy vehicles such as tanks, armored vehicles, communication vehicles and the like are loaded and unloaded on the railway transportation bearing platform, the requirements on safety and efficiency are extremely high. But the main mode that adopts at present still is that manual hand-held sleeper builds up interim cab apron or uses the loading and unloading of railway crane. The method not only needs a large amount of labor force, but also has large workload, low efficiency and long operation time; or the large-tonnage cranes are needed to cooperate, large-scale equipment is occupied, and time and labor are wasted during batch transportation.

Therefore, a long cab apron which can be completely folded, occupies a small space, does not affect the carrying of other cargos when being folded and zoomed, and can bear larger load is needed to solve the technical problems.

Disclosure of Invention

The invention aims to provide a cab apron device which can bear larger load and can be completely folded.

The utility model provides a folded cab apron device of two segmentations, includes mount pad 4, two cab apron 2, two cab apron 14, thrust hydraulic cylinder 11 down, fold paper 15 and pneumatic cylinder 17, its characterized in that: the lower ferry plate 14 is completely folded and unfolded with the upper ferry plate 2 through the hydraulic winch 1 fixed on the mounting seat 4 and the steel wire lock 16 thereof, the rack 10 fixedly connected with the thrust hydraulic cylinder 11 and the gear 5 meshed with the rack 10.

Furthermore, the two-section type folding ferry plate device further comprises a fixed pin shaft 6, a cam 9 and a gear rotating shaft 13. The thrust hydraulic cylinder 11 is positioned between the two upper cab apron 2, one end of the thrust hydraulic cylinder is connected on the fixed pin 6, and one end of the hydraulic rod is fixedly connected with the rack 10. The gear 5 is mounted on a gear shaft 13. The cam 9 is an arc structure with a through hole at one end, and is fixed by welding through a gear rotating shaft 13.

Further, the two-section type folding ferry plate device further comprises a baffle plate 12. The baffle plate 12 and the lower cab apron 14 on both sides are fixedly connected into a rigid body and are integrally concave.

Further, the wire lock 16 of the hydraulic winch 1 is connected to the outer edge position of the lower end of the lower ferry plate 14.

Furthermore, the two-section type folding cab apron device further comprises a protection elbow 7 and a positioning pin shaft 8. One end of the protection elbow 7 is fixed at the lower end of the upper transition plate 2, and the other end thereof can be connected and fixed with the lower transition plate 14 through a positioning pin shaft 8 and a bolt.

Furthermore, the thickness of the baffle 12 is smaller than that of the lower transition plate 14, so as to ensure that the connection between the elbow guard 7 and the lower transition plate 14 is not obstructed.

Furthermore, the number of guard elbows 7 may be 2-6.

Further, the upper cab apron 2 and the lower cab apron 14 are formed by welding a plurality of h-shaped steel bars side by side or are made by paving steel plates on a steel frame, and anti-skid reinforcing ribs or anti-skid convex lines are arranged on the upper surfaces of the h-shaped steel bars and the steel frame.

The application the folded cab apron device of two segmentations can bear the heavy vehicle more than 50 tons, especially crawler-type heavy vehicle, like tank etc.. The folding-unfolding-folding-type loading platform is simple in structure, the loading space of the transportation loading platform is not affected after the upper cab apron and the lower cab apron are completely folded and overlapped, and the unfolding and folding processes are efficient, safe and reliable.

The cam 9 is matched with the gear 5 and the rack 10, plays a role of jacking the baffle 12, and simultaneously can ensure that the lower cab apron 14 can be reset at any time after being unfolded, so that the interference generated when heavy vehicles pass through the cab apron is avoided. If a hydraulic cylinder which is common in the field is adopted to drive the upper cab apron and the lower cab apron to be folded and unfolded at the same position, one end of a hydraulic rod of the hydraulic cylinder needs to be hinged with the baffle 12, and the hydraulic cylinder cannot be retracted after the lower cab apron 14 is completely unfolded, so that interference can occur when a heavy vehicle passes through the cab apron; when the lower ferry plate 14 is folded, the upper ferry plate and the lower ferry plate are positioned on the same straight line, and the pulling direction of the hydraulic cylinder is collinear with the upper ferry plate and the lower ferry plate, so that effective component force cannot be formed, and the lower ferry plate is difficult to fold.

Drawings

Fig. 1 is a front view of a two-segment folding ferry plate device according to the present invention.

Fig. 2 is a left side view of the two-segment folding ferry plate device of the present invention.

Fig. 3 is a top view of the two-segment folding ferry plate device of the present invention.

Fig. 4 is a partially enlarged view of fig. 2.

Fig. 5 is a schematic structural diagram of the cam 9 according to the present invention.

Detailed Description

The invention is further described with reference to the accompanying drawings:

in the drawings of the present application:

the hydraulic winch comprises a hydraulic winch 1, an upper transition plate 2, a rotating shaft 3 (the original position of 17 is also marked with 3), a mounting seat 4, a gear 5, a fixed pin shaft 6, a protection elbow 7, a positioning pin shaft 8, a cam 9, a rack 10, a thrust hydraulic cylinder 11, a baffle plate 12, a gear rotating shaft 13, a lower transition plate 14, a hinge 15, a steel wire lock 16 and a hydraulic cylinder 17.

Example 1

As shown in fig. 1 to 3, the hydraulic winch 1 is fixed to the upper surface of the mount 4. One end of the upper ferry plate 2 is hinged with the mounting seat 4 through a rotating shaft 3, and the other end is connected with the lower ferry plate 14 through a hinge 15. One end of the hydraulic cylinder 17 is hinged with the mounting seat 4 through the rotating shaft 3, and one end of a hydraulic rod of the hydraulic cylinder is hinged with the upper cab apron 2. The thrust hydraulic cylinder 11 is positioned between the two upper cab apron 2, one end of the thrust hydraulic cylinder is connected on the fixed pin 6, and one end of the hydraulic rod is fixedly connected with the rack 10. The gear 5 is arranged on the gear rotating shaft 13, and the gear 5 is meshed with the rack 10. The cam 9 is an arc structure with a through hole at one end, and is fixed by welding through a gear rotating shaft 13. The baffle plate 12 and the lower cab apron 14 on both sides are fixedly connected into a rigid body and are integrally concave. The wire lock 16 of the hydraulic winch 1 is connected to the outer edge position of the lower end of the lower ferry plate 14. One end of the protection elbow 7 is fixed on the lower end of the upper cab apron 2.

This application folding cab apron is under initial folded condition, goes up cab apron 2 and cab apron 14 complete folding coincidence and perpendicular to transportation load-bearing platform and ground down. In the working state, when the folded ferry plate needs to be unfolded, the hydraulic cylinder 17 is contracted to pull the upper ferry plate 2 and the lower ferry plate 14 to gradually incline towards the ground until an included angle of about 30 degrees is formed between the upper ferry plate and the ground. Then, the thrust hydraulic cylinder 11 contracts to pull the rack 10 to move, and further drives the gear 5 meshed with the rack 10 to rotate. The rotation of the gear 5 drives the cam 9 to rotate and jack up the baffle 12, and the lower cab apron 14 is overturned and unfolded outwards around the gear rotating shaft 13. When the included angle between the upper transition plate 2 and the lower transition plate 14 is larger than 60 degrees, the thrust hydraulic cylinder 11 stops contracting. At this time, the wire lock 16 in the hydraulic winch device 1 is released, so that the lower cab apron 14 continues to perform the outward turning movement by means of the self-weight until the lower end of the lower cab apron touches the ground. And then the other end of the protection elbow 7 is connected and fixed with the lower transition plate 14 through the positioning pin shaft 8. Finally, the upturned cam 9 is retracted by adjusting the extension and contraction of the hydraulic cylinder 17.

When the loading and unloading of the vehicle are finished and the cab apron needs to be folded, the hydraulic cylinder 17 drives the unfolded upper cab apron and the unfolded lower cab apron to integrally rotate upwards by about 60 degrees, then the fixing of the protection elbow 7 is released, and then the lower cab apron 14 is pulled by the steel wire lock 16 to turn inwards until the upper cab apron 2 is completely overlapped. The hydraulic cylinder 17 pushes the upper and lower cab apron integrally to a state of 90 degrees with the transportation bearing platform and the ground.

The foregoing is a detailed description of the embodiments of the invention, rather than a detailed description of the invention, and it will be appreciated by those skilled in the art that various modifications, additions and substitutions can be made to the embodiments described without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a folded cab apron device of two segmentations, includes mount pad (4), two cab apron (2), two cab apron (14), thrust hydraulic cylinder (11), fold paper (15) and pneumatic cylinder (17) down, its characterized in that: the lower ferry plate (14) is completely folded, superposed and unfolded with the upper ferry plate (2) through a hydraulic winch (1) fixed on the mounting seat (4) and a steel wire lock (16) thereof, a rack (10) fixedly connected with the thrust hydraulic cylinder (11) and a gear (5) meshed with the rack (10).

2. The two-ended folding ferry plate apparatus of claim 1, wherein: the two-section type folding ferry plate device further comprises a fixed pin shaft (6), a cam (9) and a gear rotating shaft (13); the thrust hydraulic cylinder (11) is positioned between the two upper cab apron plates (2), one end of the thrust hydraulic cylinder is connected to the fixed pin shaft (6), and one end of a hydraulic rod of the thrust hydraulic cylinder is fixedly connected with the rack (10); the gear (5) is arranged on the gear rotating shaft (13); the cam (9) is an arc structure with a through hole at one end, and is fixed by welding through penetrating the gear rotating shaft (13).

3. A two-end folding ferry plate assembly, according to claim 1 or 2, wherein: the two-section type folding ferry plate device further comprises a baffle (12); the baffle plate (12) is fixedly connected with the lower cab apron (14) at two sides to form a rigid body, and the whole body is concave.

4. A two-end folding ferry plate assembly, according to claim 1 or 2, wherein: the thickness of the baffle plate (12) is smaller than that of the lower transition plate (14).

5. The two-ended folding ferry plate apparatus of claim 4, wherein: and a wire lock (16) of the hydraulic winch (1) is connected to the outer edge position of the lower end of the lower ferry plate (14).

6. A two-end folding ferry plate assembly, according to claim 1, 2 or 5, wherein: the two-section type folding ferry plate device further comprises a protection elbow (7) and a positioning pin shaft (8); one end of the protective elbow (7) is fixed at the lower end of the upper transition plate (2), and the other end thereof can be connected and fixed with the lower transition plate (14) through a positioning pin shaft (8) and a bolt.

7. The two-ended folding ferry plate apparatus of claim 6, wherein: the number of protective elbows (7) can be between 2 and 6.

8. A two-end folding ferry plate assembly, as claimed in claim 1, 2, 5 or 7, wherein: the upper cab apron (2) and the lower cab apron (14) are formed by welding a plurality of I-shaped steel bars side by side or are made by paving steel plates on a steel frame, and anti-skid reinforcing ribs or anti-skid convex lines are arranged on the upper surfaces of the steel frame.