CN210591274U

CN210591274U - Flat-bed semitrailer suspension device

Info

Publication number: CN210591274U
Application number: CN201921716516.0U
Authority: CN
Inventors: 邓承召; 邓成帅; 王目成; 李祥生
Original assignee: Liangshan Kaiyuan Transportation Equipment Manufacturing Co Ltd
Current assignee: Liangshan Kaiyuan Transportation Equipment Manufacturing Co Ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-05-22
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a flat-bed semi-trailer linkage belongs to the engineering machine tool field. A flat-plate semitrailer suspension device comprises a longitudinal beam, wherein the bottom of the longitudinal beam is fixedly connected with two suspension brackets which are symmetrically distributed, and a spring steel plate is supported between the suspension brackets; the utility model discloses link two independent buffer unit, overcome two buffer unit that cause because of the atress inequality and used uneven problem, improve the atress homogeneity of longeron.

Description

Flat-bed semitrailer suspension device

Technical Field

The utility model relates to an engineering machine tool technical field especially relates to a flat-bed semitrailer linkage.

Background

The semitrailer suspension device is one of the main parts of a semitrailer, and the semitrailer axle moving part and the semitrailer girder are effectively, reasonably and firmly connected by the semitrailer suspension device.

In the prior art, the Chinese patent with the patent application number of CN201820576387.9 discloses a semi-trailer suspension device, which comprises suspension brackets fixed on a vehicle longitudinal beam, a spring steel plate is supported between the two suspension brackets, the upper parts of both sides of the spring steel plate are respectively provided with a buffer unit, the buffer units comprise an L-shaped fixing frame and a guide rod, the fixing frame is fixed on the longitudinal beam, the buffer units arranged in the semi-trailer suspension device can provide direct buffer protection for the spring steel plate, when the semi-trailer is loaded and runs on a bumpy road, the second spring is extruded to provide downward buffer force for the spring steel plate under the condition that the spring steel plate moves upward, under the condition that the spring steel plate moves downward, the first spring is extruded to provide upward buffer force for the spring steel plate, and the damage and fracture of the spring steel plate caused by the large vertical vibration of the spring steel plate are avoided, the service life and the driving safety of the vehicle are improved, the defects still exist, the two buffer units work independently, the relevance is poor, the stress of the two buffer units is different, and the stress uniformity of the longitudinal beam is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem in the prior art and providing a flat-bed semi-trailer linkage.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a flat-bed semi-trailer suspension device comprises a longitudinal beam, wherein the bottom of the longitudinal beam is fixedly connected with two suspension brackets which are symmetrically distributed, a spring steel plate is supported between the suspension brackets, the bottom of the longitudinal beam is also connected with a U-shaped fixing seat which is positioned between the suspension brackets, the opening of the U-shaped fixing seat is rotatably connected with a rotating rod, the outer wall of the rotating rod is sleeved with two first lantern rings and a second lantern ring, the second lantern ring is arranged between the first lantern rings, a torsion spring which is sleeved on the wall of the rotating rod is connected between the first lantern ring and the second lantern ring, the outer wall of the first lantern ring is connected with a U-shaped connecting piece, the top of the spring steel plate is connected with symmetrically distributed buffer units, the telescopic ends of the two buffer units are hinged with telescopic rods, and the ends of the two telescopic rods, which are far away from, and a damping base plate is connected to the joint of the buffer unit and the spring steel plate.

Preferably, the buffer unit comprises an L-shaped fixing frame and a guide rod, wherein a vertical section of the L-shaped fixing frame is fixed on the longitudinal beam, a bottom fixed damping backing plate of the guide rod is arranged, the top end of the guide rod penetrates through a horizontal section of the L-shaped fixing frame to extend upwards, a first limit ring piece is fixedly connected with the extension end of the guide rod, a second limit ring piece is sleeved on the guide rod below the L-shaped fixing frame, a first spring is sleeved on the guide rod between the first limit ring piece and the L-shaped fixing frame, and a second spring is sleeved on the guide rod between the second limit ring piece and the L-shaped fixing frame.

Preferably, the damping backing plate is connected at the joint of the guide rod and the spring steel plate.

Preferably, the top of the damping shim plate is in a horizontal state.

Preferably, the middle section of the spring steel plate is connected with a connecting seat through a hoop, and a connecting rod is connected between the connecting seat and the suspension bracket.

Compared with the prior art, the utility model provides a flat-bed trailer linkage possesses following beneficial effect:

1. this semitrailer hanger device, because of adopting damping backing plate and buffer unit, overcome the problem that spring steel sheet anti-seismic performance is bad, and then reach the function to spring steel sheet buffering protection.

2. This semitrailer hanger device, because of adopting telescopic link and torsion spring to get up two independent buffer unit relations, overcome two buffer unit that cause because of the atress inequality and used uneven problem, improve the atress homogeneity of longeron.

3. The suspension device of the flat-bed semi-trailer further improves the buffer performance of the spring steel plate through the damping backing plate.

Drawings

Fig. 1 is a schematic structural view of a suspension device of a flatbed semitrailer provided by the utility model;

fig. 2 is an enlarged schematic structural view of a portion a in fig. 1 of a suspension device for a flatbed semitrailer according to the present invention;

fig. 3 is a front view of the utility model provides a flat-bed semi-trailer suspension.

In the figure: 1. a stringer; 2. a suspension bracket; 3. a spring steel plate; 4. a U-shaped fixed seat; 5. rotating the rod; 6. a first collar; 7. a second collar; 8. a torsion spring; 9. a U-shaped connecting piece; 10. a telescopic rod; 11. a damping backing plate; 12. an L-shaped fixing frame; 13. a guide bar; 14. a first limit ring sheet; 15. a second limit ring sheet; 16. a first spring; 17. a second spring; 18. a connecting seat; 19. a connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a flat-bed semi-trailer suspension device comprises a longitudinal beam 1, the bottom of the longitudinal beam 1 is fixedly connected with two symmetrically distributed suspension brackets 2, a spring steel plate 3 is supported between the suspension brackets 2, the bottom of the longitudinal beam 1 is also connected with a U-shaped fixed seat 4 positioned between the suspension brackets 2, the opening of the U-shaped fixed seat 4 is rotatably connected with a rotating rod 5, the outer wall of the rotating rod 5 is sleeved with two first lantern rings 6 and a second lantern ring 7, the second lantern ring 7 is arranged between the first lantern rings 6, a torsion spring 8 sleeved on the rod wall of the rotating rod 5 is connected between the first lantern rings 6 and the second lantern rings 7, the outer wall of the first lantern ring 6 is connected with a U-shaped connecting piece 9, the top of the spring steel plate 3 is connected with symmetrically distributed buffer units, the telescopic ends of the two buffer units are both hinged with telescopic rods 10, one ends of the two telescopic rods 10 far, the joint of the buffer unit and the spring steel plate 3 is connected with a damping backing plate 11.

The buffer unit comprises an L-shaped fixing frame 12 and a guide rod 13, the vertical section of the L-shaped fixing frame 12 is fixed on the longitudinal beam 1, the bottom end of the guide rod 13 is fixed on a damping cushion plate 11, the top end of the guide rod 13 penetrates through the horizontal section of the L-shaped fixing frame 12 to extend upwards, the extending end of the guide rod 13 is fixedly connected with a first limiting ring piece 14, a second limiting ring piece 15 is sleeved on the guide rod 13 below the L-shaped fixing frame 12, a first spring 16 is sleeved on the guide rod 13 between the first limiting ring piece 14 and the L-shaped fixing frame 12, and a second spring 17 is sleeved on the guide rod 13 between the second limiting ring piece 15 and the L-shaped fixing frame 12, so that the buffer protection function of the spring steel plate 3 is realized.

The damping shim plate 11 is connected at the intersection of the guide rod 13 and the spring steel plate 3.

Referring to fig. 1 and 3, the top of the damping shim plate 11 is in a horizontal state.

Referring to fig. 1 and 3, the middle section of the spring steel plate 3 is connected with a connecting seat 18 through a hoop, and a connecting rod 19 is connected between the connecting seat 18 and the suspension bracket 2, so that the installation stability of the spring steel plate 3 is improved.

In the utility model, when the semitrailer is loaded and runs on a bumpy road, the second spring 17 is extruded to provide downward buffer force for the spring steel plate 3 under the condition that the spring steel plate 3 moves upwards, the guide rod 13 is driven to move upwards at the same time, the telescopic rod 10 is driven to extend at the same time, the torsion spring 8 is tightened or loosened, the buffer protection capacity is improved, the stress uniformity of the two buffer units is improved, the durability of the buffer units is further improved, the first spring 16 is extruded to provide upward buffer force for the spring steel plate 3 under the condition that the spring steel plate 3 moves downwards, the guide rod 13 moves downwards at the same time, the telescopic rod 10 is driven to contract at the same time, the torsion spring 8 is tightened or loosened, the stress uniformity of the longitudinal beam is improved, the buffer protection capacity is improved, the stress uniformity of the two buffer units is improved, and the damage and fracture of the spring steel plate 3 caused by the vertical vibration of the spring steel plate 3 are, the service life and the driving safety of the vehicle are improved, and the installation stability of the spring steel plate 3 is improved through the connecting rod 19.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a semitrailer hanger, includes longeron (1), the bottom fixedly connected with of longeron (1) hangs support (2) of two symmetric distributions, it has spring steel sheet (3) to support between hanging support (2), its characterized in that, the bottom of longeron (1) still is connected with U type fixing base (4) that are located between hanging support (2), the opening part of U type fixing base (4) rotates and is connected with dwang (5), two first lantern rings (6) and one second lantern ring (7) that dwang (5) outer wall cover has, and between first lantern ring (6) is arranged in to second lantern ring (7), be connected with torque spring (8) of cover at dwang (5) pole wall between first lantern ring (6) and second lantern ring (7), the outer wall connection of first lantern ring (6) has U type connecting piece (9), spring plate (3) top is connected with the buffering unit of symmetric distribution, two the flexible end of buffering unit all articulates there is telescopic link (10), two the one end that buffering unit was kept away from in telescopic link (10) links to each other with second lantern ring (7) and U type connecting piece (9) are fixed respectively, the handing-over department of buffering unit and spring plate (3) is connected with damping backing plate (11).

2. Semitrailer suspension arrangement according to claim 1, characterised in that the damping unit comprises an L-shaped holder (12) and a guide rod (13), the vertical section of the L-shaped fixing frame (12) is fixed on the longitudinal beam (1), the bottom end of the guide rod (13) is fixed on the damping backing plate (11), the top end of the guide rod (13) passes through the horizontal section of the L-shaped fixed frame (12) and extends upwards, a first limit ring piece (14) is fixedly connected with the extending end of the guide rod (13), a second limit ring piece (15) is sleeved on the guide rod (13) positioned below the L-shaped fixing frame (12), a first spring (16) is sleeved on the guide rod (13) between the first limit ring piece (14) and the L-shaped fixed frame (12), and a second spring (17) is sleeved on the guide rod (13) between the second limit ring piece (15) and the L-shaped fixed frame (12).

3. A semitrailer suspension arrangement according to claim 2, characterised in that the damping shim plate (11) is connected at the junction of the guide rod (13) and the spring steel plate (3).

4. A semitrailer hanger arrangement according to claim 3, characterised in that the damping shim plate (11) is horizontal at its top.

5. A semitrailer hanger arrangement according to any one of claims 1 to 4, characterised in that the spring steel plate (3) is connected at its mid-section to a coupling socket (18) by means of a hoop, and that a connecting rod (19) is connected between the coupling socket (18) and the hanger bracket (2).