Semitrailer supporting leg

Abstract

The utility model discloses a semitrailer supporting leg, and relates to the technical field of semitrailers. The semitrailer buffering device comprises a bottom frame, a buffering mechanism is arranged at the lower end of the bottom frame and used for buffering the semitrailer, a hydraulic mechanism is fixedly arranged at the upper end of the bottom frame and used for supporting the semitrailer, the buffering mechanism comprises two damping rods, damping springs are arranged on the outer surfaces of the damping rods in a sleeved mode, and the damping springs are arranged on the damping rods in a sleeved mode. Two damping rods are arranged on the bottom frame, two damping cylinders are arranged on the outer surfaces of the two damping rods, rotating frames are arranged at the lower ends of the four damping cylinders in a rotating mode, a buffer plate is arranged at the lower ends of every two rotating frames in a rotating mode, and limiting plates are fixedly arranged on the two sides of the bottom frame. According to the semitrailer supporting leg, through the hydraulic mechanism, the semitrailer can be effectively buffered, the semitrailer can be effectively supported through the hydraulic mechanism, and therefore the semitrailer supporting leg can be effectively supported.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to a semi-trailer outrigger. Background Art

[0002] Since the axle of the semi-trailer is located behind its center of gravity, the front of the semi-trailer will fall if there is no tractor connection or other auxiliary support. At the same time, since the current semi-trailers are usually semi-trailers with more than two axles, the vehicle weight is relatively large, and it is difficult to lift the front of the semi-trailer manually. Therefore, support legs need to be arranged on both sides in front of the center of gravity of the semi-trailer.

[0003] However, the prior art still has the following problems:

[0004] Firstly, when the semi-trailer outriggers in the prior art assist the semi-trailer in supporting, most of the semi-trailer outriggers cannot effectively provide buffering, which may cause damage to the vehicle structure when the semi-trailer outriggers are supporting.

[0005] Secondly, when the semi-trailer outriggers of the prior art assist the semi-trailer in supporting, most of the semi-trailer outriggers cannot effectively provide support, resulting in a poor supporting effect of the semi-trailer outriggers and being unable to well assist the semi-trailer in use.

[0006] In view of the above problems, the inventor proposes a semi-trailer outrigger to solve the above problems. Utility Model Content

[0007] In order to solve the problem that most semi-trailer outriggers cannot effectively perform buffering and most semi-trailer outriggers cannot effectively perform supporting; the purpose of the utility model is to provide a semi-trailer outrigger.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: a semi-trailer leg, including a chassis, a buffer mechanism is provided at the lower end of the chassis, the buffer mechanism is used to buffer the semi-trailer, a hydraulic mechanism is fixedly provided at the upper end of the chassis, the hydraulic mechanism is used to support the semi-trailer, the buffer mechanism includes two damping rods, the outer surfaces of the damping rods are sleeved with damping springs, the outer surfaces of the two damping rods are provided with two damping cylinders, the lower ends of the four damping cylinders are rotatably provided with rotating frames, the lower ends of every two rotating frames are jointly rotatably provided with buffer plates, and limit plates are fixedly provided on both sides of the chassis.

[0009] Preferably, the hydraulic mechanism includes a hydraulic cylinder, a hydraulic rod is slidably provided on the inner surface of the hydraulic cylinder, a plurality of sliding rods are fixedly provided on the upper end of the base frame, a sliding plate is commonly fixedly provided on the upper ends of the plurality of sliding rods, support rods are slidably provided on the inner surfaces of the plurality of sliding rods, and a support plate is commonly fixedly provided on the upper ends of the plurality of support rods.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The utility model uses a buffer mechanism to effectively buffer the semitrailer when the semitrailer needs to use the semitrailer legs for support, thereby reducing damage to the vehicle body structure, thereby achieving effective buffering of the semitrailer legs;

[0012] 2. The utility model uses a hydraulic mechanism to effectively support the semitrailer when the semitrailer needs to use the semitrailer legs for support, which is convenient for the semitrailer to unload or load goods, thereby achieving effective support of the semitrailer legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 It is a schematic cross-sectional view of the buffer mechanism structure of the utility model.

[0016] Figure 3 This is a schematic diagram of the hydraulic mechanism structure of the utility model.

[0017] In the figure: 1, base frame; 2, buffer mechanism; 3, hydraulic mechanism; 20, damping rod; 21, damping spring; 22, damping groove; 23, limit plate; 24, limit groove; 25, limit clamp; 26, buffer plate; 27, rotating frame; 28, damping cylinder; 30, hydraulic cylinder; 31, cooling fin; 32, heat pipe; 33, sliding rod; 34, sliding plate; 35, support rod; 36, support plate; 37, hydraulic rod; 38, fixing ring; 39, fixing groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example: Figure 1-3As shown, the utility model provides a semi-trailer leg, including a chassis 1, a buffer mechanism 2 is provided at the lower end of the chassis 1, a hydraulic mechanism 3 is fixedly provided at the upper end of the chassis 1, the buffer mechanism 2 includes two damping rods 20, the outer surfaces of the damping rods 20 are sleeved with damping springs 21, the outer surfaces of the two damping rods 20 are provided with two damping cylinders 28, the lower ends of the four damping cylinders 28 are rotatably provided with a rotating frame 27, the lower ends of every two rotating frames 27 are jointly rotatably provided with a buffer plate 26, and both sides of the chassis 1 are fixedly provided with a limit plate 23. When the buffer mechanism 2 is subjected to a force from above, the buffer plate 26 will drive the rotating frame 27 at the upper end to rotate, so that the rotating frame 27 can move the damping cylinder 28 while the lower end of the damping cylinder 28 rotates, so that the damping cylinder 28 can slide on the outer surface of the damping rod 20 and can be buffered by the damping spring 21, thereby achieving the purpose of effective buffering of the semi-trailer leg.

[0020] A damping groove 22 is provided on one side of the four damping cylinders 28, and the inner surfaces of every two damping grooves 22 are respectively slidably fitted with the outer surfaces of the two damping rods 20. A limiting clamp 25 is fixedly provided on one side of the four damping cylinders 28. A limiting groove 24 is provided on one side of the two limiting plates 23 for use with the four limiting clamps 25 respectively. The damping cylinder 28 can slide on the outer surface of the damping rod 20 through the damping groove 22, and the damping cylinder 28 can slide and limit in the limiting groove 24 on the limiting plate 23 through the limiting clamp 25.

[0021] The two damping rods 20 are symmetrically distributed at the lower end of the base frame 1, so that the buffer mechanism 2 can be more evenly stressed.

[0022] The hydraulic mechanism 3 includes a hydraulic cylinder 30, the inner surface of which is slidably provided with a hydraulic rod 37, a plurality of sliding rods 33 are fixedly provided at the upper end of the base frame 1, a sliding plate 34 is fixedly provided at the upper ends of the plurality of sliding rods 33, support rods 35 are slidably provided on the inner surfaces of the plurality of sliding rods 33, and a support plate 36 is fixedly provided at the upper ends of the plurality of support rods 35. Through the hydraulic mechanism 3, the hydraulic cylinder 30 cooperates with the hydraulic rod 37 to be extended and retracted upward, so that the hydraulic rod 37 can drive the support rod 35 at the lower end of the support plate 36 to slide on the inner surface of the sliding rod 33, thereby supporting the semi-trailer, and the sliding rod 33 can be fixed to the hydraulic cylinder 30 through the sliding plate 34, thereby improving the stability of the overall structure, thereby achieving the purpose of effectively supporting the semi-trailer legs.

[0023] A plurality of heat dissipation fins 31 are fixedly provided on the outer surface of the hydraulic cylinder 30, and a plurality of heat conduction pipes 32 are fixedly provided inside the plurality of heat dissipation fins 31. A fixing ring 38 is fixedly provided on the upper end of the hydraulic cylinder 30 and the hydraulic rod 37, and a plurality of fixing grooves 39 are provided on the upper ends of the two fixing rings 38. The hydraulic cylinder 30 can effectively dissipate heat during operation through the heat dissipation fins 31 and the heat conduction pipes 32, thereby improving the service life of the hydraulic structure. The hydraulic cylinder 30 and the hydraulic rod 37 can be fixed to the sliding plate 34 and the support plate 36 respectively through the fixing ring 38 and the fixing groove 39.

[0024] Four sliding rods 33 are provided, and the four sliding rods 33 are distributed in a rectangular array at the upper end of the base frame 1 . The sliding rods 33 are distributed in a rectangular array, which can effectively increase the force-bearing area of ​​the hydraulic mechanism 3 .

[0025] Working principle: When the buffer mechanism 2 is subjected to a force from above, the buffer plate 26 drives the rotating frame 27 at the upper end to rotate, so that the rotating frame 27 can move the damping cylinder 28 while the lower end of the damping cylinder 28 rotates, so that the damping cylinder 28 can slide on the outer surface of the damping rod 20, and can be buffered by the damping spring 21, so as to achieve the purpose of effective buffering of the semi-trailer outrigger;

[0026] A damping groove 22 is provided on one side of each of the four damping cylinders 28, and the inner surfaces of each two damping grooves 22 are respectively slidably fitted with the outer surfaces of the two damping rods 20. A limiting clamping plate 25 is fixedly provided on one side of each of the four damping cylinders 28. A limiting groove 24 used in conjunction with the four limiting clamping plates 25 is provided on one side of each of the two limiting plates 23. The damping cylinder 28 can slide on the outer surface of the damping rod 20 through the damping groove 22, and the damping cylinder 28 can slide and limit in the limiting groove 24 on the limiting plate 23 through the limiting clamping plate 25.

[0027] The two damping rods 20 are symmetrically distributed at the lower end of the base frame 1, so that the buffer mechanism 2 can be more uniform when subjected to force;

[0028] Through the hydraulic mechanism 3, the hydraulic cylinder 30 cooperates with the hydraulic rod 37 to be extended and retracted upward, so that the hydraulic rod 37 can drive the support rod 35 at the lower end of the support plate 36 to slide on the inner surface of the sliding rod 33, so as to support the semi-trailer, and the sliding rod 33 can be fixed to the hydraulic cylinder 30 through the sliding plate 34, thereby improving the stability of the overall structure, thereby achieving the purpose of effectively supporting the semi-trailer outriggers;

[0029] The outer surface of the hydraulic cylinder 30 is fixed with a plurality of heat dissipation fins 31, and a plurality of heat conduction pipes 32 are fixedly arranged inside the plurality of heat dissipation fins 31. The upper ends of the hydraulic cylinder 30 and the hydraulic rod 37 are fixed with fixing rings 38, and the upper ends of the two fixing rings 38 are provided with a plurality of fixing grooves 39. The hydraulic cylinder 30 can effectively dissipate heat during operation through the heat dissipation fins 31 and the heat conduction pipes 32, thereby improving the service life of the hydraulic structure. The hydraulic cylinder 30 and the hydraulic rod 37 can be fixed to the sliding plate 34 and the support plate 36 respectively through the fixing rings 38 and the fixing grooves 39;

[0030] Four sliding rods 33 are provided, and the four sliding rods 33 are distributed in a rectangular array at the upper end of the base frame 1 . The sliding rods 33 are distributed in a rectangular array, which can effectively increase the force-bearing area of ​​the hydraulic mechanism 3 .

[0031] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A semi-trailer outrigger, comprising a chassis (1), characterized in that: A buffer mechanism (2) is provided at the lower end of the base frame (1), and a hydraulic mechanism (3) is fixedly provided at the upper end of the base frame (1); The buffer mechanism (2) comprises two damping rods (20), the outer surfaces of the damping rods (20) are sleeved with damping springs (21), the outer surfaces of the two damping rods (20) are provided with two damping cylinders (28), the lower ends of the four damping cylinders (28) are rotatably provided with rotating frames (27), the lower ends of every two rotating frames (27) are jointly rotatably provided with buffer plates (26), and both sides of the base frame (1) are fixedly provided with limit plates (23).

2. A semi-trailer outrigger as claimed in claim 1, characterized in that: The hydraulic mechanism (3) comprises a hydraulic cylinder (30), the inner surface of which is slidably provided with a hydraulic rod (37), the upper end of the base frame (1) is fixedly provided with a plurality of sliding rods (33), the upper ends of the plurality of sliding rods (33) are commonly fixedly provided with a sliding plate (34), the inner surfaces of the plurality of sliding rods (33) are slidably provided with support rods (35), and the upper ends of the plurality of support rods (35) are commonly fixedly provided with a support plate (36).

3. A semi-trailer outrigger according to claim 1, characterized in that: A damping groove (22) is provided on one side of each of the four damping cylinders (28), and the inner surfaces of every two damping grooves (22) are slidably fitted with the outer surfaces of the two damping rods (20) respectively.

4. A semi-trailer outrigger as claimed in claim 1, characterized in that: A limiting clamping plate (25) is fixedly provided on one side of the four damping cylinders (28), and a limiting groove (24) is provided on one side of the two limiting plates (23) for use with the four limiting clamping plates (25).

5. A semi-trailer outrigger as claimed in claim 1, characterized in that: The two damping rods (20) are symmetrically distributed at the lower end of the base frame (1).

6. A semi-trailer outrigger as claimed in claim 2, characterized in that: A plurality of heat dissipation fins (31) are fixedly provided on the outer surface of the hydraulic cylinder (30), and a plurality of heat conduction pipes (32) are fixedly provided inside the plurality of heat dissipation fins (31).

7. A semi-trailer outrigger as claimed in claim 2, characterized in that: A fixing ring (38) is fixedly provided at the upper end of the hydraulic cylinder (30) and the hydraulic rod (37), and a plurality of fixing grooves (39) are provided at the upper end of the two fixing rings (38).

8. A semi-trailer outrigger as claimed in claim 2, characterized in that: Four sliding rods (33) are provided, and the four sliding rods (33) are distributed on the upper end of the base frame (1) in a rectangular array.

Images