JP6132313B2 - Trailer 16-wheel suspension system - Google Patents

Description

  The present invention relates to a trailer 16-wheel suspension system having 16 wheels suitable for loading various heavy machinery including heavy precision machines.

As a trailer for heavy machinery having a large number of wheels at the rear , there is a 16-wheel type as disclosed in Patent Document 1, for example.

As shown in FIGS. 7 and 8, the heavy machinery trailer 1 having 16 wheels has two shafts 2A and 2B at the rear of the trailer, and four axles 3A to 3A at each shaft position. 3D is provided, and two wheels W are mounted as a pair on both sides of the axles 3A to 3D, and the front axles 3A and 3C and the rear axles 3B and 3D are rotatable around their respective axes. Coupled by walking beams 4A and 4B, these walking beams 4A and 4B are rotatable on trunnion shafts 7A and 7B (see FIGS. 9A and 9B) inserted into brackets 6A and 6B fixed to the body frame 5 . It is configured to be installed.

  Such a 16-wheel suspension of a trailer carries large heavy machinery and the like, so there is no provision of a cushion member such as a leaf spring, and there is a problem that the cushioning property is inferior to that of a normal suspension. It was.

  In particular, as shown in FIG. 8, the shafts 2A and 2B are connected via a walking beam 4A or 4B. From the state shown in FIG. 9A, an object such as a stone on the road is moved to the axle 3A. 9B, the wheel W supported by the rear axle 3B is pushed down corresponding to the ride height of the front wheel W, as shown in FIG. 9B.

  That is, when the shafts 2A and 2B are connected via the walking beam 4A (4B), the influence received by the corresponding shaft 2A or 2B from one wheel W is directly transmitted to the other shaft and the vehicle body side. There was a problem.

  Further, as shown in FIG. 10, for example, when one of the eight wheels in the vehicle body width direction rides on (one-side ride), the vehicle body frame 5 is inclined in the vehicle body width direction.

  For this reason, the conventional trailer having the 16-wheel suspension structure cannot transport a heavy precision machine, for example.

JP-A-7-257265

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a trailer 16-wheel suspension system capable of transporting a wide variety of heavy objects including heavy precision machines. .

  That is, the above-described problems can be solved by the following embodiments.

(1) It is provided at the rear part of the trailer, and consists of four air suspension units in which eight wheels are arranged in one row in the vehicle body width direction and two rows in the vehicle body front-rear direction and a total of 16 wheels are mounted on each of the four wheels. The air suspension unit includes a support shaft provided on a vehicle body frame of a trailer so that a center axis thereof is in a vehicle body width direction and is horizontal, and one end is supported by the support shaft. And two beams can be arranged on both sides of the beam in the vehicle width direction, and above the beam, the axle of the wheels. the supporting shaft side of the 1 group of the braking device in position is disposed than the for the beam, on the opposite side of the position and the support shaft, the trailer shock absorber is connected to and arranged in the body frame A six-wheel suspension system, comprising a trunnion cylinder through which the wheel axle is inserted, one end of which is supported by the other end of the beam, and the other end of the trunnion block and the body frame The trunnion block is disposed in the longitudinal direction of the vehicle body in a plane parallel to the trunnion cylinder at a lower position of the trunnion cylinder, and the other end of the beam. A trunnion shaft connected coaxially therewith, a trunnion portion having a trunnion shaft and a trunnion shaft insertion portion through which the trunnion shaft is inserted, and two shock absorbers are provided. , One end of each trunnion block in the vehicle width direction at the lower position of the air bellows 16-wheel suspension system of the trailer, characterized in that it is connected to a side position.

Oite (2) (1), wherein the trunnion block is disposed in the vehicle body longitudinal direction rear side of the support shaft, wherein the air bellows, that are arranged in the vehicle body longitudinal direction rear side of the trunnion block Trailer 16-wheel suspension system.

(3) (2) In, the other end of the trunnion block provided trunnion flange, this trunnion flange, absorber bracket for supporting one end of the spring bracket and the shock absorber supporting a lower end of the air bellows The support shaft is supported on a lower side of the vehicle body frame by a support shaft bracket provided integrally therewith, and the other of the shock absorbers in the two air suspension units on the front side among the four units. The trailer is a 16-wheel suspension system for trailers, characterized in that an end is supported by the support shaft bracket in the two air suspension units on the rear side of the four units.

  According to the present invention, the front shaft and the rear shaft in the 16-wheel suspension system at the rear of the trailer are made independent so that 16 wheels can be mounted on each of the four air suspension units. The displacement of one of the rear shafts does not cause the displacement of the other shaft, and in the width direction of the vehicle body, the displacement of the vehicle body in the width direction when the wheel rides on one side does not occur. It has the effect of being able to carry a wide variety of heavy objects, including certain precision machines.

Vehicle side view showing a 16-wheel suspension system for a trailer according to an embodiment of the present invention Plan view showing a 16-wheel suspension system of the same embodiment The perspective view which shows the air suspension unit in the Example typically The perspective view which shows the same air suspension unit in the state which removed the axle part, the air bellows, and the shock absorber The perspective view which shows the air suspension unit of the Example in the state which removed the support shaft, the brake device, the axle, the trunnion block, and the spring bracket Rear view of the vehicle body schematically showing a state in which the wheels of the trailer equipped with the 16-wheel suspension according to the embodiment ride on one side. Vehicle side view schematically showing a trailer and a truck with a conventional 16-wheel suspension Plan view schematically showing the trailer and the truck Vehicle side view schematically showing normal state of the suspension Vehicle side view schematically showing the state of wheels and shafts when overcoming a step in the suspension Rear view of the car body schematically showing the state of the suspension when riding on one side

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  The 16-wheel suspension system 10 according to the embodiment of the present invention is provided at the rear part of the trailer 12, and includes 8 wheels in one row in the vehicle body width direction and 2 rows in total in the vehicle front-rear direction. It is composed of four air suspension units 14A, 14B, 16A and 16B having substantially the same structure.

  The front and rear air suspension units 14A and 14B on the left side in the vehicle body width direction among the four units will be described in detail. Note that the air suspension units 14A and 16A, and 14B and 16B have exactly the same structure, so the description of 16A and 16B is omitted.

The front air suspension unit 16A has a support shaft 20 provided on the vehicle body frame 18 of the trailer 12 so that the center axis is horizontal in the vehicle body width direction and horizontal, and one end supported by the support shaft 20, and the support shaft 20 _A trunnion block that includes a beam 22 that can swing in a vertical plane in the longitudinal direction of the vehicle body and a trunnion cylinder 24 through which an axle WA of the wheel W is inserted, and one end of which is supported by the other end of the beam 22. 26, an air bellows 28 mounted between the other end of the trunnion block 26 and the vehicle body frame 18, a lower end of the air bellows 28, one end connected to the trunnion block 26, and the other end to the vehicle body frame 18. And a shock absorber 30 connected to the.

  4 and 5, the trunnion block 26 is disposed in the longitudinal direction of the vehicle body in a plane parallel to the trunnion cylinder 24 at the lower side of the trunnion cylinder 24, and is connected to the other end of the beam 22. A trunnion shaft 32 connected coaxially and a trunnion portion 36 including a trunnion shaft insertion portion 34 through which the trunnion cylinder 24 is inserted are configured.

  A trunnion flange 38 is provided at the rear end of the trunnion block 26, and a spring bracket 40 that supports the lower end of the air bellows 28 is provided on the trunnion flange 38. Further, it is supported by a support shaft bracket 19A or 19B provided integrally therewith.

  The support shaft brackets 19A and 19B are attached to the vehicle body frame 18 so as to be suspended from the vehicle body frame 18 on the front side in the vehicle body front-rear direction of each of the four air suspension units 14A, 14B, 16A, and 16B.

  As shown in an enlarged view in FIG. 1, the rear ends (upper ends) of the shock absorbers 30 in the front air suspension units 14A and 16A are supported by the support shaft bracket 19B in the rear air suspension units 14B and 16B. .

  Further, the rear end (upper end) of the shock absorber 30 in the rear air suspension units 14B and 16B is directly supported on the lower surface of the vehicle body frame 18.

  Reference numeral 42 in FIGS. 1 and 2 denotes a brake device attached to each of the air suspension units 14A, 14B, 16A, and 16B.

  In the 16-wheel suspension system according to this embodiment, the four air suspension units 14A, 14B, 16A, and 16B are each independently provided with an air suspension including the air bellows 28 and the shock absorber 30. When one of the two front and rear shafts gets over a stone on the road, the displacement is not transmitted to the other air suspension unit, and the cushioning property is high, so that a heavy precision machine can be transported.

Further, in each air suspension unit, until the rear of the air bellows from the front side of the support shaft is aligned in the longitudinal direction of the vehicle body, and an axle W _A, W _B is to the left and right around the beam 22 rocking For example, as shown in FIG. 6, when one of the two wheels in the vehicle body width direction rides on a stone or the like on the road in one air suspension unit, the impact is caused by the air suspension, Alternatively, the inclination of the body frame 5 can be suppressed by absorbing the displacement.

  In the above embodiment, the trunnion block 26 is disposed on the rear side of the support shaft 20 in the longitudinal direction of the vehicle body, and the air bellows 28 is disposed on the rear side of the trunnion block 26. The invention is not limited to this, and the installation direction of the air suspension unit may be opposite to the embodiment, that is, the trunnion block and the air bellows may be provided on the front side of the support shaft.

  The present invention is applicable to a 16-wheel suspension of a trailer that carries heavy objects.

W ... wheels W _A, W B _... axle 1 ... heavy trailer 2A, 2B ... shaft 3A-3D ... axle 4A, 4B ... walking beams 5 and 18 ... body frame 6A, 6B ... bracket 7A, 7B, 32 ... trunnion shaft DESCRIPTION OF SYMBOLS 10 ... 16-wheel suspension system 12 ... Trailer 14A, 14B, 16A, 16B ... Air suspension unit 19A, 19B ... Support shaft bracket 20 ... Support shaft 22 ... Beam 24 ... Trunnion cylinder 26 ... Trunnion block 28 ... Air bellows 30 ... Shock absorber 34 ... trunnion shaft insertion portion 36 ... trunnion portion 38 ... trunnion flange 40 ... spring bracket 42 ... brake device

Claims (3)

It is provided at the rear of the trailer and consists of four air suspension units, each of which has eight wheels in the vehicle body width direction and two rows in the vehicle body longitudinal direction.
The air suspension unit includes a support shaft provided on a vehicle body frame of a trailer so that a center axis thereof is in a vehicle body width direction and is horizontal, and one end is supported by the support shaft. And two beams can be arranged on both sides of the beam in the vehicle width direction, and above the beam, the axle of the wheels. the supporting shaft side of the 1 group of the braking device in position is disposed than the for the beam, on the opposite side of the position and the support shaft, the trailer shock absorber is connected to and arranged in the body frame A 16-wheel suspension system,
A trunnion cylinder through which the axle of the wheel is inserted, and a trunnion block having one end supported by the other end of the beam;
An air bellows mounted between the other end of the trunnion block and the body frame;
Having
The trunnion block is
A trunnion shaft disposed in the longitudinal direction of the vehicle body in a plane parallel to the trunnion cylinder at a lower position of the trunnion cylinder and coaxially connected to the other end of the beam;
A trunnion portion having a trunnion shaft insertion portion through which the trunnion cylinder and the trunnion shaft are inserted;
Have
A trailer 16-wheel suspension system, wherein two shock absorbers are provided, and one end of each shock absorber is connected to both sides of the trunnion block in the vehicle width direction at a lower position of the air bellows. In claim 1,
The trailer 16-wheel suspension system is characterized in that the trunnion block is disposed on the rear side of the support shaft in the longitudinal direction of the vehicle body, and the air bellows is disposed on the rear side of the trunnion block in the longitudinal direction of the vehicle body. In claim 2,
A trunnion flange is provided at the other end of the trunnion block, and a spring bracket that supports the lower end of the air bellows and an absorber bracket that supports one end of the shock absorber are provided on the trunnion flange.
The support shaft is supported on the lower side of the body frame by a support shaft bracket provided integrally therewith,
The other end of the shock absorber in the front two air suspension units of the four units is supported by the support shaft bracket in the rear two air suspension units of the four units. The trailer's 16-wheel suspension system.

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