CN214492436U

CN214492436U - Leaf spring suspension device of large trailer

Info

Publication number: CN214492436U
Application number: CN202120408826.7U
Authority: CN
Inventors: 邬文超
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-10-26
Anticipated expiration: 2031-02-25

Abstract

The utility model relates to a trailer suspension technical field specifically discloses a leaf spring suspension device of large trailer, including solebar and can dismantle the connecting device who connects in solebar bottom, connecting device includes from the front to the back equal symmetrical rigid coupling at the front lug, connection base and the back lug of solebar both sides, rotates on the connection base and is connected with the balance arm, and equal rigid coupling has the leaf spring between front lug and the balance arm and between back lug and the balance arm; the leaf spring below all is equipped with the axle central siphon, and axle central siphon both sides all are equipped with the bolt of being connected leaf spring and axle central siphon, and the bottom rigid coupling of preceding lug has first pull rod, and the free end of first pull rod and the axle central siphon bottom rigid coupling that is close to preceding lug connect base bottom rigid coupling and have the second pull rod, the free end of second pull rod and the axle central siphon rigid coupling that is close to back lug. The utility model discloses couple together the front and back trailer, solved the trailer because the load frame is the problem that the height leads to every axle load to differ to make the serious wearing and tearing of part axle behind the preceding height.

Description

Leaf spring suspension device of large trailer

Technical Field

The application relates to the technical field of trailer suspension, and particularly discloses a leaf spring suspension device of a large trailer.

Background

A trailer is a vehicle which is towed by a motor vehicle and which has no power drive of its own, the coupling device serving to couple the front and rear trailers. The steel plate spring suspension of trailer is characterized by that on the suspension of trailer a steel plate spring is mounted, said steel plate spring is formed from several steel sheets with identical elasticity and width and different lengths, and is aimed at connecting the vehicle frame and vehicle axle together in the form of suspension, and exposing them between the vehicle frame and vehicle axle, and can bear the load impact of wheel to the vehicle frame, reduce violent movement of vehicle body and retain the running stability of vehicle and adaptability to different road conditions. When the vertical load born by the steel plate spring is positive, each spring piece is stressed and deformed and tends to be arched upwards. The vehicle frame and the vehicle axle are close to each other. When the axle and the frame are far away from each other, the forward vertical load and deformation borne by the steel plate spring are gradually reduced and sometimes even reversed, the road traffic laws at home and abroad limit the axle load of a single axle of the truck, and the load development direction of the large trailer develops towards large tonnage, so that the number of the axles of the truck is increased, the load does not exceed the standard when the trailer is fully loaded, and the frame of the general trailer is in a state that the front part is high and the rear part is low in the process of loading, so that the rear part load component of the frame is increased; because the loading capacity of each axle is different, the phenomenon of excessive abrasion of partial axles can occur, and the service life of the axles is influenced.

Accordingly, the present inventors have devised a leaf spring suspension apparatus for a large trailer to solve the above-described problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the trailer leads to every axle load to differ and make the serious wearing and tearing of part axle because the load frame is high before and low after being.

In order to achieve the purpose, the utility model provides a steel plate spring suspension device of a large trailer, which comprises a frame longitudinal beam and a detachable connecting device connected to the bottom of the frame longitudinal beam, wherein the bottom of one end of the frame longitudinal beam is fixedly connected with a traction pin, the top of the other end of the frame longitudinal beam is fixedly connected with a saddle, the connecting device comprises a front lifting lug, a connecting base and a rear lifting lug which are symmetrically and fixedly connected to two sides of the frame longitudinal beam from front to back, the connecting base is rotatably connected with a balance arm, and leaf springs are fixedly connected between the front lifting lug and the balance arm and between the rear lifting lug and the balance arm;

the leaf spring below all is equipped with the axle central siphon, and axle central siphon both sides all are equipped with the bolt of being connected leaf spring and axle central siphon, and the bottom rigid coupling of preceding lug has first pull rod, and the free end of first pull rod and the axle central siphon bottom rigid coupling that is close to preceding lug connect base bottom rigid coupling and have the second pull rod, the free end of second pull rod and the axle central siphon rigid coupling that is close to back lug.

The principle and effect of this basic scheme lie in:

1. the utility model discloses a towing pin of solebar one end bottom links together trailer and tractor saddle, solebar opposite side saddle is connected with the towing pin of another trailer, two leaf spring suspensions are established to trailer frame bottom, connect the base at frame bottom rigid coupling, the connection is to be done and is rotated the connection balance arm, use the balance arm to connect between two leaf spring suspensions, all install the wheel on two leaf spring suspensions, because the balance arm can rotate on connecting the base, when the trailer load traveles on uneven road, the wheel is not in unified plane, two leaf spring adjustment atresss when the balance arm rotates, it is even with leaf spring's connection's frame atress.

2. Compared with the prior art, the utility model discloses establish the towing pin other end at solebar one end and establish two trailers around the saddle is used for connecting, the structure contains two leaf spring suspensions, has balanced the phenomenon that the horizontal height differs when the trailer load traveles for every axle atress is even in the bearing process, has avoided partial axle to differ the phenomenon that appears excessive wearing and tearing because of the bearing, has improved the whole life of axle.

Furthermore, the upper end and the lower end of the bolt are respectively and fixedly connected with an upper pressing plate and a lower pressing plate which are used for pressing the plate spring and the axle tube. The upper pressing plate and the lower pressing plate respectively act on the plate spring and the shaft tube to press the plate spring and the shaft tube together.

Further, be equipped with the card axletree board between leaf spring downside and the axle central siphon upside, the card axletree board includes the cardboard and blocks the groove, and the card is held to axle central siphon upper end, and the cardboard is located the axle central siphon and is held the space department between the groove. The axle clamping plate is used for fixing the axle tube.

Further, the bolt is a U-shaped bolt. The U-shaped bolt can connect and fix the upper pressing plate, the middle part of the plate spring, the axle shaft tube, the axle clamping plate and the pressing plate.

Furthermore, the first pull rod and the second pull rod are detachably connected through two connecting rods. The first pull rod and the second pull rod are connected by two connecting rods, and the number of the connecting rods can be changed according to different requirements.

Furthermore, the free end of the first pull rod and the free end of the second pull rod are fixedly connected with the lower pressing plate at the bottom of the axle shaft tube. The pull rod is fixedly connected with the lower pressing plate, so that the stress of the shaft tube is relieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows a schematic structural diagram of a leaf spring suspension device of a large trailer according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

The following is further detailed by the specific embodiments:

reference numerals in the drawings of the specification include: the axle clamping device comprises an axle clamping plate 1, a frame 2, wheels 3, a plate spring 4, a front lifting lug 5, a first pull rod 6, a lower pressing plate 7, a central stud 8, an axle shaft tube 9, a U-shaped bolt 10, an axle clamping groove 11, a second pull rod 12, a rear lifting lug 13, a connecting base 14, a balance arm 15, a traction pin 16 and a saddle 17.

An embodiment of a steel plate spring suspension device of a large trailer is shown in figure 1, and comprises a frame 2, a front lifting lug 5, a connecting base 14 and a rear lifting lug 13 which are fixedly connected to the bottom of the frame 2 from left to right in sequence, a towing pin 16 is fixedly connected to the bottom of the front end of the frame 2, a saddle 17 is fixedly connected to the upper portion of the rear end of the frame 2, a balance arm 15 is rotatably connected to the connecting base 14, a first plate spring 4 is horizontally arranged between the front lifting lug 5 and the balance arm 15, a uniform lug at the left end of the first plate spring 4 is fixedly connected to the front lifting lug 5, a rolling lug at the right end of the first plate spring 4 is fixedly connected to the left end of the balance arm 15, a second plate spring 4 is horizontally arranged between the balance arm 15 and the rear lifting lug 13, a rolling lug at the left end of the second plate spring 4 is fixedly connected to the right end of the balance arm 15, the right end of the second plate spring 4 is fixedly connected to the rear rolling lug, an axle tube 9 is arranged below the middle portions of the first plate spring 4 and the second plate spring 4, u-shaped bolts are arranged at two sides of the axle tube 9, the upper end of a U-shaped bolt 10 penetrates through the middle of a plate spring 4 and is detachably connected with an upper pressing plate, the lower end of the U-shaped bolt 10 is detachably connected with a lower pressing plate 7, a shaft clamping plate 1 is arranged between the upper end of a shaft tube 9 and the lower end of the middle of the plate spring 4, the shaft clamping plate 1 comprises a clamping plate and a shaft clamping groove 11, the shaft tube 9 is arranged in the shaft clamping groove 11, a gap between the shaft tube 9 and the shaft clamping groove 11 is filled with the clamping plate, a central stud 8 is arranged in the middle of the lower pressing plate 7, and the central stud 8 penetrates through the shaft tube 9 to connect and fix the shaft clamping plate 1, the shaft clamping plate 9 and the lower pressing plate 7;

the bottom of the front lifting lug 5 is fixedly connected with a first pull rod 6, the right end of the first pull rod 6 is fixedly connected with a lower pressing plate 7 at the bottom of the axle tube at the left side of the balance arm 15, and the bottom of the connecting base 14 is fixedly connected with a second pull rod 12, and the right end of the second pull rod 12 is fixedly connected with the lower pressing plate 7 at the bottom of the axle tube 9 at the right side of the balance arm 15.

The specific implementation process comprises the following steps: when the front trailer and the rear trailer are connected by using the frame 2, the towing pin 16 at the front end of the frame 2 is aligned with and connected with the saddle 17 on the front trailer, the saddle 17 at the rear end of the frame 2 is aligned with and connected with the towing pin 16 of the rear trailer, and the frame 2 connects the front trailer and the rear trailer, under normal conditions, the road surface is horizontal during the running process of the trailer, each axle of the trailer is uniformly stressed, the problem of serious abrasion of a part of axles is not generated, when the trailer runs on uneven road surface due to the contact of tires with the uneven road surface, the heights of the axles connected with the tires are different, the plate spring 4 connected with the axles bears pressure, the first pull rod 6 connects the axle tube 9 at the left side with the front lifting lug 5, the axle tube 9 at the left side is stable, the second pull rod 12 connects the connecting base 14 with the axle tube 9 at the right side, so that the axle tube 9 at the right side is stable, and meanwhile, when the heights of the two axles are inconsistent, the stress of the axles is adjusted by the balance arm 15 connected with the first plate spring 4 and the second plate spring 4, so that the stress of the two axles is uniform.

The utility model discloses couple together the front and back trailer, solved the trailer because load frame 2 is the problem that the height leads to every axle load to differ some axle serious wearing and tearing behind the preceding height.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A steel plate spring suspension device of a large trailer is characterized by comprising a frame longitudinal beam and a connecting device detachably connected to the bottom of the frame longitudinal beam, wherein a traction pin is fixedly connected to the bottom of one end of the frame longitudinal beam, a saddle is fixedly connected to the top of the other end of the frame longitudinal beam, the connecting device comprises a front lifting lug, a connecting base and a rear lifting lug which are symmetrically and fixedly connected to two sides of the frame longitudinal beam from front to back, a balance arm is rotatably connected to the connecting base, and leaf springs are fixedly connected between the front lifting lug and the balance arm and between the rear lifting lug and the balance arm;

2. The plate spring suspension device of a large trailer according to claim 1, wherein the upper end and the lower end of the bolt are respectively fixedly connected with an upper pressure plate and a lower pressure plate for pressing the plate spring and the axle tube.

3. The leaf spring suspension device of claim 2, wherein a shaft clamping plate is disposed between the lower side of the leaf spring and the upper side of the axle tube, the shaft clamping plate comprises a clamping plate and a clamping groove, the upper end of the axle tube is disposed in the clamping groove, and the clamping plate is disposed in the gap between the axle tube and the clamping groove.

4. The leaf spring suspension of a large trailer according to claim 1, wherein the bolt is a U-bolt.

5. The leaf spring suspension of a large trailer according to claim 1, wherein the first and second tie rods are each detachably connected by two tie rods.

6. The leaf spring suspension device of a large trailer according to claim 1, wherein the free end of the first pull rod and the free end of the second pull rod are fixedly connected with the lower pressing plate at the bottom of the axle tube.