CN219295129U

CN219295129U - Leaf spring structure of semitrailer suspension assembly

Info

Publication number: CN219295129U
Application number: CN202320893864.5U
Authority: CN
Inventors: 纪雪峰; 戚明荣
Original assignee: Yangzhou Xingfeng New Material Co ltd
Current assignee: Yangzhou Xingfeng New Material Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-07-04
Anticipated expiration: 2033-04-20

Abstract

The utility model relates to the technical field of plate spring structures, in particular to a plate spring structure of a semitrailer suspension assembly. The technical scheme includes that the spring comprises a plate spring main body, a bracket and an axle, wherein a buffer mechanism is connected between the plate spring main body and the axle, the buffer mechanism comprises a base plate connected with the top of the axle, the top of the base plate is connected with a connecting frame, and two sides of the top of the base plate are also connected with a first spring; the support is arranged at two ends of the plate spring main body, two sides of the axle are connected with supporting mechanisms assembled with the support, each supporting mechanism comprises a sleeve rod rotationally connected with the support, a supporting rod is slidably arranged in each sleeve rod, and a second spring is sleeved on an outer ring of each supporting rod. The utility model has novel and compact structure, more comprehensive buffering of the plate spring structure, pressure dispersion of both ends and the middle part of the plate spring, longer service life of the plate spring and more stable operation and use of the plate spring.

Description

Leaf spring structure of semitrailer suspension assembly

Technical Field

The utility model relates to the technical field of plate spring structures, in particular to a plate spring structure of a semitrailer suspension assembly.

Background

Semitrailers are trailers with axles placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and equipped with hitch devices that can transfer horizontal and vertical forces to the tractor; in the suspension components of the semitrailer, the connecting parts of the plate spring and the shaft tube are mostly composed of the plate spring, an upper bracket, a lower bracket positioned below the upper bracket, a bottom frame positioned below the lower bracket, the shaft tube positioned between the upper bracket and the lower bracket, an ear part, a rotating sleeve and a pull rod. When the existing semitrailer plate spring is used, the buffer force is not strong enough when the two ends of the inside are impacted, so that the impact force of the plate spring is large, the service life of the plate spring is reduced, and the comprehensiveness is not high enough. The utility model provides a "semi-trailer leaf spring support buffer gear" in patent "CN216993797U", the setting through the spring in this scheme is to the both sides of leaf spring buffering, disperses impact force, but the setting of this spring can only cushion the both ends of leaf spring, and the leaf spring can receive the pulling force or the extrusion force at both ends in middle part when receiving the impact, and the leaf spring interlude is in the fracture appears in the most easy stretch out of long-time use, therefore we propose a semi-trailer suspension assembly's that has atress dispersion function long-life leaf spring structure.

Disclosure of Invention

The utility model aims to solve the problems that the uniformity and effect of buffering and dispersing stress of the existing plate spring in the background art are to be improved, the stress in the middle of the plate spring cannot be uniformly dispersed, and the service life of the plate spring is to be prolonged, and provides a long-service-life plate spring structure of a semitrailer suspension assembly with a stress dispersing function.

The technical scheme of the utility model is as follows: the plate spring structure of the semitrailer suspension assembly comprises a plate spring main body, a bracket and an axle, wherein a buffer mechanism is connected between the plate spring main body and the axle and comprises a base plate connected with the top of the axle, the top of the base plate is connected with a connecting frame, and two sides of the top of the base plate are also connected with springs I;

the support is arranged at two ends of the plate spring main body, two sides of the axle are connected with supporting mechanisms assembled with the support, each supporting mechanism comprises a sleeve rod rotationally connected with the support, a supporting rod is slidably arranged in each sleeve rod, and a second spring is sleeved on an outer ring of each supporting rod.

Preferably, the two sides of the axle are fixedly connected with connecting seats, and one end of the supporting rod, which is far away from the loop bar, is rotatably sleeved with the outer ring of the shaft pin, which is arranged on the connecting seats.

Preferably, one end of the second spring is connected with one end of the loop bar, and the other end of the second spring is connected with the outer ring of the support bar.

Preferably, one end of the loop bar far away from the axle is rotationally connected with the inner wall of the bracket through a shaft pin.

Preferably, one end of the supporting rod is arranged in a sliding manner along the inner wall of the loop bar.

Preferably, the plate spring main body is provided with a plurality of mounting holes, and bolts are connected between the bracket and the bolt holes.

Preferably, the top end of the first spring is connected to the bottom of the leaf spring body.

Preferably, the connecting frame is connected with a threaded bolt, a buffer plate is arranged at a gap between the top of the plate spring main body and the connecting frame, and the buffer plate penetrates through the threaded bolt to rotate and be connected with the plate spring main body.

Preferably, the connecting frame is detachably connected with the backing plate, the connecting frame is provided with two groups, and the bracket and the supporting mechanism are symmetrically arranged relative to the central axis of the plate spring main body.

Compared with the prior art, the utility model has the following beneficial technical effects:

1. according to the utility model, the plate spring main body is assembled with the axle through the arrangement of the buffer mechanism, the assembly is convenient and the fastening degree is high, when the two ends of the plate spring main body are subjected to stretching or extrusion force, the extrusion force of the plate spring main body is buffered, and the buffer plate is combined to ensure that the buffer rubber plate is arranged in the middle of the plate spring main body, so that the bending of the middle part can be reduced, and the service life of the plate spring main body is prolonged;

2. according to the utility model, the two ends of the leaf spring main body can be stressed and buffered through the symmetrical arrangement of the two groups of supporting mechanisms, so that the impact is reduced, the pressure is dispersed, and the use of the leaf spring main body is more stable;

3. in summary, the utility model has novel and compact structure, more comprehensive buffering of the plate spring structure, pressure dispersion of both ends and the middle part of the plate spring, longer service life of the plate spring and more stable operation and use of the plate spring.

Drawings

FIG. 1 shows a schematic structure of the present utility model;

FIG. 2 is a schematic front view of FIG. 1;

FIG. 3 is a schematic view of the structure of the buffer mechanism and axle of the present utility model;

fig. 4 is a schematic structural view of the bracket and the supporting mechanism of the present utility model.

Reference numerals:

1. a plate spring main body;

2. a bracket; 21. a bolt;

3. an axle; 31. a connecting seat;

4. a buffer mechanism; 41. a backing plate; 42. a connecting frame; 43. a buffer plate; 44. a first spring; 46. a threaded bolt;

5. a support mechanism; 51. a loop bar; 52. a support rod; 53. and a second spring.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Example 1

As shown in fig. 1-4, the plate spring structure of the semitrailer suspension assembly provided by the utility model comprises a plate spring main body 1, a bracket 2 and an axle 3, wherein the bracket 2 is arranged at two ends of the plate spring main body 1, a plurality of mounting holes are formed in the plate spring main body 1, bolts 21 are connected between the bracket 2 and the bolt holes, and the bracket 2 and the plate spring main body 1 are assembled through the arrangement of the bolts 21. The plate spring body 1 and the axle 3 are connected with a buffer mechanism 4, the buffer mechanism 4 comprises a base plate 41 connected with the top of the axle 3, the top of the base plate 41 is connected with a connecting frame 42, the connecting frame 42 is of a U-shaped structure, two sides of the top of the base plate 41 are also connected with a first spring 44, the top end of the first spring 44 is connected to the bottom of the plate spring body 1, when the two ends of the plate spring body 1 are extruded or pulled, the plate spring body 1 can deform, and the concave surface of the plate spring body 1 can be more concave, so that the downward force can be buffered through the arrangement of the first spring 44, and the deformation of the plate spring body 1 is reduced; the connecting frame 42 is connected with a threaded bolt 46, a buffer plate 43 is arranged at a gap between the top of the plate spring main body 1 and the connecting frame 42, the buffer plate 43 is connected with the plate spring main body 1 through threaded rotation of the threaded bolt 46, and the buffer plate 43 is made of rubber. The link 42 is detachably connected with the backing plate 41, and the link 42 has two sets of, and support 2 and supporting mechanism 5 set up about leaf spring main part 1 axis symmetry, and the setting of buffer board 43 can be preferentially applyed the extrusion to buffer board 43 both sides when the concave surface of leaf spring main part 1 pushes down the deformation, and buffering through buffer board 43 reduces the buffering to leaf spring main part 1 middle part, reduces the pressure and applys to avoid middle long-term hand appearance extrusion crack, thereby extension leaf spring main part 1's life.

Example two

As shown in fig. 1-4, on the basis of the first embodiment, the bracket 2 is installed at two ends of the leaf spring main body 1, two sides of the axle 3 are connected with supporting mechanisms 5 assembled with the bracket 2, two sides of the axle 3 are fixedly connected with connecting seats 31, each supporting mechanism 5 comprises a sleeve rod 51 rotationally connected with the bracket 2, one end of each supporting rod 52, far away from the sleeve rod 51, is rotationally sleeved with an outer ring of a shaft pin installed on the connecting seat 31, one end of each supporting rod 52 rotates along the connecting seat 31, one end of each sleeve rod 51, far away from the axle 3, is rotationally connected with the inner wall of the bracket 2 through the shaft pin, and one end of each sleeve rod 51 is rotationally arranged along the inner wall of the bracket 2. The sleeve rod 51 is slidably provided with a support rod 52, one end of the support rod 52 is slidably arranged along the inner wall of the sleeve rod 51, a second spring 53 is sleeved on the outer ring of the support rod 52, one end of the second spring 53 is connected with one end of the sleeve rod 51, and the other end of the second spring 53 is connected with the outer ring of the support rod 52.

In this embodiment, when one end of the leaf spring main body 1 is pressed down or lifted up, one of the supporting mechanisms 5 is deformed, and when one end of the leaf spring main body 1 is lifted up, the support 2 pulls the loop bar 51, so that the length between the support bar 52 and the loop bar 51 is prolonged, one end of the support bar 52 slides along the inner wall of the loop bar 51, the second spring 53 at this time is stretched, and the other end of the support bar 52 rotates along the connecting seat 31, so that one end of the leaf spring main body 1 is supported, and the leaf spring main body 1 is used for dispersing stress to ensure the stability of use and increase of the deformation times and prolong the service life.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims

1. The utility model provides a leaf spring structure of semitrailer suspension assembly, includes leaf spring main part (1) and support (2) and axle (3), its characterized in that: a buffer mechanism (4) is connected between the plate spring main body (1) and the axle (3), the buffer mechanism (4) comprises a base plate (41) connected with the top of the axle (3), the top of the base plate (41) is connected with a connecting frame (42), and two sides of the top of the base plate (41) are also connected with a first spring (44);

the support (2) is installed at the two ends of the plate spring main body (1), supporting mechanisms (5) assembled with the support (2) are connected to the two sides of the axle (3), each supporting mechanism (5) comprises a sleeve rod (51) rotationally connected with the support (2), a supporting rod (52) is slidably installed in each sleeve rod (51), and a second spring (53) is sleeved on the outer ring of each supporting rod (52).

2. The plate spring structure of the semitrailer suspension assembly according to claim 1, wherein the two sides of the axle (3) are fixedly connected with connecting seats (31), and one end of the supporting rod (52) far away from the loop bar (51) is rotatably sleeved with an outer ring of a shaft pin arranged on the connecting seats (31).

3. The plate spring structure of a semitrailer suspension assembly according to claim 1, wherein one end of the second spring (53) is connected with one end of the loop bar (51), and the other end of the second spring (53) is connected with an outer ring of the support bar (52).

4. A leaf spring construction of a semitrailer suspension assembly according to claim 3, characterized in that the end of the loop bar (51) remote from the axle (3) is pivotally connected to the inner wall of the bracket (2) by means of a pivot pin.

5. A leaf spring structure of a semitrailer suspension assembly according to claim 1, characterized in that one end of the support rod (52) is slidably arranged along the inner wall of the loop bar (51).

6. The plate spring structure of the semitrailer suspension assembly according to claim 1, wherein a plurality of mounting holes are formed in the plate spring main body (1), and bolts (21) are connected between the bracket (2) and the bolt holes.

7. A leaf spring construction of a semitrailer suspension assembly according to claim 1, characterized in that the top end of the first spring (44) is connected to the bottom of the leaf spring body (1).

8. The plate spring structure of the semitrailer suspension assembly according to claim 1, wherein the connecting frame (42) is connected with a threaded bolt (46), a buffer plate (43) is arranged at a gap between the top of the plate spring main body (1) and the connecting frame (42), and the buffer plate (43) is connected with the plate spring main body (1) through threaded rotation of the threaded bolt (46).

9. The plate spring structure of the semitrailer suspension assembly according to claim 1, wherein the connecting frame (42) is detachably connected with the backing plate (41), the connecting frame (42) has two groups, and the bracket (2) and the supporting mechanism (5) are symmetrically arranged about the central axis of the plate spring main body (1).