CN204322954U

CN204322954U - A kind of towed vehicle trailer coupling

Info

Publication number: CN204322954U
Application number: CN201420819984.1U
Authority: CN
Inventors: 张全逾
Original assignee: Chengde Petroleum College
Current assignee: Chengde Petroleum College
Priority date: 2014-12-18
Filing date: 2014-12-18
Publication date: 2015-05-13
Anticipated expiration: 2024-12-18

Abstract

The utility model relates to a kind of towed vehicle trailer coupling, this mechanism is by draw bar, traction bars, pin, adapter sleeve, disk spring, back-up ring, slip ring forms, draw bar front end is threaded flange shape, carry out elasticity by the disk spring that two panels is opposed with traction bars after connecting with adapter sleeve to be connected, disk spring small end is pressed on the shouldered traction bars in one end by the back-up ring of two semicircles after applying predetermincd tension, the large end of disk spring is directly placed in the annular groove at adapter sleeve two ends, one slip ring is installed between traction bars and disk spring small end, the wearing and tearing to traction bars are caused when being out of shape to avoid disk spring, draw bar and adapter sleeve are threaded connection rear pin and tighten and play locking effect, the disk spring that two panels is opposed when draw bar under tension or pressure always has a slice pressurized generation elastic deformation, thus ensure that shock absorber plays buffer action all the time, make this mechanism structure simple and reliable and bumper and absorbing shock excellent performance.

Description

A kind of towed vehicle trailer coupling

Technical field

The utility model relates to a kind of trailer coupling of towed vehicle, belongs to towed vehicle traction technique field.

Background technology

Existing tractor truck and a kind of mode of traction of trailer are connected by draw bar to realize, and draw bar and trailer or be rigidly connected by hauling hook, coil spring is adopted to cushion, it is huge that the former draws impact, the latter needs the coil spring of large-size and deflection is large, load-carrying capacity is more weak, in order to the fatigue life of the riding comfort and draw bar that improve towed vehicle must adopt novel shock absorber, to increase load-carrying capacity, reduce scantling of structure, improve cushion characteristic, to reduce deflection size.

Utility model content

The utility model provides the trailer coupling that a kind of structure is simple, load-carrying capacity is strong, deflection is little, cushion characteristic is excellent, be mainly used in the traction bars of towed vehicle, to improve starting performance and the riding comfort of tractor truck, improve the fatigue life of draw bar simultaneously.

The technical scheme that the technical matters that the utility model solves adopts is:

A kind of trailer coupling of towed vehicle, comprise draw bar, traction bars, pin, adapter sleeve, disk spring, back-up ring, slip ring, draw bar Front-end Design becomes threaded flange shape, flexibly connected by the opposed disk spring of two panels and traction bars after connecting with adapter sleeve, disk spring small end is pressed on the shouldered traction bars in one end by the back-up ring of two semicircles after applying predetermincd tension, the large end of disk spring is all directly placed in the annular groove at adapter sleeve two ends in inner side, adapter sleeve profile is that regular hexagon or octagon are so that assembling, one slip ring is installed between traction bars and disk spring small end, the wearing and tearing to traction bars are caused when being out of shape to avoid disk spring, draw bar and adapter sleeve are threaded connection rear pin and tighten and play locking effect, the disk spring that two panels is opposed when draw bar under tension or pressure always has a slice pressurized generation elastic deformation, thus ensure that shock absorber plays buffer action all the time.

The trailer coupling of above-mentioned towed vehicle, described draw bar can process threaded flange in the design of design initial stage, also the later stage can process flange separately and draw bar is welded.

The trailer coupling of above-mentioned towed vehicle, described draw bar and adapter sleeve can be threaded connection, and also can be connected by pin, adopt time the former and will take locking measure.

The trailer coupling of above-mentioned towed vehicle, described disk spring must be opposed, can be that small end is in inner side or hold in inner side greatly, only need design two semicircular back-up ring when adopting small end in inner side be stuck in order to against two disk spring small ends in traction bars annular groove, and at this moment adapter sleeve also only need design back-up ring at right-hand member.

The trailer coupling of above-mentioned towed vehicle, external diameter when described adapter sleeve internal diameter must be greater than disk spring deformation limit is beneficial to shock absorber and normally works.

The trailer coupling of above-mentioned towed vehicle, described disk spring is enclosed within a slip ring and is enclosed within traction bars again, the wearing and tearing of traction bars when using graphite powder or grease to prevent the two relative sliding between slip ring and traction bars, slip ring outer cylinder two ends are designed to truncated cone shape to compensate small end deflection when disk spring compresses, and when disk spring small end is in inner side, slip ring also therefrom will be divided into two parts.

The trailer coupling of above-mentioned towed vehicle, the specification of described disk spring can be selected according to drawbar load.

The trailer coupling of above-mentioned towed vehicle, needs to carry out pretension with equipment special to disk spring when mounted, and therefore back-up ring will be designed to two semicircles and be beneficial to assembling.

The beneficial effects of the utility model are:

The utility model adopts opposed disk spring to carry out bumper and absorbing shock, give full play to disk spring size little, variation rigidity, deflection is little, bearing capacity is strong, the feature of cushion characteristic excellence, make whole buffer unit structure simple, can entirely dismantle, easy to maintenance, be applicable to various severe natural environment, owing to take into account the change of internal diameter when disk spring is out of shape, add the slip ring of band frusto-conical surface, thus greatly reduce the degree of traction bars wearing and tearing, make this shock absorber reliability strong, therefore the utility model can make the starting performance of towed vehicle, riding comfort improves greatly, meet engineering truck completely to durability simultaneously, ease for use, reliability, maintainability, safety and human factors, the various requirement of constructional simplicity, there are good market outlook.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of slip ring;

Fig. 3 is the structural representation of another kind of mounting means of the present utility model.

In figure, mark is as follows: draw bar 1, traction bars 2, pin 3, adapter sleeve 4, disk spring 5, back-up ring 6, slip ring 7.

Detailed description of the invention

The utility model is made up of draw bar 1, traction bars 2, pin 3, adapter sleeve 4, disk spring 5, back-up ring 6, slip ring 7.

Show in Fig. 1, draw bar 1 and adapter sleeve 4 adopt after removable being fixedly connected with, the disk spring 5 opposed by two panels is connected with traction bars 2 elasticity, draw bar 1 right-hand member structure is designed in band, outer stopper and externally threaded flange, in order to the locking end face at flange outer stopper devises two pin holes, this hole is carry out joining after draw bar 1 assembles with adapter sleeve 4 beating, therefore pin 3 not only have locking effect can also judge between draw bar 1 and adapter sleeve 4 tightness whether meet the requirements, certainly, the scope that the modes such as pin is connected also can be adopted between draw bar 1 with adapter sleeve 4 also to belong to the utility model protect.

Show in Fig. 1, the utility model fitting process is: on traction bars 2, overlap slip ring 7, allow two panels disk spring 5 greatly end interior and be first inserted in the right a slice, then order is inserted in adapter sleeve 4 and left side a slice disk spring 5, at this moment utilize special tool to apply predetermincd tension to compress axial dimension and snap in two semicircular back-up ring 6 in the annular groove of traction bars 2 to disk spring 5, be finally screwed into draw bar 1 and use pin 3 urgent in locking.

Show in Fig. 1, a convex shoulder is processed in the middle of adapter sleeve 4, its left and right both ends of the surface are respectively against the large end face of two disk springs 5, the left and right small end face of disk spring 5 is resisted against the right convex shoulder end face of semicircle back-up ring 6 in traction bars 2 annular groove and traction bars 2 respectively, owing to being applied with certain predetermincd tension when assembling back-up ring 6 to disk spring 5, adapter sleeve 4 flange both ends of the surface and back-up ring 6 right side, traction bars 2 convex shoulder left side contacts with disk spring 5 all the time, to avoid when being subject to impacting disk spring 5 end face generation left-right collision and knock phenomenon, almost noiselessness when this shock absorber is worked.

Show in figure, disk spring 5 is being subject to impacting generation axial deformation, its large end radial dimension is large by change, its small end radial dimension will diminish, therefore the size of adapter sleeve 4 internal diameter external diameter when being designed at least be greater than disk spring 5 deformation limit, and slip ring 7 (as shown in Figure 2) outer cylinder two ends are designed to truncated cone shape, small end inner diameter when its maximum gauge is slightly less than disk spring 5 free state is so that assembling, and when disk spring 5 axial deformation, its small end slides the amount of diminishing compensating small end radial dimension on the conical surface of slip ring 7.

Impact between the disk spring that the utility model utilizes two panels opposed 5 pairs of draw bars 1 and traction bars 2 cushions, when tractor truck is started to walk, draw bar 1 and adapter sleeve 4 draw left, thus by the disk spring 5 compressing the left side, tractive force is delivered on traction bars 2, greatly reduce traction impulsive force, when tractor truck is braked due to inertia, compression the right disk spring 5 is delivered to force of inertia on draw bar 1 by traction bars 2, plays the effect greatly reducing braking and impact.

It should be noted that above what enumerate is only specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, many distortion can also be had, be illustrated in figure 3 one distortion wherein: when disk spring 5 assembles, take contrary opposed mode, the centre now position of back-up ring 6 being moved to two disk springs 5 is with against two small end faces, and two large end faces of disk spring 5 are resisted against on the end face of flange of draw bar 1 and the right convex shoulder of adapter sleeve 4 respectively, slip ring 7 is also divided into left and right two halves accordingly, this change is the change of assembling mode, there is not essence and change in its essence, therefore, all distortion that those of ordinary skill in the art can directly derive from disclosed content of the present utility model or associate, protection domain of the present utility model all should be thought.

Claims

1. a towed vehicle trailer coupling, it is characterized in that: comprise draw bar (1), traction bars (2), pin (3), adapter sleeve (4), disk spring (5), back-up ring (6), slip ring (7), draw bar (1) and adapter sleeve (4) connect as one, and be connected with traction bars (2) elasticity by the disk spring (5) that two panels is opposed, the flange left and right both ends of the surface of adapter sleeve (4) are respectively against the large end face of two disk springs (5), the left and right small end face of disk spring (5) is resisted against the right flange end face of semicircle back-up ring (6) in traction bars (2) annular groove and traction bars (2) respectively, the size of external diameter when adapter sleeve (4) internal diameter is greater than disk spring (5) deformation limit, slip ring (7) outer cylinder is truncated cone shape, small end inner diameter when its maximum gauge is less than disk spring (5) free state.

2. towed vehicle trailer coupling according to claim 1, is characterized in that, the opposed use of described two disk springs (5), and two disk spring small ends are in inner side or hold in inner side greatly.

3. towed vehicle trailer coupling according to claim 1, is characterized in that, draw bar (1) adopts with adapter sleeve (4) and is threaded, and adapter sleeve (4) profile is regular hexagon or octagon.

4. towed vehicle trailer coupling according to claim 1, is characterized in that, draw bar (1) and adapter sleeve (4) adopt pin (3) locking fixing.

5. the towed vehicle trailer coupling according to any one of claim 1-4, is characterized in that, disk spring (5) small end is enclosed within traction bars (2) by slip ring (7).

6. towed vehicle trailer coupling according to claim 5, is characterized in that, described slip ring (7) outer cylinder two ends are truncated cone shape.

7. towed vehicle trailer coupling according to claim 1, is characterized in that, described back-up ring (6) is two semicircles.