CN204846095U

CN204846095U - A latch hook is pull to semitrailer saddle

Info

Publication number: CN204846095U
Application number: CN201520649582.6U
Authority: CN
Inventors: 陈兵; 崔国发; 李伟; 王宝留; 史晓翔; 吴爱青
Original assignee: Tangshan Longquan Machinery Co Ltd
Current assignee: Tangshan Longquan Machinery Co Ltd
Priority date: 2015-08-26
Filing date: 2015-08-26
Publication date: 2015-12-09
Anticipated expiration: 2025-08-26

Abstract

The utility model relates to a seat is pull to the semitrailer saddle, specifically is a latch hook is pull to semitrailer saddle. Including the latch hook body, the nonworking face thickness of latch hook body is greater than working face thickness, is the stairstepping structure. The utility model discloses a stairstepping structural design of latch hook body has improved the mechanical properties intensity and the impact resistance of latch hook body, the effect having played increase of service life and practiced thrift cost of maintenance.

Description

Superimposed trailer saddle-type traction base latch hook

Technical field

The utility model relates to superimposed trailer saddle-type traction base, specifically a kind of superimposed trailer saddle-type traction base latch hook.

Background technology

At present, the latch hook of traction base of semitrailer according to the regulation of GB GB/T13880-2007, thickness should≤25mm, in actual use, due to the impact load between itself and towing pin, there will be latch hook and be out of shape the phenomenon even ruptured.

Utility model content

The utility model is intended to solve the problem, thus provides a kind of superimposed trailer saddle-type traction base latch hook that can improve mechanical characteristics and safety in utilization, increase the service life.

The utility model solves described problem, and the technical scheme of employing is:

A kind of superimposed trailer saddle-type traction base latch hook, comprise latch hook body, the non-working surface thickness of latch hook body is greater than driving surface thickness, in ladder-type structure.

Adopt the utility model of technique scheme, compared with prior art, its outstanding feature is:

Designed by the ladder-type structure of latch hook body, improve mechanical properties strength and the impact resistance of latch hook body, serve the effect increasing the service life and save maintenance cost.

As preferably, the utility model further technical scheme is:

The non-working surface thickness of latch hook body is greater than 25mm.

Step Inner arc diameter on the driving surface of latch hook body is greater than the plunger outside diameter of corresponding towing pin, guarantees that towing pin can connect smoothly and hangs on latch hook body.

Latch hook body is the one-shot forming structure of closed-tolerance forging, improves the mechanical characteristics of latch hook body, increases the service life.

Accompanying drawing explanation

Fig. 1 is the utility model example structure front view.

Fig. 2 is the structural representation during the utility model embodiment uses.

In figure: latch hook body 1, non-working surface 2, step 3, driving surface 4, towing pin 5, plunger 6.

detailed description of the invention:

Below in conjunction with embodiment, the utility model is described in further detail, and object is only to understand the utility model content better, and therefore, the cited case does not limit protection domain of the present utility model.

See Fig. 1, non-working surface 2 thickness of latch hook body 1 is greater than driving surface 4 thickness, in ladder-type structure, driving surface 4 thickness is determined according to Standard, increase the thickness of non-working surface 2, the non-working surface thickness of latch hook body is greater than 25mm, thus the integral thickness of latch hook body 1 is increased, improve mechanical properties strength and the impact resistance of latch hook body 1, latch hook body 1 is the one-shot forming structure of closed-tolerance forging, improve the mechanical characteristics of latch hook body 1, increase the service life, step Inner arc diameter on the driving surface 4 of latch hook body 1 is greater than plunger 6 outside diameter of corresponding towing pin 5, guarantee that towing pin 5 can connect smoothly to hang on latch hook body 1.

The foregoing is only the better feasible embodiment of the utility model, not thereby limit to interest field of the present utility model, the equivalence change that all utilization the utility model specification sheetss and accompanying drawing content thereof are done, be all contained within interest field of the present utility model.

Claims

1. a superimposed trailer saddle-type traction base latch hook, comprises latch hook body, it is characterized in that: the non-working surface thickness of latch hook body is greater than driving surface thickness, in ladder-type structure.

2. superimposed trailer saddle-type traction base latch hook according to claim 1, is characterized in that: the non-working surface thickness of latch hook body is greater than 25mm.

3. superimposed trailer saddle-type traction base latch hook according to claim 1, is characterized in that: the step Inner arc diameter on the driving surface of latch hook body is greater than the plunger outside diameter of corresponding towing pin.

4. superimposed trailer saddle-type traction base latch hook according to claim 1, is characterized in that: latch hook body is the one-shot forming structure of closed-tolerance forging.