CN101126679A

CN101126679A - Automobile bump test tractor truck

Info

Publication number: CN101126679A
Application number: CNA2007101326751A
Authority: CN
Inventors: 陈晓东; 李纯金; 朱西产
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2007-09-18
Filing date: 2007-09-18
Publication date: 2008-02-20
Anticipated expiration: 2027-09-18
Also published as: CN100535629C

Abstract

The utility model relates to a towing vehicle used for automobile crash tests, belonging to a motor traction system for the automobile crash safety performance test, which comprises a body, a directive wheel, a camshaft, a cam handle, a fixed clamp splice, a moveable clamp splice, a draw hook and an anti-dropping ratchet wheel. The utility model is characterized in that a moving guiding bar, a reset spring, and a safety pin are added; wherein, the moving guiding bar is fixed on an apron plate at the bottom of the body; the fixed clamp splice and the moveable clamp splice are changed into contact on curved surface; the moveable clamp splice is sleeved on the moveable guiding bar; the reset spring is sleeved on the right end of the moveable guiding bar; and the safety pin is positioned on the handle of the cam. The utility model has the advantages of simple structure, low manufacturing cost, high reliability and strong versatility, satisfying the traction requirement of automobile crash tests.

Description

Automobile bump test tractor truck

Technical field

The present invention relates to automotive crash safety performance test motor trailer system, refer in particular to automobile bump test tractor truck.

Background technology

Along with domestic Compulsory vehicle passive security rules improve and the automobile star is estimated the enforcement of (C-NCAP), the construction of automotive crash safety testing laboratory increases rapidly in China.The vehicle impact testing trailer system adopts the motor traction substantially at present, utilize the band transmission principle, drive wire rope by the motor rotary drum, by tractor the motion of wire rope is passed to test vehicle, and be implemented in instruction carriage and when distance knocked object (for example: rigid wall, rigid column, changeability energy absorbent block etc.) certain distance, cut off transmission of power between wire rope and the instruction carriage, the warranty test car under free state with the speed bump knocked object of regulation.Tractor divides two classes at present: a class is that tractor two ends and wire rope are rigidly connected, and wire rope disconnects, and this tractor scheme is very high to the control requirement of motor, wire rope stop motion in the time of must be able to guaranteeing dolly arrival assigned position; Another kind of tractor separates with wire rope, be that wire rope seals, tractor is fixed by clamp system and wire rope, adopt mechanical release unit to guarantee to separate with tractor at assigned position wire rope power, and guarantee to break away between instruction carriage and the tractor, have slippage between such tractor ubiquity briquetting of present domestic use and the wire rope, separate untimely thoroughly, problem such as escapement is complicated and reliability is low.The invention belongs to the second class tractor, solved the problem that such tractor exists at present, be characterized in the reliability height, highly versatile, low to the Electric Machine Control requirement, structure is also fairly simple, and is cheap.

Summary of the invention

Automobile bump test tractor truck, comprise: vehicle body, angle sheave, camshaft, cam handle, fixedly fixture block, mobile fixture block, traction hook, anticreep ratchet, it is characterized in that: increased mobile guide bar, back-moving spring and safety pin, the mobile guide bar is fixed on the body bottom skirtboard, fixedly fixture block changes curved surface into mobile fixture block and contacts, mobile fixture block is enclosed within on the mobile guide bar, and back-moving spring is enclosed within the right-hand member of mobile guide bar, and safety pin is positioned on the cam handle.

Be provided with a convex in the lower end of mobile fixture block, play the effect that comes off of preventing.

Fixedly fixture block contact with mobile fixture block curved surface can for: fixedly fixture block is a plurality of concave surfaces, a plurality of convex surfaces of mobile fixture block for cooperating with fixing fixture block; Perhaps fixedly fixture block is a plurality of convex surfaces, and a plurality of concave surfaces of mobile fixture block for cooperating with fixing fixture block play the increase contact area, prevent the effect of traction steel wire iope slippage.

It is timely and thorough that mobile guide bar, back-moving spring have guaranteed that clamp system separates with haulage cable, and safety pin has improved tractor and prevented the reliability that traction rope breaks away from,

Apparatus of the present invention are to carry out the key equipment of automotive crash safety test, how the technical program has solved unmanned and do not have instruction carriage under self power resources (engine is not worked or do not had an engine) state or mobile trolley used traction test speed of a motor vehicle to regulation, and guarantee in good time and be pulled car to realize breaking away from, satisfy being pulled car clashes into quilt bump object with free inertial states at the regulation vehicle speed testing requirements.

Description of drawings

Fig. 1 is the composition structural scheme of mechanism of automotive crash safety test trailer system;

Fig. 2 is the side B-B cut-open view of tractor;

Fig. 3 is a tractor clamp system position C-C cut-open view;

Fig. 4 is a tractor angle sheave position E-E cut-open view;

Fig. 5 is the tractor vertical view;

Fig. 6 is the tractor upward view.

1-direct current generator 2-drive drum 3-haulage cable 4-be pulled car 5-traction rope 6-tractor 7-rotary drum 8-angle sheave 9-ratchet 10-traction hook 11-rail 12-safety pin 13-cam handle 14-vehicle body 15-camshaft 16-mobile guide bar 17-back-moving spring 18-fixedly fixture block 19-move fixture block

Embodiment

The present invention further specifies as follows in conjunction with the accompanying drawings:

The automotive crash safety test trailer system that the present invention is suitable for constitutes referring to accompanying drawing 1, adopt direct current generator 1 to drive drive drum 2, haulage cable 3 is closed-loop and is wrapped on drive drum 2 and the rotary drum 7, adopt hydraulic tensioning mode tensioning wire rope, according to the band transmission principle, the linear velocity of haulage cable 3 is directly proportional with the rotating speed and drive drum 2 radiuses of direct current generator 1.

Concrete principle of work of tractor and operation steps are:

1) 4 angle sheaves 8 cooperate (see figure 4) with the operative end surface of rail 11, restriction tractor Y to Z to degree of freedom, guarantee that tractor is along rail direction rectilinear motion;

2) according to vehicle traveling direction, can select tractor 6 and haulage cable 3 (toward/return) in one fixing; If the wire rope that adopts two tractors to connect the different motion direction respectively can be realized car and car head-on collision easily;

3) haulage cable 3 is put into fixedly in the middle of fixture block 18 and the mobile fixture block 19, rotating cam handle 13, camshaft 15 workplaces promote effect that mobile fixture block overcomes back-moving spring 17 and move toward fixing fixture block directions along mobile guide bar 16, and haulage cable is clamped;

4) in the clamped condition position, insert safety pin 12 (see figure 5)s, loosening to prevent that camshaft from taking place in distraction procedure, safety pin is disposable expendable part, is subjected to being cut off under certain external impact load at cam handle;

5) fixedly fixture block 18 is the concave-convex curved surface shape and the (see figure 6) of coincideing mutually with mobile fixture block 19 workplaces, can increase the contact area between haulage cable and the fixture block, improve traction friction force, prevent that slippage from appearring in haulage cable and fixture block, and the lower surface convex of mobile fixture block can prevent that haulage cable is from bottom slippage (see figure 3);

6) traction rope (iron chains or coarse-wire rope) 5 is passed traction hook 10, the two ends of traction rope are fixed with being pulled car 4, and the tractive force of direct current generator 1 passes to by haulage cable 3, tractor 6, traction rope 5 and is pulled car 4;

7) traction hook 10 the place aheads are equipped with a ratchet 9, when the clamped state of haulage cable, the section of a ratchet on the ratchet is subjected to the spacing (see figure 2) of guiding end face of moving slider, can only rotate in＜90 degree rotating ranges, can prevent that traction rope breaks away from the traction hook in distraction procedure;

8) rigidly fix block in the position prepackage one that needs tractor 6 and haulage cable 3 to break away from, behind cam handle 13 bump blocks, cam handle 13 is cut off safety pin 12, camshaft 15 counter-rotatings discharge clamping force, mobile fixture block 19 acts on away from fixing fixture block 18 at back-moving spring 17, and haulage cable 3 breaks away from tractors 6;

9) when moving slider 19 moved under back-moving spring 17 effects, the spacing of ratchet also eliminated, and ratchet can freely rotate;

10) fixed stop back certain distance is equipped with crash energy absorption equipment, tractor 6 is slowed down and stop, be pulled car 4 and continue motion under inertia effect, traction rope 5 breaks away from traction hook 10 with being pulled car 4 motions and rotating ratchet 9, is pulled car 4 and separates with tractor 6.

The invention solves between clamp and the haulage cable and be prone to problem of slip, improved the reliability of impact test distraction procedure, and can realize between traction power source (haulage cable) and the tractor, tractor fast and effeciently separates with being pulled between the car, and the warranty test velocity accuracy is had key effect.Whole apparatus structure is simple, low cost of manufacture, reliability height, highly versatile, satisfies vehicle impact testing traction requirement.

Claims

1. automobile bump test tractor truck (6), comprise: vehicle body (14), angle sheave (8), camshaft (15), cam handle (13), fixing fixture block (18), mobile fixture block (19), traction hook (10), anticreep ratchet (9), it is characterized in that: increased mobile guide bar (16), back-moving spring (17) and safety pin (12), mobile guide bar (16) is fixed on the skirtboard of vehicle body (14) bottom, fixedly fixture block (18) changes curved surface into mobile fixture block (19) and contacts, mobile fixture block (19) is enclosed within on the mobile guide bar (16), back-moving spring (17) is enclosed within the right-hand member of mobile guide bar (16), and safety pin (12) is positioned on the cam handle (13).

2. automobile bump test tractor truck according to claim 1 (6) is characterized in that: the lower end at mobile fixture block (19) is provided with a convex.

3. automobile bump test tractor truck according to claim 1 (6), it is characterized in that: fixedly fixture block (18) contacts with mobile fixture block (19) curved surface and is: fixedly fixture block (18) surface of contact is a plurality of concave surfaces, a plurality of convex surfaces of mobile fixture block (19) surface of contact for cooperating with fixing fixture block (18) surface of contact; Perhaps fixedly fixture block (18) surface of contact is a plurality of convex surfaces, a plurality of concave surfaces of mobile fixture block (19) surface of contact for cooperating with fixing fixture block (18) surface of contact.