CN201464099U

CN201464099U - Measurement device for engine timing loosening torque

Info

Publication number: CN201464099U
Application number: CN2009201287361U
Authority: CN
Inventors: 余涛; 康涛; 袁志强; 潘小亮
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2009-09-04
Filing date: 2009-09-04
Publication date: 2010-05-12
Anticipated expiration: 2019-09-04

Abstract

The utility model provides a measurement device for engine timing loosening torque, which comprises a connecting disc, a weighing scale body, a weight plate, a hanging rod and a connecting block, wherein the weighing scale body is a strip body; the hanging rod is a rod body; the connecting disc is fixedly connected with one end of the weighing scale body; the other end of the weighing scale body is movably connected with one end of the connecting block through a pin shaft; the other end of the connecting block is fixedly connected with the upper end of the hanging rod; and the lower end of the hanging rod is fixedly connected with the weight plate. The connecting disc is provided with threaded holes for connection with a timing belt pulley. In the measurement device, the connecting disc is connected to the timing belt pulley and weights are added in the weight plate, so that the engine timing loosening torque can be measured by the mass of the weights added when the timing belt pulley slides. The measurement device has the advantages of simple manufacture, low cost, high measurement precision and the like and can improve the quality and reliability of engines tests.

Description

A kind of engine timing becomes flexible torque measuring device

Technical field

The utility model relates to the loosening torque measuring device of a kind of engine timing.

Background technology

The loosening moment of engine timing is must the strict parameter of controlling during engine design is made.Engine when assembling, tighten the timing bolt according to the moment of designing requirement and assembling standard after, the loosening moment of engine timing can reach designing requirement generally speaking, but does not detect the actual size of its loosening moment in the real engine assembling process.If crankshaft end-face, Timing Belt wheel end face, timing bolt end face, timing bolt or bent axle threaded hole, material behavior etc. occur a bit unusual, the serious problems of actual engine timing moment less than design load will appear, cause the timing entanglement of engine, piston and valve collision back piston break, the valve bending, the serious consequence that engine damages.So be necessary very much to measure the loosening moment size of the actual timing of the engine after the assembling, find the matching problem between bent axle, Timing Belt wheel and the timing bolt in advance, reduce the quantity that engine abnormity damages.

The utility model content

Technical problem to be solved in the utility model provides the loosening torque measuring device of a kind of engine timing, make engine operation before, the loosening moment of timing reaches designing requirement, guarantees the operation of the normal safety of engine.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is:

A kind of engine timing becomes flexible torque measuring device, and it comprises terminal pad, scale body, scale pan, suspension rod and contiguous block.

Described scale body is an elongate body, and suspension rod is a rhabodoid, and terminal pad is fixedlyed connected with scale body one end, flexibly connects by bearing pin between the scale body other end and contiguous block one end, and the contiguous block other end is fixedlyed connected with the upper end of suspension rod, the fixedly connected scale pan in the lower end of suspension rod.

The threaded hole that is connected with the Timing Belt wheel is arranged on the described terminal pad.

This measurement mechanism is connected on the Timing Belt wheel by terminal pad, by add counterweight in scale pan, adds the counterweight quality by the institute when the Timing Belt wheel slides, and records the loosening moment of engine timing.

Adopt measurement mechanism of the present utility model, its advantage is:

(1) entire measuring device is made simply, and cost is low.

(2) measuring accuracy is higher, reaches 1%F.S., promptly ± and 5N.m.

(3) can measure comprehensive moment between bent axle, Timing Belt wheel and the timing bolt, this is the other system peculiar function that all is beyond one's reach generally speaking.

By the use of this measurement mechanism, improved the q﹠r of engine test.

Description of drawings

Fig. 1 is the structural representation of the loosening torque measuring device of this engine timing.

Embodiment

As shown in Figure 1, the loosening torque measuring device of this engine timing comprises: terminal pad 6, scale body 3, scale pan 5, suspension rod 4 and contiguous block 1. scale bodies 3 are elongate body, suspension rod 4 is rhabodoid. terminal pad 6 is fixedly connected on scale body 3 one ends, four threaded holes are arranged on terminal pad 6, these four threaded holes respectively with scale body 3, hole correspondence on the Timing Belt wheel 7, pass threaded hole with screw, can with terminal pad 6 respectively with scale body 3, Timing Belt wheel 7 couples together. flexibly connects by pin 2 between the end of the other end of scale body 3 and contiguous block 1, the other end of contiguous block 1 and suspension rod 4 upper ends are fixedly connected. and fixedly connected between suspension rod 4 lower ends and the scale pan 5, for example can adopt bolt to connect. like this, contiguous block 1 can be on scale body 3, around the tie point rotation, thereby the suspension rod 4 that has weights dish 5 also can rotate around tie point.

Use this measurement mechanism, must be connected on the moment of torsion flange of electric dynamometer, carry out the check and correction of moment of torsion, accurately obtain the moment M that the own wt of torque value that 1.0kg power produces and scale body produces ₀, the torque value that produces as 1.0kg power is 4.99Nm.

During measurement, with pin engine crankshaft is fixed earlier, and the Timing Belt wheel is correctly assembled according to designing requirement.Then engine timing bolt looseness torque measuring device and Timing Belt wheel are assembled up, guarantee to measure the level of scale body as far as possible; Then increase counterweight successively on scale pan and write down the quality of counterweight, measurement is finished when being increased to the Timing Belt wheel at last and taking place to slide relatively, at last with adding the counterweight gross mass by formula be converted into moment M:

M＝M ₀+G*4.99(N·m)

Wherein, M ₀The moment that produces for the own wt of scale body;

G is the counterweight gross mass, kg.

Claims

1. an engine timing becomes flexible torque measuring device, and it is characterized in that: it comprises terminal pad, scale body, scale pan, suspension rod and contiguous block;

Described scale body is an elongate body, and suspension rod is a rhabodoid, and terminal pad is fixedlyed connected with scale body one end, flexibly connects by bearing pin between the scale body other end and contiguous block one end, and the contiguous block other end is fixedlyed connected with the upper end of suspension rod, the fixedly connected scale pan in the lower end of suspension rod;

The threaded hole that is connected with the Timing Belt wheel on the described terminal pad.