CN200989869Y - Steering wheel strength detecting equipment - Google Patents

Abstract

The utility model discloses a steering wheel strength inspecting device which includes a steering wheel axial pressure cylinder and a steering wheel axial pressure cylinder frame which is used to fix the steering wheel axial pressure cylinder; the steering wheel axial pressure cylinder includes a steering wheel axial pressure cylinder piston rod which can impose the axial pressure to the steering wheel. The utility model also includes a steering wheel turning torsion cylinder and a steering wheel turning torsion cylinder frame which is used to fix the steering wheel turning torsion cylinder; the steering wheel turning torsion cylinder includes a steering wheel turning torsion cylinder piston rod; the rim of the steering wheel is also provided with a fixing block; the steering wheel turning torsion cylinder piston rod can push the fixing block, thus imposing the turning torsion to the steering wheel. The steering wheel strength inspecting equipment of the utility model takes the cylinder as a force source to replace with a heavy block, can continuously adjust the magnitude of the imposing force, therefore, the force deformation test of the steering wheel in the international standard can be conveniently implemented, and the test inspecting efficiency can be improved.

Description

The bearing circle strength detection equipment

Technical field

The utility model relates to a kind of bearing circle strength detection equipment.

Background technology

Bearing circle is extremely important parts on the automobile, as its performance defectiveness, particularly undercapacity slightly, is easy to cause serious security incident when then running into accident or emergency condition in vehicle '.For avoiding the defective of bearing circle, special provision must be carried out the stress deformation test to bearing circle in national standard QCT563 (1999) the vehicle steering test method, comprises the axial force test of the axial force test of whole Loading Method, some Loading Method and turns to torsional test.Every test in this standard needs by pouring weight and dial gauge.But because the weight change of pouring weight disperses, reinforcing can not be regulated continuously in the test.

The utility model content

The utility model is exactly in order to overcome above deficiency, proposed a kind of bearing circle strength detection equipment that can regulate continuously the application of force of bearing circle in test.

For achieving the above object, bearing circle strength detection equipment of the present utility model, comprise steering wheel shaft to pressure cylinder and be used for fixing described steering wheel shaft to the steering wheel shaft of pressure cylinder to the pressure cylinder support, steering wheel shaft comprises steering wheel shaft to the pressure cylinder piston rod to pressure cylinder, and described steering wheel shaft can apply continuous axle pressure to bearing circle to the pressure cylinder piston rod.

Further, also comprise wheel steering torsion cylinder and the wheel steering torsion cylinder support that is used for fixing described wheel steering torsion cylinder, wheel steering torsion cylinder comprises wheel steering torsion cylinder piston rod, also be provided with fixed block on the steering wheel rim, bearing circle applied the continuous torsion that turns to thereby wheel steering torsion cylinder piston rod can promote fixed block.

Further, comprise also being used for fixing wheel steering torsion cylinder support and the steering wheel shaft base plate to the pressure cylinder support that base plate is provided with optical axis, optical axis is positioned at the below of steering wheel shaft to the pressure cylinder piston rod.

Also be provided with first splined shaft that is used for fixing bearing circle on the described base plate, the distance between first splined shaft and wheel steering torsion cylinder support is that the radius of bearing circle turns to torsion to guarantee that the described fixed block of described wheel steering torsion cylinder piston pole pair applies.

Also be provided with second splined shaft that is used for fixing bearing circle on the described base plate, the distance between second splined shaft and the optical axis is the radius of bearing circle.

Bearing circle strength detection equipment of the present utility model also comprises bearing and bearing bracket stand, and bearing bracket stand is connected with base plate, and bearing is pressed into bearing bracket stand, and bearing matches with second splined shaft second splined shaft can be rotated on bearing.

Described bearing is a single-row tapered roller bearing.

Also be provided with first tensimeter and second tensimeter that are used to show cylinder pressure on the base plate.

Bearing circle strength detection equipment of the present utility model utilizes cylinder to be afterburning source, substituted pouring weight, can regulate continuously afterburning size, and be provided with the axle pressure cylinder simultaneously and turn to the torsion cylinder, make the bearing circle stress deformation that to finish simultaneously easily in the GB test, thereby travel direction dish intensity detection more accurately, and improved the detection efficiency of test.

Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.

Description of drawings

Overall construction drawing when Fig. 1 is the utility model embodiment detected state;

Equipment lateral plan when Fig. 2 is the utility model embodiment detected state;

Fig. 3 is that the utility model embodiment does not add the overall construction drawing that bearing circle detects;

Fig. 4 is the whole Loading Method axial force test synoptic diagram of the utility model embodiment;

Fig. 5 is some Loading Method axial force test synoptic diagram of the utility model embodiment;

Fig. 6 be the utility model embodiment turn to the torsional test synoptic diagram;

Fig. 7 is the cylinder motor circuit schematic diagram of the utility model embodiment.

Embodiment

The general structure of the bearing circle strength detection equipment of the utility model embodiment partly is made up of to pressure cylinder support 14 and wheel steering torsion cylinder support 2, second tensimeter 19 and first tensimeter 16, button 15 etc. to pressure cylinder 8 and wheel steering torsion cylinder 3, second splined shaft 9 and first splined shaft 4, optical axis 13, bearing 10, bearing bracket stand 11, bearing cap 12, steering wheel shaft steering wheel shaft shown in Fig. 1,2 and 3.

Whole Loading Method test in the axial force test and 8 reinforcings of some Loading Method test direction of passage dish axle pressure cylinder.Steering wheel shaft is vertically fixed on steering wheel shaft on pressure cylinder support 14 to pressure cylinder 8, steering wheel shaft is connected with base plate 17 usefulness screws to pressure cylinder support 14 biside plates, base plate 17 is welded on the underframe 18, optical axis 13 is used for when the whole Loading Method of axial force test bearing circle being carried out spacing, and the bottom has been attacked screw thread and used nut lock on base plate 17.Second splined shaft 9 is used for when some Loading Method of axial force test bearing circle being fixed, and the female spline in male splines on the axle and the bearing circle axle sleeve is suitable, makes can not twist with respect to splined shaft when the bearing circle axle sleeve inserts splined shaft.Bearing 10 matches with second splined shaft 9 second splined shaft 9 can be rotated on bearing 10, and bearing 10 is pressed into bearing bracket stand 11, and bearing bracket stand 11 bottoms have been attacked screw thread and used nut lock on base plate 17.Bearing 10 is a single-row tapered roller bearing, but not only bearing radial force but also can bear axial force, and bearing cap 12 covers on bearing 10.Whole Loading Method load(ing) point and some Loading Method load(ing) points also are that the distance between the optical axis 13 and second splined shaft 9 is 182.25mm, and promptly the bearing circle radius is realized finishing two different method of testings in the axial force test with a cylinder.

Turning to the torsional test experiment is that the direction of passage dish turns to torsion cylinder 3 afterburning.Wheel steering torsion cylinder 3 is fixed on the wheel steering torsion cylinder support 2, wheel steering torsion cylinder support 2 is connected with base plate 17, wheel steering torsion cylinder 3 can be perpendicular to the reinforcing of bearing circle radial direction, the direction of passage dish turns to torsion cylinder piston rod 31 to act on the fixed block 1, fixed block 1 usefulness screw is clamped on the wheel rim of bearing circle, make it radially displacement can not arranged, drive bearing circle and change, thereby measure torsion with certain angle.First splined shaft 4 is used for when turning to torsional test bearing circle being fixed, and the female spline in male splines on the axle and the bearing circle axle sleeve is suitable, makes can not twist with respect to splined shaft when the bearing circle axle sleeve inserts splined shaft.First splined shaft 4 is connected with fixed mount 6, bottom nut lock.The distance of first splined shaft 4 and wheel steering torsion cylinder support 2 be the radius of bearing circle during with warranty test wheel steering torsion cylinder piston rod 31 can act on the fixed block 1.Orienting lug 5 is contained in the physical strength that is used to strengthen first splined shaft 4 on the fixed mount 6.Fixed mount 6 links to each other with base plate 17 by reinforcement 7.

Among the utility model embodiment, the whole Loading Method test of axial force test as shown in Figure 4.By standard code, whole loading force≤600N vertically is added in steering wheel shaft and puts.Its test procedure is as follows:

Before the starting outfit, check at first whether gas circuit and circuit connect.

Mark is a bit at first measured the outside diameter d 0 and the bearing circle height h0 of wheel rim on gauge point with slide calliper rule and ruler on the wheel rim of bearing circle, then steering wheel rim is lain in a horizontal plane in bright and clean, smooth examination pallet face towards ground level, promptly on the base plate 17.

After inspection finishes, open general supply, regulate cylinder pressure≤0.3Mpa, pressure value is directly shown by second tensimeter 19.Press " cylinder 2 advances " (being corresponding axle pressure cylinder) button, this moment circuit working as shown in Figure 7, switch S B4 connects, pilot lamp HL2 is bright, second solenoid valve 82, steering wheel shaft advances to pressure cylinder 8, steering wheel shaft to pressure cylinder piston rod 81 vertical loading on bearing circle, under load≤600N, concrete numerical value is referring to table 1, time relay KA2 picks up counting, and room temperature keeps unloading after 20 minutes, and test is finished.Press switch S B5, pilot lamp HL2 goes out, 82 outages of second solenoid valve, and steering wheel shaft is return to pressure cylinder 8, and KA2 disconnects.Room temperature was placed 20 minutes again, was determined at outside diameter d 1 and height h1 on the gauge point, and obtained set deformation volume.Test findings represents that with the change in size number percent before and after the application of load computing method are as follows.

$\mathrm{Fd}=\frac{d1-d0}{\mathrm{<figure-callout\; id="0"\; label="d"\; filenames="Y20062014544500091.png"\; state="\{\{state\}\}">d</figure-callout>}0}\&times;100\%......................\left(1\right)$

$\mathrm{Fh}=\frac{h0-h1}{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="Y20062014544500091.png"\; state="\{\{state\}\}">h</figure-callout>}0}\&times;100\%......................\left(2\right)$

In the formula:

Tip diameter set deformation volume when Fd--is subjected to axial force, %;

Steering wheel shaft was to set deformation volume when Fh--was subjected to axial force, %;

D0, d1--load fore-and-aft direction plate wheel edge diameter, mm;

H0, h1--load fore-and-aft direction dish axial height, mm.

For some Loading Method in the axial force test, same as shown in Figure 5, before the starting outfit, check whether gas circuit and circuit connect.By standard code, some loading≤300N vertically is added on the middle wheel rim of any two spokes of bearing circle.Its step is as follows:

Bearing circle is horizontally fixed on first splined shaft 4, after inspection finishes, opens general supply, regulate cylinder pressure≤0.15Mpa, press " cylinder 2 advances " button, cylinder piston rod 81 acts directly on the steering wheel rim, begin to load, under load≤300N, time relay KA2 picks up counting, and keeps unloading after 20 minutes, room temperature was placed 20 minutes again, measure 2 points of symmetry on the wheel rim, No. 1 and No. 2 locational deflections promptly shown in Figure 4, and obtain set deformation volume.

Axial force stress deformation amount and set deformation volume computing method are as follows.

Fδ＝δ1-δ2 …………………………………… (3)

In the formula:

F δ--steering wheel rim set deformation volume, mm;

δ 1, δ 2--be respectively No. 1 and No. 2 positions on the axial deflection that records, mm.

For turning to torsional test, as shown in Figure 6, in the tangential direction reinforcing of steering wheel rim, by standard code, peak torque is about 135Nm ± 3Nm.Its step is as follows:

Before the starting outfit, check whether gas circuit and circuit connect.

Bearing circle is assemblied on the base plate 17, and a certain corresponding point are marked on base plate 17 and bearing circle.After inspection finishes, open general supply, regulate cylinder pressure≤0.3Mpa, pressing " cylinder 1 advances " (promptly turning to the torsion cylinder accordingly) button begins to load, at this moment switch S B2 connects, pilot lamp HL1 is bright, first solenoid valve 32, wheel steering torsion cylinder 3 advances, time relay KA1 gets electric timing, and wheel steering torsion cylinder piston rod 31 promotes to be fixed on the fixed block 1 on the steering wheel rim, and thrust direction is perpendicular to the bearing circle radius, unload after applying moment of torsion≤135Nm ± 3Nm, repeat 20 times.The deflection of gauge point on the gauge point skew base plate 17 on measurement and the record bearing circle.Finish Deng test, press switch S B3, pilot lamp HL1 goes out, 32 outages of first solenoid valve, and wheel steering torsion cylinder 3 is return, and time relay KA1 disconnects.Reversing set deformation volume represents with permanent twist distortion angle.Permanent twist distortion angle computing formula is as follows

α＝tan(I/L) ………………………………………(4)

In the formula:

α--reverse the permanent strain angle (°);

I--reverses permanent circumferentially deflection, mm;

L--bearing circle radius, mm.

Table 1

F3 steering wheel shaft power, torsional test instrument pressure pressure conversion table
					Axle power		Torsion
Unit: Mpa	Unit: N	Unit: Mpa	Unit: N	Moment of torsion: N.m
					0.6	1200	0.6	1200	240
0.5	1000	0.5	1000	200
					0.4	800	0.4	800	160
0.3	600	0.3	600	120
					0.25	500	0.25	500	100
0.2	400	0.2	400	80
					0.15	300	0.15	300	60
0.1	200	0.1	200	40
					0.05	100	0.05	100	20

Bearing circle strength detection equipment among the utility model embodiment can be finished all the stress deformation tests in the national standard simultaneously; Institute's reinforcing can be regulated continuously, can easily test that different afterburning bearing circle down are out of shape or the ability of resistance to deformation; Both can be used for the detection test of bearing circle, also can be used for the check in the bearing circle production run.

Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims (8)

1. bearing circle strength detection equipment, it is characterized in that, comprise steering wheel shaft to pressure cylinder (8) and be used for fixing described steering wheel shaft to the steering wheel shaft of pressure cylinder (8) to pressure cylinder support (14), described steering wheel shaft comprises steering wheel shaft to pressure cylinder piston rod (81) to pressure cylinder, and described steering wheel shaft can apply continuous axle pressure to bearing circle to pressure cylinder piston rod (81).

2. bearing circle strength detection equipment as claimed in claim 1, it is characterized in that, also comprise wheel steering torsion cylinder (3) and be used for fixing the wheel steering torsion cylinder support (2) of described wheel steering torsion cylinder (3), described wheel steering torsion cylinder comprises wheel steering torsion cylinder piston rod (31), also be provided with fixed block (1) on the described steering wheel rim, described wheel steering torsion cylinder piston rod (31) can promote described fixed block (1) thereby bearing circle is applied the continuous torsion that turns to.

3. bearing circle strength detection equipment as claimed in claim 1 or 2, it is characterized in that, also comprise and be used for fixing described wheel steering torsion cylinder support (2) and described steering wheel shaft base plate (17) to pressure cylinder support (14), described base plate (17) is provided with optical axis (13), and described optical axis (13) is positioned at the below of described steering wheel shaft to pressure cylinder piston rod (81).

4. bearing circle strength detection equipment as claimed in claim 3, it is characterized in that, described base plate (17) is provided with first splined shaft (4) that is used for fixing bearing circle, and the distance between described first splined shaft (4) and described wheel steering torsion cylinder support (2) is that the radius of bearing circle turns to torsion to guarantee that described wheel steering torsion cylinder piston rod (31) applies described fixed block (1).

5. bearing circle strength detection equipment as claimed in claim 3 is characterized in that, described base plate (17) is provided with second splined shaft (9) that is used for fixing bearing circle, and the distance between described second splined shaft (9) and the described optical axis (13) is the radius of bearing circle.

6. bearing circle strength detection equipment as claimed in claim 5, it is characterized in that, also comprise bearing (10) and bearing bracket stand (11), described bearing bracket stand (11) is connected with base plate (17), described bearing (10) is pressed into bearing bracket stand (11), and described bearing (10) matches with described second splined shaft (9) and makes described second splined shaft (9) go up rotation at described bearing (10).

7. bearing circle strength detection equipment as claimed in claim 6 is characterized in that, described bearing (10) is a single-row tapered roller bearing.

8. bearing circle strength detection equipment as claimed in claim 3 is characterized in that, also is provided with first tensimeter (16) and second tensimeter (19) that are used to show cylinder pressure on the described base plate (17).

Images