CN201707274U

CN201707274U - Resonant spring fatigue test device

Info

Publication number: CN201707274U
Application number: CN201020192544XU
Authority: CN
Inventors: 周伟; 张良
Original assignee: GUILIN WINTIME TESTING MACHINE CO Ltd
Current assignee: GUILIN WINTIME TESTING MACHINE CO Ltd
Priority date: 2010-05-14
Filing date: 2010-05-14
Publication date: 2011-01-12
Anticipated expiration: 2020-05-14

Abstract

The utility model discloses a resonant spring fatigue test device, which comprises a spring clamping mechanism generating vibration. The spring clamping mechanism includes an upper swing arm and a lower swing arm in parallel symmetric arrangement; the middles of arm bodies of the upper swing arm and the lower swing arm are hinged; at least one pair of spring pressing heads are respectively arranged at two ends of the upper swing arm and two ends of the lower swing arm; the upper swing arm or the lower swing arm is connected with a driving mechanism leading the upper swing arm or the lower swing arm to repeatedly swing around a hinge point; the lower swing arm is hinged onto an engine base; the upper swing arm is hinged onto a beam between a left vertical column and a right vertical column of the engine base; lifting seats at two ends of the beam are in sliding fit with the vertical columns; the driving mechanism is an eccentric mechanism mounted on the engine base; and eccentric wheels of the eccentric mechanism are placed inside eccentric wheel grooves arranged on the arm body of the lower swing arm. By employing swing of the upper swing arm and the lower swing arm to detect the fatigue strength of a multi-station compression spring, the resonant spring fatigue test device is high in generated resonant frequency and simple in mechanism structure, and is an ideal detecting device of springs of different types and specifications.

Description

Resonant mode spring fatigue experimental provision

(1) technical field:

The utility model relates to the spring experimental facilities, is specially a kind of resonant mode spring fatigue experimental provision.

(2) background technology:

Used (compression) spring fatigue experimental machine has two kinds of forms, be mechanical type and electromagnetic type, its principle of work is to make the spring pressure head that is positioned at (compression) both ends of the spring produce vibration, (compression) spring is loosened repeatedly and compresses, and detects the ability of (compression) spring antifatigue with this.

With mechanical type (compression) spring fatigue experimental machine is example, and vibrative mode is that the spring pressure head at two ends is done relative straight reciprocating motion, (compression) spring is made high-frequency ground compress repeatedly and recover.Because be subjected to the restriction of structure, the spring pressure head frequency of described linear vibration is limited, the machine reliability degree is poor, failure rate height, the detection requirement of incompatibility new varieties, high-quality spring.

(3) utility model content:

The purpose of this utility model is a kind of simple in structure, resonant mode spring fatigue experimental provision that adaptive faculty is strong of design.

Can realize the resonant mode spring fatigue experimental provision of above-mentioned purpose, comprise vibrative spring clamping device, different is top link and the following swing arm that described spring clamping device comprises parallel symmetric arrangement, on, the arm body middle part hinge dress of following swing arm, on, the two ends of following swing arm are respectively provided to less in opposite directions a pair of and spring pressure head that put, clamping (compression) to be measured spring between the spring pressure head, top link or following swing arm connect driving mechanism, driving mechanism makes a wherein swing arm decorate swing repeatedly around hinge, thereby between the spring pressure head, produce resonance, (compression) spring is compressed repeatedly and loosens, reach purpose (compression) spring fatigue intensity detection.

The described hinge of swing arm down is contained on the support, and the top link hinge is contained on the crossbeam of doing the oscilaltion campaign, makes things convenient for the distance between the regulating spring pressure head, is convenient to the detection to the different size spring.

Described crossbeam is slidingly fitted on the left and right pillar of support by the elevating bracket at two ends.

Described driving mechanism is the eccentric wheel driving mechanism that is installed on the support, and the eccentric wheel of eccentric wheel driving mechanism places down in the eccentric race of offering on the swing arm arm body, drives swing arm reciprocally swinging down when eccentric wheel rotates.

For guaranteeing the vertical resonance directions of spring, above the top link, down swing arm below the parallel bar of equal in length is set respectively, each spring pressure head is adorned with the swing arm end and the parallel rod end hinge of position respectively, swing arm, parallel bar and two ends spring pressure head constitute the parallelogram leverage, keep the clip position between the spring pressure head constant in the swing arm swing process.

Advantage of the present utility model:

The utility model resonant mode spring fatigue experimental provision carries out fatigue strength by the swing of upper and lower swing arm to (compression) spring between the multistation spring pressure head and detects, the resonance frequency height that is produced, and mechanism structure is simple, is the desirable checkout equipment of variety classes, specification (compression) spring.

(4) description of drawings:

Fig. 1 is the structural representation of a kind of embodiment of the utility model.

Fig. 2 is the side view of Fig. 1 embodiment.

Figure labelled notation: 1, top link; 2, swing arm down; 3, spring pressure head; 4, support; 5, column; 6, elevating bracket; 7, crossbeam; 8, parallel bar; 9, lifting motor; 10, eccentric wheel; 11, eccentric wheel driving mechanism.

(5) embodiment:

The utility model resonant mode spring fatigue experimental provision is suitable for various (compression) spring is carried out the fatigue strength detection, mainly is made of support 4, column 5, crossbeam 7, eccentric wheel driving mechanism 11 and upper and

lower swing arm

1,2.

As shown in Figure 1, left and right pillar 5 is installed on the support 4, and elevating bracket 6 is slidingly mounted on each column 5, between elevating bracket 6 and the column 5 feed screw nut pair is set, and connects lifting motor 9 by gear train.

The upper and

lower swing arm

1,2 of two equal in length be arranged in parallel, and following swing arm 2 is located on the support 4, and its arm body middle part hinge is contained in column 5 bottoms, and the arm body middle part hinge of top link 1 is contained on the crossbeam 7 that connects between the elevating bracket 6, and described two hinges are decorateeed and are on the perpendicular line; Top link 1 top, down swing arm 2 belows respectively are provided with a parallel bar 8, two parallel bars 8 length consistent all the length with upper and

lower swing arm

1,2 are identical, and the middle part of two parallel bars 8 is cut with scissors and adorned, as shown in Figure 1.

The many of multistation form are arranged in upper and

lower swing arm

1,2 two ends to spring pressure head 3, spring pressure head 3 is hinged with corresponding arm end and rod end respectively in the position, be that top link 1, top parallel bar 8 and two ends spring pressure head 3 and following swing arm 1, parallel beneath bar 8 and two ends spring pressure head 3 all respectively constitute a parallelogram leverage, as shown in Figure 1.

Below spring pressure head 3 is main vibration source, be to realize by the high-frequency reciprocally swinging of swing arm 2 down, the driving mechanism of following swing arm 2 swings is the eccentric wheel driving mechanism 11 that is installed on the support 4, the eccentric wheel 10 of eccentric wheel driving mechanism 11 places down in the eccentric race of the level of offering on swing arm 2 one side arms, as shown in Figure 1.

During the utility model work, lifting motor 9 drives top link 1 and drops to proper height, detected (compression) pressure mounting of the spring many to spring pressure head 3 between, eccentric wheel driving mechanism 11 starts, eccentric wheel 10 rotates and drives bottom arm 2 quick reciprocally swingings, produce high-frequency resonant many between to spring pressure head 3, (compression) spring is compressed repeatedly and is loosened, and begins its detected process.

Detection finishes, and eccentric wheel 10 stops operating, and lifting motor 9 drives top link 1 and rises, and takes out (compression) spring that has detected, reapposes (compression) to be measured spring, repeats said process.

Claims

1. resonant mode spring fatigue experimental provision, comprise vibrative spring clamping device, it is characterized in that: described spring clamping device comprises the upper and lower swing arm (1,2) of parallel symmetric arrangement, the arm body middle part hinge dress of upper and lower swing arm (1,2), the two ends of upper and lower swing arm (1,2) are respectively provided to less a pair of spring pressure head (3), and top link (1) or following swing arm (2) connect makes it decorate the driving mechanism of swing repeatedly around hinge.

2. resonant mode spring fatigue experimental provision according to claim 1 is characterized in that: the described hinge of swing arm (2) down is contained on the support (4), and described top link (1) hinge is loaded on the crossbeam (7) of oscilaltion.

3. resonant mode spring fatigue experimental provision according to claim 2 is characterized in that: the elevating bracket (6) at described crossbeam (7) two ends is slidingly fitted on the left and right pillar (5) of support (4).

4. according to claim 2 or 3 described resonant mode spring fatigue experimental provisions, it is characterized in that: described driving mechanism is for being installed in the eccentric wheel driving mechanism (11) on the support (4), and the eccentric wheel (10) of eccentric wheel driving mechanism (11) places down in the eccentric race of offering on swing arm (2) the arm body.

5. according to each described resonant mode spring fatigue experimental provision in the claim 1～3, it is characterized in that: in the top of described top link (1), the below of swing arm (2) down the parallel bar (8) that equates with pendulum arm length is set respectively, described each spring pressure head (3) is adorned with the swing arm end and the rod end hinge of position respectively.