Air spring fatigue running-in platform

Abstract

The utility model discloses a gas spring fatigue running-in platform which comprises a supporting frame, a linear type reciprocating driving mechanism is arranged on the supporting frame, a turnover frame hinged to the supporting frame is arranged above the linear type reciprocating driving mechanism, a turnover shaft of the turnover frame is perpendicular to the linear type reciprocating driving mechanism, and the linear type reciprocating driving mechanism is arranged above the turnover frame. A bearing rod, parallel to the overturning shaft, on the overturning frame is connected with a sliding block of the linear reciprocating driving mechanism through a connecting rod, a load block is arranged on the bearing rod, and a first connecting piece used for being connected with a gas spring to be tested is arranged on an overturning arm, perpendicular to the bearing rod, on the overturning frame. The support frame is provided with a second connecting piece used for connecting the other end of the gas spring to be tested. The gas spring fatigue running-in testing device gives consideration to reciprocating motion and rotary motion fatigue durability tests of the gas spring, is simple in structure, convenient to use and low in maintenance cost, and greatly improves the fatigue running-in testing efficiency of the gas spring.

Description

TECHNICAL FIELD

[0001] The utility model relates to air spring performance test technique field especially air spring fatigue running platform. BACKGROUND

[0002] Air spring is a kind of industrial fittings with support, buffering, braking, height adjustment and angle adjustment functions. When product selection and life verification are carried out, performance test needs to be carried out through fatigue running platform. However, the existing fatigue running platform can only test the fatigue durability of reciprocating motion of air springs of different models and different lengths, and cannot test the fatigue durability of rotating motion of one end of air spring around the fulcrum. SUMMARY

[0003] In order to solve the above problems, the utility model provides a kind of air spring fatigue running platform, and the following technical solutions can be specifically adopted:

[0004] The air spring fatigue running platform provided by the utility model, including support frame, be provided with linear reciprocating drive mechanism on the support frame, be provided with the hinge connection of the support frame on the linear reciprocating drive mechanism upper, the hinge shaft of the turnover frame is perpendicular to linear reciprocating drive mechanism, the bearing bar of parallel setting on the turnover frame with the hinge shaft is connected with the slider of linear reciprocating drive mechanism by connecting rod, be provided with load block on the bearing bar, be provided with the first connecting piece for connecting the air spring to be measured on the turnover arm perpendicular to bearing bar on the turnover frame, and be provided with the second connecting piece for connecting the other end of the air spring to be measured on the support frame.

[0005] The linear reciprocating drive mechanism adopts synchronous belt driven by stepper motor, and guide shafts are arranged in parallel on both sides of the synchronous belt, and the slider is arranged on the synchronous belt and is connected with the guide shafts in sliding mode.

[0006] An origin sensor is arranged near the starting position of the slider, and a position sensor is arranged near the end position of the slider.

[0007] The connecting rod is arranged along the midperpendicular plane of the bearing bar, and the two ends of the connecting rod are connected with the slider and the bearing shaft in hinge connection mode respectively.

[0008] The load block is two, and is symmetrically arranged on both sides of the midperpendicular plane of the bearing bar.

[0009] The turnover arm is two, and each turnover arm is provided with one air spring to be measured, and the turnover arm and the air spring to be measured are symmetrically arranged on both sides of the midperpendicular plane of the bearing bar, and the turnover arm and the air spring to be measured are parallel to the midperpendicular plane of the bearing bar.

[0010] The first connecting piece and the second connecting piece are the same structure, and a plurality of air spring connecting positions are arranged on the first connecting piece and the second connecting piece.

[0011] The air spring fatigue running and mixing platform has the advantages that the linear motion mechanism and the overturning mechanism are combined through the connecting rod, the installation position of the to-be-tested air spring is reasonably arranged, the reciprocating motion and the rotating motion fatigue durability test of the air spring are considered, the structure is simple, the use is convenient, the maintenance cost is low, the air spring fatigue running and mixing test efficiency can be greatly improved, the test accuracy is high due to the high similarity with the actual use environment of the air spring, and reliable experimental data can be provided for product selection and service life test. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic view of the utility model.

[0013] Figure 2 is Figure 1 is a structural schematic view of the first connecting piece and the second connecting piece.

[0014] Figure 3 is a structural schematic view of the fixing piece suitable for cooperating with the first connecting piece and the second connecting piece. DETAILED DESCRIPTION

[0015] The embodiment is implemented under the premise of the technical scheme of the utility model, a detailed implementation mode and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0016] As Figures 1-3The utility model discloses a gas spring fatigue running platform, including support frame 1, this support frame 1 is divided into two layers, the lower layer is provided with linear reciprocating drive mechanism, in the embodiment, linear reciprocating drive mechanism adopts synchronous belt 22 of step motor 21 drive, and the both sides of synchronous belt 22 are provided with guide shaft 23 (optical axis or linear guide rail) in parallel, and synchronous belt 22 is fixedly installed with sliding block 24, and sliding block 24 is connected with guide shaft 23 sliding simultaneously. In order to monitor the position of sliding block 24, the original point sensor 25 is installed near its starting position, and the end position is installed with the in-place sensor 26. The upper layer of support frame 1 is provided with turnover frame, and the turnover frame is rectangular frame, which is composed of turnover shaft 31, supporting rod 32 and two turnover arms 33. The turnover shaft 31 is perpendicular to the synchronous belt 22, and is hingedly connected with the support frame 1. The supporting rod 32 parallel to the turnover shaft 31 is connected with the sliding block 24 of the linear reciprocating drive mechanism through the connecting rod 4, the connecting rod 4 is arranged along the median plane of the supporting rod 32, and the both ends of the connecting rod 4 are hingedly connected with the sliding block 24 and the supporting rod 32 respectively. A load block 5 is installed on the both sides of the median plane of the supporting rod 32, and the two load blocks 5 can be adjusted in weight, but the weight should be consistent. The turnover arms 33 perpendicular to the supporting rod 32 are two, and each turnover arm 33 is provided with a first connecting piece 71 for connecting the gas spring 6 to be tested. The vertical rod of the support frame 1 is provided with a second connecting piece 72 for connecting the other end of the gas spring 6 to be tested. The turnover arms 33 and the gas spring 6 to be tested are symmetrically arranged on the both sides of the median plane of the supporting rod 32, and the turnover arms 33 and the gas spring 6 to be tested are parallel to the median plane of the supporting rod 32. The first connecting piece 71 and the second connecting piece 72 have the same structure, which can be used to install the gas spring 6 with a ball head screw, and a plurality of gas spring connecting positions are arranged on each connecting piece to adapt to the installation of different gas springs or adjust the installation position. Figure 2 When the head of the gas spring is a through hole, a fixing piece as shown in Figure 3 is used to fix the gas spring on the first connecting piece 71 and the second connecting piece 72, and the position of the end of the gas spring is limited by the screw and the gasket.

[0017] In use, first, the positions of the first connecting piece 71 and the second connecting piece 72 are adjusted according to the stroke and fulcrum position of the gas spring, then the gas spring is installed, and then the gas spring is opened to the limit position to adjust the position of the in-place sensor 26. After that, the running speed, running distance, acceleration, number of reciprocating movements and other parameters of the step slider 21 are adjusted according to the test requirements, and finally the step motor 21 is started to drive the linear reciprocating drive mechanism to rotate the turnover frame, so that the gas spring performs reciprocating movement and rotary movement at the same time, achieving the purpose of fatigue test.

[0018] Due to the utility model, the running position of the sliding block 24 is adjustable, the connection position of the first connecting piece 71 and the second connecting piece 72 is adjustable, therefore, the installation of the gas spring of different models, different lengths and different installation forms can be adapted.

[0019] It should be noted that, in the description of the utility model, the terms indicating the orientation or position relationship, such as "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer" and the like, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

Claims

1. A gas spring fatigue run-in platform, characterized by: The support frame is provided with a linear reciprocating drive mechanism, and a turnover frame is hingedly connected above the linear reciprocating drive mechanism, and the turnover shaft of the turnover frame is perpendicular to the linear reciprocating drive mechanism; a supporting rod parallel to the turnover shaft is connected to the slider of the linear reciprocating drive mechanism through a connecting rod; the supporting rod is provided with a load block; a first connecting piece for connecting a to-be-tested gas spring is arranged on a turnover arm perpendicular to the supporting rod; and a second connecting piece for connecting the other end of the to-be-tested gas spring is arranged on the support frame.

2. The gas spring fatigue run-in platform of claim 1, wherein: The linear reciprocating drive mechanism adopts a synchronous belt driven by a stepping motor, and guide shafts are arranged on both sides of the synchronous belt; the slider is arranged on the synchronous belt and is slidably connected to the guide shafts.

3. The gas spring fatigue run-in platform of claim 1, wherein: An original point sensor is arranged near the starting position of the slider, and a position sensor is arranged near the terminal position of the slider.

4. The gas spring fatigue run-in platform of claim 1, wherein: The connecting rod is arranged along the mid-vertical plane of the supporting rod, and the two ends of the connecting rod are hingedly connected to the slider and the supporting shaft respectively.

5. The gas spring fatigue run-in platform of claim 1, wherein: The load block is symmetrical and arranged on both sides of the mid-vertical plane of the supporting rod.

6. The gas spring fatigue run-in platform of claim 1, wherein: The turnover arm is symmetrical and arranged on both sides of the mid-vertical plane of the supporting rod.

7. The gas spring fatigue run-in platform of claim 1, wherein: The first connecting piece and the second connecting piece are the same in structure, and a plurality of gas spring connecting positions are arranged on the first connecting piece and the second connecting piece.

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