CN221148295U - Laser alignment device for clamping sheet-shaped sample of fatigue testing machine - Google Patents

Abstract

The utility model discloses a laser alignment device for clamping a sheet sample of a fatigue testing machine, which comprises a base, a level bubble, a lifting rod, a lifting knob, a carrying plate, a rotating bracket and a laser emitter. The base is provided with a level bubble; the lower end of the lifting rod is vertically fixed on the base, and the upper end of the lifting rod is vertically fixed on the carrying plate; the height of the lifting rod can be adjusted through a lifting knob; the rotating bracket is arranged on the carrying plate; the laser transmitter is assembled on the rotating bracket, and can fan-shaped swing in a certain angle along with the rotating bracket in the horizontal direction. The sample can be rapidly aligned by the parallel laser emitted by the laser, and the utility model has the beneficial effects that: simple structure, convenient operation has promoted alignment precision and efficiency when the centre gripping slice sample, is applicable to not unidimensional slice sample and multiple model testing machine.

Description

Laser alignment device for clamping sheet-shaped sample of fatigue testing machine

Technical Field

The utility model relates to the field of alloy fatigue performance test detection, in particular to a laser alignment device for clamping a sheet-shaped sample by a fatigue testing machine.

Background

At present, when the fatigue testing machine clamps a sheet sample, the fatigue testing machine clamps and fixes the sheet sample by means of an upper pair of clamps and a lower pair of clamps. According to the requirements of GB/T3075-2021, the size of a sheet sample is uncertain in the face of complex actual sampling conditions, and the positioning of a tool for independently manufacturing samples with different sizes is not feasible, so that the vertical state of the sample during clamping still mainly depends on manual visual inspection.

Different fatigue testing machine work platforms have the difference, and the existing laser device in the market is difficult to be directly used for alignment and positioning of the clamping sheet-shaped sample of the fatigue testing machine due to the limitation of the size, the laser emission height and the like.

Whether high cycle fatigue or low cycle fatigue, the requirement on the verticality of the test sample is extremely high, the calibration and alignment by a purely manual visual method consume a great deal of time, and the alignment accuracy is difficult to evaluate.

Disclosure of utility model

In order to solve the problems, the utility model aims to provide a laser alignment device for clamping a sheet-shaped sample of a fatigue testing machine, which can be used for rapidly clamping the sheet-shaped sample and ensuring the verticality.

According to the present utility model, there is provided a laser alignment device for clamping a sheet-like specimen in a fatigue testing machine, comprising: the laser device comprises a base, a carrying plate, a lifting mechanism for lifting the carrying plate in a mode of keeping the carrying plate and the base in a parallel state, a rotating support arranged on the carrying plate, and a laser transmitter assembled on the rotating support in a mode of swinging along with the rotating support, wherein the laser transmitter can emit at least one laser or more than two parallel lasers.

Preferably, the base has a vial mounted thereon.

Preferably, the lifting mechanism comprises: the lower end is vertically fixed on the base and the upper end is vertically fixed on the lifting rod of the carrying plate, and the lifting rod is of at least two-section telescopic structure with the height adjusted through the lifting knob.

Preferably, the lifting mechanism is a motor driven lead screw nut type lifting mechanism.

Compared with the prior art, the utility model has the beneficial effects that: the laser alignment device for clamping the sheet-shaped sample of the fatigue testing machine is positioned through the base, the lifting rod and the carrying plate, and the sample is rapidly aligned through parallel laser emitted by the laser, and the device has the advantages of simple structure, convenience in operation and wide applicability, and greatly improves the accuracy and efficiency of sample alignment.

Drawings

FIG. 1 is a schematic view of a laser alignment apparatus for holding a sheet-like specimen for a fatigue testing machine according to the present utility model;

Fig. 2 (a) and (B) schematically show a front view and a left view, respectively, of an aligned state of clamping a sheet-like sample;

In the figure: 1-base, 2-bubble level, 3-lifter, 4-lifting knob, 5-loading board, 6-rotating bracket, 7-laser emitter, 8-upper clamp, 9-lower clamp, 10-slice sample, 11-parallel laser.

Detailed Description

Exemplary embodiments of the present utility model are described in detail below with reference to the attached drawings. The exemplary embodiments described below and illustrated in the drawings are intended to teach the principles of the present utility model to enable one skilled in the art to make and use the present utility model in a number of different environments and for a number of different applications. The scope of the utility model is therefore defined by the appended claims, and the exemplary embodiments are not intended, and should not be considered, as limiting the scope of the utility model. Moreover, for ease of description, where like elements are designated by like or similar reference numerals throughout the several views, the dimensions of the various parts shown are not necessarily drawn to scale, and references to orientation, such as longitudinal direction of the body, and orientation or positional relationship indicated above, below, left, right, top, bottom, etc., are all based on the orientation or positional relationship shown in the drawings, merely for ease of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the utility model. The following description of the embodiments emphasizes the differences between the embodiments, and the same or similar features may be referred to each other, so that technical features in the different embodiments may be freely combined to form further embodiments according to design needs for brevity and not described in detail.

As shown in fig. 1, the utility model discloses a laser alignment device for clamping a sheet sample of a fatigue testing machine, which comprises a base 1, a level bubble 2, a lifting rod 3, a lifting knob 4, a carrying plate 5, a rotating bracket 6 and a laser emitter 7.

The base 1 is placed on a platform of the fatigue testing machine, the base 1 is provided with the level bubble 2, and the base 1 and the platform of the testing machine are ensured to be in the same horizontal state through the level bubble 2.

The lower end of the lifting rod 3 is vertically fixed on the base 1, the upper end of the lifting rod 3 is vertically fixed on the carrying plate 5, and the base 1 and the carrying plate 5 are in a parallel state. The lifting rod 3 can be arranged into a two-section telescopic structure as shown in the figure, and the height of the lifting rod can be adjusted through the lifting knob 4.

The rotary bracket 6 is arranged on the carrying plate 5; the laser transmitter 7 is arranged on the rotary support 6 and used for transmitting at least one laser or more than two parallel lasers 11, and the transmitted laser projection is perpendicular to the base and the tester platform. The laser transmitter 7 is accompanied by a rotating support 6, which can oscillate in a sector within a certain angle in the horizontal direction.

As shown in fig. 2, during use, the sheet-like sample 10 is first pre-clamped by the lower clamp 8, and the height of the laser emitter 7 is adjusted to match the height of the center 10 of the sheet-like sample by adjusting the height of the lifting rod 3; then the laser emitter 7 is turned on, the angle of the rotary support 6 is adjusted, the sheet-shaped sample 10 is continuously adjusted, the projection of parallel laser 11 with preset intervals, for example, emitted by the laser emitter 7 can be overlapped with the two sides of the sheet-shaped sample 10, so that the sheet-shaped sample 10 is aligned to ensure the vertical state, the sample is clamped by the upper clamp 9, and finally the alignment laser device is turned off to perform fatigue test.

Specifically, when the alignment operation is performed by replacing samples of different sizes, the sheet-like sample 10 is also pre-clamped, and the height of the laser emitter 7 is matched with the central height of the sheet-like sample 10 by adjusting the height of the lifting rod 3; by adjusting the rotary holder 6 and the sheet-like sample 10, the projection of the emitted parallel laser light 11 can be overlapped with both sides of the sheet-like sample 10, thereby aligning the sample to ensure the vertical state of the sheet-like sample 10.

Although an example of the lifting mechanism is described above with the lifting lever 3 and the lifting knob 4, the present invention is not limited to this, and a screw-nut type lifting mechanism driven by a motor may be used, for example, as long as the loading plate 5 can be lifted and held at a predetermined position so as to keep the loading plate 5 in a parallel state with the base 1.

While the above description has been made by way of example in which the projections of the parallel laser beams 11 at predetermined intervals overlap both sides of the sheet-like sample 10, the present utility model is not limited to this, and for samples of different sizes, it is also possible to align or overlap one side of the sheet-like sample 10 by emitting only one laser beam, or to align or overlap one side of the sheet-like sample 10 with one of the two parallel laser beams, and then rotate the rotary holder 6 to align or overlap the other side of the sheet-like sample 10 with the other side of the two parallel laser beams, or to further align or overlap the middle one laser beam with the graduation line or other vertical line in the middle of the sheet-like sample 10 when three parallel laser beams are used. Finally, it should be understood that the foregoing description is merely illustrative of the preferred embodiments of the present utility model, and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or changes may be made thereto.

Claims (4)

1. A laser alignment device for fatigue testing machine centre gripping slice sample, characterized in that includes: the laser device comprises a base (1), a carrying plate (5), a lifting mechanism for lifting the carrying plate (5) in a mode of keeping the carrying plate (5) and the base (1) in a parallel state, a rotating bracket (6) mounted on the carrying plate (5) and a laser transmitter (7) assembled on the rotating bracket (6) in a mode of swinging along with the rotating bracket (6), wherein the laser transmitter (7) can emit at least one laser or more than two parallel lasers.

2. The laser alignment device for clamping a sheet-like specimen in a fatigue testing machine according to claim 1, wherein a level bubble (2) is mounted on the base (1).

3. The laser alignment device for clamping a sheet-like specimen for a fatigue testing machine according to claim 1, wherein the elevating mechanism includes: the lower end is vertically fixed on the base (1) and the upper end is vertically fixed on the lifting rod (3) of the carrying plate (5), and the lifting rod (3) is of at least two-section telescopic structure with the height adjusted by the lifting knob (4).

4. The laser alignment device for clamping a sheet specimen in a fatigue testing machine according to claim 1, wherein the lifting mechanism is a motor-driven screw-nut type lifting mechanism.