CN203348846U - Multi-directional adjustable supporting device for internal loss measurement on low-frequency mechanics spectrometer - Google Patents

Abstract

The utility model discloses a multi-directional adjustable supporting device for internal loss measurement on a low-frequency mechanics spectrometer. The multi-directional adjustable supporting device comprises a perpendicular vertical pipe and a horizontally-arranged panel, and the panel is provided with an adjustable supporting mechanism. The adjustable supporting mechanism comprises a height adjusting rod and a horizontal adjusting rod, the tail end of the height adjusting rod is perpendicularly fixed to the panel, the horizontal adjusting rod is perpendicularly arranged at the upper end of the height adjusting rod, an outer end of the height adjusting rod extends into the vertical pipe in a manner that a vertical swing rod is hung by a cotton thread, the outer end of the height adjusting rod is balanced through a balancing weight hung at the other end of the cotton thread, and a sample is hung by the lower end of the vertical swing rod. With the method, positions of two supporting points supporting the cotton thread in the length direction perpendicular to a cross beam are adjustable, positions of two fulcrums supporting the cotton thread in the length direction along the cross beam are adjustable; the positions of the two fulcrums supporting the cotton thread in the height direction are adjustable.

Description

A multi-directional adjustable support device for measuring internal friction on a low-frequency mechanical spectrometer

technical field

The utility model relates to the mechanical field, in particular to a multidirectional adjustable support device for measuring internal friction on a low-frequency mechanical spectrometer.

Background technique

The measurement of low-frequency internal friction is done on a low-frequency mechanical spectrometer, which is to add a small stress (horizontal direction stress) of a cycle from the free end (upper end) to the vertical strip with one end fixed (lower end) and one end free. , and then measure the amplitude attenuation of the sample (free decay method) or the phase angle of the strain lagging behind the stress (forced vibration method) to measure the internal friction value, which requires that the centerlines of the fixed end (lower end) and the free end (upper end) are consistent and Vertical to the horizontal direction to ensure the accuracy of the measurement. Due to the existence of parts manufacturing errors, the consistency of the centerlines of the fixed end (lower end) and the free end (upper end) must be achieved by setting the mechanism, while the lower end is the fixed end and cannot be adjusted. Only by adjusting the support point of the upper end, while the upper end is used The cotton thread is supported on the supporting mechanism and balanced with a counterweight. Therefore, the supporting mechanism that needs to be designed can adjust the spatial position of the supporting point of the cotton thread. First adjust the connection line of the two fulcrums supporting the cotton thread to be parallel to the length direction of the beam, and then adjust the connection line to intersect (center) the center line of the fixed end (lower end) and the free end (upper end) (also the center line of the sample). In addition, in order to measure samples of different lengths, it is sometimes necessary to raise or lower the supporting point of the cotton thread, therefore, the height of the supporting mechanism also needs to be adjustable in the vertical direction.

Utility model content

The technical problem mainly solved by the utility model is to provide a multi-directional adjustable support device for measuring internal consumption on a low-frequency mechanical spectrometer, which can make the two support points of the supporting cotton thread adjustable in the length direction perpendicular to the beam; the supporting cotton thread The positions of the two fulcrums along the length direction of the beam are adjustable; the positions of the two fulcrums supporting the cotton thread in the height direction are also adjustable.

In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a multi-directional adjustable support device for measuring internal friction on a low-frequency mechanical spectrometer, including a vertical standpipe and a horizontally arranged panel. An adjustable support mechanism is provided, the adjustable support mechanism includes a height adjustment rod and a horizontal adjustment rod, the end of the height adjustment rod is vertically fixed to the panel, the horizontal adjustment rod is vertically arranged The outer end extends into the vertical pipe through the cotton thread hanging the vertical pendulum rod, and is balanced by the counterweight hanging from the other end of the cotton thread, and the lower end of the vertical pendulum rod hangs the sample.

Preferably, the height adjustment rod includes an upper support rod and a lower support rod, the lower support rod is fixedly connected to the panel through the fixed lower support base, and the lower support rod and the fixed lower support base are fixed by a third locking screw, so The upper end surface of the lower support rod is provided with a counterbore, the lower end of the upper support rod is cylindrical, the lower end of the upper support rod is inserted into the counterbore at the upper end of the lower support rod, and fixed by the second fastening screw, the upper support rod The upper end is provided with a rectangular groove.

Preferably, the horizontal adjustment rod includes a moving beam and a cotton thread support, the cross-section of the moving beam is rectangular, one end of the moving beam is inserted into the rectangular groove of the upper supporting rod, and the moving beam and the upper supporting rod are arranged on the upper supporting rod The first fastening screw on the end face is fixed, cotton thread is wound on the cotton thread support, and the two ends of the cotton thread are respectively connected to the counterweight and the vertical swing bar.

Preferably, the cotton thread support includes a cotton thread support shaft fixed to the moving crossbeam, the cotton thread support shaft is fixed to the moving crossbeam through the second lock nut and the third lock nut, the front end of the cotton thread support shaft is equipped with a slotted rolling bearing, and the slotted The rolling bearing is fixed by the second locking nut, and an adjusting nut is installed at the front end of the cotton thread support shaft, and the adjusting nut is arranged at the front end of the second locking nut.

Preferably, two cotton thread supports are provided on the moving beam.

The beneficial effects of the utility model are: the utility model is a multi-directional adjustable support device for measuring internal friction on a low-frequency mechanical spectrometer, which can realize that the fulcrum position of the supporting cotton thread can be adjusted along the length direction of the beam, its vertical direction and the height direction. Adjust to ensure that the position of the vertical pendulum is upright, the height is appropriate, the position of the sample is correct, and the measurement requirements are met.

Description of drawings

Fig. 1 is a structural schematic diagram of a multidirectional adjustable support device used for measuring internal friction on a low-frequency mechanical spectrometer of the present invention;

Fig. 2 is a schematic structural view of the adjustable support mechanism of the present invention;

Fig. 3 is a schematic structural view of the cotton thread support of the present invention.

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, so that the protection scope of the utility model can be defined more clearly .

Please refer to Fig. 1 to Fig. 3, the utility model embodiment comprises:

A multi-directional adjustable support device for measuring internal friction on a low-frequency mechanical spectrometer, comprising a vertical standpipe and a horizontal panel 4, the panel 4 is provided with an adjustable support mechanism 1, and the adjustable support mechanism 1 Including a height adjustment rod and a horizontal adjustment rod, the end of the height adjustment rod is vertically fixed to the panel 4, the horizontal adjustment rod is vertically arranged on the upper end of the height adjustment rod, the height adjustment rod includes an upper support rod 14 and a lower support rod 16, the The lower support rod 16 is fixedly connected with the panel 4 through the fixed lower support base 17, and the lower support rod 16 and the fixed lower support base 17 are fixed by the third locking screw 110. The upper end surface of the lower support rod 16 is provided with a counterbore, and The lower end of support rod 14 is cylindrical, and the lower end of upper support rod 14 is inserted in the counterbore of lower support rod 16 upper end, and is fixed by the second fastening screw 15, and the upper end of upper support rod 14 is provided with rectangular groove. The horizontal adjustment rod comprises a moving crossbeam 12 and two cotton thread supports 11. The cross section of the moving crossbeam 12 is rectangular. The first fastening screw 13 on the upper end surface of the support rod 14 is fixed, and the cotton thread 3 is wound on the cotton thread support 11, and the two ends of the cotton thread 3 are connected with the counterweight 2 and the vertical swing bar 5 respectively. Cotton thread support 11 comprises the cotton thread supporting shaft fixed with moving crossbeam 12, and cotton thread supporting shaft is fixed with moving crossbeam 12 by second locking nut 114 and the 3rd locking nut 115, and slotted rolling bearing 113 is installed on the front end of cotton thread supporting shaft, slotting The rolling bearing 113 is fixed by the second locking nut 112 , and an adjusting nut 111 is installed at the front end of the cotton thread support shaft, and the adjusting nut 111 is arranged at the front end of the second locking nut 112 . Cotton thread support 11 stretches into the standpipe by hanging vertical pendulum bar 5 through cotton thread 3 , and is balanced by counterweight 2 at the other end of cotton thread 3 , and sample 6 is hung at the lower end of vertical pendulum bar 5 .

The working process of the present utility model is as follows:

1. Adjust the moving beam

The weight of the sample 6 and the vertical pendulum bar 5 is supported by the cotton thread 3 through the cotton thread support 11, and is balanced with a counterweight. When measuring, the vertical pendulum bar and the sample are not subjected to force or as little force as possible in the vertical direction, and the cotton thread support point on the right needs to be in line with the vertical The pendulum 5 and the sample 6 form a vertical line to ensure that the sample is not affected by other forces. When adjustment is needed, the first fastening screw 13 is loosened, and then the crossbeam 12 is moved laterally to adjust the position of the supporting point of the cotton thread support 11 along the length direction of the crossbeam.

2. Adjust the movable upper support rod

When it is necessary to adjust the position of the cotton thread support point perpendicular to the length direction of the crossbeam, the second fastening screw 15 can be loosened, and then the upper support rod 14 can be rotated to adjust the position of the cotton thread support point 11 perpendicular to the lengthwise direction of the crossbeam; When adjusting the height of cotton thread support 11 support points, the upper support rod 14 can be rotated to make it rise or fall, so as to achieve the purpose of height adjustment.

3. Adjust the line between the two support points of the cotton thread support 11 to be parallel to the length direction of the beam

When the connecting line of the two supporting points of the cotton thread support 11 is not parallel to the crossbeam length direction, it can be adjusted by the following method, loosen the second locking nut 114 and the third locking nut 115 in any cotton thread supporting 11, and then Rotate the adjusting screw 111, and after the adjustment, tighten the second locking nut 114 and the third locking nut 115 to get final product.

The beneficial effects of the multidirectional adjustable support device used for measuring internal friction on a low-frequency mechanical spectrometer of the utility model are as follows:

①A multi-directional adjustable support mechanism suitable for measuring internal friction on a low-frequency mechanical spectrometer. It has an exquisite design, simple structure, and low manufacturing cost; ②The supporting point of the cotton thread support 11 can be easily adjusted along the The position in the longitudinal direction of the crossbeam; ③ by rotating the movable upper support rod, the position of the support point of the cotton thread support 11 perpendicular to the longitudinal direction of the crossbeam can be easily adjusted; ④ by rotating the upper support rod 14, the upper support rod 14 is turned upward or downward The position in the height direction of the support point of the cotton thread support 11 can be adjusted; ⑤ Loosen the second lock nut 114 and the third lock nut 115 in any cotton thread support 11, then turn the adjusting screw 111, and then tighten the second lock nut The nut 114 and the third locking nut 115 can adjust the connection line of the two support points of the cotton thread support 11 to be parallel to the length direction of the beam.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (5)

1. measure the interior multidirectional adjustable support consumed on a low frequency mechanics spectrometer, comprise vertical vertical tube and horizontally disposed panel, it is characterized in that: described panel is provided with adjustable supporting mechanism, described adjustable supporting mechanism comprises height regulating rod and levelling lever, the end of described height regulating rod is vertical with panel fixing, levelling lever is vertically installed in the upper end of height regulating rod, the external end head of levelling lever stretches in vertical tube by the cotton thread vertical pendulum bar that plays, and the balancing weight balance of playing by the cotton thread the other end, the vertical pendulum bar lower end sample that plays.

2. the multidirectional adjustable support consumed in measuring on a kind of low frequency mechanics spectrometer according to claim 1, it is characterized in that: described height regulating rod comprises upper support bar and lower support bar, described lower support bar is fixedly connected with panel by fixing lower support seat, lower support bar and fixedly the lower support seat by the 3rd lock screw, fix, the upper-end surface of described lower support bar is provided with counterbore, the lower end of upper support bar is cylinder type, the lower end of upper support bar is inserted in the counterbore of lower support bar upper end, and mark closely screw by second and fix, the upper end of upper support bar is provided with rectangle groove.

3. the multidirectional adjustable support consumed in measuring on a kind of low frequency mechanics spectrometer according to claim 1, it is characterized in that: described levelling lever comprises moving beam and cotton thread supporting, described moving beam cross section is rectangular, moving beam one end inserts in the rectangle groove of upper support bar, and moving beam and upper support bar are marked closely screw and are fixed by being arranged on first of upper support bar upper-end surface, be wound with cotton thread in described cotton thread supporting, the two ends of cotton thread connect respectively balancing weight and vertical pendulum bar.

4. the multidirectional adjustable support consumed in measuring on a kind of low frequency mechanics spectrometer according to claim 3, it is characterized in that: described cotton thread supporting comprises the cotton thread fulcrum fixing with moving beam, the cotton thread fulcrum is fixed by the second locking nut and the 3rd locking nut and moving beam, cotton thread fulcrum front end is equipped with the fluting rolling bearing, the fluting rolling bearing is fixed by the second locking nut, described cotton thread fulcrum front end also is equipped with adjusting nut, and adjusting nut is arranged at the second locking nut front end.

5. the multidirectional adjustable support consumed in measuring on a kind of low frequency mechanics spectrometer according to claim 3 is characterized in that: described moving beam is provided with two cotton thread supportings.

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