Speed measurement support of centrifugal machine

Abstract

The utility model discloses a speed measuring support of a centrifugal machine, which comprises a main support body, a plurality of universal adjusting cantilevers, a plurality of microphone clamps and a plurality of tachometer clamps, comprising at least three angle plates, a plurality of movable rods connected with the adjacent angle plates and a plurality of lifting columns fixedly connected to the bottoms of the angle plates in a one-to-one correspondence mode. The universal adjusting cantilever comprises a cantilever mounting piece detachably connected to the main frame body, a first arm rod, a second arm rod and three damping universal joints; the cantilever mounting piece is connected with the first arm rod through one damping universal joint; the first arm rod is connected with the second arm rod through one damping universal joint; and the second arm rod is connected with the microphone clamp or the tachometer clamp through one damping universal joint. The whole structure is high in stability and high in flexibility, the set angle and position of the microphone sensor and / or the tachometer can be adjusted according to the test requirement, the accuracy of the rotating speed test result is improved, the test requirements of more centrifuges of different specifications can be met, and the universality is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of support, specifically, it is about a centrifuge speed measuring support. BACKGROUND

[0002] In the research and development, production and detection of centrifuges, the accuracy and convenience of speed measurement are crucial. Early testing methods often rely on a single measurement principle, such as using only mechanical contact speed measurement, which requires the measurement probe to make precise physical contact with the centrifuge shaft. This method is not only complex to operate, but also easily wears out the shaft, affecting the working accuracy and service life of the centrifuge.

[0003] With the development of technology, new methods such as acoustic speed measurement and flash speed measurement have emerged. However, existing speed test supports are mostly single-function, cannot simultaneously adapt to different test equipment (microphone sensors, tachometers), and cannot meet the demand for measuring centrifuge speed with different methods, resulting in technicians needing to prepare multiple sets of supports compatible with test equipment for different measurement methods. This not only increases testing costs and equipment footprint, but also makes the testing process cumbersome, prolongs the testing period, and reduces work efficiency.

[0004] In addition, due to the large differences in the size and shape of centrifuges of different models and purposes, existing speed test supports have poor compatibility and cannot be flexibly adjusted. When testing different centrifuges, the support needs to be frequently replaced or modified, which not only wastes time and effort, but also increases the complexity and uncertainty of the testing process, reducing the accuracy and reliability of the test results. SUMMARY

[0005] The utility model is to solve the above-mentioned problems, and aims to provide a centrifuge speed measuring support.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A centrifuge speed measuring support, comprising a main frame, a plurality of universal adjustment cantilevers, a plurality of microphone clamps, and a plurality of tachometer clamps, wherein:

[0008] The main frame is used to support the centrifuge, and the main frame comprises at least three angle plates, a plurality of movable rods connecting adjacent angle plates, and a plurality of lifting columns fixedly connected one-to-one at the bottom of the angle plates;

[0009] The universal adjustment cantilever comprises a cantilever mounting piece detachably connected to the main frame, a first arm rod, a second arm rod, and three damping universal joints. The cantilever mounting piece and the first arm rod, the first arm rod and the second arm rod, and the second arm rod and the microphone clamp or the tachometer clamp are connected by a damping universal joint respectively.

[0010] Further, the tachometer clamp comprises a mounting seat and at least one compression spring, the mounting seat is connected with the universal adjusting cantilever through a damping universal joint, and a mounting groove matched with the tachometer is formed in the mounting seat; the compression spring is a strip-shaped metal sheet, a through hole is formed in one end of the compression spring, and the compression spring is fastened to the mounting seat through a mounting bolt matched with the through hole; the other end of the compression spring is a free end, and has a curvature protruding towards the mounting groove, and is used for pressing the tachometer in the mounting groove.

[0011] Preferably, the through hole in the compression spring is a strip-shaped hole.

[0012] Preferably, the material of the compression spring is spring steel.

[0013] Preferably, the angle plates are isosceles right-angled triangles, and the number of the angle plates is four; the four angle plates and the movable rods surround a square frame; and the lifting columns are fixed at the right angles of the angle plates and are used for adjusting the height of the square frame.

[0014] Further, a connecting hole matched with the movable rod is formed in each angle plate along two right-angle directions, an adjusting bolt is installed on one of the connecting holes of the angle plate in the radial direction; the two ends of the movable rod are respectively inserted into the connecting holes in the adjacent two angle plates, one end of the movable rod is fixedly connected with one adjacent angle plate, and the other end is inserted into the other adjacent angle plate and is locked and fixed by abutting against the side surface of the other adjacent angle plate through the adjusting bolt.

[0015] Further, a recess is formed at the oblique side of the angle plate.

[0016] Preferably, the angle plates are made of aluminum alloy plates, and the surfaces of the angle plates are provided with anti-skid lines or anti-skid cushion layers.

[0017] Preferably, the first arm rod and the second arm rod are made of aluminum alloy.

[0018] Further, the cantilever mounting piece is a crab clamp structure, the damping universal joint is a pea clamp structure, and the microphone clamp is also a crab clamp structure.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1、The centrifuge speed measuring support can simultaneously perform sound wave speed measurement and flash type speed measurement, compared with the prior support structure which can only perform single measurement mode, can satisfy more test requirements, improves the comprehensiveness and accuracy of the test, and reduces the error caused by the limitation of the measurement mode.

[0021] 2. The centrifuge speed measuring support of the utility model, the length, width and height of the main frame body can be adjusted, can adapt to centrifuges of different appearance sizes, avoids the cumbersome operation of frequent replacement or transformation of test support for different centrifuges, greatly improves the test efficiency, reduces the test cost, and effectively solves the poor universality problem of the existing support.

[0022] 3. The centrifuge speed measuring support of the utility model, the universal adjusting cantilever can realize multi-degree-of-freedom attitude adjustment, so that the operator can flexibly adjust the position and angle of the microphone sensor and / or the tachometer according to the specific situation of the centrifuge, improving the precision and reliability of sound wave speed measurement. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the structural schematic view of the centrifuge speed measuring support;

[0024] Figure 2 is the structural schematic view of the main frame body;

[0025] Figure 3 is the structural schematic view of the universal adjusting cantilever and the microphone clamp;

[0026] Figure 4 is the structural schematic view of the universal adjusting cantilever and the tachometer clamp;

[0027] Figure 5 is the structural schematic view of the tachometer clamp.

[0028] REFERENCE NUMERALS:

[0029] 1-microphone sensor;

[0030] 10-main frame body, 11-angle plate, 111-give way recess, 112-connection hole, 113-adjusting bolt, 12-movable rod, 13-lifting column, 20-universal adjusting cantilever, 21-cantilever mounting piece, 22-first arm rod, 23-second arm rod, 24-damping universal joint, 30-microphone clamp, 40-tachometer clamp, 41-mounting seat, 411-mounting groove, 42-spring, 421-through hole, 422-mounting bolt. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the following embodiments will be specifically described in combination with the drawings.

[0032] Embodiment 1

[0033] As Figure 1As shown, the embodiment provides a centrifuge speed measuring support, which comprises a main support body 10, a plurality of universal adjusting cantilevers 20, a plurality of microphone clamps 30 and a plurality of tachometer clamps 40. The main support body 10 is used for supporting a centrifuge, such as Figure 2 As shown, the main support body 10 comprises at least three corner plates 11, a plurality of movable rods 12 connecting adjacent corner plates 11 and a plurality of lifting columns 13 fixedly connected to the bottom of the corner plates 11 one by one. As shown in Figure 1 、 3 , 4, the universal adjusting cantilever 20 comprises a cantilever mounting piece 21 detachably connected to the main support body 10, a first arm rod 22, a second arm rod 23 and three damping universal joints 24. The cantilever mounting piece 21 and the first arm rod 22, the first arm rod 22 and the second arm rod 23, and the second arm rod 23 and the microphone clamp 30 or the tachometer clamp 40 are connected through a damping universal joint 24 respectively.

[0034] Specifically, as shown in Figure 2As shown, the angle plate 11 is an isosceles right triangle made of aluminum alloy sheet, with the advantages of light weight and corrosion resistance. The surface of the angle plate 11 is treated with anti-slip (e.g. provided with anti-slip lines, anti-slip pads, etc.), increasing the friction between the centrifuge bottom and avoiding displacement of the centrifuge during testing. In this embodiment, the number of angle plates 11 is 4, and the number of movable rods 12 and lifting columns 13 is also 4. The four angle plates 11 and movable rods 12 form a square frame. Each angle plate 11 has a notch 111 at the hypotenuse; each angle plate 11 has a connecting hole 112 along two perpendicular edges, and an adjusting bolt 113 is installed radially in one of the connecting holes 112 of the angle plate 11. The movable rod 12 is inserted into the connecting holes 112 of two adjacent angle plates 11. In this embodiment, one end of the movable rod 12 is fixedly connected to an adjacent angle plate 11 by welding or the like, and the other end is inserted into another adjacent angle plate 11 and locked by the adjusting bolt 113. In actual application, both ends of the movable rod 12 inserted into the connecting holes 112 can also be locked by adjusting bolts 113 to further increase the adjustment range. During speed testing, the square frame formed by the angle plates 11 and movable rods 12 can be adjusted to the appropriate length and width by changing the depth of the movable rod 12 inserted into the connecting hole 112 according to the size of the centrifuge to be tested, ensuring that the centrifuge can be stably placed on the main frame 10, providing a solid foundation for subsequent accurate testing. The lifting column 13 is fixed at the right angle of the angle plate 11 and is used to adjust the height of the square frame, which can adopt the existing telescopic rod structure. In this embodiment, the lifting column 13 includes a telescopic inner rod and an outer sleeve, made of high-strength alloy steel, with good rigidity and stability, capable of bearing the weight of the centrifuge and testing equipment. The locking between the inner rod and the outer sleeve can be realized by conventional structure, for example: a threaded hole is provided on the outer sleeve for installing a bolt, and the end of the bolt inside the outer sleeve is locked against the telescopic inner rod from the side; or a plurality of pin holes are provided on the telescopic inner rod, and a positioning hole is provided on the outer sleeve, and the telescopic inner rod is locked by a pin after being adjusted to the appropriate height. During speed testing, the length of the lifting column 13 can be adjusted according to the height of the centrifuge to be tested to make the main frame 10 reach the appropriate height. For example, for small desktop centrifuges, the height of the main frame 10 can be lowered and the length and width can be reduced; for large industrial centrifuges, the height of the main frame 10 can be increased and the length and width can be increased to meet the testing needs in different scenarios.

[0035] Further, as Figure 3 、 4As shown, in the universal adjusting cantilever 20 of the embodiment, the cantilever mounting 21 adopts the existing "crab clamp" (common trade name), and the damping universal joint 24 adopts the existing "pea clamp" (common trade name), to ensure firm connection and flexible rotation between the components, and also facilitate disassembly and replacement. The first arm rod 22 and the second arm rod 23 can be made of high-strength and ductile engineering plastic or light metal material, and in the embodiment, aluminum alloy material is adopted, which has the advantages of light weight and high rigidity. The three damping universal joints 24 enable the universal adjusting cantilever 20 to change the attitude in multiple degrees of freedom in three-dimensional space. For example, in the horizontal direction, left-right translation and rotation adjustment can be achieved, to ensure that the microphone sensor 1 can be aligned with different sound emitting parts of the centrifuge; in the vertical direction, both the height can be changed by moving up and down, and the pitch angle can be adjusted, to adapt to the sound wave receiving requirements of different heights and angles.

[0036] Further, the microphone clamp 30 in the embodiment also adopts the crab clamp structure.

[0037] Further, as shown in Figure 4 、 5 , the tachometer clamp 40 includes a mounting seat 41 and at least one compression spring 42. The mounting seat 41 is connected with the universal adjusting cantilever 20 through the damping universal joint 24, and a mounting groove 411 adapted to the tachometer is formed on the front surface of the mounting seat 41 for placing the tachometer. The back surface of the mounting seat 41 (i.e. the surface opposite to the mounting groove 411) is connected with one ball head of the damping universal joint 24. The compression spring 42 is a strip-shaped metal sheet, and in the embodiment, the compression spring 42 is made of high-quality spring steel and is processed through a heat treatment process, which has good elasticity and durability. A through hole 421 is formed at one end of the compression spring 42, and the compression spring 42 is fastened and connected to the mounting seat 41 through a mounting bolt 422 adapted to the through hole 421; the other end of the compression spring 42 is a free end, which has a curvature protruding towards the mounting groove 411, and can press the tachometer in the mounting groove 411, to prevent the tachometer from deviating due to vibration or other external interference caused by the operation of the centrifuge during the test, and to ensure the stability and accuracy of the measurement. Preferably, the through hole 421 on the compression spring 42 is a strip-shaped hole, which facilitates the adjustment of the installation position of the compression spring 42 according to the use needs, for example, the free end of the compression spring 42 presses the test button of the tachometer, and when performing long-time test operation, the operator only needs to start the test without continuously pressing the button manually, which greatly liberates the hands, enables the operator to focus more on monitoring the tachometer data and the overall operation state of the centrifuge, improves the test efficiency, reduces the labor degree of the operator, and reduces the possibility of human consumption and operation errors, which is helpful to realize the accurate measurement of the centrifuge speed.

[0038] When the rotating speed test experiment is performed, first, the movable rod 12 and the lifting column 13 of the main frame body 10 are adjusted according to the shape size of the centrifuge, the length, width and height of the main frame body 10 are adjusted to appropriate sizes, so that the centrifuge can be stably placed on the main frame body 10. Then, a plurality of universal adjusting cantilevers 20 are installed on the square frame of the main frame body 10 through cantilever mounting pieces 21. The microphone clamp 30 or the rotating speed meter clamp 40 can be connected to each universal adjusting cantilever 20 according to the test requirement, and a plurality of universal adjusting cantilevers 20 can be connected with different clamps respectively. When the sound wave rotating speed measurement is performed, the arrangement position and angle of the microphone sensor 1 are manually adjusted by using the universal adjusting cantilever 20 and the microphone clamp 30 according to the operation characteristics of the centrifuge and the field environment, so that the microphone sensor 1 can receive clear and stable sound wave signals. When the flash type rotating speed meter measurement is performed, the flash type rotating speed meter is installed on the universal adjusting cantilever 20 through the rotating speed meter clamp 40, the rotating speed meter is fixed by the compression spring 42, and the position and angle of the rotating speed meter are adjusted by using the universal adjusting cantilever 20, so that the rotating speed meter can detect the rotating speed of the centrifuge and facilitate the reading of the operator.

[0039] In summary, the centrifuge speed measuring support structure of the embodiment has high stability and flexibility, the setting angle and position of the microphone sensor and / or the rotating speed meter can be accurately adjusted according to the test requirement, the accuracy of the rotating speed test result is effectively improved, the adjustment range of each part is wide, the test requirement of more centrifuges with different specifications can be met, and the universality is high.

[0040] The above embodiment is a preferred case of the utility model, and does not limit the protection scope of the utility model.

Claims

1. A tachometer stand for a centrifuge, characterized in that The centrifuge speed measuring support comprises a main frame (10), a plurality of universal adjusting cantilevers (20), a plurality of microphone clamps (30) and a plurality of tachometer clamps (40), wherein: The main frame (10) is used for supporting a centrifuge, and the main frame (10) comprises at least three angle plates (11), a plurality of movable rods (12) connecting adjacent angle plates (11) and a plurality of lifting columns (13) fixedly connected to the bottom of the angle plates (11) one by one; The universal adjusting cantilever (20) comprises a cantilever mounting piece (21) detachably connected to the main frame (10), a first arm rod (22), a second arm rod (23) and three damping universal joints (24), and the cantilever mounting piece (21) and the first arm rod (22), the first arm rod (22) and the second arm rod (23) and the second arm rod (23) and the microphone clamp (30) or the tachometer clamp (40) are connected through a damping universal joint (24) respectively.

2. The centrifuge speed measuring support according to claim 1, wherein: The tachometer clamp (40) comprises a mounting seat (41) and at least one compression spring (42), the mounting seat (41) is connected to the universal adjusting cantilever (20) through the damping universal joint (24), and a mounting groove (411) matched with the tachometer is formed in the mounting seat (41); the compression spring (42) is a strip-shaped metal sheet, a through hole (421) is formed in one end of the compression spring (42), and the compression spring (42) is fastened to the mounting seat (41) through a mounting bolt (422) matched with the through hole (421); the other end of the compression spring (42) is a free end, and has an arc protruding towards the mounting groove (411) and used for pressing the tachometer in the mounting groove (411).

3. The centrifuge speed measuring support according to claim 2, wherein: The through hole (421) on the compression spring (42) is a strip-shaped hole.

4. The centrifuge speed measuring support according to claim 2, wherein: The material of the compression spring (42) is spring steel.

5. The centrifuge speed measuring support according to claim 1, wherein: The angle plates (11) are isosceles right triangles, and the number of the angle plates (11) is four; The four angle plates (11) and the movable rods (12) enclose a square frame; The lifting columns (13) are fixed at the right angles of the angle plates (11) and used for adjusting the height of the square frame.

6. The centrifuge speed measuring support according to claim 5, wherein: A connecting hole (112) matched with the movable rod (12) is formed in each angle plate (11) along two right-angle directions, and an adjusting bolt (113) is installed on one connecting hole (112) of the angle plate (11) along a radial direction; The two ends of the movable rod (12) are respectively inserted into the connecting holes (112) on two adjacent angle plates (11), one end of the movable rod (12) is fixedly connected to one adjacent angle plate (11), and the other end is inserted into the other adjacent angle plate (11) and locked and fixed by abutting against the side surface of the other adjacent angle plate (11) through the adjusting bolt (113).

7. The centrifuge speed measuring support according to claim 5, characterized in that: The angle plate (11) is provided with a clearance notch (111) at the bevel.

8. The centrifuge speed measuring support according to claim 1, characterized in that: The angle plate (11) is made of aluminum alloy plate material, and is provided with anti-skid lines or an anti-skid pad layer on the surface.

9. The centrifuge speed measuring support according to claim 1, characterized in that: The first arm rod (22) and the second arm rod (23) are both made of aluminum alloy material.

10. The centrifuge speed measuring support according to claim 1, characterized in that: The cantilever mounting piece (21) is a crab clamp structure, the damping universal joint (24) is a pea clamp structure, and the microphone clamp (30) is also a crab clamp structure.

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