Level adjusting structure based on screw rod

Abstract

The levelness adjusting structure comprises an upper plate, a lower plate and a plurality of adjusting assemblies, wherein the upper plate and the lower plate are vertically arranged at intervals; the adjusting assemblies are connected between the upper plate and the lower plate; each adjusting assembly comprises a spring seat fixed to the side, close to the upper plate, of the lower plate, a screw rotationally arranged on the side, close to the lower plate, of the upper plate, a spring cover in threaded connection with the screw, and a spring with the two ends connected to the spring seat and the spring cover correspondingly. And the compression amount of the spring is correspondingly adjusted by changing the vertical relative positions of the screw rod and the spring cover. According to the utility model, the horizontal adjustment of the upper plate and the panel in the active vibration reduction platform can be realized. The levelness adjusting structure is simple in structure, small in structural contact and high in structural rigidity in the x / y / z directions, namely the structural linearity degree is good, and active control over vibration is greatly facilitated.

Description

[Technical field]

[0001] The utility model relates to the technical field of active vibration reduction platforms, in particular to a leveling structure based on a screw rod. [Background technology]

[0002] Active vibration reduction technology is a technology used to reduce the vibration of mechanical systems. It offsets or reduces the vibration effect by applying control forces in opposite directions or coherent phases to the system. Through real-time monitoring and feedback adjustment, active vibration reduction technology can accurately compensate according to the vibration state of the system. This technology is widely used in the fields of automobiles, aerospace, construction engineering, and industrial machinery to improve the operating stability of the system, reduce vibration noise, and extend the life of the equipment. However, the transmission mechanism of the traditional active vibration reduction platform cannot take into account both the connection stiffness and the structural linearity at the same time, and there is a problem that the lateral vibration mode of the vibration reduction platform is coupled into the vertical mode, thus affecting the accuracy of active vibration reduction.

[0003] In view of this, it is necessary to provide a screw-based leveling structure to overcome the above-mentioned defects. [Contents of the utility model]

[0004] The purpose of the utility model is to provide a screw-based leveling structure, which aims to improve the transmission mechanism of a traditional active vibration reduction platform, which cannot take into account the problem of connection stiffness and structural linearity at the same time, so that it has high connection stiffness and good structural linearity, and can well solve the problem of the lateral vibration mode of the active vibration reduction platform coupling into the vertical mode.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a screw-based leveling structure, comprising an upper plate and a lower plate spaced apart from each other and a plurality of adjustment components connected between the upper plate and the lower plate;

[0006] Each of the adjustment components includes a spring seat fixed to the side of the lower plate close to the upper plate, a screw rod rotatably arranged on the side of the upper plate close to the lower plate, a spring cover threadedly connected to the screw rod, and a spring whose two ends are respectively connected to the spring seat and the spring cover; by changing the vertical relative position of the screw rod and the spring cover, the compression amount of the spring can be adjusted accordingly.

[0007] In a preferred embodiment, a panel is further provided on a side of the upper plate away from the lower plate; the panel is detachably attached to the upper plate by a first screw.

[0008] In a preferred embodiment, the upper plate is provided with a countersunk hole, and the spring cover is provided with a first threaded hole; the screw includes a screw portion and a nut portion; the screw portion passes through the countersunk hole and is threadedly connected to the first threaded hole, and the nut portion abuts against the inner wall of the countersunk hole and the bottom surface of the panel.

[0009] In a preferred embodiment, an inner angle groove is formed at one end of the nut portion away from the screw portion; an adjustment hole is formed on the panel at a position corresponding to the inner angle groove; and a cross-sectional area of ​​the nut portion is larger than a cross-sectional area of ​​the adjustment hole.

[0010] In a preferred embodiment, the spring seat is provided with a second threaded hole, and the lower plate is provided with a threaded groove coaxially arranged with the corresponding second threaded hole; the second threaded hole and the corresponding threaded groove are connected by the second screw to removably fix the spring seat to the lower plate.

[0011] In a preferred embodiment, the spring seat and the spring cover are both cylindrical.

[0012] In a preferred embodiment, a cylindrical limiting cylinder is provided on the side where the spring seat and the spring cover are close to each other; and the two ends of the spring are respectively sleeved on the two limiting cylinders.

[0013] In a preferred embodiment, the lower plate is provided with a limiting groove matched with the spring seat, and one end of the spring seat away from the spring is arranged in the limiting groove.

[0014] The utility model provides a screw-based leveling structure, the upper plate is used to configure the active vibration reduction platform and the load device. When the upper plate needs to be leveled, the screw is rotated. Since the screw is in rigid contact with the upper plate, the vertical relative position of the screw and the spring cover will be changed, so that the compression of the spring is adjusted accordingly, and the upper plate can also produce vertical movement. Multiple adjustment components work together to achieve the level adjustment of the upper plate and the panel in the active vibration reduction platform. The leveling structure has a simple structure, less structural contact, and has high structural stiffness in the three directions of x / y / z, that is, the structural linearity is good, which is of great help to the active control of vibration.

Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A three-dimensional diagram of the screw-based leveling structure provided by the utility model;

[0017] Figure 2 for Figure 1The screw-based leveling structure shown is based on a longitudinal section of an adjustment assembly;

[0018] Figure 3 for Figure 1 The figure shows the test results of the transmission rate of the screw-based leveling structure under a certain load.

[0019] Numbers in the figure: 100, screw-based leveling structure; 10, upper plate; 11, countersunk hole; 20, lower plate; 21, threaded groove; 22, limit groove; 30, adjustment assembly; 31, spring seat; 311, second threaded hole; 32, screw; 321, screw portion; 322, nut portion; 323, inner angle groove; 33, spring cover; 331, first threaded hole; 34, spring; 40, panel; 41, adjustment hole; 51, first screw; 52, second screw. [Specific implementation method]

[0020] In order to make the purpose, technical solution and beneficial technical effect of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining the utility model, and are not intended to limit the utility model.

[0021] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0022] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0023] In an embodiment of the utility model, a screw-based leveling structure 100 is provided for load bearing and height adjustment of an active vibration reduction platform. A load device is arranged above the active vibration reduction platform. Due to eccentricity of the load of the device or replacement of the load device, the height and levelness of the active vibration reduction platform may be offset. In order to optimize the active vibration reduction effect, the leveling structure needs to be used for leveling.

[0024] like Figure 1 and Figure 2 As shown, the screw-based leveling structure 100 includes an upper plate 10 and a lower plate 20 spaced apart from each other and a plurality of adjustment components 30 connected between the upper plate 10 and the lower plate 20 .

[0025] In this embodiment, the number of the adjustment components 30 can be three or four groups, which are arranged between the upper plate 10 and the lower plate 20 in an equilateral triangle or rectangle. Furthermore, a panel 40 is also provided on the side of the upper plate 10 away from the lower plate 20. The panel 40 is detachably attached to the upper plate 10 by a first screw 51. The panel 40 can be reused as a working panel of the active vibration reduction platform, or the working panel of the active vibration reduction platform can be reused as the panel 40 of the level adjustment mechanism.

[0026] Specifically, each adjustment assembly 30 includes a spring seat 31 fixed to the side of the lower plate 20 close to the upper plate 10, a screw rod 32 rotatably arranged on the side of the upper plate 10 close to the lower plate 20, a spring cover 33 threadedly connected to the screw rod 32, and a spring 34 whose two ends are respectively connected to the spring seat 31 and the spring cover 33.

[0027] Among them, the spring seat 31 and the spring cover 33 are both cylindrical, and the radii of the cross-sectional circles of the two can be set to the same size. The spring seat 31 and the corresponding spring cover 33 are arranged opposite to each other at an upper and lower interval, and are connected by a spring 34. Furthermore, a cylindrical limiting cylinder (not shown in the figure) is provided on the side where the spring seat 31 and the spring cover 33 are close to each other. The cross-sectional area of ​​the limiting cylinder is smaller than the cross-sectional area of ​​the spring seat 31 and the spring cover 33, so that the two ends of the spring 34 are respectively sleeved on the two limiting cylinders, and the spring 34 can be effectively prevented from falling off from the spring seat 31 and the spring cover 33.

[0028] In the embodiment of the utility model, the upper plate 10 is provided with a countersunk hole 11, and the spring cover 33 is provided with a first threaded hole 331. The screw rod 32 includes a screw rod portion 321 and a nut portion 322. The screw rod portion 321 passes through the countersunk hole 11 and is threadedly connected with the first threaded hole 331, and the nut portion 322 abuts against the inner wall of the countersunk hole 11 and the bottom surface of the panel 40. That is, the nut portion 322 is in rigid contact with the panel 40, the nut portion 322 is restricted in the countersunk hole 11, and the spring cover 33 is threadedly connected with the screw rod portion 321, and the relative position between the spring cover 33 and the screw rod 32 can be changed.

[0029] Therefore, when the screw rod 32 rotates relative to the spring cover 33, the spring cover 33 and the screw rod 32 move vertically. Since the nut portion 322 is in vertical rigid contact with the panel 40, the panel 40 and the upper plate 10 also move vertically relative to the lower plate 20, thereby adjusting the height and level of the active vibration reduction platform at this position. Then, the adjustment of multiple adjustment components 30 at corresponding positions is combined to finally achieve the level adjustment of the active vibration reduction platform.

[0030] Among them, an inner angle groove 323, such as an inner hexagonal groove, is provided at one end of the nut portion 322 away from the screw portion 321, so that a hexagonal wrench can be inserted into the inner hexagonal groove to realize the rotation of the nut portion 322 and the screw 32 around their own central axis. Correspondingly, the panel 40 is provided with an adjustment hole 41 at a position corresponding to the inner angle groove 323 for the hexagonal wrench to pass through. The cross-sectional area of ​​the nut portion 322 is larger than the cross-sectional area of ​​the adjustment hole 41, thereby preventing the nut portion 322 from passing through the adjustment hole 41 and out of the panel 40.

[0031] In one embodiment, the spring seat 31 is provided with a coaxially arranged second threaded hole 311. The lower plate 20 is provided with a threaded groove 21 coaxially arranged with the corresponding second threaded hole 311. The aperture of the threaded groove 21 is consistent with the aperture of the second threaded hole 311. The second threaded hole 311 and the corresponding threaded groove 21 are connected by a second screw 52 to detachably fix the spring seat 31 to the lower plate 20. In order to prevent the spring seat 31 from lateral displacement and to strengthen the reliability of fixing the spring seat 31, the lower plate 20 is provided with a limiting groove 22 adapted to the spring seat 31, and the end of the spring seat 31 away from the spring 34 is arranged in the limiting groove 22.

[0032] The implementation principle of the utility model is: by changing the vertical relative position of the screw rod 32 and the spring cover 33, the compression amount of the spring 34 is adjusted accordingly, thereby changing the height of the position, and then all the adjustment components 30 are integrated to achieve the horizontal adjustment of the upper plate 10 and the panel 40. Figure 3 As shown in the figure, the basic frame structure of the active vibration reduction platform set on the horizontal structure of the tuning, and the transmissibility test results obtained under a certain load, it can be seen that the resonance peak of the transmissibility curve is clear and the curve is smooth, which proves that it has good structural linearity.

[0033] In summary, the screw-based leveling structure 100 provided by the utility model, the upper plate 10 is used to configure the load device. When the upper plate 10 needs to be leveled, the screw 32 is rotated. Since the screw 32 is in rigid contact with the upper plate 10, the vertical relative position of the screw 32 and the spring cover 33 will be changed, so that the compression amount of the spring 34 is adjusted accordingly, and the upper plate 10 can also produce vertical movement. Multiple adjustment components 30 work together to achieve the horizontal adjustment of the upper plate 10 and the panel 40 in the active vibration reduction platform. The leveling structure has a simple structure, less structural contact, and has high structural stiffness in the three directions of x / y / z, that is, the structural linearity is good, which is of great help to the active control of vibration.

[0034] The present invention is not limited to what is described in the specification and implementation modes, and therefore, additional advantages and modifications can be easily realized by those familiar with the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrative examples shown and described herein.

Claims

1. A screw-based leveling structure, characterized in that: It includes an upper plate and a lower plate spaced apart from each other and a plurality of adjustment components connected between the upper plate and the lower plate; Each of the adjustment components includes a spring seat fixed to the side of the lower plate close to the upper plate, a screw rod rotatably arranged on the side of the upper plate close to the lower plate, a spring cover threadedly connected to the screw rod, and a spring whose two ends are respectively connected to the spring seat and the spring cover; by changing the vertical relative position of the screw rod and the spring cover, the compression amount of the spring can be adjusted accordingly.

2. The screw-based leveling structure according to claim 1, characterized in that: A panel is also provided on one side of the upper plate away from the lower plate; the panel is detachably attached and connected to the upper plate by a first screw.

3. The screw-based leveling structure according to claim 2, characterized in that: The upper plate is provided with a countersunk hole, and the spring cover is provided with a first threaded hole; the screw comprises a screw portion and a nut portion; the screw portion passes through the countersunk hole and is threadedly connected to the first threaded hole, and the nut portion abuts against the inner wall of the countersunk hole and the bottom surface of the panel.

4. The screw-based leveling structure according to claim 3, characterized in that: An inner angle groove is formed at one end of the nut portion away from the screw portion; an adjustment hole is formed at a position of the panel corresponding to the inner angle groove; and the cross-sectional area of ​​the nut portion is greater than the cross-sectional area of ​​the adjustment hole.

5. The screw-based leveling structure according to claim 1, characterized in that: The spring seat is provided with a second threaded hole, and the lower plate is provided with a threaded groove coaxially arranged with the corresponding second threaded hole; the second threaded hole and the corresponding threaded groove are connected by a second screw to detachably fix the spring seat to the lower plate.

6. The screw-based leveling structure according to claim 1, characterized in that: The spring seat and the spring cover are both cylindrical.

7. The screw-based leveling structure according to claim 6, characterized in that: A cylindrical limiting cylinder is provided on the side where the spring seat and the spring cover are close to each other; and the two ends of the spring are respectively sleeved on the two limiting cylinders.

8. The screw-based leveling structure according to claim 1, characterized in that: The lower plate is provided with a limiting groove matched with the spring seat, and one end of the spring seat away from the spring is arranged in the limiting groove.

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