A leveling foot

Abstract

The present invention discloses a leveling foot, comprising a connecting rod 1, a lining base 4 and a base 5; a first groove is provided on the top surface of the base 5, and the lining base 4 is arranged in the first groove; the connecting rod 1 includes an opposite first end and a second end, wherein the first end is used for connecting with a target device, and the second end is a hinge part; the lining base 4 is provided with a first mating surface, and the second end is hingedly mated with the lining base 4; a through hole is formed on the surface of the base 5 opposite to the top surface, and the diameter of the through hole is adapted to the hinge part for mechanically limiting the second end within a preset swing angle range. The present invention mechanically limits the second end of the connecting rod within a preset swing angle range through the through hole, thereby improving the mechanical adjustment range of the connecting rod.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and particularly to a leveling foot. Background Art

[0002] The leveling foot is used for the support and leveling of a precision platform. Generally, 3 or 4 leveling feet are used to support the bottom of the equipment, and the equipment is leveled by rotating the threads of the leveling feet to interact with the equipment. When the equipment is on a relatively inclined ground, the traditional leveling foot has a small angle adjustment range. Summary of the Invention

[0003] An embodiment of the present invention provides a leveling foot to solve the problem of small adjustment range in the prior art.

[0004] An embodiment of the present invention provides a leveling foot, including a connecting rod 1, a lining seat 4 and a base 5;

[0005] A first groove is provided on the top surface of the base 5, and the lining seat 4 is arranged in the first groove;

[0006] The connecting rod 1 includes an opposite first end and a second end, wherein the first end is used for connecting with a target device, and the second end is a hinge part;

[0007] The lining seat 4 is provided with a first mating surface, and the second end is hinged and mated with the lining seat 4;

[0008] A through hole is provided on the surface of the base 5 opposite to the top surface, and the diameter of the through hole is adapted to the hinge part for mechanically limiting the second end within a preset swing angle range.

[0009] In an example, the leveling foot further includes an adjusting plate 6 and an adjusting member 9;

[0010] The adjusting member 9 passes through the adjusting plate 6 and the through hole to be connected with the hinge part;

[0011] The surface of the base 5 opposite to the top surface is a conical surface, the adjusting plate 6 is arranged on the conical surface, and the mating surface between the adjusting plate 6 and the conical surface is an involute surface.

[0012] In an example, the leveling foot further includes an elastic member 7;

[0013] The elastic member 7 is arranged between the adjusting member 9 and the adjusting plate 6, and the elastic member 7 is used to ensure the fit between the adjusting plate 6 and the conical surface before and after adjusting the adjusting member 9.

[0014] In one example, the leveling foot further includes a washer 8 , which is disposed between the elastic member 7 and the adjusting member 9 .

[0015] In one example, the adjusting member 9 is an adjustable screw, and the hinge portion is provided with a corresponding threaded hole. The adjustable screw can be inserted into the threaded hole to achieve the fitting of the adjusting plate 6 with the circular table surface.

[0016] In one example, the leveling foot further includes an anti-skid pad 10 , and the anti-skid pad 10 is provided on the bottom surface of the base 5 ;

[0017] The bottom surface of the anti-slip pad 10 is a rough surface, and the rough surface is used to increase the friction between the anti-slip pad and the contact surface.

[0018] In one example, the hinge portion is a spherical hinge portion, and the first mating surface is a hemispherical mating surface.

[0019] In one example, the leveling foot further includes a pressure cover 2 , which is fixed on the top surface of the base 5 , and a second mating surface that is mated with the hinge portion is provided on the pressure cover 2 .

[0020] In one example, the leveling foot further includes a dust cover 3 , and a groove structure is provided on the pressure cover 2 , and the dust cover 3 forms an interference fit with the hinge portion through the groove structure.

[0021] In one example, an oil guide groove is provided on the hinge portion, and the oil guide groove is used to cooperate with lubricating liquid to lubricate the first mating surface.

[0022] The leveling foot provided in an embodiment of the present invention has a first mating surface formed through a base, and the second end of the connecting rod is hingedly engaged with the base. A through-hole is provided on the surface of the base opposite the top surface, and the diameter of the through-hole matches the hinged portion. The present invention mechanically limits the second end of the connecting rod within a preset swing angle range through the through-hole, thereby increasing the mechanical adjustment range of the connecting rod.

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0025] Figure 1 Schematic diagram of the basic structure of the leveling foot for the present invention;

[0026] Figure 2 is Figure 1 Schematic diagram of the A-A cross-section of Specific implementation manners

[0027] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0028] An embodiment of the present invention provides a leveling foot, as Figure 1 , Figure 2 shown, including a connecting rod 1, a bushing 4 and a base 5;

[0029] A first groove is provided on the top surface of the base 5, and the bushing 4 is disposed in the first groove;

[0030] The connecting rod 1 includes an opposite first end and a second end, wherein the first end is used to connect to a target device, and the second end is a hinge portion;

[0031] The bushing 4 is provided with a first mating surface, and the second end is hingedly mated with the bushing 4;

[0032] A through hole is formed on a surface of the base 5 opposite to the top surface, and the diameter of the through hole is adapted to the hinge portion for mechanically limiting the second end within a preset swing angle range.

[0033] As Figure 1 shown, in this example, the connecting rod 1 may include three parts, wherein a thread is provided on the first end for connecting to a target device, a connecting column base may be provided between the first end and the second end, and a hinge portion may be provided at the second end. In this example, as Figure 1 shown, a first groove is provided on the top surface of the base 5, and the bushing 4 is fixed in the first groove by screws, thereby ensuring the stability of the bushing 4. The bushing 4 can be made of materials such as brass, resin, and ceramic. The top surface height of the bushing 4 is slightly lower than the top surface height of the base 5. The bushing 4 is provided with a first mating surface and is hingedly mated with the second end of the connecting rod 1.

[0034] Meanwhile, in this example, a through hole is formed on a surface of the base 5 opposite to the top surface, and the diameter of the through hole is adapted to the hinge portion. The through hole in this example is used to mechanically limit the hinge portion of the connecting rod 1 within a preset swing angle range.

[0035] In this embodiment, the leveling foot is provided with a first mating surface through a seat, and the second end of the connecting rod is hinged with the seat; a through hole is provided on the surface of the base opposite to the top surface, and the diameter of the through hole is adapted to the hinge portion. In this example, the second end of the connecting rod is mechanically limited within a preset swing angle range through the through hole, thereby improving the mechanical adjustment range of the connecting rod.

[0036] In one example, the hinge portion is a spherical hinge portion, and the first mating surface is a hemispherical mating surface.

[0037] As Figure 2 shown, in this example, the hinge portion is a spherical hinge portion, and correspondingly, the first mating surface provided at the center of the top circular surface of the seat 4 is a spherical groove, which is hemispherical in size and is in spherical mating with the spherical hinge portion of the connecting rod 1.

[0038] In one example, the leveling foot further includes an adjusting plate 6 and an adjusting member 9;

[0039] The adjusting member 9 is connected to the hinge portion through the adjusting plate 6 and the through hole;

[0040] The surface of the base 5 opposite to the top surface is a frustum surface, the adjusting plate 6 is arranged on the frustum surface, and the mating surface between the adjusting plate 6 and the frustum surface is an involute surface.

[0041] As Figure 2 shown, a cylindrical through hole is provided in the middle of the base 5, which is in mating with the spherical hinge portion of the connecting rod 1. The spherical hinge surface is higher than the involute surface of the frustum of the base. The opening diameter of the through hole forms a mechanical swing angle limit with the spherical head cylinder of the connecting rod 1. The leveling foot further includes an adjusting plate 6 and an adjusting member 9. The surface of the base 5 opposite to the top surface is a frustum surface. The adjusting plate 6 is arranged on the frustum surface through the adjusting member 9, and the mating surface between the adjusting plate 6 and the frustum surface is an involute surface. The first mating surface of the seat 4 is also provided with an opening, and the adjusting member 9 also passes through the opening of the adjusting plate 6, the through hole and the seat 4 to be connected to the hinge portion of the connecting rod 1.

[0042] In this example, the frustum surface of the base 5 and the top surface of the adjusting plate 6 are both involute surfaces. The involute equation in the x - y plane Cartesian coordinate is expressed as shown in the following formula:

[0043] X0 = 2πrt × cos(360 × t - a)

[0044] Y0 = 2πrt × sin(360 × t - a)

[0045] X = X0 + 2πrt × sin(360 × t - a)

[0046] Y = Y0 - 2πrt × cos(360 × t - a)

[0047] Where: r is the base circle radius; t is an intermediate parameter; a is the initial angle. In this embodiment, r = 20; a = 60. When the screw 1 undergoes mechanical deflection, the adjusting plate 6 rotates along with the adjusting member 9, so that the involute surface at the top of the adjusting plate 6 and the involute surface of the bottom circular table surface of the base 5 are displaced. The greater the deflection angle, the greater the pressure surfaces of the two, and the greater the formed swing damping, thereby reducing the influence of external disturbances on the leveling support and increasing the stability of the leveling support.

[0048] In one example, the leveling foot also includes an elastic member 7, and the elastic member 7 is arranged between the adjusting member 9 and the adjusting plate 6, and the elastic member 7 is used to ensure the fit between the adjusting plate 6 and the circular table surface before and after adjusting the adjusting member 9.

[0049] In this example, the elastic member 7 can be a spring, and the adjusting member 9 can be a screw, and the elastic member 7 is arranged between the adjusting member 9 and the adjusting plate 6. Before and after adjusting the adjusting member 9, the elastic member 7 can ensure the close fit between the adjusting plate 6 and the circular table surface.

[0050] In one example, the leveling foot also includes a washer 8, and the washer 8 is arranged between the elastic member 7 and the adjusting member 9.

[0051] In this example, a washer 8 is also arranged between the elastic member 7 and the adjusting member 9.

[0052] In one example, the adjusting member 9 is an adjustable screw, and a corresponding threaded hole is provided in the hinge portion, and the adjustable screw can be inserted into the threaded hole to achieve the fit between the adjusting plate 6 and the circular table surface.

[0053] In this example, the adjusting member 9 can be an adjustable screw, that is, an internal thread (not shown in the figure) can be provided on the spherical hinge portion of the connecting rod 1, and the size of the internal thread can be changed according to the load-bearing capacity. The depth of the internal thread is limited so that when the adjustable screw is in the limit tightening state, the elastic member 7 is in a non-limit compression state.

[0054] In one example, the leveling foot also includes an anti-slip pad 10, and the anti-slip pad 10 is arranged on the bottom surface of the base 5;

[0055] The bottom surface of the anti-slip pad 10 is a rough surface, and the rough surface is used to increase the friction between the anti-slip pad and the contact surface.

[0056] In this example, the overall structure of the base 5 is frustum-shaped, and the large-area bottom support disc provides sufficient contact area to increase the stability of the leveling foot. As Figure 2There is a cavity between the circular tabletop of the base 5 shown and the bottom surface of the base 5. In this example, the cavity is sealed by the anti-slip pad 10. The anti-slip pad 10 is slightly higher than the bottom surface of the base 5, for example, 0.1 mm. The anti-slip pad 10 can be made of polyurethane. At the same time, the anti-slip pad 10 is provided with a rough rubbing surface, for example, it can be a knurled shape on the bottom surface or a radially grooved shape, which is used to increase the friction between the anti-slip pad and the contact surface. The anti-slip pad 10 can be milled to form radially grooved shapes. The bottom of the base 5 is connected to the anti-slip pad 10 by screws to ensure the stability of the anti-slip pad 10 and increase the friction between the ground and the leveling foot.

[0057] In one example, the leveling foot further includes a gland 2, the gland 2 is fixed on the top surface of the base 5, and the gland 2 is provided with a second mating surface that mates with the hinge portion.

[0058] As Figure 2 shown, in this example, a gland 2 is also provided on the top surface of the base 5. Two glands 2 can be fixed on the top surface of the base 5 by screws. At the same time, on the basis of the foregoing embodiment, in this example, the gland 2 is provided with a second mating surface that mates with the hinge portion. By combining the first mating surface of the bushing 4 with the second mating surface of the gland 2, a complete mating surface with the spherical hinge portion is formed.

[0059] In one example, the leveling foot further includes a dust cover 3. The gland 2 is provided with a groove structure, and the dust cover 3 forms an interference fit with the hinge portion through the groove structure.

[0060] Since there is still a certain gap between the second mating surface of the gland 2 and the hinge portion, in this example, the gland 2 is provided with a groove structure, for example Figure 2 the horizontal groove structure in. This groove structure is used to install the dust cover 3, and the width of the groove can be 1 mm. The rubber dust cover 3 has a hole in the middle for sleeving on the upper part of the spherical hinge portion of the connecting rod 1. The surface shape of the mating surface between the gland 2 and the spherical hinge portion of the connecting rod 1 is a spherical surface at a height of 2 mm from the center of the ball. The dust cover 3 has an interference fit with the groove structure of the gland 2 to ensure that it does not come off during the rotation and swinging movements of the screw rod.

[0061] In one example, an oil guide groove is provided on the hinge portion, and the oil guide groove is used to cooperate with lubricating fluid to lubricate the first mating surface.

[0062] In this example, the spherical hinge portion of the connecting rod 1 can be pre-milled to form an oil guide groove, which can lubricate the mating surface between the ball head and the bushing 4, increase wear resistance, and extend the service life of the structure.

[0063] When the leveling feet of this embodiment adjust the level of the equipment, the rotation of the leveling feet can be easily adjusted, causing the screw to rotate and adjust up and down relative to the equipment. During the adjustment process, the limiting function of the adjusting part 9 prevents the rotation action from being locked. After the adjustment action is completed, due to the involute surface between the round table surface and the adjusting plate 6, the ability of the equipment to resist external interference increases, enhancing the stability of the leveling feet.

[0064] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0065] The serial numbers of the above embodiments of the present invention are only for description and do not represent the superiority or inferiority of the embodiments.

[0066] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. All of these are within the protection scope of the present invention.

Claims

1. A leveling foot, characterized in that: It comprises a connecting rod (1), a liner (4) and a base (5); The top surface of the base (5) is provided with a first groove, and the liner (4) is arranged in the first groove; The connecting rod (1) comprises a first end and a second end opposite to each other, wherein the first end is used to connect with the target device, and the second end is a hinged portion; The liner (4) is provided with a first mating surface, and the second end is hingedly mated with the liner (4); A through hole is provided on a surface of the base (5) opposite to the top surface, the diameter of the through hole being adapted to the hinge portion, and being used for mechanically limiting the second end within a preset swing angle range; The leveling foot further comprises an adjustment plate (6) and an adjustment member (9); The adjusting member (9) passes through the adjusting plate (6) and the through hole and is connected to the hinge portion; The side of the base (5) opposite to the top surface is a frustum, the adjustment plate (6) is arranged on the frustum, the mating surface of the adjustment plate (6) and the frustum is an involute surface, and the involute equation under the Cartesian coordinates of the xy plane is expressed as follows: Among them: r is the base circle radius, t is the intermediate parameter, and a is the initial angle; The hinge portion is a spherical hinge portion, and the first mating surface is a hemispherical mating surface; The leveling foot further includes an elastic member (7); The elastic member (7) is arranged between the adjusting member (9) and the adjusting plate (6), and the elastic member (7) is used to ensure the fit between the adjusting plate (6) and the circular table before and after the adjusting member (9) is adjusted; The leveling foot further comprises a pressure cover (2), the pressure cover (2) being fixed on the top surface of the base (5), and the pressure cover (2) being provided with a second matching surface matching the hinged portion.

2. The leveling foot according to claim 1, wherein: The leveling foot further comprises a washer (8), and the washer (8) is arranged between the elastic member (7) and the adjusting member (9).

3. The leveling foot according to claim 1, wherein: The adjusting member (9) is an adjustable screw, and the hinge portion is provided with a corresponding threaded hole. The adjustable screw can be inserted into the threaded hole to achieve the fitting of the adjusting plate (6) with the circular table surface.

4. The leveling foot according to any one of claims 1 to 3, characterized in that: The leveling foot further comprises an anti-skid pad (10), and the anti-skid pad (10) is arranged on the bottom surface of the base (5); The bottom surface of the anti-slip pad (10) is a rough surface, and the rough surface is used to increase the friction between the anti-slip pad and the contact surface.

5. The leveling foot according to claim 1, wherein: The leveling foot further comprises a dust cover (3); a groove structure is provided on the pressure cover (2); and the dust cover (3) forms an interference fit with the hinge portion through the groove structure.

6. The leveling foot according to any one of claims 1 to 3, characterized in that: An oil guide groove is provided on the hinge portion, and the oil guide groove is used to cooperate with lubricating liquid to lubricate the first matching surface.

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