CN218765326U

CN218765326U - Manual leveling device

Info

Publication number: CN218765326U
Application number: CN202223170302.2U
Authority: CN
Inventors: 段玮; 古正宇; 何芬; 彭平; 金宏峰
Original assignee: Chongqing Sushi Sida Test Equipment Co ltd
Current assignee: Chongqing Sushi Sida Test Equipment Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-03-28
Anticipated expiration: 2032-11-29

Abstract

The utility model provides a manual levelling device belongs to mechanical technical field. The leveling device solves the problems that the existing leveling device is inconvenient to adjust and cannot guarantee the flatness for a long time. The manual leveling device comprises a fixed seat and a platform arranged above the fixed seat, wherein three first threaded holes which vertically run through the platform are formed in the platform, a connecting line which sequentially connects the three first threaded holes forms a triangle, a leveling screw is connected in the first threaded hole in a threaded manner, the lower end of the leveling screw abuts against the fixed seat, and a fastening structure which is used for fixing the platform after the platform is leveled is arranged between the fixed seat and the platform. The leveling screw can be rotated above the platform, the rotation is not blocked by the platform, the operation is convenient, and the flatness of the platform can be ensured for a long time.

Description

Manual leveling device

Technical Field

The utility model belongs to the technical field of machinery, a manual levelling device, especially a manual levelling device is used in aerospace gyroscope test is related to.

Background

With the development of society, the requirements of various industries on a placement platform of hardware facilities related in the industries are higher and higher, and particularly, the requirements on the placement of some precise instruments are higher and higher. Such as the platforms used to test aerospace gyroscopes, often require sufficient flatness of the platform. The existing leveling of a workbench adopts a three-point support leveling mode, but the three-point support has the following problems: when the gravity center of the supported object falls near the edge of the triangle formed by the three supporting points or deviates from the inner area of the triangle, the supported object is easy to turn over, thereby causing accidental damage to the object and even causing safety accidents.

Therefore, the Chinese patent with the application publication number of CN114562988A discloses a leveling device, which comprises a leveling mounting disc, a leveling disc and three leveling studs, wherein the three leveling studs are distributed along the central shaft of the leveling mounting disc in a circular array, stud sleeve mounting grooves are formed in the upper surfaces of the leveling studs, mounting sleeves are inserted into the stud sleeve mounting grooves and then are sleeved into the sleeve grooves, the mounting difficulty is reduced, and the supported object can be prevented from being laterally turned.

The leveling mounting plate is inconvenient to adjust because a hand needs to extend to the lower part of the leveling mounting plate during leveling, and particularly when the leveling mounting plate is large in size, the operation is more inconvenient; and the fastening structure for fixing the leveling mounting disc is not arranged, and the vibration generated by the supported object can drive the leveling mounting disc to shake together during the test, so that the flatness of the leveling mounting disc is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a manual levelling device that can guarantee the roughness for a long time.

The purpose of the utility model can be realized by the following technical proposal:

manual levelling device, including fixing base and the platform of locating the fixing base top, be equipped with three first screw hole that link up the platform setting from top to bottom on the platform, the line that connects gradually three first screw hole constitutes triangle-shaped, first screw hole female connection has leveling screw, leveling screw's lower extreme supports and leans on the fixing base, be equipped with the fastening structure who is used for fixed platform after the platform leveling between fixing base and the platform.

The leveling screw is in threaded connection with the first threaded hole from top to bottom, the leveling screw can be rotated above the platform, the rotation is not blocked by the platform, and the operation is convenient; the fastening structure can fasten the leveled platform and can ensure the flatness of the platform for a long time.

In the above manual leveling device, the fastening structure includes at least one through hole penetrating the platform from top to bottom, a second threaded hole arranged on the fixing base in one-to-one correspondence with the through hole, and a fastening screw passing through the through hole, the lower end of the fastening screw is in threaded connection with the second threaded hole arranged opposite to the fastening screw, and the head of the fastening screw compresses the platform. The outer diameter of the head of the fastening screw is larger than the aperture of the through hole.

In the manual leveling device, the platform is provided with a containing hole which is positioned above the through hole and is coaxially communicated with the through hole, the aperture of the containing hole is larger than the outer diameter of the head of the fastening screw rod, and the depth of the containing hole is larger than the height of the head of the fastening screw rod.

In the above manual leveling device, the leveling screw is a socket head cap screw.

The accommodating hole is used for accommodating the head of the fastening screw, so that the head of the fastening screw is lower than the upper surface of the platform; the leveling screws are socket head cap screws, so that the upper ends of the leveling screws do not protrude out of the upper surface of the platform, and the upper surface of the platform forms a complete plane.

In the manual leveling device, the lower end of the leveling screw is a conical end, and the fixed seat is provided with a conical hole which is matched with the conical end at the lower end of the leveling screw. The taper hole is big end down, and in the in-process of leveling, the relative position of through-hole and second screw hole is guaranteed all the time.

In the manual leveling device, the fixed seat is fixedly connected with the screw ejecting block, and the taper hole is formed in the screw ejecting block. The taper hole is lower than the upper surface of fixing base, through setting up the screw kicking block, can reduce the thickness of fixing base to reduce the material, reduce cost.

In the manual leveling device, the fixed seat is fixedly connected with a nut, and the second threaded hole is a threaded hole of the nut. The nut is also arranged to reduce the thickness of the fixing seat.

In the above manual leveling device, the number of the through holes is one, and the through hole is located in a triangle formed by connecting lines of the three first threaded holes.

In the manual leveling device, the number of the through holes is three, the three through holes are distributed in an annular array, the three first threaded holes are distributed in an array, and the array centers of the three through holes coincide with the array centers of the three first threaded holes.

In the above manual leveling device, the distances from the through hole to the two first threaded holes disposed adjacent thereto are equal. When the locking is carried out, the two adjacent leveling screws can be ensured to be stressed in a balanced manner.

Compared with the prior art, the manual leveling device has the following advantages:

all parts are simple to process, leveling, setting and fastening screws are standard parts, and the parts are few, convenient to install and low in cost; the leveling screw can be rotated above the platform, the rotation is not blocked by the platform, the operation is convenient, and the platform can be easily adjusted to the required flatness; after the platform is leveled, the platform is fastened, and the flatness of the platform can be ensured for a long time.

Drawings

Fig. 1 is an installation schematic diagram of a manual leveling device provided by the present invention.

Fig. 2 is a cross-sectional view of the manual leveling device provided by the present invention.

Fig. 3 is a sectional view of the fixing base provided by the present invention.

Fig. 4 is a schematic structural diagram of the fixing base provided by the present invention.

Fig. 5 is a schematic structural diagram of the platform provided by the present invention.

In the figure, 1, a fixed seat; 2. a platform; 3. a first threaded hole; 4. leveling screws; 5. a through hole; 6. a second threaded hole; 7. a fastening screw; 8. a receiving hole; 9. a taper hole; 10. a screw top block; 11. and a nut.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

A manual leveling device is used for testing an aerospace gyroscope and is installed on a vibration isolation base made of reinforced concrete when in use as shown in figure 1. The vibration isolation base can reduce the transmission of outside ground and come vibrations, and the vibrations that the test piece produced on platform 2 simultaneously also can be absorbed by the vibration isolation base of big mass, has improved stability.

As shown in fig. 2-5, the manual leveling device includes a disk-shaped fixing seat 1 and a disk-shaped platform 2 coaxially disposed above the fixing seat 1, three first threaded holes 3 penetrating the platform 2 from top to bottom are disposed on the platform 2, the three first threaded holes 3 are distributed in an annular array along a central axis of the platform 2, a leveling screw 4 is threadedly connected in each first threaded hole 3, and a lower end of the leveling screw 4 abuts against the fixing seat 1.

Specifically, as shown in fig. 2-3, the lower end of the leveling screw 4 is a conical end, the fixing base 1 is fixedly connected with a screw top block 10, the screw top block 10 is provided with a conical hole 9 which is matched with the conical end at the lower end of the leveling screw 4, the conical hole 9 is large in top and small in bottom, and the relative position of the through hole 5 and the second threaded hole 6 is always ensured in the leveling process. In order to prevent the upper end of the leveling screw 4 from extending out of the upper surface of the platform 2, the leveling screw 4 is a socket head cap screw.

In order to ensure the flatness of the platform 2 for a long time, a fastening structure for fixing the platform 2 after the platform 2 is leveled is arranged between the fixed seat 1 and the platform 2.

In this embodiment, as shown in fig. 4 and 5, the fastening structure includes through holes 5 that run through the platform 2 to three from top to bottom, second threaded holes 6 that are provided on the fixing base 1 and are provided in one-to-one correspondence with the through holes 5, and fastening screws 7 that are inserted into the through holes 5, the lower ends of the fastening screws 7 are in threaded connection with the second threaded holes 6 that are provided opposite thereto, and the head of the fastening screws 7 compresses the platform 2.

Three through-holes 5 are distributed in an annular array mode, three first threaded holes 3 are distributed in an array mode, the array centers of the three through-holes 5 coincide with the array centers of the three first threaded holes 3, and the distances from the through-holes 5 to the two first threaded holes 3 which are arranged adjacent to the through-holes are equal. Wherein, the outer diameter of the head of the fastening screw 7 is larger than the aperture of the through hole 5.

As shown in fig. 2, the platform 2 is provided with a receiving hole 8 which is located above the through hole 5 and coaxially communicated with the through hole 5, the diameter of the receiving hole 8 is larger than the outer diameter of the head of the fastening screw 7, and the depth of the receiving hole 8 is larger than the height of the head of the fastening screw 7. The receiving hole 8 is used for receiving the head of the fastening screw 7, so that the head of the fastening screw 7 is lower than the upper surface of the platform 2; the leveling screws 4 are socket head cap screws, so that the upper ends of the leveling screws 4 do not protrude out of the upper surface of the platform 2, and the upper surface of the platform 2 forms a complete plane.

As shown in fig. 2-4, the fixing seat 1 is fixedly connected with a nut 11, the second threaded hole 6 is a threaded hole of the nut 11, and the nut 11 is also arranged to reduce the thickness of the fixing seat 1.

Example two

The structural principle of this embodiment is the same basically as the structural principle of embodiment one, and the difference lies in, has set up three first screw hole 3 that link up the platform 2 setting from top to bottom on platform 2, and three first screw hole 3 distributes along the annular array of the axis of platform 2.

The fastening structure includes to a through-hole 5 that link up the platform 2 setting from top to bottom, locate on the fixing base 1 with the second screw hole 6 of 5 relative settings of through-hole and wear to locate the fastening screw 7 in the through-hole 5, the lower extreme and the 6 threaded connection of second screw hole of fastening screw 7, fastening screw 7's pole head compresses tightly platform 2. Wherein the through hole 5 is arranged coaxially with the platform 2.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a manual leveling device, its characterized in that includes fixing base (1) and locates platform (2) of fixing base (1) top, be equipped with three first screw hole (3) that link up platform (2) setting from top to bottom on platform (2), the line of connecting gradually three first screw hole (3) constitutes triangle-shaped, first screw hole (3) female connection has leveling screw (4), the lower extreme of leveling screw (4) supports and leans on fixing base (1), be equipped with between fixing base (1) and platform (2) and be used for the fastening structure of fixed platform (2) after platform (2) leveling.

2. The manual leveling device of claim 1, wherein the fastening structure comprises at least one through hole (5) formed in the upper and lower through platforms (2), second threaded holes (6) formed in the fixing base (1) and arranged in one-to-one correspondence to the through holes (5), and fastening screws (7) penetrating through the through holes (5), the lower ends of the fastening screws (7) are in threaded connection with the second threaded holes (6) formed in the opposite positions, and rod heads of the fastening screws (7) press the platforms (2).

3. The manual leveling device according to claim 2, wherein the platform (2) is provided with a receiving hole (8) which is positioned above the through hole (5) and is coaxially communicated with the through hole (5), the hole diameter of the receiving hole (8) is larger than the outer diameter of the head of the fastening screw (7), and the depth of the receiving hole (8) is larger than the height of the head of the fastening screw (7).

4. Manual levelling device according to claim 3, characterized in that the levelling screw (4) is a socket head cap screw.

5. The manual leveling device according to claim 1, wherein the lower end of the leveling screw (4) is a conical end, and the fixed seat (1) is provided with a conical hole (9) which is matched with the conical end at the lower end of the leveling screw (4).

6. The manual leveling device according to claim 5, wherein a screw top block (10) is fixedly connected to the fixed seat (1), and the taper hole (9) is formed in the screw top block (10).

7. The manual leveling device according to claim 2, wherein a nut (11) is fixedly connected to the fixed seat (1), and the second threaded hole (6) is a threaded hole of the nut (11).

8. The manual leveling device according to claim 2, wherein the number of the through holes (5) is three, three through holes (5) are distributed in an annular array, three first threaded holes (3) are distributed in an array, and the array center of the three through holes (5) is coincident with the array center of the three first threaded holes (3).

9. Manual levelling device according to claim 8, characterized in that the through holes (5) are equidistant from two first threaded holes (3) arranged adjacent thereto.

10. Manual levelling device according to claim 2, characterized in that the through hole (5) is one and the through hole (5) is located within the triangle formed by the connection of the three first threaded holes (3).