CN215677012U

CN215677012U - Pendulum structure and spirit level

Info

Publication number: CN215677012U
Application number: CN202122449127.XU
Authority: CN
Inventors: 陈锋; 王�锋
Original assignee: Suzhou Tie Jin Science & Technology Corp ltd
Current assignee: Suzhou Tie Jin Science & Technology Corp ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-01-28
Anticipated expiration: 2031-10-11

Abstract

The application relates to a pendulum bob structure and a level meter, which are applied to level meter equipment and comprise a fixed shaft; the bearing inner ring is sleeved on the fixed shaft; the bearing outer ring is arranged on the outer side of the bearing inner ring; a cage disposed between the bearing inner race and the bearing outer race; the steel ball is arranged in the retainer and is in sliding fit with the bearing inner ring and the bearing outer ring; the pendulum bob is connected with the bearing outer ring; the bearing outer ring is provided with a raceway, the raceway is spherical, and the steel ball can rotate in the raceway so that the bearing outer ring and the bearing inner ring can rotate mutually. This application just uses sharp axle and cover to establish the aligning bearing that just can realize the location swing function of pendulum through the design of simplifying the pendulum structure on the sharp epaxial, greatly reduced manufacturing cost, also convenient the maintaining it.

Description

Pendulum structure and spirit level

[ technical field ] A method for producing a semiconductor device

The application relates to a pendulum structure and a level meter, and belongs to the technical field of level meter equipment.

[ background of the invention ]

In various construction and experiment processes, the levelness of an object is often required to be measured, so that the level instrument equipment is very important. Spirit levels generally have a pendulum structure, the degree of levelness being measured by the angle of oscillation of the pendulum structure in cooperation with other components of the level.

Most structures of pendulum structures in the prior art are complex, the pendulum structures can vertically and transversely swing only by adopting the cooperation between multiple shafts or multiple bearings, the production and manufacturing cost is high, and the pendulum structures are not easy to maintain.

Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

[ Utility model ] content

The application aims to provide a pendulum bob structure with a simple structure and a level gauge.

The purpose of the application is realized by the following technical scheme: a pendulum structure for use in a level device, comprising:

a fixed shaft;

the bearing inner ring is sleeved on the fixed shaft;

the bearing outer ring is arranged on the outer side of the bearing inner ring;

a cage disposed between the bearing inner race and the bearing outer race;

the steel ball is arranged on the retainer and is in sliding fit with the bearing inner ring and the bearing outer ring; and

the pendulum bob is connected with the bearing outer ring;

the bearing outer ring is provided with a raceway, the raceway is spherical, and the steel ball can rotate in the raceway so that the bearing outer ring and the bearing inner ring can rotate mutually.

Further, the retainer is provided with an installation groove, and at least part of the balls are arranged in the installation groove.

Furthermore, the pendulum structure also comprises dust covers arranged on two sides of the bearing outer ring and a supporting piece used for fixing the dust covers;

the dustproof cover outer ring and the bearing outer ring are fixedly connected through the supporting piece, and a gap exists between the inner ring of the dustproof cover and the bearing inner ring.

Further, the pendulum structure has a first state that is subjected to vibration in a radial direction of the fixed shaft, and a second state that is subjected to vibration in an axial direction of the fixed shaft;

when the pendulum structure is in the first state, the pendulum swings in a radial direction of the fixed shaft; when the pendulum structure is in the second state, the pendulum swings in the axial direction of the fixed shaft.

Further, the pendulum has a connection end connected with the bearing outer race, and a swinging end connected with the connection end.

Further, the connecting end is directly connected with the bearing outer ring.

Further, the connecting end is provided with an accommodating cavity;

the bearing outer ring is arranged in the accommodating cavity.

The present application also provides a level comprising at least a pendulum structure as described above

Compared with the prior art, the method has the following beneficial effects: this application just uses sharp axle and cover to establish the aligning bearing that just can realize the location swing function of pendulum through the design of simplifying the pendulum structure on the sharp epaxial, greatly reduced manufacturing cost, also convenient the maintaining it.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of a pendulum structure according to an embodiment of the present application;

fig. 2 is another schematic view of the pendulum structure according to the embodiment of the present application.

[ detailed description ] embodiments

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, a pendulum structure according to an embodiment of the present application is applied to a level device, and includes a fixed shaft 1, a bearing inner ring 2 sleeved on the fixed shaft 1, a bearing outer ring 3 disposed outside the bearing inner ring 2, a retainer 4 disposed between the bearing outer ring 3 and the bearing inner ring 2, a pendulum 6 connected to the bearing outer ring 3, and a steel ball 5 disposed on the retainer 4. In this embodiment, the fixed shaft 1 is a linear shaft, and the bearing inner ring 2 is sleeved on the linear shaft.

At least part of the steel balls 5 are placed in the retainer 4 and can be in sliding fit with the bearing outer ring 3 and the bearing inner ring 2. In this embodiment, the retainer 4 is provided with a plurality of slots, the number of the slots corresponds to the number of the steel balls 5, that is, one steel ball 5 is placed in each slot, thereby preventing the steel balls 5 from running and avoiding mutual biting and grinding among the steel balls 5. The plurality of slot holes are uniformly distributed, so that the steel balls 5 are arranged and kept at a fixed distance, and the moving force borne by the bearing outer ring 3 and the bearing inner ring 2 is uniformly diffused when the steel balls 5 move.

Specifically, the bearing outer ring 3 and the bearing inner ring 2 are provided with raceways, including a first raceway 21 provided on the bearing inner ring 2, and a second raceway 31 provided on the bearing outer ring 3. The steel balls 5 are rotatable within the raceways to achieve a sliding fit with the bearing outer race 3 and the bearing inner race 2. The first raceway 21 on the bearing inner ring 2 is formed by inwards recessing along the inner surface of the bearing inner ring 2 so as to match the shape of the steel ball 5, the steel ball 5 at least partially protruding out of the retainer 4 can be accommodated in the first raceway 21, and the steel ball 5 can rotate along the direction of the first raceway 21.

The second raceway 31 on the bearing outer ring 3 is the whole inner surface of the bearing outer ring 3, and is spherical, and the steel ball 5 can rotate in the second raceway 31 along the axial direction of the fixed shaft 1 or the direction perpendicular to the axial direction. Namely, the bearing outer ring 3 can move along the axial direction of the fixed shaft 1 or the direction perpendicular to the axial direction relative to the steel ball 5 and the bearing inner ring 2, and then the pendulum bob 6 connected with the bearing outer ring 3 is driven to swing along the axial direction of the fixed shaft 1 or the direction perpendicular to the axial direction, so that the positioning and swinging functions of the pendulum bob structure are realized.

In order to prevent external dust from entering between the bearing inner ring 2 and the bearing outer ring 3 and to influence the overall operation precision of the bearing, in this embodiment, the pendulum structure further includes dust covers 7 disposed on both sides of the bearing outer ring 3, trapezoidal tooth openings are disposed on both sides of the bearing outer ring 3, a support member 8 is disposed between the bearing outer ring 3 and the dust covers 7, and the dust covers 7 can be fixed on the bearing outer ring 3 by being embedded with the trapezoidal tooth openings on both sides of the bearing outer ring 3. When the steel ball 5 rotates to the two sides of the second raceway 31 along the axial direction of the fixed shaft 1 on the second raceway 31, the retainer 4 is abutted against the dustproof cover 7, so that the steel ball 5 is prevented from sliding out of the second raceway 31 through the matching limit of the dustproof cover 7 and the retainer 4. In this embodiment, the supporting member 8 is a sealing ring, which can further increase the sealing performance of the whole structure while playing a role of fixing and supporting.

A gap is formed between the dust cover 7 and the bearing inner ring 2, and inclined portions 22 are provided on both sides of the bearing inner ring 2, and the steel balls 5 rotate in the second raceway 31 in the axial direction of the stationary shaft 1 or in a direction perpendicular to the axial direction, that is, when the bearing outer ring 3 is movable relative to the steel balls 5 and the bearing inner ring 2 in the axial direction of the stationary shaft 1 or in a direction perpendicular to the axial direction, one end of the dust cover 7 close to the bearing inner ring 2 is movable along the inclined portions 22. The arrangement can further reduce the clearance between the dustproof cover 7 and the bearing inner ring 2, strengthen the dustproof effect of the pendulum bob structure, prevent external dust from entering the bearing outer ring 3 and influencing the matching between the steel ball 5 and the first raceway 21 and the second raceway 31.

By the above, the bearing outer ring 3, the retainer 4, the bearing inner ring 2, the dust cover 7 and the steel ball 5 in the application jointly form the self-aligning bearing, so that the pendulum structure can realize the positioning and swinging functions of the pendulum structure only through the self-aligning bearing, and the pendulum structure is simple in structure, low in manufacturing cost and convenient to maintain.

Specifically, the pendulum 6 has a connection end 61 connected to the bearing cup 3, and a swing end 62 connected to the connection end 61. The pendulum structure has a first state subjected to vibration in the radial direction of the fixed shaft 1 and a second state subjected to vibration in the axial direction of the fixed shaft 1; when the pendulum bob structure is in a first state, the pendulum bob 6 swings along the radial direction of the fixed shaft 1 under the action of self gravity through the self-aligning bearing; when the pendulum structure is in the second state, the pendulum 6 swings in the axial direction of the fixed shaft 1 by the self-aligning bearing under the action of its own gravity. In this embodiment, the connecting end 61 has an accommodating cavity 611, and the self-aligning bearing is integrally disposed in the accommodating cavity 611 and is fixedly connected to the inner wall of the accommodating cavity 611, so as to connect the pendulum bob 6 and the bearing outer ring 3.

In another embodiment, the connection mode of the pendulum bob 6 and the bearing outer ring 3 may also be selected according to actual situations, for example, the connection end 61 and the bearing outer ring 3 are directly connected by one of the modes of integral molding, welding, riveting, or the like, and is not particularly limited herein.

The present application further provides a level comprising the pendulum structure of any of the embodiments described above, for measuring the levelness of an object.

In summary, the following steps: this application just uses sharp axle and cover to establish the aligning bearing that just can realize the location swing function of pendulum through the design of simplifying the pendulum structure on the sharp epaxial, greatly reduced manufacturing cost, also convenient the maintaining it.

The above is only one specific embodiment of the present application, and any other modifications based on the concept of the present application are considered as the protection scope of the present application.

Claims

1. A pendulum structure for use in a level device, comprising:

a fixed shaft;

the bearing inner ring is sleeved on the fixed shaft;

the bearing outer ring is arranged on the outer side of the bearing inner ring;

a cage disposed between the bearing inner race and the bearing outer race;

the pendulum bob is connected with the bearing outer ring;

2. A pendulum construction according to claim 1, wherein the holder is provided with a mounting slot in which at least part of the ball is disposed.

3. A pendulum structure in accordance with claim 1, further comprising dust caps disposed on both sides of the bearing cup, and a support to fix the dust caps;

4. A pendulum structure in accordance with claim 3, wherein the pendulum structure has a first state subject to vibration in a radial direction of the stationary shaft, and a second state subject to vibration in an axial direction of the stationary shaft;

5. A pendulum structure in accordance with claim 1, wherein the pendulum has a connection end connected to the bearing cup and a pendulum end connected to the connection end.

6. A pendulum construction according to claim 5 wherein the attachment end is directly attached to the bearing cup.

7. A pendulum construction according to claim 5, wherein the attachment end has a receiving cavity;

the bearing outer ring is arranged in the accommodating cavity.

8. Level, characterized in that it comprises at least a pendulum structure according to any one of claims 1 to 7.