Antistatic bearing
By setting up an electrostatic conduction path in the bearing, the base, positioning shrapnel, dielectric copper sheet, graphite electrode and conductive shaft are used to conduct static electricity to the grounding wire, which solves the problem of sparks and fire accumulation during high-speed rotation of the bearing, and improves safety sex.
Patent Information
- Application Number
- CN202421139197.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-23
AI Technical Summary
Existing bearings are prone to static electricity when rotating at high speed, and the accumulation of static electricity may lead to sparks and fires, posing safety hazards.
An antistatic bearing was designed to form an electrostatic conduction path by setting a base, positioning the shrapnel, dielectric copper sheet, graphite electrode, spring and conductive shaft, and conducting static electricity is sequentially transmitted to the dielectric copper sheet, graphite electrode, spring and conductive shaft. The conductive wires that are conductive to ground are discharged through the conductive shaft.
It effectively reduces the electrostatic voltage of the bearing when it rotates at high speed, prevents the occurrence of electrostatic sparks and fires, and improves the safety of the equipment.
Smart Images
Figure CN222229220U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearings, in particular to an antistatic bearing. Background Art
[0002] Bearings are an important component in contemporary mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. With the rapid development of social economy, the market demand for bearings is increasing and the requirements are getting higher and higher.
[0003] Ordinary bearings include an inner ring and an outer ring, as well as a ball disposed between the inner ring and the outer ring. There is radial clearance between the inner ring and the outer ring of some existing bearings, and static electricity is easily generated when the bearing rotates at high speed. When the static electricity accumulates to a certain extent, sparks will be generated, which may cause a fire and pose a safety hazard. Therefore, an antistatic bearing is proposed to address the above problem. Utility Model Content
[0004] The utility model aims to provide an antistatic bearing to solve the problem that radial play exists between the inner ring and the outer ring of some existing bearings, and static electricity is easily generated when the bearing rotates at high speed. When the static electricity accumulates to a certain extent, sparks will be generated, which may cause fire and pose a safety hazard.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An antistatic bearing comprises a base and a conductive shaft, wherein the outer side of the base is provided with a mounting groove and a threaded hole, the base is connected with a positioning spring piece via a threaded hole bolt, the inner side of the base is provided with an assembly cavity, the base is fixedly connected with a dielectric copper sheet via the assembly cavity, the top of the dielectric copper sheet is fixedly connected with a graphite electrode, the top of the graphite electrode is fixedly connected with a spring, the inner side of the spring is provided with a conductive shaft, the outer side of the conductive shaft is fixedly connected with a bearing body, and the inner side of the base is fixedly connected with the bearing body.
[0007] Preferably, the base is a cylindrical structure, and there are four installation grooves, threaded holes and positioning springs. The installation grooves are all rectangular grooves, and the positioning springs are all rectangular bent pieces.
[0008] Preferably, the assembly cavity is a cylindrical groove, the dielectric copper sheet is a circular sheet, the graphite electrode is a cylindrical block, and the radius of the dielectric copper sheet is consistent with the bottom radius of the graphite electrode.
[0009] Preferably, the spring is distributed vertically, the outer diameter of the spring is smaller than the diameter of the assembly cavity, and the inner diameter of the spring is smaller than the diameter of the lower half of the conductive shaft.
[0010] Preferably, the conductive shaft is a cylindrical shaft, and the bottom end of the conductive shaft is a conical structure.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] In the utility model, by providing a base, a positioning spring, a dielectric copper sheet, a graphite electrode, a spring and a conductive shaft, the device can sequentially conduct the static electricity generated by the device to the dielectric copper sheet, the graphite electrode, the spring and the conductive shaft through the positioning spring and the base. At the same time, the bearing body will also generate a small amount of static electricity, and the small amount of static electricity generated by the bearing body will also be conducted to the conductive shaft, and the static electricity will be conducted to the conductive wire through the top of the conductive shaft, and then discharged through the grounded conductive wire. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 This is a cross-sectional view of the overall structure of the utility model;
[0015] Figure 3 It is the overall structure assembly drawing of the utility model.
[0016] In the figure: 1. base; 2. mounting groove; 3. threaded hole; 4. positioning spring; 5. assembly cavity; 6. dielectric copper sheet; 7. graphite electrode; 8. spring; 9. conductive shaft; 10. bearing body. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0019] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.
[0020] See also Figure 1-3 , the utility model provides a technical solution:
[0021] An antistatic bearing comprises a base 1 and a conductive shaft 9, wherein a mounting groove 2 and a threaded hole 3 are provided on the outer side of the base 1, a positioning spring piece 4 is bolted to the base 1 through the threaded hole 3, an assembly cavity 5 is provided on the inner side of the base 1, a dielectric copper sheet 6 is fixedly connected to the base 1 through the assembly cavity 5, a graphite electrode 7 is fixedly connected to the top of the dielectric copper sheet 6, a spring 8 is fixedly connected to the top of the graphite electrode 7, a conductive shaft 9 is provided on the inner side of the spring 8, a bearing body 10 is fixedly connected to the outer side of the conductive shaft 9, and the bearing body 10 is fixedly connected to the inner side of the base 1.
[0022] The base 1 is a cylindrical structure, with four mounting grooves 2, threaded holes 3 and positioning springs 4. The mounting grooves 2 are all rectangular grooves, and the positioning springs 4 are all rectangular bent pieces, which can elastically fix the base 1; the assembly cavity 5 is a cylindrical groove, the dielectric copper sheet 6 is a circular sheet, and the graphite electrode 7 is a cylindrical block. The radius of the dielectric copper sheet 6 is consistent with the bottom radius of the graphite electrode 7, and the dielectric copper sheet 6 can reduce the wear of the graphite electrode 7; the spring 8 is vertically distributed, the outer diameter of the spring 8 is smaller than the diameter of the assembly cavity 5, and the inner diameter of the spring 8 is smaller than the diameter of the lower half of the conductive shaft 9. The spring 8 can fit with the conical structure at the bottom of the conductive shaft 9; the conductive shaft 9 is a cylindrical shaft, and the bottom end of the conductive shaft 9 is a conical structure, which can fit with the top of the spring 8.
[0023] Working process: Assemble the device before use. The positioning spring piece 4 can be fixed on the driving device by cooperating with the positioning spring piece 4 and the coupling component. The base 1 is connected to the positioning spring piece 4 by bolts through the threaded hole 3, and the positioning spring piece 4 can be limited by the mounting groove 2 on the outside of the base 1. Therefore, the device can be installed on the driving device, and then one end of the conductive wire is connected to the top of the conductive shaft 9, and the other end of the conductive wire is grounded, and the device can be used normally; the base 1 is fixedly connected to the dielectric copper sheet 6 through the assembly cavity 5, and the conductive copper sheet 6 can increase the conductive area and reduce the wear of the graphite electrode 7. The top of the dielectric copper sheet 6 is fixedly connected to the graphite electrode 7, and the graphite electrode 7 can reduce the internal resistance generated during rotation, so that the driving device is not easy to rotate at normal high speed. An arc is generated, and since the internal resistance of the device is small when it rotates at high speed, the electrostatic voltage can be effectively reduced. The top of the graphite electrode 7 is fixedly connected to the spring 8, and a conductive shaft 9 is provided on the inside of the spring 8. The inner diameter of the spring 8 is smaller than the diameter of the lower half of the conductive shaft 9. Therefore, the upper side of the spring 8 can fit with the cylindrical structure at the bottom of the conductive shaft 9, and the friction resistance is small, which can prevent static electricity generated by hard friction. The device can conduct the static electricity generated by the device to the dielectric copper sheet 6, the graphite electrode 7, the spring 8 and the conductive shaft 9 in sequence through the positioning spring piece 4 and the base 1. At the same time, the bearing body 10 will also generate a small amount of static electricity. The small amount of static electricity generated by the bearing body 10 will also be conducted to the conductive shaft 9, and the static electricity will be conducted to the conductive wire through the top of the conductive shaft 9, and then discharged through the grounded conductive wire.
[0024] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.
[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An antistatic bearing, comprising a base (1) and a conductive shaft (9), characterized in that: The base (1) is provided with a mounting groove (2) and a threaded hole (3) on the outside, the base (1) is bolted with a positioning spring (4) through the threaded hole (3), the base (1) is provided with an assembly cavity (5) on the inside, the base (1) is fixedly connected with a dielectric copper sheet (6) through the assembly cavity (5), the top of the dielectric copper sheet (6) is fixedly connected with a graphite electrode (7), the top of the graphite electrode (7) is fixedly connected with a spring (8), the inside of the spring (8) is provided with a conductive shaft (9), the outside of the conductive shaft (9) is fixedly connected with a bearing body (10), and the inside of the base (1) is fixedly connected with the bearing body (10).
2. An antistatic bearing according to claim 1, characterized in that: The base (1) is a cylindrical structure, and has four installation slots (2), four threaded holes (3) and four positioning springs (4). The installation slots (2) are all rectangular slots, and the positioning springs (4) are all rectangular bent pieces.
3. The antistatic bearing according to claim 1, characterized in that: The assembly cavity (5) is a cylindrical groove, the dielectric copper sheet (6) is a circular sheet, the graphite electrode (7) is a cylindrical block, and the radius of the dielectric copper sheet (6) is consistent with the bottom radius of the graphite electrode (7).
4. The antistatic bearing according to claim 1, characterized in that: The spring (8) is distributed vertically, the outer diameter of the spring (8) is smaller than the diameter of the assembly cavity (5), and the inner diameter of the spring (8) is smaller than the diameter of the lower half of the conductive shaft (9).
5. The antistatic bearing according to claim 1, characterized in that: The conductive shaft (9) is a cylindrical shaft, and the bottom end of the conductive shaft (9) is a conical structure.