Darkroom rotary table gear motor meeting bottom noise requirement

Abstract

The utility model provides a reduction motor for a darkroom rotary table, which meets the requirement of bottom noise and comprises a rotating shaft, a gear is mounted on the rotating shaft, the lower end of the rotating shaft is mounted at the output end of a reduction box body, and a silk screen gasket is arranged at the root of the rotating shaft and is in contact with the surface of the reduction box body. A shielding structure which has a shielding effect and limits the silk screen gasket is arranged between the silk screen gasket and the gear, the shielding structure enables the silk screen gasket at the rotating shaft not to be affected by external vibration or impact, the service life of the silk screen gasket is prolonged, and the reliability of equipment is improved. The silk screen gasket is arranged at the rotating shaft, and the shielding structure is used for limiting the position of the silk screen gasket, so that the emission of electromagnetic waves when the speed reducer works is effectively reduced, the electromagnetic interference is controlled at a lower level in a shielding manner, and the laboratory requirements and the bottom noise test requirements are met under the condition of normal transmission.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor shielding structure technical field, concretely relates to a darkroom rotary table is with speed reducer motor of meeting the requirement of bottom noise. BACKGROUND

[0002] When motor drive gear drive, drive motor and speed reducer are directly connected with metal physics, the electromagnetic disturbance produced when drive motor works can radiate outward through the interface gap of speed reducer, which results in that it cannot meet the requirement of bottom noise when working, and the bottom noise requirement cannot reach the standard, so that the relevant radiation emission test cannot be carried out according to the standard.

[0003] The driving mode of the equipment in the prior art is also motor driven gear, but interference electromagnetic wave is generated in the work, the bottom noise requirement cannot be met, and the electromagnetic interference when working needs to be handled to meet the radiation emission test demand. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a darkroom rotary table is with speed reducer motor of meeting the requirement of bottom noise to overcome the technical problem that the motor driven gear in the prior art can generate electromagnetic wave and cannot meet the requirement of bottom noise.

[0005] To solve the above technical problem, the utility model adopts the following technical scheme:

[0006] A darkroom rotary table is with speed reducer motor of meeting the requirement of bottom noise, including speed reducer body, the output end of speed reducer body is fixedly connected with the rotating shaft, the rotating shaft is externally equipped with gear, the rotating shaft periphery and the output shaft of speed reducer body are sleeved with silk screen washer, the gear and silk screen washer are provided with shielding structure, and the shielding structure is fixed on the speed reducer body.

[0007] Further, the shielding structure is a circular ring structure, and the shielding structure is sleeved on the rotating shaft periphery.

[0008] Further, the shielding structure is circumferentially provided with a plurality of bolt holes.

[0009] Further, the rotating shaft is provided with a connecting key on the shaft wall, the rotating shaft periphery is provided with a connecting column through the connecting key, the gear includes a first gear and a second gear, and the first gear is fixedly connected with the second gear at the upper end.

[0010] Further, the first gear is installed on the connecting column.

[0011] Further, the rotating shaft top and the first gear interior are provided with a circular pad.

[0012] Further, the connecting column is a hollow structure, and the inner wall of the rotating shaft is provided with a key groove.

[0013] Further, a lifting ring is mounted on the reducer body.

[0014] Further, the diameter of the shielding structure is greater than the diameter of the wire mesh gasket.

[0015] Further, the wire mesh gasket is a braided copper strip or copper mesh.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] The utility model provides a darkroom rotary table uses speed reducer motor of satisfying bottom noise requirement, including the pivot, the gear is installed on the pivot, the lower extreme of pivot is installed in the output of reducer body, sets up wire mesh gasket at the root of pivot, wire mesh gasket and the surface contact of reducer body, is provided with the shielding structure with shielding effect and the position limiting of wire mesh gasket between wire mesh gasket and gear, shielding structure makes wire mesh gasket at the pivot not be influenced by external vibration or impact, prolongs its service life, improves the reliability of equipment, the utility model discloses a wire mesh gasket is set up at the pivot, and the position of wire mesh gasket is limited by shielding structure, effectively reduces the emission of electromagnetic wave when speed reducer motor works, and electromagnetic interference is controlled at the lower level by shielding, satisfies the requirement of laboratory under the condition of normal transmission, satisfies the bottom noise test demand.

[0018] Preferably, the shielding structure is a circular ring composed of two half-ring structures, which improves the detachability of the structure.

[0019] Preferably, a connecting key is arranged on the shaft wall of the pivot, a connecting column is installed through the connecting key, and the gear is fixed on the connecting column, which can ensure the consistency of rotation of the gear and the pivot.

[0020] Preferably, the shielding structure is fixed on the reducer body by bolts, which not only fixes the structure itself but also limits the wire mesh gasket.

[0021] Preferably, a circular gasket is arranged inside the first gear, i.e. at the top of the pivot, which can effectively prevent foreign matters from entering between the pivot and the connecting column, keep the inside of the connecting column clean, and prolong the working effect and service life of the pivot.

[0022] Preferably, a lifting ring is mounted on the reducer body, which facilitates the carrying of the reducer.

[0023] Preferably, the wire mesh gasket is made of a braided copper strip or copper mesh structure, which can effectively protect the equipment from lightning, electromagnetic interference and other factors, and is soft and easy to bend, facilitating construction and installation. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1This is a structural diagram of a reduction motor for a darkroom turntable that meets the noise floor requirements in an embodiment of the utility model;

[0025] Figure 2 This is an exploded schematic diagram of a reduction motor structure for a darkroom turntable that meets the noise floor requirements in an embodiment of the present utility model;

[0026] In the figure, 1. reducer body; 2. drive motor; 3. lifting ring; 4. rotating shaft; 5. wire mesh washer; 6. connecting key; 7. first gear; 8. second gear; 9. circular spacer; 10. fixing bolt; 11. shielding structure; 12. connecting column. DETAILED DESCRIPTION

[0027] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] Explanation of relevant terms

[0029] EMC: abbreviation of Electromagnetic Compatibility, electromagnetic compatibility.

[0030] Radiated Emissions: Electromagnetic disturbances propagated through space and generated by an electronic device.

[0031] Darkroom noise floor: The background noise that exists in the darkroom environment when there is no product under test working.

[0032] In one embodiment of the present invention, a reduction motor for a darkroom turntable is provided that meets the noise floor requirements. Figure 1 As shown, it includes a reducer body 1, a rotating shaft 4, a gear, a wire mesh washer 5 and a shielding structure 11, wherein the rotating shaft 4 is installed at the output end of the reducer body 1, and a wire mesh washer 5 is provided at the bottom of the rotating shaft 4, that is, the output end of the reducer body 1. The wire mesh washer 5, the shielding structure 11 and the gear are all sleeved on the rotating shaft 4, and the shielding structure 11 is provided between the gear and the wire mesh washer 5. A limiting member is installed on the shielding structure, and the limiting member is used to limit the wire mesh washer 5.

[0033] Specifically, the gear includes a first gear 7 and a second gear 8 arranged at the upper end of the first gear 7 and fixedly connected with the first gear 7, wherein the first gear 7 is installed on the connecting column 12, a groove matched with the connecting key 6 on the rotating shaft 4 is formed on the inner wall of the connecting column 12, and a circular pad 9 is arranged at the center through hole of the first gear 7 and fixed on the top end of the rotating shaft 4;

[0034] The shielding structure 11 is in a circular ring shape, and the inner diameter of the shielding structure 11 is the same as the inner diameter of the connecting column 12; a plurality of bolt holes are formed on the annular surface of the shielding structure 11 in the circumferential direction, and the shielding structure 11 is fixed on the surface of the speed reducer body 1 through bolts; since the shielding structure 11 is used for limiting the wire mesh gasket 5, the diameter of the shielding structure 11 is greater than the diameter of the wire mesh gasket 5;

[0035] As an optional mode of the utility model, a lifting ring 3 is installed on the speed reducer body 1, and the driving motor 2 is installed on the input end of the speed reducer body 1.

[0036] In another embodiment of the utility model, a speed reduction motor for a darkroom turntable satisfying the requirement of bottom noise comprises a speed reducer body 1, the output end of the speed reducer body 1 is fixedly connected with a rotating shaft 4, a wire mesh gasket 5 is sleeved on the rotating shaft 4 and the output shaft of the speed reducer body 1, a connecting key 6 is arranged on the surface of the rotating shaft 4, the outer periphery of the rotating shaft 4 is fixedly connected with a connecting column 12 through the connecting key 6, the outer side of the connecting column 12 is fixedly connected with a first gear 7, the top of the first gear 7 is fixedly connected with a second gear 8 through a fixing screw, a shielding structure 11 is arranged on the top of the speed reducer body 1 and the outer side of the rotating shaft 4, and the shielding structure 11 is fixedly connected to the upper surface of the speed reducer body 1 through fixing bolts 10.

[0037] A driving motor 2 is fixedly installed on the left side of the speed reducer body 1, and the output end of the driving motor 2 is fixedly connected with the input end of the speed reducer body 1 through a shaft coupling.

[0038] A circular pad 9 is fixedly connected between the top of the rotating shaft 4 and the inside of the first gear 7, a lifting ring 3 is fixedly connected to the middle of the front side of the speed reducer body 1, the shielding structure 11 is in a semicircular structure, and a plurality of slot openings through which the fixing bolts 10 pass are formed on the periphery of the shielding structure 11; a key groove matched with the connecting key 6 is formed in the inside of the connecting column 12, and the shielding structure 11 is arranged above the wire mesh gasket 5 and used for limiting the position of the wire mesh gasket 5.

[0039] The material of the wire mesh gasket 5 can be a woven copper strip or a copper mesh.

[0040] In still another embodiment of the utility model, a speed reduction motor for a darkroom turntable satisfying the requirement of bottom noise is provided, Figure 2As shown, including reducer body 1, the output end of reducer body 1 is fixedly connected with the rotating shaft 4, the rotating shaft 4 outer circle and reducer body 1 out shaft sleeve have silk screen washer 5, the surface of rotating shaft 4 is provided with connecting key 6, the outer circle of rotating shaft 4 is fixedly connected with connecting column 12 through connecting key 6, the outer side of connecting column 12 is fixedly connected with first gear 7, the top of first gear 7 is fixedly connected with second gear 8 through fixed screw, the top of reducer body 1 and the outer side of rotating shaft 4 are provided with shielding structure 11, shielding structure 11 is fixedly connected on the upper surface of reducer body 1 through fixed bolt 10, the type of reducer can be gear reducer, planetary gear reducer or worm reducer.

[0041] The drive motor 2 is fixedly installed on the left side of the reducer body 1, and the output end of the drive motor 2 is fixedly connected with the input end of the reducer 1 through the shaft coupling.

[0042] The rotating shaft 4 top and first gear 7 inside fixedly connected with circular pad 9, using circular pad 9 sealing can effectively prevent foreign matter into rotating shaft 4 and connecting column 12 between, keep connecting column 12 inside clean, prolong the working effect and life of rotating shaft 4.

[0043] Specifically, the front side of the reducer body 1 is fixedly connected with the lifting ring 3, when the reducer needs to be moved or installed, the lifting ring 3 can be used as a carrying point, which is convenient for carrying by using hoisting equipment and ensures the safety and reliability of the carrying process.

[0044] The shielding structure 11 is a semicircular structure, which is formed into a circular ring by splicing, and a plurality of slots are formed on the periphery for the fixed bolts 10 to pass through. The two semicircular structures are spliced together for easy installation.

[0045] Specifically, the connecting column 12 is provided with a key groove matched with the connecting key 6, which is used for the circumferential fixation and torque transmission between the connecting column 12 and the first gear 7.

[0046] The shielding structure 11 is arranged above the silk screen washer 5, which is used to limit the position of the silk screen washer 5. The silk screen washer 5 is fixed at the rotating shaft 4, which can effectively protect the silk screen washer 5 from external vibration or impact, prolong its service life and improve the reliability of the equipment.

[0047] Optionally, the material of the silk screen washer 5 can be woven copper strip or copper mesh. The woven copper strip and copper mesh are soft and flexible, which is convenient for construction and installation. The woven copper strip and copper mesh can effectively protect the equipment from lightning, electromagnetic interference and other factors, ensure the safe operation of electrical equipment, and improve the operation efficiency and service life of the equipment.

[0048] Working principle: by setting the wire mesh gasket 5 at the rotating shaft 4, and limiting the position of the wire mesh gasket 5 by the shielding structure 11, effectively reducing the electromagnetic wave emission of the speed reducer motor during work, controlling the electromagnetic interference at a low level by shielding, meeting the laboratory requirements under normal transmission, meeting the noise test requirements.

[0049] When the motor drives the gear transmission, the driving motor is directly connected with the speed reducer by metal physical connection, and the electromagnetic disturbance generated by the driving motor during work can be radiated outward through the interface gap of the speed reducer, so that it cannot meet the noise requirement during work, and the noise requirement cannot meet the standard, so the related radiation emission test cannot be carried out according to the standard. The shielding structure effectively reduces the electromagnetic interference during work, meets the noise requirement during darkroom test, and can effectively reduce the electromagnetic interference during motor work.

[0050] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A reduction motor for a darkroom turntable that meets the noise floor requirements, characterized in that: The invention comprises a reducer body (1), wherein the output end of the reducer body (1) is fixedly connected to a rotating shaft (4), a gear is sleeved on the outside of the rotating shaft (4), a wire mesh washer (5) is sleeved on the outer periphery of the rotating shaft (4) and the output shaft of the reducer body (1), a shielding structure (11) is provided between the gear and the wire mesh washer (5), and the shielding structure (11) is fixed on the reducer body (1).

2. A reduction motor for a darkroom turntable that meets the noise floor requirements according to claim 1, characterized in that: The shielding structure (11) is a circular ring structure, and the shielding structure (11) is sleeved on the outer circumference of the rotating shaft (4).

3. A reduction motor for a darkroom turntable that meets the noise floor requirements according to claim 1 or 2, characterized in that: The shielding structure (11) is provided with a plurality of bolt holes in the circumferential direction.

4. The reduction motor for a darkroom turntable that meets the noise floor requirements according to claim 1, characterized in that: A connecting key (6) is provided on the shaft wall of the rotating shaft (4), and a connecting column (12) is installed on the outer periphery of the rotating shaft (4) through the connecting key (6). The gear includes a first gear (7) and a second gear (8), and the upper end of the first gear (7) is fixedly connected to the second gear (8).

5. The reduction motor for a darkroom turntable that meets the noise floor requirement according to claim 4, characterized in that: The first gear (7) is mounted on the connecting column (12).

6. The reduction motor for a darkroom turntable that meets the noise floor requirement according to claim 4, characterized in that: A circular pad (9) is provided on the top of the rotating shaft (4) and inside the first gear (7).

7. The reduction motor for a darkroom turntable that meets the noise floor requirement according to claim 4, characterized in that: The connecting column (12) is a hollow structure, and a keyway is provided on the inner wall of the rotating shaft (4).

8. The reduction motor for a darkroom turntable that meets the noise floor requirement according to claim 1, characterized in that: A lifting ring (3) is installed on the reducer body (1).

9. The reduction motor for a darkroom turntable that meets the noise floor requirement according to claim 1, characterized in that: The diameter of the shielding structure (11) is greater than the diameter of the wire mesh gasket (5).

10. A reduction motor for a darkroom turntable that meets the noise floor requirements according to claim 1 or 9, characterized in that: The wire mesh gasket (5) is a braided copper tape or a copper mesh.

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