Reinforced waterproof and anti-blocking easy-to-maintain direct-drive grinding head motor

Abstract

The utility model discloses a reinforced waterproof anti-blocking easy-to-maintain direct-drive grinding head motor, which comprises a motor, a main shaft rotatably mounted in the motor, a front cover mounted at the front end of the motor, a detachable gland shell hermetically mounted at the front end of the front cover, and a first oil seal fixedly sleeved at the front end of the main shaft, a grinding wheel seat is detachably and fixedly sleeved on the main shaft at the front end of the first oil seal, a fly water cover is in sealed threaded connection with the outer circle of the grinding wheel seat, the rear end of the fly water cover is rotatably sleeved on the outer wall of the front end of the gland shell, and a nut mounting hole is axially formed in the front end of the grinding wheel seat; an end face nut and a second oil seal are fixed to the portion, located in the nut installation hole, of the main shaft in a sleeved mode, an annular groove is formed in the outer wall of the front end of a grinding wheel base located in the gland shell, and a third oil seal is installed between the grinding wheel base and the end face of the gland shell. According to the utility model, the waterproof performance can be improved, the fly water cover is prevented or reduced from being blocked, and the mounting, dismounting and maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a direct-drive grinding head motor with enhanced waterproofness, anti-jamming and easy maintenance. Background Art

[0002] At present, the direct-drive grinding head motors in the industry are designed to integrate the grinding wheel seat and the water-flying cover, and a maze structure is set on the end face of the front cover casting and the water-flying cover, and then the integrated water-flying cover is hot-fitted onto the rotating shaft.

[0003] Utility Model No. CN 208797761 U discloses a motor with manually adjustable output shaft axial feed, and Utility Model No. CN 218387047 U discloses a motor with shaft hole ventilation protection. In both applications, the rotational slit is located in the middle of the motor's front cover. When the motor drives the grinding wheel, splashed gourd easily enters the front cover labyrinth and sealing chamber through this slit. Furthermore, the gourd cannot escape unless it is protected by a skeleton oil seal within the front cover.

[0004] Existing direct-drive grinding head motors, due to structural design deficiencies, can cause accumulated glass powder to clog the labyrinth of the water-flying cover and front cover, as well as other rotating gaps. This leads to chemical reactions, crystallization, and rust, rendering the motor inoperable. Disassembly and cleaning can only be done with specialized puller tools or through brute force, making quick repair impossible. Furthermore, the glass powder can cause the oil seal rubber to harden and fail, leading to water ingress and burnout of the motor, resulting in significant downtime and production losses for the user. Utility Model Content

[0005] In order to overcome at least one of the technical problems existing in the prior art, the utility model provides a direct-drive grinding head motor with enhanced waterproofness, anti-jamming and easy maintenance, which can improve waterproof performance, avoid or reduce the jamming of the water cover, and is easy to install, disassemble and maintain.

[0006] The cam is secured to the front of the motor with a spring which is secured to the cam face and is designed to engage with the drive shaft of the motor when the cam is engaged.

[0007] In some embodiments, an annular groove is opened on the front end surface of the front cover, an O-ring is installed in the annular groove, multiple screw parts connect and fix the front cover and the gland shell, and the O-ring seals the gap between the front cover and the gland shell.

[0008] In some embodiments, the front end of the gland shell is a trumpet hole, at least one drainage hole is radially opened at the front end of the gland shell, and a sealing plug is installed in the drainage hole.

[0009] In some embodiments, an inclined and annular drainage groove is provided on the outer wall of the gland housing.

[0010] In some embodiments, the front end of the main shaft is conical, and a conical hole connected to the nut mounting hole is opened in the grinding wheel seat. The front end of the main shaft is inserted into the conical hole, and the conical surfaces between the two are matched.

[0011] In some embodiments, a set screw is radially screwed between the water-flying cover and the grinding wheel seat.

[0012] Additional aspects and advantages of the present invention will continue to be given in the following description, and some will become obvious from the following description or be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0014] Figure 1 This is a schematic diagram of the main plan structure of this application;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the present application when viewed from above;

[0016] Figure 3 yes Figure 2 Schematic diagram of the local split structure;

[0017] Figure 4 yes Figure 1 Schematic diagram of the cross-section structure after removing the water-flying cover;

[0018] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0019] Figure 6 It is a top-down perspective structural diagram of the present application;

[0020] Figure 7 yes Figure 6 Schematic diagram of the split structure at B in the figure. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside", are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0023] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0024] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] Reference Figure 1-Figure 7, a direct-drive grinding head motor with enhanced waterproof, anti-jamming and easy maintenance, including a motor 1, a main shaft 2 rotatably installed in the motor 1, a front cover 3 installed at the front end of the motor 1, a detachable pressure cover shell 4 is sealed and installed at the front end of the front cover 3, and the front cover 3 and the pressure cover shell 4 are both hollow cylinders with openings at both ends; a first oil seal 5 is fixed to the front end of the main shaft 2, which is a reverse oil seal, and a grinding wheel seat 6 is detachably fixed to the main shaft 2 located at the front end of the first oil seal 5, and a water-flying cover 7 is sealed and threaded on the outer circle of the grinding wheel seat 6, which is annular; the rear end of the water-flying cover 7 can be rotatably sleeved on the front end outer wall of the pressure cover shell 4 to reduce the entry of liquid and dust; the concave hole opened at the front end of the grinding wheel seat 6 can be used to position the grinding wheel, and the grinding wheel can be moved by The bolts are fixed to the front end face of the grinding wheel seat 6; an annular gap 8 is formed between the water-flying cover 7 and the pressure cover housing 4, and the water-flying cover 7 and the grinding wheel seat 6 can rotate synchronously with the main shaft 2. A nut mounting hole 9 is opened axially at the front end of the grinding wheel seat 6, and an end face nut 10 and a second oil seal 11 are fixed on the main shaft 2 located in the nut mounting hole 9. The second oil seal 11 is a skeleton oil seal; the end face nut 10 is threadedly connected and fastened to the main shaft 2, and at the same time locks the grinding wheel seat 6 and the main shaft 2 together, and the second oil seal 11 is sealed and fixed to the front end of the end face nut 10; an annular groove 12 is opened on the front end outer wall of the grinding wheel seat 6 located in the pressure cover housing 4, and a third oil seal 13 is installed between the grinding wheel seat 6 and the end face of the pressure cover housing 4 for waterproofing.

[0026] When in use, the direct-drive grinding head motor 1 is mostly installed horizontally, with the main shaft 2 parallel to the horizontal plane. The main shaft 2 drives the grinding wheel seat 6 and the grinding tool installed on the front end surface of the grinding wheel seat 6 to rotate, so as to process the workpiece. Because the pressure cover shell 4 and the front cover 3 are sealed and fixed, liquid cannot enter the interior of the motor 1 from the connection between the two; a part of the liquid and dust generated during processing will enter along the gap 8 between the pressure cover shell 4 and the water-flying cover 7, while most of the liquid and dust will be gathered in the annular groove 12 on the front end outer wall of the grinding wheel seat 6, and then freely fall to the inclined inner wall set on the pressure cover shell 4, and the liquid and dust will flow out through the drainage hole; the first oil seal 5, the second oil seal 11, and the third oil seal 13 of the present application can play a multiple protection role to avoid or reduce the entry of liquid and dust.

[0027] In some embodiments, an annular groove 14 is provided on the front end face of the front cover 3, an O-ring 15 is installed in the annular groove 14, and a plurality of regularly distributed screw connectors 16 connect and fix the front cover 3 to the pressure cover housing 4. The screw connectors 16 are preferably countersunk screws, and the O-ring 15 is pressed tightly. The O-ring 15 seals the gap between the front cover 3 and the pressure cover housing 4 to prevent liquid and dust from entering the interior of the motor 1, thereby improving the sealing performance.

[0028] In some embodiments, the front end of the pressure cover shell 4 is a trumpet hole, and at least one drainage hole 17 is radially opened at the front end of the pressure cover shell 4. The trumpet hole facilitates the liquid and dust gathered in the annular groove 12 of the grinding wheel seat 6 and the V-shaped groove 18 of the third oil seal 13 to be drained to the drainage hole 17 for automatic outflow; the drainage holes 17 are preferably two symmetrically arranged or three evenly distributed. When installing the pressure cover, one of the drainage holes 17 is placed closest to the ground to facilitate the outflow of liquid and dust. A sealing plug 19 is installed in each drainage hole 17, preferably a rubber sealing plug. After removing the sealing plug 19, it can be used to drain water and dust and other debris; multiple regularly arranged drainage holes 17 can be suitable for angle changes during installation of the motor 1, and are flexible and convenient to use.

[0029] In some embodiments, a slope 20 and an annular drainage groove 21 are provided on the outer wall of the gland housing 4 , which can guide liquid and dust to slide down the drainage groove 21 to the ground, avoiding accumulation and getting stuck in the gap 8 .

[0030] In some embodiments, the front end of the spindle 2 is conical, and a conical hole 22 connected to the nut mounting hole 9 is opened in the grinding wheel seat 6. The aperture of the conical hole 22 is smaller than the aperture of the nut mounting hole 9. The front end of the spindle 2 is inserted into the conical hole 22, and the conical surfaces between the two are matched; in the process of tightening the end face nut 10 on the spindle 2, the grinding wheel seat 6 and the front end of the spindle 2 will be gradually fastened, and installation and disassembly are convenient and quick; keyways 23 and positioning keys 24 are correspondingly provided on the grinding wheel seat 6 and the spindle 2 to prevent the grinding wheel seat 6 from slipping during rotation.

[0031] In some embodiments, a set screw 25 is radially screwed between the water-flying cover 7 and the grinding wheel seat 6. Preferably, there are two symmetrically arranged setscrews, or multiple setscrews evenly distributed setscrews. The set screw 25 can prevent the water-flying cover 7 and the grinding wheel seat 6 from loosening, thereby improving the firmness of the connection between the two.

[0032] The present application moves the rotation gap 8 of the grinding wheel seat 6 forward to the maximum extent, and installs a water-flying cover 7 covering the front end of the gland shell 4 on the grinding wheel seat 6 to enhance the waterproof effect. A drainage groove 21 is provided on the outer wall of the front cover 3 and the gland shell 4, and the front end of the gland shell 4 is designed as a trumpet hole. A drainage hole 17 is provided on the front end side wall of the gland shell 4, and an annular slope 20 and a groove are provided on the front end outer wall of the gland shell 4. The above structure can guide most of the glass water powder away from the gap 8 to the greatest extent; the O-ring 15 and the third oil seal 13 are designed as V-shaped end face oil seals to replace the maze structure that is easy to get stuck, and increase the powder storage space. The cavity prolongs the durability and can also prevent water powder from entering and seals the countersunk screws inside the gland shell 4 to prevent rust; it is convenient for subsequent maintenance and disassembly; when glass powder gets stuck, since this motor 1 is horizontally installed on a machine in a narrow space, it is not easy to disassemble the motor for cleaning. In this application, it is only necessary to loosen the positioning screw and screw out the water cover 7, and then simply use a hand drill to clamp the cylindrical serrated drill tool to quickly clean the glass powder in the rotating gap 8 between the gland shell 4 and the grinding wheel seat 6; when the grinding wheel seat 6 needs to be disassembled, a screw with a nominal length greater than 30 mm can be screwed into the top removal hole set on the end face to push it out, and disassembly is simpler and more convenient.

[0033] This application utilizes a skeleton oil seal, a V-shaped end face oil seal, and an inverted oil seal. Most of the glass powder first flows away from the slope 20 and drainage groove 21 provided on the outside of the gland housing 4. A small amount flows through the gap 8 into the radial annular groove of the gland housing 4. It then freely descends along the sloped inner wall of the gland housing 4 and is discharged from the drainage hole 17 at the bottom. As the V-shaped end face oil seal gradually fails, the glass powder will enter and remain deposited in the cavity inside the gland housing 4. However, the inverted oil seal installed inside the housing achieves a deformation-sealing effect through a tight fit and compression. The inverted oil seal becomes the last line of defense, protecting the bearings and coils from glass powder erosion. This application can greatly enhance the waterproof performance of the motor and extend its service life.

[0034] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although the embodiments of the present invention have been shown and described, ordinary technicians in this field can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A direct-drive grinding head motor with enhanced waterproofing, anti-jamming, and easy maintenance, comprising a motor, a spindle rotatably mounted within the motor, and a front cover mounted at the front end of the motor, characterized by: A detachable pressure cover shell is sealed and installed at the front end of the front cover, a first oil seal is sleeved and fixed on the front end of the main shaft, a grinding wheel seat is detachably sleeved and fixed on the main shaft at the front end of the first oil seal, a water-flying cover is threadedly connected and sealed on the outer circle of the grinding wheel seat, the rear end of the water-flying cover is rotatably sleeved on the front end outer wall of the pressure cover shell, an annular gap is formed between the water-flying cover and the pressure cover shell, the water-flying cover and the grinding wheel seat can rotate synchronously with the main shaft, a nut mounting hole is axially opened at the front end of the grinding wheel seat, an end face nut and a second oil seal are sleeved and fixed on the main shaft located in the nut mounting hole, an annular groove is opened on the front end outer wall of the grinding wheel seat located in the pressure cover shell, and a third oil seal is installed between the grinding wheel seat and the end face of the pressure cover shell.

2. The direct-drive grinding head motor with enhanced waterproofness, anti-jamming and easy maintenance as claimed in claim 1 is characterized by: An annular groove is provided on the front end surface of the front cover, an O-ring is installed in the annular groove, a plurality of screw connections connect and fix the front cover and the gland shell, and the O-ring seals the gap between the front cover and the gland shell.

3. The direct-drive grinding head motor with enhanced waterproofness, anti-jamming and easy maintenance as claimed in claim 1 or 2, characterized in that: The front end of the gland shell is a trumpet hole. At least one drainage hole is radially opened at the front end of the gland shell, and a sealing plug is installed in the drainage hole.

4. The direct-drive grinding head motor with enhanced waterproofness, anti-jamming and easy maintenance as claimed in claim 3 is characterized by: An inclined and annular drainage groove is provided on the outer wall of the gland shell.

5. The direct-drive grinding head motor with enhanced waterproofness, anti-jamming and easy maintenance as claimed in claim 1 is characterized by: The front end of the main shaft is conical, and a conical hole connected with the nut mounting hole is opened in the grinding wheel seat. The front end of the main shaft is inserted into the conical hole, and the conical surfaces between the two are matched.

6. The direct-drive grinding head motor with enhanced waterproofness, anti-jamming and easy maintenance as claimed in claim 5 is characterized by: A set screw is screwed radially between the water-flying cover and the grinding wheel seat.

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