Driving mechanism of grinding equipment

Abstract

The utility model discloses a driving mechanism of grinding equipment. The driving mechanism comprises a rack; the motor is internally provided with an output end, and the output end is connected with a connecting sleeve; and the bearing seat is connected to the rack, a transmission shaft is rotatably connected to the interior of the bearing seat, one end of the transmission shaft extends out of the bearing seat in the direction away from the motor, and the other end of the transmission shaft is in transmission connection to the interior of the connecting sleeve. And in addition, the power of the motor is directly output outwards through the transmission shaft, power conversion is reduced, therefore, power loss is reduced, and the grinding work efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a grinding device, in particular to a driving mechanism of a grinding device. Background Art

[0002] In grinding equipment, a grinding motor drives the grinding rotor to rotate within the grinding chamber, thereby grinding the material. Current grinding drive mechanisms typically utilize conventional transmission methods, such as belt drives, couplings, and reduction gearboxes. In these cases, the motor's power is largely converted into friction between the belt and pulley, reduction gearbox, or gears, resulting in energy waste. Furthermore, the motor requires internal bearings to stabilize the output shaft, making it difficult to disassemble and assemble the motor for maintenance. Therefore, current grinding machines urgently need a drive mechanism that reduces power output losses and facilitates maintenance. Utility Model Content

[0003] The purpose of the utility model is to provide a driving mechanism for grinding equipment to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution of the utility model to solve its technical problems is:

[0005] A grinding equipment drive mechanism includes: a frame; a motor, wherein the motor has an output end, and the output end is connected to a connecting sleeve; a bearing seat, which is connected to the frame, and a transmission shaft is rotatably connected to the bearing seat, one end of the transmission shaft extends out of the bearing seat in a direction away from the motor, and the other end of the transmission shaft is transmission-connected to the connecting sleeve.

[0006] This technical solution has at least the following beneficial effects: before use, one end of the transmission shaft extending from the bearing seat can be connected to the external grinding rotor. During operation, the output end of the motor drives the transmission shaft to rotate through the connecting sleeve, and the bearing seat is used to install and position the transmission shaft. Power is connected from one end of the transmission shaft, and power is output from the other end of the transmission shaft to the external grinding rotor, so as to better balance the load at the end of the transmission shaft. At this time, the number of bearings required for the motor can be reduced, and the bearing seat can be mainly used to stabilize the transmission shaft. This can reduce the workload of disassembling and assembling the motor during maintenance, improve the convenience of motor maintenance, and the power of the motor is directly output outward through the transmission shaft, reducing power conversion, thereby reducing power loss and improving grinding work efficiency.

[0007] As a further improvement to the above technical solution, the motor is a frameless direct-drive motor. Using a frameless direct-drive motor to provide power output reduces the risk of damage to the drive shaft at the motor location because the frameless permanent magnet direct-drive motor has no bearings inside. This further improves the ease of disassembly and maintenance of the motor. Furthermore, the reduction in bearings reduces installation costs.

[0008] As a further improvement to the above technical solution, a tapered channel with a gradually decreasing inner diameter as it moves away from the bearing seat is formed within the connecting sleeve. A tapered expansion sleeve is connected to the outer side of the end of the drive shaft and fits within the tapered channel. The drive shaft is tightly connected by the outer tapered surface of the tapered expansion sleeve and the inner tapered surface of the tapered channel inside the bearing seat, thereby achieving power transmission from the connecting sleeve to the drive shaft through the tapered expansion sleeve.

[0009] As a further improvement to the above technical solution, a gland is connected to the end of the connecting sleeve away from the bearing seat. Connecting bolts are inserted through the gland and connected to the tapered expansion sleeve. After the tapered expansion sleeve is mated and connected to the tapered channel, the connecting bolts are passed through the gland and connected to the tapered expansion sleeve. This further presses the tapered expansion sleeve against the inner wall of the tapered channel, creating a tighter connection between the two and improving the efficiency of power transmission from the connecting sleeve to the drive shaft.

[0010] As a further improvement to the above technical solution, a hole is provided in the middle of the gland. Heat generated by the drive shaft during operation can be conducted outward from the end of the drive shaft. The hole in the middle of the gland can accelerate the heat conduction outward from the drive shaft, thereby improving the stability of use.

[0011] As a further improvement to the above technical solution, a connecting screw is connected to the end of the drive shaft away from the bearing seat. The connecting screw protrudes from the drive shaft and is connected to a locking nut. The outer edge of the locking nut extends to the end face of the tapered expansion sleeve. The threads of the connecting screw connecting to the drive shaft and the threads of the connecting screw connecting to the locking nut have opposite spiral directions. The locking nut is connected to one end of the drive shaft via the connecting screw. Since the outer side of the locking nut extends to the end face of the tapered expansion sleeve, it can block the tapered expansion sleeve and prevent it from slipping outward from the end of the drive shaft, thereby further improving the stability of the connection between the drive shaft and the tapered expansion sleeve. In addition, the thread direction of the connecting screw connecting to the drive shaft is opposite to the thread direction of the connecting screw connecting to the locking nut. This can provide a reaction force when the motor is started or stopped, causing the locking nut to tighten with each rotation, thereby improving mechanical strength and achieving low inertia, tight control, and low noise.

[0012] As a further improvement to the above technical solution, an adjustment shim is provided between the bottom side of the bearing seat and the frame. During installation, the installation height of the bearing seat can be adjusted by replacing the adjustment shim with one of different thicknesses, thereby better matching the installation position of the bearing seat with the installation position of the motor.

[0013] As a further improvement to the above technical solution, a male stopper is provided on the side of the bearing seat facing the motor, and a female stopper is provided on the side of the motor facing the bearing seat, with the male stopper and the female stopper interfitting with each other. The interfitting of the male and female stoppers allows for quick alignment and connection of the motor and the bearing seat, improving overall installation efficiency and ensuring a tighter fit.

[0014] As a further improvement to the above technical solution, connecting bearings are provided between the drive shaft and the bearing seat on both sides. Two rotational connection points are formed between the drive shaft and the bearing seat, stably mounting the drive shaft within the bearing seat and effectively preventing the drive shaft from shaking during operation. This arrangement primarily relies on the bearing seat to position the drive shaft, reducing the number of additional bearings required at the motor.

[0015] As a further improvement to the above technical solution, a connecting flange is connected to the side of the bearing seat away from the motor. The connecting flange can be used to quickly connect with external equipment, such as a grinding drum, thereby improving overall installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief description of the drawings required for describing the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of them. Those skilled in the art can also derive other design solutions and drawings based on these drawings without inventive effort.

[0017] Figure 1 It is an overall top view of the utility model.

[0018] Figure 2 yes Figure 1 AA cross-sectional structure diagram.

[0019] Figure 3 yes Figure 2 B is a partial enlarged schematic diagram.

[0020] In the attached figure: 1-frame, 2-motor, 21-connecting sleeve, 3-bearing seat, 31-drive shaft, 32-conical expansion sleeve, 33-pressure cover, 34-connecting bolt, 35-connecting screw, 36-locking nut, 37-convex stopper, 38-connecting bearing, 39-connecting flange, 4-adjusting gasket. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connecting accessories according to the specific implementation situation. The various technical features in the invention can be combined interactively without conflicting with each other.

[0022] Reference Figure 1 and Figure 2 A grinding equipment driving mechanism includes: a frame 1; a motor 2, a stator and a rotor are provided in the motor 2, the rotor rotates in the stator, the motor 2 has an output end, the output end is also the rotor, and the output end is connected to a connecting sleeve 21; a bearing seat 3, which is connected to the frame 1, and a transmission shaft 31 is rotatably connected in the bearing seat 3, one end of the transmission shaft 31 extends out of the bearing seat 3 in a direction away from the motor 2, and the other end of the transmission shaft 31 is transmission-connected to the connecting sleeve 21.

[0023] In this grinding equipment driving mechanism, before use, the transmission shaft 31 can be extended out of one end of the bearing seat 3 and connected to the external grinding rotor. During operation, the output end of the motor 2 drives the transmission shaft 31 to rotate through the connecting sleeve 21, and the bearing seat 3 is used to install and position the transmission shaft 31. Power is connected from one end of the transmission shaft 31, and power is output from the other end of the transmission shaft 31 to the external grinding rotor, so as to better balance the load at the end of the transmission shaft 31. At this time, the number of bearings required for the motor 2 can be reduced, and the bearing seat 3 can be mainly used to stabilize the transmission shaft 31. This can reduce the workload of disassembling and assembling the motor 2 during maintenance, improve the convenience of maintenance of the motor 2, and the power of the motor 2 is directly output to the outside through the transmission shaft 31, reducing power conversion, thereby reducing power loss and improving grinding work efficiency.

[0024] There are many types of motors 2. To facilitate disassembly and assembly of the motor 2, it is necessary to reduce the number of bearings disposed between the motor 2 and the drive shaft 31. In this embodiment, the motor 2 is a frameless direct-drive motor 2. Utilizing the frameless direct-drive motor 2 to provide power output reduces the risk of damage to the drive shaft 31 at the motor 2 location, as the frameless permanent magnet direct-drive motor 2 has no bearings inside. This further improves the convenience of disassembly and assembly and maintenance of the motor 2. Furthermore, the reduction in bearings saves installation costs.

[0025] The transmission shaft 31 and the connecting sleeve 21 can be directly connected to each other through the hole-shaft fit, and in order to ensure the coaxiality between the connecting sleeve 21 and the transmission shaft 31, as shown in FIG. Figure 3 As shown, in this embodiment, a tapered channel is formed within the connecting sleeve 21, with its inner diameter gradually decreasing as it moves away from the bearing seat 3. A tapered expansion sleeve 32 is connected to the outer side of the end of the drive shaft 31 and fits within the tapered channel. A connecting key may be provided between the drive shaft 31 and the tapered expansion sleeve 32 to ensure synchronous rotation of the tapered expansion sleeve 32 and the drive shaft 31. The outer tapered surface of the tapered expansion sleeve 32 mates with the inner tapered surface of the tapered channel inside the bearing seat 3, tightly connecting the two and thus achieving power transmission from the connecting sleeve 21 to the drive shaft 31 through the tapered expansion sleeve 32.

[0026] To further strengthen the synchronous connection between the connecting sleeve 21 and the drive shaft 31, in this embodiment, a gland 33 is connected to the end of the connecting sleeve 21 away from the bearing seat 3. Connecting bolts 34 are inserted through the gland 33 and connected to the tapered expansion sleeve 32. After the tapered expansion sleeve 32 is mated and connected to the tapered channel, the connecting bolts 34 are passed through the gland 33 and connected to the tapered expansion sleeve 32. This further presses the tapered expansion sleeve 32 against the inner wall of the tapered channel, creating a tighter connection between the two and improving the efficiency of power transmission from the connecting sleeve 21 to the drive shaft 31.

[0027] Furthermore, the end of the transmission shaft 31 away from the bearing seat 3 is connected to a connecting screw 35, the connecting screw 35 protrudes from the transmission shaft 31 and is connected to a locking nut 36, the outer edge of the locking nut 36 extends to the end face of the conical expansion sleeve 32, and the thread of the connecting screw 35 connected to the transmission shaft 31 is opposite to the spiral direction of the thread of the connecting screw 35 connected to the locking nut 36. The locking nut 36 is connected to one end of the drive shaft 31 through the connecting screw 35. Since the outer side of the locking nut 36 extends to the end face of the tapered expansion sleeve 32, the tapered expansion sleeve 32 can be blocked to prevent the tapered expansion sleeve 32 from falling out of the end of the drive shaft 31, thereby further improving the stability of the connection between the drive shaft 31 and the tapered expansion sleeve 32. The thread direction of the connecting screw 35 connected to the drive shaft 31 is opposite to the thread direction of the connecting screw 35 connected to the locking nut 36, which can provide a reaction force when the motor 2 starts or stops, so that the locking nut 36 becomes tighter and tighter, thereby improving mechanical strength and meeting low inertia, tight control and low noise.

[0028] In some embodiments, a hole is provided in the middle of the gland 33. The heat generated by the transmission shaft 31 during operation can be conducted outward from the end of the transmission shaft 31. The hole in the middle of the gland 33 can accelerate the heat conduction outward from the transmission shaft 31 and improve the stability of use.

[0029] In some embodiments, an adjustment spacer 4 is provided between the bottom side of the bearing seat 3 and the frame 1. During installation, the installation height of the bearing seat 3 can be adjusted by replacing the adjustment spacer 4 with one of different thicknesses, thereby better matching the installation position of the bearing seat 3 with the installation position of the motor 2.

[0030] To facilitate the connection between the bearing seat 3 and the motor 2, in this embodiment, a male stop 37 is provided on the side of the bearing seat 3 facing the motor 2, and a female stop is provided on the side of the motor 2 facing the bearing seat 3. The male stop 37 and the female stop are mutually engaged. In actual application, the female stop is formed on the housing of the motor 2, which is convenient for production. The interaction between the male stop 37 and the female stop allows the motor 2 and the bearing seat 3 to be quickly connected and aligned, improving overall installation efficiency and making the mutual engagement between the two more compact.

[0031] The transmission shaft 31 is primarily positioned by the bearing block 3. To enhance the positioning of the transmission shaft 31, in this embodiment, connecting bearings 38 are provided between the transmission shaft 31 and the bearing block 3 on both sides. Two rotational connection points are formed between the transmission shaft 31 and the bearing block 3, allowing the transmission shaft 31 to be stably mounted within the bearing block 3, effectively preventing the transmission shaft 31 from shaking during operation. This arrangement primarily relies on the bearing block 3 to position the transmission shaft 31, reducing the number of additional bearings required on the motor 2.

[0032] In some embodiments, a connecting flange 39 is connected to the side of the bearing seat 3 away from the motor 2. The connecting flange 39 can be used to quickly connect with external equipment, such as a grinding cylinder, to improve overall installation efficiency.

[0033] The above specifically describes the preferred embodiments of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A grinding equipment drive mechanism, characterized in that: include: Rack (1); A motor (2), wherein the motor (2) has an output end, and the output end is connected to a connecting sleeve (21); A bearing seat (3) is connected to the frame (1), and a transmission shaft (31) is rotatably connected in the bearing seat (3), one end of the transmission shaft (31) extends out of the bearing seat (3) in a direction away from the motor (2), and the other end of the transmission shaft (31) is transmission-connected in the connecting sleeve (21).

2. A grinding equipment driving mechanism according to claim 1, characterized in that: The motor (2) is a frameless direct-drive motor (2).

3. A grinding equipment driving mechanism according to claim 1, characterized in that: A tapered channel with an inner diameter gradually decreasing in a direction away from the bearing seat (3) is formed in the connecting sleeve (21), and a tapered expansion sleeve (32) is connected to the outer side of the end of the transmission shaft (31), and the tapered expansion sleeve (32) is fitted and connected in the tapered channel.

4. A grinding equipment driving mechanism according to claim 3, characterized in that: One end of the connecting sleeve (21) away from the bearing seat (3) is connected to a pressure cover (33), and a connecting bolt (34) is passed through the pressure cover (33), and the connecting bolt (34) is connected to the conical expansion sleeve (32).

5. A grinding equipment driving mechanism according to claim 4, characterized in that: A hole is provided in the middle of the gland (33).

6. A grinding equipment driving mechanism according to claim 3, characterized in that: The transmission shaft (31) is connected to an end thereof away from the bearing seat (3) with a connecting screw (35), the connecting screw (35) protruding from the transmission shaft (31) and connected to a locking nut (36), the outer edge of the locking nut (36) extending to the end face of the conical expansion sleeve (32), the thread of the connecting screw (35) connected to the transmission shaft (31) and the thread of the connecting screw (35) connected to the locking nut (36) having opposite spiral directions.

7. A grinding equipment driving mechanism according to claim 1, characterized in that: An adjusting gasket (4) is provided between the bottom side of the bearing seat (3) and the frame (1).

8. The driving mechanism of a grinding device according to claim 1, characterized in that: A convex stop (37) is provided on the side of the bearing seat (3) facing the motor (2), and a concave stop is provided on the side of the motor (2) facing the bearing seat (3), and the convex stop (37) and the concave stop are connected to each other.

9. The driving mechanism of a grinding device according to claim 1, characterized in that: Connecting bearings (38) are provided between the two sides of the bearing seat (3) and the transmission shaft (31).

10. The driving mechanism of a grinding device according to claim 1, characterized in that: A connecting flange (39) is connected to the side of the bearing seat (3) away from the motor (2).

Images