Permanent magnet roller all-in-one machine

Abstract

The invention relates to the technical field of permanent magnet roller all-in-one machine structures, in particular to a permanent magnet roller all-in-one machine which comprises a roller assembly, the roller assembly comprises a side disc plate, a roller body is installed on the inner side of the side disc plate, the side disc plate is fixed to the surface of a permanent magnet motor set, and the permanent magnet motor set comprises a rotating shaft. The permanent magnet motor set is arranged in the transmission roller to form an outer rotor structure, the space occupied by an original permanent magnet motor is saved, meanwhile, the frequency converter and the roller assembly are integrated, a main junction box, an auxiliary junction box, a power cable and a control cable of the original roller assembly are omitted, and a condenser pipe directly enters the frequency conversion assembly; the condenser pipe is placed in a heat dissipation cavity interlayer of the frequency converter and the original shell sleeve, the frequency converter is of a flat water cooling structure and is slightly wider than an original junction box, space is further saved, a power cable, a control cable and a water pipe between the original frequency converter and the motor are omitted, and the space occupation condition of equipment is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet roller integrated machine structures, and in particular to a permanent magnet roller integrated machine. Background Art

[0002] The belt conveyor in underground coal mines is one of the main equipment to ensure efficient production in coal mines. Its operation quality and reliability determine the efficiency of mine production and transportation and the benefits of coal mining enterprises.

[0003] The most commonly used belt conveyor drive equipment is a combination of frequency converter + asynchronous high-speed motor + reducer + transmission roller + cooling system. This form can meet the speed regulation requirements of the belt conveyor and has low cost, but the traditional asynchronous motor has low energy efficiency. In order to improve energy efficiency, a combination of frequency converter + permanent magnet high-speed motor + reducer + transmission roller + cooling system is derived. In this form, the energy transfer efficiency of the reducer is low, it is easy to leak oil, and maintenance is troublesome. In order to eliminate this fault point, the combination form is changed to frequency converter + permanent magnet direct drive motor + transmission roller + cooling system, but the above combination form occupies a large area. The structure of this type of conveyor is only suitable for coal mine transportation in open areas of large sites. It is troublesome to transport, install, and maintain certain narrow tunnels, which is not conducive to the transportation of mineral resources in narrow mines. Therefore, a permanent magnet roller integrated machine is needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A permanent magnet drum integrated machine comprises a drum assembly, the drum assembly comprises a side plate, a cylinder is installed on the inner side of the side plate, the side plate is fixed on the surface of a permanent magnet motor group, the permanent magnet motor group comprises a rotating shaft, a water outlet and a water inlet are provided on the right side of the rotating shaft, the two sides of the rotating shaft are rotatably connected with a support, a transition assembly is provided on the left side of the rotating shaft, a frequency conversion assembly is provided on the left side of the transition assembly, the frequency conversion assembly comprises a frequency converter, an original shell is connected to the outer side of the frequency converter, a heat dissipation assembly is provided on the top of the original shell, and a water outlet and a water inlet are provided on the right side of the rotating shaft, so that water-cooling liquid can enter the cylindrical water channel from the rotating shaft, so that the water-cooling liquid can flow around in the cylindrical water channel, and then the motor can be cooled.

[0006] Preferably, the cylinder includes a rotor, both sides of which are connected and fixed to the side disc plate by bolts, the outer side of the rotor is wrapped with liquid cylinder rubber, the inner wall of the rotor is surrounded by a permanent magnet, a cylindrical water channel is provided at the center position of the outer side of the rotating shaft, and a stator is provided around the outer side of the cylindrical water channel, a coil is wound around the outer side of the stator, the stator, the permanent magnet and the rotor cooperate to work to generate heat, and the cylindrical water channel design on the outer side of the rotating shaft can facilitate the water-cooling liquid to rest on the outer wall of the cylindrical water channel for cold and heat exchange operations.

[0007] Preferably, the cylindrical water channel consists of a ring pipe and a branch pipe. The interior of the cylindrical water channel is connected to the water outlet and the water inlet. The water-cooling liquid entering the water inlet is diverted through the branch pipe, and the water-cooling liquid in the branch pipe can flow in the ring pipe to improve the heat exchange effect.

[0008] Preferably, a heat dissipation cavity is opened between the inverter and the original shell, and a condenser is installed on the surface of the inverter. The surrounding structure design of the condenser can increase the flow path of the water-cooling liquid in the condenser, and improve the probability of surrounding heat exchange of the condenser. The surrounding design can increase the surface area of ​​the condenser, thereby improving the heat dissipation efficiency. A larger surface area means that more heat can be dissipated from the fluid, thereby improving the overall cooling effect of the inverter.

[0009] Preferably, a groove is provided at the top of the original shell, and a top cover is embedded in the groove. The side of the top cover is fixed to the original shell by a threaded pin. Rectangular fins are equidistantly connected to the top of the top cover. The top cover can be separated from the original shell by rotating and removing the threaded pin, which is convenient for staff to observe the status of the condenser and avoid rust and damage on the surface of the condenser, and is convenient for timely discovery and replacement of the condenser. Rectangular fins are arranged on the top of the top cover. The rectangular fins are arranged in a structural design to greatly increase the surface area in contact with the air, so that heat can be dissipated to the surrounding environment through conduction and convection.

[0010] Preferably, the heat dissipation component includes a heat dissipation fan, which is symmetrically connected to external plates on both sides, and the external plates are connected and fixed to the sides of the top cover through threaded columns. The heat dissipation fan can be installed on the surface of the rectangular fins by docking the external plates and the threaded columns. When the heat dissipation fan is started, the air flow rate in the rectangular fins can be accelerated, thereby improving the heat dissipation effect.

[0011] Preferably, a protective cover is mounted on the top of the cooling fan, and inclined air grooves are provided around the sides of the protective cover. The protective cover can protect the blades of the cooling fan to prevent the blades from being damaged by impact of coal crushing stones. At the same time, air grooves are provided on the outside of the protective cover to facilitate heat dissipation.

[0012] Preferably, the top of the protective cover is a curved convex structure, a guide groove is opened at the top of the protective cover, and air holes are opened equidistantly on the sides of the guide groove convex, and the air holes are located at the top of the sides of the guide groove of the protective cover to prevent accumulation and blockage. Some small particles of coal powder can be swept out by the wind blown out after the cooling fan is started during the falling process, which effectively prevents the air holes from being blocked.

[0013] Preferably, the transition assembly includes an external plate, a plate group is connected to the left side of the external plate, the plate group includes a shell plate, the shell plate is connected to the inner wall of the original shell sleeve by bolts, a cavity tube is connected to the right side of the shell plate, and the cavity tube is connected and fixed to the external plate by bolts, an annular groove is provided on the surface of the cavity tube, and arc fins are equidistantly arranged on the surface of the annular groove, the arc fins are fixed to the right side of the original shell sleeve, and a through groove compatible with the condenser is provided on the inner wall of the arc fin, which can facilitate the increase of the placement space for the condenser.

[0014] The present invention has at least the following beneficial effects: 1. By setting up the drum assembly and the frequency conversion assembly, the space occupation is reduced. Compared with the traditional structure, this device saves the space occupied by the original permanent magnet motor by placing the permanent magnet motor group inside the transmission drum to form an outer rotor structure. At the same time, the frequency converter and the drum assembly are made into an integrated type, eliminating the main terminal box and auxiliary terminal box of the original drum assembly. The power cable, control cable, and condenser are directly introduced into the frequency conversion assembly, so that the condenser is placed in the heat dissipation cavity sandwich between the frequency converter and the original shell. The frequency converter is made into a flat water-cooled structure, which is only slightly wider than the original terminal box, further saving space, and eliminating the power cable, control cable, and water pipe between the original frequency converter and the motor, effectively reducing the space occupation of the equipment, facilitating use in narrow mine caves during coal mining, meeting the coal transportation needs of narrow mine caves, improving practical value, saving energy loss in the transmission link, and reducing equipment failure points.

[0015] 2. By setting up the frequency conversion component, the heat dissipation effect of the frequency converter during operation is further improved. The device is provided with an opening at the top of the original shell, and a top cover is installed in the opening. The use status of the condenser can be checked at any time by opening the top cover to avoid damage to the pipeline and affect normal heat dissipation. At the same time, a threaded pin is provided on the top of the top cover to conduct the heat generated by the frequency converter when the equipment is running, accelerate the cooling effect of the heat dissipation cavity formed between the frequency converter and the original shell, improve the heat dissipation efficiency, and ensure long-term and efficient operation of the equipment.

[0016] 3. By setting up a heat dissipation component, the heat dissipation effect is further improved. The device sets threaded columns on the extended ends on both sides of the top cover. The heat dissipation fan can be installed through the cooperation of the threaded columns and the external plate, so that the heat dissipation fan can quickly discharge the heat conducted on the surface of the rectangular fins. At the same time, the protective cover design on the top of the heat dissipation fan can prevent coal powder from falling into the heat dissipation fan and affecting the normal operation of the heat dissipation fan. A guide groove is provided on the top of the protective cover, and an air hole is provided at the top of the guide groove. An inclined air groove is provided around the side of the protective cover, which can effectively prevent coal powder from obstructing the heat dissipation fan while ensuring air circulation and heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the external structure of a permanent magnet drum integrated machine proposed by the present invention; Figure 2 This is a schematic diagram of the internal structure of a permanent magnet drum integrated machine proposed by the present invention; Figure 3 This is a schematic diagram of a three-dimensional cross-section plan structure of a drum assembly in a permanent magnet drum integrated machine proposed by the present invention; Figure 4 This is a schematic diagram of the side planar structure of a support in a permanent magnet drum integrated machine proposed by the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of a cylindrical water channel in a permanent magnet drum integrated machine proposed by the present invention; Figure 6 This is a three-dimensional disassembled structural schematic diagram of a transition component and a frequency conversion component in a permanent magnet drum integrated machine proposed by the present invention; Figure 7 This is a schematic diagram of the three-dimensional disassembled structure of a middle plate group of a permanent magnet drum integrated machine proposed by the present invention; Figure 8 This is a three-dimensional disassembled structural schematic diagram of a frequency conversion component and a heat dissipation component in a permanent magnet drum integrated machine proposed by the present invention.

[0019] In the figure: 1. drum assembly; 11. side plate; 12. cylinder; 121. rotor; 122. liquid cylinder rubber coating; 13. permanent magnet motor group; 131. rotating shaft; 132. water outlet; 133. water inlet; 134. cylindrical water channel; 135. stator; 136. permanent magnet; 137. coil; 2. support; 3. transition assembly; 31. external disk; 32. plate group; 321. shell plate; 322. cavity tube; 323. arc fin; 4. frequency conversion assembly; 41. frequency converter; 42. original shell; 43. condenser; 44. top cover; 45. rectangular fin; 46. threaded pin; 5. heat dissipation assembly; 51. cooling fan; 52. external plate; 53. threaded column; 54. protective cover. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] Reference Figure 1-8 A permanent magnet drum integrated machine includes a drum assembly 1, the drum assembly 1 includes a side plate 11, a cylinder 12 is installed on the inner side of the side plate 11, the side plate 11 is fixed on the surface of a permanent magnet motor group 13, the permanent magnet motor group 13 includes a rotating shaft 131, a water outlet hole 132 and a water inlet hole 133 are opened on the right side of the rotating shaft 131, and the two sides of the rotating shaft 131 are rotatably connected to the support 2, a transition component 3 is arranged on the left side of the rotating shaft 131, and a frequency conversion component 4 is arranged on the left side of the transition component 3. The frequency conversion component 4 includes a frequency converter 41, and an original shell 42 is connected to the outer side of the frequency converter 41, and a heat dissipation component 5 is arranged on the top of the original shell 42.

[0022] The cylinder 12 includes a rotor 121, and both sides of the rotor 121 are connected and fixed to the side disc plate 11 by bolts. The outer side of the rotor 121 is wrapped with a liquid cylinder rubber bag 122, and a permanent magnet 136 is arranged around the inner wall of the rotor 121. A cylindrical water channel 134 is arranged at the center position of the outer side of the rotating shaft 131, and a stator 135 is arranged around the outer side of the cylindrical water channel 134, and a coil 137 is wound around the outer side of the stator 135.

[0023] The cylindrical water channel 134 is composed of a ring pipe and branch pipes, and the interior of the cylindrical water channel 134 is connected to and communicates with the water outlet 132 and the water inlet 133 .

[0024] A heat dissipation cavity is provided between the frequency converter 41 and the original shell 42 , and a condenser 43 is installed on the surface of the frequency converter 41 .

[0025] A slot is formed at the top of the original shell 42, and a top cover 44 is embedded in the slot. The side of the top cover 44 is fixed to the original shell 42 by a threaded pin 46, and rectangular fins 45 are equidistantly connected to the top of the top cover 44.

[0026] The heat dissipation assembly 5 includes a heat dissipation fan 51 , and external connection plates 52 are symmetrically connected to both sides of the heat dissipation fan 51 , and the external connection plates 52 are connected and fixed to the sides of the top cover 44 through threaded columns 53 .

[0027] A protective cover 54 is mounted on the top of the heat dissipation fan 51 , and an inclined air groove is formed around the side of the protective cover 54 .

[0028] The top of the protective cover 54 is a curved convex structure, a guide groove is provided at the top of the protective cover 54, and air holes are provided at equal intervals on the convex side of the guide groove.

[0029] The transition assembly 3 includes an external disk 31, a plate group 32 is connected to the left side of the external disk 31, the plate group 32 includes a shell plate 321, the shell plate 321 is connected to the inner wall of the original shell sleeve 42 by bolts, a cavity tube 322 is connected to the right side of the shell plate 321, and the cavity tube 322 is connected and fixed to the external disk 31 by bolts, an annular groove is opened on the surface of the cavity tube 322, and arc fins 323 are equidistantly arranged on the surface of the annular groove.

[0030] By opening a water outlet hole 132 and a water inlet hole 133 on the right side of the rotating shaft 131, the water-cooling liquid can enter the cylindrical water channel 134 from the rotating shaft 131, so that the water-cooling liquid can flow around in the cylindrical water channel 134, and then the motor can be cooled. The rotating shaft 131 can be supported by the support 2, which is convenient for suspending the side plate 11. Through the design of the transition component 3, the rotation heat dissipation path of the rotating shaft 131 can be extended, which is convenient for the auxiliary inverter 41 to dissipate heat and provide more heat dissipation space. The stator 135, the permanent magnet 136 and the rotor 121 work together to generate heat.

[0031] The cylindrical water channel 134 design on the outside of the rotating shaft 131 can facilitate the water-cooling liquid to rest on the outer wall of the cylindrical water channel 134 for hot and cold exchange operations. The water-cooling liquid entering the water inlet 133 is diverted through the branch pipe, and the water-cooling liquid in the branch pipe can flow in the ring pipe to improve the heat exchange effect. At the same time, the cylindrical water channel 134 with a larger circumference is designed to effectively expand the heat exchange area and ensure the heat exchange efficiency. The surrounding structure design of the condenser 43 can increase the flow path of the water-cooling liquid in the condenser 43 and increase the probability of surrounding heat exchange of the condenser 43. The surrounding design can increase the surface area of ​​the condenser 43, thereby improving the heat dissipation efficiency. A larger surface area means that more heat can be dissipated from the fluid, thereby improving the overall cooling effect of the inverter 41. Through the surrounding design, the heat can be more evenly distributed in a larger area to avoid local overheating, thereby protecting the inverter 41 and extending its service life.

[0032] At the same time, the surrounding design of the condenser 43 can adjust the shape and size as needed to adapt to the space limitations in the original shell 42 and the heat dissipation cavity of the inverter 41, making it flexible and allowing the condenser 43 to optimize the cooling effect within a limited space. The top cover 44 can be separated from the original shell 42 by rotating and removing the threaded pin 46, making it convenient for staff to observe the status of the condenser 43 and avoid rust and damage on the surface of the condenser 43, making it convenient to promptly discover and replace the condenser 43. A rectangular fin 45 is set on the top of the top cover 44.

[0033] The rectangular fins 45 are designed to have a greatly increased surface area in contact with the air through an arrangement structure, so that heat can be dissipated to the surrounding environment through conduction and convection. The design of the rectangular fins 45 increases the length and complexity of the air flow path, which can improve the heat dissipation rate of the air flow. When used with the cooling fan 51, the air flow can take away the heat more effectively. The cooling fan 51 can be installed on the surface of the rectangular fins 45 by connecting the external plate 52 with the threaded column 53. When the cooling fan 51 is started, the air flow rate in the rectangular fins 45 can be accelerated, thereby improving the heat dissipation effect, effectively reducing the suction effect of the hot air mass, and avoiding high-temperature damage to the equipment during long-term operation. The blades of the cooling fan 51 can be protected by the protective cover 54 to avoid impact damage to the blades caused by coal crushing stones. At the same time, an air groove is provided on the outside of the protective cover 54 to facilitate heat dissipation. The inclined design of the air groove can also prevent the entry of coal powder and coal blocks. The curved arc structure design at the top of the protective cover 54 can cooperate with the guide groove to guide the coal powder so that the coal powder can be discharged from both sides.

[0034] At the same time, the air holes are located at the top of the guide groove side of the protective cover 54, which can prevent accumulation and blockage. Some small particles of coal powder can be swept out by the wind blown out after the cooling fan 51 is started during the falling process, which effectively prevents the air holes from being blocked. The arc-shaped fin 323 is fixed to the right side of the original shell sleeve 42. The inner wall of the arc-shaped fin 323 is provided with a through groove that is compatible with the condenser 43, which can facilitate the placement space of the condenser 43. At the same time, an extended cavity is formed between the cavity tube 322 and the shell plate 321. The annular groove design on the outer side of the cavity tube 322 can make the outer wall thin-walled. The arc-shaped fin 323 design on the outer side of the cavity tube 322 can improve the hot air heat exchange effect of the extended cavity in the cavity tube 322.

[0035] Working principle: According to the attached Figure 2 , Attachment Figure 3 With attached Figure 4As shown, during use, the water-cooling liquid enters through the water inlet hole 133, is guided by the pipeline of the rotating shaft 131, and enters the cylindrical water channel 134 for circulation, thereby cooling the stator 135 inside. Part of the circulating water-cooling liquid enters the condenser 43 through the rotating shaft 131, and the water-cooling liquid guided by the condenser 43 flows out from the other end of the pipeline, and is finally discharged through the water outlet hole 132 at the end of the rotating shaft 131. The accessories such as the water pump, the radiator, and the water cooling head used for connection here are mature technologies and are not described in detail. Only the deformation of the shape of the condenser 43 is introduced to achieve circulation; Secondly, according to the attached Figure 3 As shown, the frequency converter 41 controls the speed of the motor by changing the output voltage and frequency. The synchronous speed of the motor can be calculated according to the number of pole pairs of the motor and the power supply frequency. The frequency converter changes the synchronous speed of the motor by adjusting the output frequency, thereby controlling the rotation of the rotor 121; Finally, according to the attached Figure 6 With attached Figure 8 As shown, during normal operation of the inverter 41, the heat of the inverter 41 can be dissipated under the flow of water-cooling liquid in the condenser 43, and the heat is stored in the heat dissipation cavity of the inverter 41 and the original shell 42. The heat in the heat dissipation cavity of the original shell 42 and the inverter 41 can be heat-conducted through the rectangular fins 45. The wind force after the cooling fan 51 is started can accelerate the air circulation rate. At the same time, the protective cover 54 can be buckled on the top of the cooling fan 51 to prevent coal mine debris from falling onto the blades of the cooling fan 51 and avoid damage to the blades.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A permanent magnet drum integrated machine, comprising a drum assembly (1), characterized in that: The drum assembly (1) comprises a side plate (11), a cylinder (12) is mounted on the inner side of the side plate (11), the side plate (11) is fixed on the surface of a permanent magnet motor group (13), the permanent magnet motor group (13) comprises a rotating shaft (131), a water outlet hole (132) and a water inlet hole (133) are provided on the right side of the rotating shaft (131), both sides of the rotating shaft (131) are rotatably connected to a support (2), a transition assembly (3) is arranged on the left side of the rotating shaft (131), a frequency conversion assembly (4) is arranged on the left side of the transition assembly (3), the frequency conversion assembly (4) comprises a frequency converter (41), an outer side of the frequency converter (41) is connected to an original shell (42), and a heat dissipation assembly (5) is arranged on the top of the original shell (42).

2. The permanent magnet drum integrated machine according to claim 1, characterized in that: The cylinder (12) comprises a rotor (121), both sides of the rotor (121) are connected and fixed to the side plate (11) by bolts, the outer side of the rotor (121) is wrapped with a liquid cylinder rubber coating (122), a permanent magnet (136) is arranged around the inner wall of the rotor (121), a cylindrical water channel (134) is arranged at the center position of the outer side of the rotating shaft (131), and a stator (135) is arranged around the outer side of the cylindrical water channel (134), and a coil (137) is wound around the outer side of the stator (135).

3. The permanent magnet drum integrated machine according to claim 2, characterized in that: The cylindrical water channel (134) is composed of a ring pipe and branch pipes, and the interior of the cylindrical water channel (134) is connected to and communicates with the water outlet hole (132) and the water inlet hole (133).

4. The permanent magnet drum integrated machine according to claim 1, characterized in that: A heat dissipation cavity is provided between the frequency converter (41) and the original shell (42), and a condenser tube (43) is installed on the surface of the frequency converter (41).

5. The permanent magnet drum integrated machine according to claim 1, characterized in that: The top of the original shell (42) is provided with a slot, and a top cover (44) is embedded in the slot. The side of the top cover (44) is fixedly connected to the original shell (42) by a threaded pin (46). The top of the top cover (44) is equidistantly connected with rectangular fins (45).

6. The permanent magnet drum integrated machine according to claim 1, characterized in that: The heat dissipation assembly (5) comprises a heat dissipation fan (51), and external plates (52) are symmetrically connected to both sides of the heat dissipation fan (51), and the external plates (52) are connected and fixed to the sides of the top cover (44) via threaded columns (53).

7. The permanent magnet drum integrated machine according to claim 6, characterized in that: A protective cover (54) is mounted and buckled on the top of the heat dissipation fan (51), and an inclined air groove is formed around the side of the protective cover (54).

8. The permanent magnet drum integrated machine according to claim 7, characterized in that: The top of the protective cover (54) is in the form of a curved arc-shaped raised structure, a guide groove is provided at the top of the protective cover (54), and air holes are provided at equal distances on the raised sides of the guide groove.

9. The permanent magnet drum integrated machine according to claim 1, characterized in that: The transition assembly (3) comprises an external plate (31), a plate group (32) is connected to the left side of the external plate (31), the plate group (32) comprises a shell plate (321), the shell plate (321) is butt-jointed with the inner wall of the original shell sleeve (42) by means of bolts, a cavity tube (322) is connected to the right side of the shell plate (321), and the cavity tube (322) is connected and fixed to the external plate (31) by means of bolts, an annular groove is provided on the surface of the cavity tube (322), and arc-shaped fins (323) are equidistantly arranged on the surface of the annular groove.

Images