An explosion-proof type permanent magnet synchronous variable frequency speed regulation all-in-one machine for monorail crane

Abstract

This invention discloses an explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail cranes, comprising a motor, an explosion-proof variable frequency enclosure, and a heat sink. The explosion-proof variable frequency enclosure includes independent and isolated wiring areas and equipment arrangement areas. Multiple wiring devices are provided on the side walls of the enclosure corresponding to the wiring areas. A wall-mounted device connects the wiring areas and the equipment arrangement areas. The frequency converter is arranged within the equipment arrangement area. The motor is fixed to the front outer wall of the explosion-proof variable frequency enclosure. The motor's control cable is connected to the wiring area via the wiring devices and then to the frequency converter via the wall-mounted device. The heat sink is fixed to the front outer wall of the explosion-proof variable frequency enclosure corresponding to the equipment arrangement area. This invention's explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail cranes has a reasonable structural design. Through its highly integrated design, it reduces the footprint, improves system reliability, saves energy, and has good application prospects.

Description

Technical Field

[0001] This invention relates to the field of mining equipment technology, and specifically to an explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail cranes. Background Technology

[0002] Currently, most monorail cranes on the market use explosion-proof diesel engines as their power source and are hydraulically driven, which generally has some problems: 1) In terms of power and drive, traditional induction or hydraulic traction motors have poor operational stability and are difficult to maintain, making them unsuitable for current needs; 2) If the hydraulic components of the engine of an explosion-proof diesel monorail crane have problems or are used improperly, issues such as oil leaks, excessive noise, and high costs may occur, which not only reduce vehicle performance but also damage the crane and threaten driver safety; 3) In terms of flexibility, long-rope traction monorail cranes, due to the use of traction winches, fail to fully utilize the advantages of multiple turnouts. The advantages of monorails, such as their ability to overcome obstacles and their long distances, as well as their flexibility in application, are limited in practical use; 4) In terms of braking, monorails lack a reliable braking system during use. When lifting or hoisting materials in inclined roadways, if the working brake fails or cannot be activated in time, the locomotive will slide or slide down due to the lack of braking torque; 5) The diesel engine of monorails is started by using a hand pump and control pump that share both air and hydraulic power, which can easily lead to errors during operation by workers; 6) In deep mines, the roadway deformation is large, the transportation line is longer, and the slope is steeper, which increases the difficulty of managing monorails and reduces the safety factor.

[0003] Therefore, developing an explosion-proof speed controller for monorails that is safe, can achieve frequency conversion to save energy and reduce emissions, and has low energy loss is of great practical significance. Summary of the Invention

[0004] Due to the aforementioned deficiencies in existing technologies, this invention provides a safe, energy-saving, and low-energy-loss explosion-proof speed controller for monorail cranes. Specifically, it is an explosion-proof permanent magnet synchronous variable frequency speed controller integrated with a monorail crane, which integrates the frequency converter and the motor. In terms of safety, it employs explosion-proof technology (explosion-proof enclosure), effectively preventing accidents such as fires and explosions caused by electrical faults, thus ensuring coal mine production safety. This is of great significance for reducing coal mine accidents and protecting workers' lives and company property. Regarding energy saving and consumption reduction, with the development of variable frequency technology, this integrated machine can precisely control the motor speed and output power. This technology avoids unnecessary energy waste, reduces enterprise production costs, and aligns with current requirements for green development and energy conservation and emission reduction. In terms of performance improvement, variable frequency starting enables motors to achieve better starting performance. The integrated design reduces problems caused by long cables between traditional frequency converters and motors, such as signal interference and energy loss. Simultaneously, a superior heat dissipation structure improves the stability of the frequency converter. Furthermore, a black box function can be added within the control system to facilitate monitoring of equipment operating status and fault diagnosis. Regarding application expansion, in addition to the coal mining industry, it is expected to be widely used in the machinery and equipment control fields of other industries in the future, promoting technological progress and development in related sectors.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail hoists includes a motor, a variable frequency explosion-proof enclosure, and a heat sink;

[0007] The variable frequency explosion-proof enclosure includes a wiring area and an equipment arrangement area that are independent and isolated from each other. Multiple wiring devices are provided on the side wall of the variable frequency explosion-proof enclosure corresponding to the wiring area. A wall-mounted device is provided between the wiring area and the equipment arrangement area to connect the wiring area and the equipment arrangement area. A frequency converter is arranged in the equipment arrangement area.

[0008] The motor is fixed on the front outer wall of the frequency converter explosion-proof enclosure. The control cable of the motor is connected to the wiring area through the wiring device and then connected to the frequency converter through the wall-mounting device. The heat sink is fixed on the front outer wall of the frequency converter explosion-proof enclosure in the corresponding equipment layout area.

[0009] This invention relates to an explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail cranes. It features a rational structural design, employing a highly integrated design concept that organically integrates the frequency converter and motor into a compact whole. Through optimized structural design, it significantly reduces the large number of cables and complex interfaces required for traditional connections between the frequency converter and motor, making the electrical connection between the two more secure and direct. (Furthermore, the signal transmission path can be shortened by integrating the frequency converter's control circuit, power circuit, etc., with the motor's winding circuit on the same circuit board, reducing signal interference and energy loss.) The modular design functionally divides the explosion-proof enclosure, facilitating electrical connections and signal transmission between modules, as well as heat dissipation and maintenance. Simultaneously, the entire integrated machine is encapsulated within a high-strength explosion-proof shell made of high-strength materials such as cast iron and cast steel, effectively preventing sparks and arcs from internal electrical components from igniting external explosive gases, thus meeting explosion-proof requirements and demonstrating promising application prospects.

[0010] The integrated design has several significant benefits for improving the performance of the explosion-proof variable frequency speed control integrated machine for monorail hoists in this application: 1) Reduced footprint: By integrating the frequency converter and motor together, the space occupied by each component in the traditional separate design is avoided, resulting in a significant reduction in the overall size of the integrated machine. In space-constrained working environments such as underground coal mines, the smaller footprint allows for easier installation and layout of the equipment, improving space utilization. According to actual application data, compared with the traditional separate frequency converter and motor combination, the footprint of the explosion-proof variable frequency speed control integrated machine for monorail hoists can be reduced by approximately 30% to 50%, which is of great significance for optimizing the layout of underground coal mine transportation systems and improving transportation efficiency; 2) Improved system reliability: The integrated design reduces a large number of external connection cables and interfaces, reducing the risk of problems such as loose connections and poor contact. In traditional split-type systems, connecting cables and interfaces are prone to loosening and oxidation under long-term vibration and impact conditions, affecting the normal operation of the equipment. The integrated unit, through its tight internal integration, eliminates these potential fault points, improving system stability and reliability. Furthermore, because the integrated unit adopts a unified heat dissipation design and control system, it can better coordinate the working states of the inverter and motor, promptly detecting and addressing potential faults. For example, through built-in temperature sensors and fault diagnosis modules, it monitors parameters such as temperature and current of the motor and inverter in real time. Once an abnormality is detected, corresponding protective measures are immediately taken, such as shutdown and alarm, effectively preventing equipment damage and production accidents caused by the escalation of faults. 3) Energy saving and consumption reduction: The integrated design makes energy transfer between the inverter and motor more efficient. By reducing the resistance loss and signal interference of connecting cables, the motor can operate more accurately according to the inverter's control commands, avoiding additional energy consumption caused by poor energy transfer. At the same time, the advanced variable frequency speed control technology adopted by the integrated unit can adjust the motor speed and output power in real time according to the actual operating conditions of the monorail crane, achieving precise energy-saving control.When the monorail is running unloaded, the integrated machine can automatically reduce the motor speed and reduce energy consumption; 4) When the load changes, it can quickly respond and adjust the motor output to ensure that the motor always operates in a highly efficient and energy-saving state. Relevant experimental data show that compared with the traditional speed regulation system, the energy saving effect of the explosion-proof variable frequency speed regulation integrated machine for monorail can reach 15-30%, which has important economic benefits for reducing the operating costs of coal mining enterprises and achieving sustainable development; 5) Improve the intelligence level of the equipment. The integrated design provides convenient conditions for realizing the intelligent control of the equipment. By deeply integrating the control module of the frequency converter with the motor's sensors, the integrated machine can collect the motor's operating data in real time, such as speed, torque, temperature, etc., and analyze and process this data through the built-in intelligent algorithm to realize functions such as remote monitoring, fault diagnosis, and preventive maintenance of the equipment. Operators can understand the operating status of the equipment in real time through the remote terminal, discover and solve potential problems in a timely manner, and improve the operation and maintenance efficiency and management level of the equipment. For example, by using big data analysis technology, the historical operating data of the equipment can be mined and analyzed to predict the probability of equipment failure and arrange maintenance plans in advance to avoid the impact of sudden equipment failure on production.

[0011] As a preferred technical solution:

[0012] As described above, in a monorail crane explosion-proof permanent magnet synchronous variable frequency speed control integrated machine, the motor is fixed to the variable frequency explosion-proof enclosure by bolts.

[0013] As described above, the radiator of the explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail crane is fixed to the explosion-proof variable frequency enclosure by bolts, and the radiator is covered by a radiator cover, which is fixed to the radiator by bolts.

[0014] The explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail hoisting described above includes a variable frequency explosion-proof enclosure body with an opening on one side;

[0015] The variable frequency explosion-proof enclosure body is provided with a partition that divides the internal space of the enclosure into a wiring area and an equipment arrangement area. The variable frequency explosion-proof enclosure body is fixed with an upper cover plate for sealing the wiring area and a lower cover plate for sealing the equipment arrangement area. The upper cover plate and the lower cover plate are fixedly connected to the variable frequency explosion-proof enclosure body by bolts.

[0016] The wiring device of the explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail hoisting as described above includes A1 clamping nut type inlet device and B2 pressure plate type inlet device;

[0017] The A1 clamping nut type inlet device and the B2 pressure plate type inlet device are symmetrically arranged on the two side walls of the frequency conversion explosion-proof enclosure.

[0018] The motor of the explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail hoisting described above includes a frame, rotor, shaft oil seal, front bearing, wave spring sheet, flange end cover, stator, rear end cover, rotary transformer, rear retaining ring and rear bearing;

[0019] There are two machine bases, each in a semi-cylindrical shape. The two machine bases are assembled to form a cylindrical structure. The two ends of the cylindrical structure are respectively provided with flange end caps and rear end caps.

[0020] The flange end cover has a through hole at its center that matches the rotor. A rotary transformer is fixed inside the rear end cover. The rotor and stator are arranged in a cylindrical structure assembled from the base. The stator is arranged outside the rotor and is fixedly connected to the base. One end of the rotor passes through the through hole and exits the flange end cover, while the other end is fixed to the rotary transformer. The rotor exiting the flange end cover is fitted with a shaft oil seal. The flange end cover has an annular groove communicating with the through hole, and a front bearing is arranged in the annular groove. A wave spring is arranged between the front bearing and the annular groove. A rear bearing that matches the rotor is fixed inside the rear end cover, and a rear retaining ring is provided inside the rear bearing.

[0021] The rotor of the explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail hoists described above includes a rotor core and magnets;

[0022] The magnet is mounted on the rotor core.

[0023] The stator of the explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail cranes described above includes a wound stator core, which is fixed on the machine base. The wound stator core is connected to a silicone tube, and a heat-shrinkable tube is fitted onto the silicone tube.

[0024] The base of the explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail hoisting as described above includes a front end plate, a machine cylinder base, a lifting ring base, a rear end plate, and heat sinks;

[0025] The machine base is generally semi-cylindrical, with its two ends connected to the front end plate and the rear end plate, respectively. Heat sinks are installed on the outer side of the machine base.

[0026] The outer wall of the barrel base is provided with a lifting ring seat, a connecting seat I and a connecting seat II. The connecting seat I and the connecting seat II have screw holes. The motor is bolted to the frequency conversion explosion-proof box through the connecting seat I and the connecting seat II.

[0027] The wall-passing device of the explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail hoisting as described above includes JD9 mine explosion-proof wiring terminals and JF8 wiring terminals;

[0028] The front outer wall of the explosion-proof enclosure for the corresponding equipment layout area is also equipped with internal and external grounding components, and grounding labels are provided next to the internal and external grounding components.

[0029] The wiring area is equipped with internal and external grounding components, and grounding labels are placed next to these components. Electromagnetic compatibility (EMC) issues were also fully considered in the design of the integrated unit. Through reasonable shielding measures and grounding design, the impact of internal electromagnetic interference on external equipment was reduced, while also improving the integrated unit's own immunity to external electromagnetic interference. For example, multiple shielding layers were installed inside the casing to shield against high-frequency electromagnetic radiation generated by the inverter; simultaneously, a single-point grounding method was adopted to ensure the stability and reliability of the electrical equipment's grounding system, reducing electromagnetic interference caused by grounding loops.

[0030] The radiator is made of copper substrate with heat sink fins, which has a good heat dissipation effect. It is used to dissipate heat for the IGBT module of the inverter in the explosion-proof enclosure, so that the inverter can always operate well within the normal temperature range. The radiator cover is made of Q235 iron plate, which has high yield strength and good impact resistance, thus protecting the radiator from external impact and enabling it to work well.

[0031] The above technical solution is only one feasible technical solution of the present invention. The scope of protection of the present invention is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0032] The above invention has the following advantages or beneficial effects:

[0033] (1) The explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail crane of the present invention has a reasonable structural design and adopts a highly integrated integrated design concept, which organically integrates the frequency converter and the motor to form a compact whole. Through optimized structural design, the large number of cables and complex interfaces required for the connection between the traditional frequency converter and the motor are greatly reduced, making the electrical connection between the two closer and more direct.

[0034] (2) The explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail crane of the present invention adopts a modular design to divide the variable frequency explosion-proof box into functional areas, which not only facilitates the electrical connection and signal transmission between modules, but also facilitates heat dissipation and maintenance;

[0035] (3) The explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail crane of the present invention is encapsulated in a shell with good explosion-proof performance. The shell is made of high-strength materials, such as cast iron and cast steel, which can effectively prevent the explosion of external explosive gases caused by sparks and arcs generated by internal electrical components, meet the explosion-proof requirements, and has good application prospects. Attached Figure Description

[0036] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; their focus is on illustrating the gist of the invention.

[0037] Figure 1 This is a schematic diagram of the overall structure of the explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail cranes of the present invention;

[0038] Figure 2 This is a schematic diagram of the motor structure;

[0039] Figure 3 This is a schematic diagram of the motor rotor.

[0040] Figure 4 This is a schematic diagram of the motor stator.

[0041] Figure 5 This is a schematic diagram of the motor base.

[0042] Figure 6 The right view and front view of the variable frequency explosion-proof enclosure are shown.

[0043] Figure 7 The images show the front perspective view, left view, and rear view of the variable frequency explosion-proof enclosure.

[0044] Figure 8 Here are the three views of the radiator;

[0045] Figure 9 The diagram shows the three-view drawing and solid view of the radiator shroud.

[0046] Wherein, 1 is the motor, 101 is the rotor, 1011 is the rotor core, 1012 is the magnet, 1013 is the nut, 1014 is the spring washer, 1015 is the rotor baffle, 1016 is the rotor end plate, 1017 is the flat washer, 102 is the shaft oil seal, 103 is the front bearing, 104 is the wave spring, 105 is the flange end cover, 106 is the stator, 1061 is the silicone tube, 1062 is the winding stator core, 1063 is the heat shrink tubing, 107 is the rear end cover, 108 is the rotary transformer, 109 is the rear retaining ring, 110 is the rear bearing, 111 is the frame, and 1111 is... Front end plate, 1112 is the barrel base, 1113 is the lifting eye seat, 1114 is the rear end plate, 1115 is the heat sink, 1116 is the connecting seat I, 1117 is the connecting seat II, 2 is the frequency converter explosion-proof enclosure, 201 is the main body of the frequency converter explosion-proof enclosure, 202 is the upper cover plate of the enclosure, 203 is the lower cover plate of the enclosure, 204 is the A1 clamping nut type inlet device, 205 is the B2 pressure plate type inlet device, 206 is the frequency converter, 207 is the JD9 mining explosion-proof terminal block, 208 is the JF8 terminal block, 209 is the internal and external grounding assembly, 210 is the grounding label, 3 is the heat sink, and 4 is the heat sink cover. Detailed Implementation

[0047] The structure of the present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0048] Example 1

[0049] An explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail cranes, such as Figures 1-9 As shown, it includes a motor 1, a frequency converter explosion-proof enclosure 2, and a radiator 3;

[0050] The frequency converter explosion-proof enclosure 2 includes a main body 201 with an opening on one side. The main body 201 has a partition that divides the internal space into a wiring area and an equipment arrangement area, which are independent and isolated from each other. An upper cover 202 for enclosing the wiring area and a lower cover 203 for enclosing the equipment arrangement area are fixed to the main body 201. The upper cover 202 and the lower cover 203 are bolted to the main body 201. The frequency converters corresponding to the wiring areas... Multiple wiring devices are provided on the side wall of the explosion-proof enclosure 2 (the wiring devices include A1 clamping nut type inlet device 204 and B2 pressure plate type inlet device 205, which are symmetrically arranged on the two side walls of the frequency conversion explosion-proof enclosure 2). A wall-passing device is provided between the wiring area and the equipment arrangement area to connect the wiring area and the equipment arrangement area (the wall-passing device includes JD9 mine explosion-proof terminal block 207 and JF8 terminal block 208). A frequency converter 206 is arranged in the equipment arrangement area.

[0051] Motor 1 includes a frame 111, rotor 101, shaft oil seal 102, front bearing 103, wave spring 104, flange end cover 105, stator 106, rear end cover 107, rotary transformer 108, rear retaining ring 109, and rear bearing 110. There are two frames 111, each in a semi-cylindrical shape. The two frames 111 are assembled to form a cylindrical structure. Flange end cover 105 and rear end cover 107 are respectively provided at both ends of the cylindrical structure. A through hole matching the rotor 101 is opened in the center of the flange end cover 105. The rotary transformer 108 is fixed inside the rear end cover 107. The rotor 101 and stator 106 are arranged on the frame 111. Inside the assembled cylindrical structure, the stator 106 is arranged outside the rotor 101 and is fixedly connected to the frame 111. One end of the rotor 101 passes through the through hole and exits the flange end cover 105, and the other end is fixed to the rotary transformer 108. The rotor 101 that passes through the flange end cover 105 is covered with a shaft oil seal 102. The inner side of the flange end cover 105 is provided with an annular groove that communicates with the through hole and a front bearing 103 is arranged in the annular groove. A wave spring plate 104 is arranged between the front bearing 103 and the annular groove. The inner side of the rear end cover 107 is fixed with a rear bearing 110 that matches the rotor 101. The inner side of the rear bearing 110 is provided with a rear retaining ring 109.

[0052] The rotor 101 includes a rotor core 1011 and a magnet 1012. The magnet 1012 is fitted onto the rotor core 1011. A rotor end plate 1016 is provided on the outer side of the magnet 1012. A rotor baffle 1015 is fixed on the outer side of the rotor end plate 1016. A screw is provided on the outer side of the rotor baffle 1015. A spring washer 1014 is fitted onto the screw and a nut 1013 is threaded onto the screw. The spring washer 1014 is located between the nut 1013 and the rotor baffle 1015. A flat washer 1017 is also fitted onto the screw and is located on the outer side of the nut 1013.

[0053] The stator 106 includes a wound stator core 1062, which is fixed on the frame 111. The wound stator core 1062 is connected to a silicone tube 1061, and a heat-shrinkable tube 1063 is fitted on the silicone tube 1061. The frame 111 includes a front end plate 1111, a barrel base 1112, a lifting eye seat 1113, a rear end plate 1114, and a heat sink 1115. The barrel base 1112 is semi-cylindrical in shape, and its two ends are connected to the front end plate 1111 and the rear end plate 1114, respectively. A heat sink 1115 is installed on the outer side of the barrel base 1112. A lifting eye seat 1113, a connecting seat I 1116, and a connecting seat II 1117 are provided on the outer wall of the barrel base 1112. The connecting seat I 1116 and the connecting seat II 1117 have screw holes.

[0054] The motor (using the screw holes on connector I 1116 and connector II 1117) is fixed to the front outer wall of the frequency converter explosion-proof enclosure by bolts. The control cable of the motor is connected to the wiring area through the wiring device and then connected to the frequency converter 106 through the wall-mounting device. The radiator 3 is fixed to the front outer wall of the frequency converter explosion-proof enclosure in the corresponding equipment layout area by bolts. The radiator 3 is covered by a radiator cover 4 and the radiator cover 4 is fixed to the radiator 3 by bolts. The front outer wall of the frequency converter explosion-proof enclosure in the corresponding equipment layout area is also equipped with an internal and external grounding component 209 and a grounding sign 210 is provided next to the internal and external grounding component 209. The wiring area is equipped with an internal and external grounding component 209 and a grounding sign 210 is provided next to the internal and external grounding component 209.

[0055] The wiring of the explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for the above-mentioned monorail crane is as follows: Connect the external power supply cable to the JF8 terminal 208 through the B2 pressure plate type inlet device 205; then connect it to the frequency converter 206 through the JF8 terminal 208; the frequency converter 206 is connected to the U, V, and W three-phase windings on the winding stator core 1062 in the stator 106 of the motor. The temperature measuring element embedded in the winding stator core 1062 is also connected to the frequency converter 206 to monitor the motor temperature; the frequency converter 206 is connected to the JD9 mining explosion-proof terminal 207, and the JD9 mining explosion-proof terminal 207 is connected to the relevant external equipment through the A1 clamping nut type inlet device 204.

[0056] Verification has shown that the explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail cranes of this invention has a reasonable structural design and adopts a highly integrated integrated design concept, organically integrating the frequency converter and motor into a compact whole. Through optimized structural design, the large number of cables and complex interfaces required for the connection between the traditional frequency converter and motor are greatly reduced, making the electrical connection between the two closer and more direct. The modular design of the explosion-proof enclosure for frequency conversion is functionally divided, which not only facilitates the electrical connection and signal transmission between modules, but also facilitates heat dissipation and maintenance. The entire integrated machine is encapsulated in a shell with good explosion-proof performance. The shell is made of high-strength materials such as cast iron and cast steel, which can effectively prevent sparks and arcs generated by internal electrical components from causing explosions of external explosive gases, meeting explosion-proof requirements and showing good application prospects.

[0057] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the essence of the present invention, and will not be elaborated here either.

[0058] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention's technical solutions still fall within the protection scope of the present invention.

Claims

1. A type explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail cranes, characterized in that: Includes motor, frequency converter explosion-proof enclosure and radiator; The variable frequency explosion-proof enclosure includes a wiring area and an equipment arrangement area that are independent and isolated from each other. Multiple wiring devices are provided on the side wall of the variable frequency explosion-proof enclosure corresponding to the wiring area. A wall-mounted device is provided between the wiring area and the equipment arrangement area to connect the wiring area and the equipment arrangement area. A frequency converter is arranged in the equipment arrangement area. The motor is fixed on the front outer wall of the frequency converter explosion-proof enclosure. The control cable of the motor is connected to the wiring area through the wiring device and then connected to the frequency converter through the wall-mounting device. The heat sink is fixed on the front outer wall of the frequency converter explosion-proof enclosure in the corresponding equipment layout area.

2. The explosion-proof permanent magnet synchronous variable frequency speed regulation all-in-one machine for monorail hoist according to claim 1, characterized in that, The motor is fixed to the frequency converter explosion-proof enclosure by bolts.

3. The explosion-proof permanent magnet synchronous variable frequency speed regulation all-in-one machine for monorail hoist according to claim 1, characterized in that, The radiator is fixed to the frequency converter explosion-proof enclosure by bolts, and the radiator is covered by a radiator cover, which is fixed to the radiator by bolts.

4. The explosion-proof permanent magnet synchronous variable-frequency speed regulation all-in-one machine for monorail hoists according to claim 1, characterized in that, The variable frequency explosion-proof enclosure includes a main body with an opening on one side; The variable frequency explosion-proof enclosure body is provided with a partition that divides the internal space of the enclosure into a wiring area and an equipment arrangement area. The variable frequency explosion-proof enclosure body is fixed with an upper cover plate for sealing the wiring area and a lower cover plate for sealing the equipment arrangement area. The upper cover plate and the lower cover plate are fixedly connected to the variable frequency explosion-proof enclosure body by bolts.

5. The explosion-proof permanent magnet synchronous variable-frequency speed regulation all-in-one machine for monorail hoists according to claim 1, characterized in that, The wiring device includes A1 a clamping nut type inlet device and B2 a pressure plate type inlet device; The A1 clamping nut type inlet device and the B2 pressure plate type inlet device are symmetrically arranged on the two side walls of the frequency conversion explosion-proof enclosure.

6. The explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail hoists according to claim 1, characterized in that, The motor includes a frame, rotor, shaft oil seal, front bearing, wave spring plate, flange end cover, stator, rear end cover, rotary transformer, rear retaining ring, and rear bearing; There are two machine bases, each in a semi-cylindrical shape. The two machine bases are assembled to form a cylindrical structure. The two ends of the cylindrical structure are respectively provided with flange end caps and rear end caps. The flange end cover has a through hole at its center that matches the rotor. A rotary transformer is fixed inside the rear end cover. The rotor and stator are arranged in a cylindrical structure assembled from the base. The stator is arranged outside the rotor and is fixedly connected to the base. One end of the rotor passes through the through hole and exits the flange end cover, while the other end is fixed to the rotary transformer. The rotor exiting the flange end cover is fitted with a shaft oil seal. The flange end cover has an annular groove communicating with the through hole, and a front bearing is arranged in the annular groove. A wave spring is arranged between the front bearing and the annular groove. A rear bearing that matches the rotor is fixed inside the rear end cover, and a rear retaining ring is provided inside the rear bearing.

7. The explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail hoists according to claim 6, characterized in that, The rotor includes a rotor core and magnets; The magnet is mounted on the rotor core.

8. The explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail hoists according to claim 6, characterized in that, The stator includes a wound stator core, which is fixed on the machine base. The wound stator core is connected to a silicone tube, and a heat-shrinkable tube is fitted onto the silicone tube.

9. The explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail cranes according to claim 1, characterized in that, The base includes a front panel, a barrel base, a lifting ring base, a rear panel, and heat sinks; The machine base is generally semi-cylindrical, with its two ends connected to the front end plate and the rear end plate, respectively. Heat sinks are installed on the outer side of the machine base. The outer wall of the barrel base is provided with a lifting ring seat, a connecting seat I and a connecting seat II, and threaded holes are opened on the connecting seat I and the connecting seat II.

10. The explosion-proof permanent magnet synchronous variable frequency speed control integrated machine for monorail cranes according to claim 1, characterized in that, The wall-passing device includes JD9 mine explosion-proof terminal blocks and JF8 terminal blocks; The front outer wall of the explosion-proof enclosure for the corresponding equipment layout area is also equipped with internal and external grounding components, and grounding labels are provided next to the internal and external grounding components. The wiring area is equipped with internal and external grounding components, and grounding labels are placed next to the internal and external grounding components.

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