Crushing main machine frequency conversion control system with air cooling structure

Abstract

The utility model relates to the technical field of mobile crushing equipment, in particular to a crushing main machine frequency conversion control system with an air cooling structure, which is characterized by comprising a frequency conversion cabinet and an air cooling device, the frequency conversion cabinet is electrically connected with a crushing motor of a crushing main machine, and the air cooling device comprises an air inlet fan and a dust filter. The dust filter, the air inlet fan and the frequency conversion cabinet are sequentially arranged and communicated in the air inlet direction. According to the utility model, frequency conversion control can be carried out on the crushing main machine, the mobile crushing equipment can be well adapted to a severe working environment with high dust content, and stable operation can be maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile crushing equipment, and particularly relates to a variable-frequency control system for a crushing main engine with an air-cooling structure. Background Art

[0002] Mobile crushing equipment has the characteristics of an integrated unit, flexible mobility, and on-site free combination, and is favored by more and more customers. For existing mobile crushing equipment driven by electricity, since the working load of the crushing main engine changes during the entire crushing process, in order to ensure the working efficiency of the crushing motor of the crushing main engine and avoid damage due to excessive load, it is necessary to perform variable-frequency control on the crushing motor. Moreover, since a large amount of dust is generated during the crushing process of the mobile crushing equipment, the overall working environment is relatively harsh. Therefore, how to propose a variable-frequency control system for a crushing main engine that can perform variable-frequency control on the crushing main engine, well adapt to the harsh working environment with high dust of the mobile crushing equipment, and maintain stable operation is the problem to be solved. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a variable-frequency control system for a crushing main engine with an air-cooling structure that can perform variable-frequency control on a crushing motor, well adapt to the harsh working environment with high dust of the mobile crushing equipment, and maintain stable operation.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is as follows: A variable-frequency control system for a crushing main engine with an air-cooling structure includes a frequency conversion cabinet and an air-cooling device. The frequency conversion cabinet is electrically connected to the crushing motor of the crushing main engine. The air-cooling device includes an air inlet fan and a dust filter. The dust filter, the air inlet fan, and the frequency conversion cabinet are arranged and connected in sequence along the air inlet direction.

[0005] Further, both the frequency conversion cabinet and the air-cooling device are installed on the frame of the mobile crushing equipment.

[0006] Further, the air inlet fan is a marine axial flow fan, and the dust filter is a desert air filter.

[0007] Further, the air-cooling device is arranged below the frequency conversion cabinet. A first ventilation pipe is connected between the desert air filter and the marine axial flow fan, and a second ventilation pipe is connected between the marine axial flow fan and the bottom of the frequency conversion cabinet.

[0008] Further, both the first ventilation pipe and the second ventilation pipe are polyurethane steel pipes.

[0009] Furthermore, a first flange conical reducer joint is installed between the first ventilation pipe and the marine axial flow fan, and a second flange conical reducer joint is installed between the marine axial flow fan and the second ventilation pipe. Sealing washers are provided between the first flange conical reducer joint and the second flange conical reducer joint and the marine axial flow fan.

[0010] Furthermore, the second flange conical reducer joint is in the shape of a 90-degree elbow.

[0011] Furthermore, the desert air filter is fixedly installed on the frame through the first mounting seat, the marine axial flow fan is fixedly installed on the frame through the second mounting seat, and the frequency conversion cabinet and the crushing motor are both fixedly installed on the frame through the mounting frame.

[0012] Furthermore, the frequency conversion cabinet includes a cabinet body and an inverter. An air-cooled chamber is provided inside the cabinet body, and the inverter is installed in the air-cooled chamber. An exhaust component is provided at the top of the cabinet body. The exhaust component includes an exhaust fan and an exhaust hood. The exhaust hood is fixedly installed on the outer top surface of the cabinet body. The exhaust hood is adapted to the cabinet body. An exhaust chamber is provided inside the exhaust hood. A plurality of notches are provided on the outer surface around the exhaust hood. At least one exhaust port is provided at the top of the cabinet body. An exhaust fan is fixedly installed on the inner top surface of the cabinet body at the exhaust port.

[0013] Furthermore, the four peripheral edges at the top of the exhaust hood extend outward and form baffles, and a plurality of lifting lugs are fixedly provided at the top of the cabinet body.

[0014] As can be seen from the above description, a frequency conversion control system for a crushing main machine with an air-cooled structure provided by the present utility model has the following beneficial effects: By performing frequency conversion control on the crushing motor of the crushing main machine through the frequency conversion cabinet, the power of the crushing motor can be changed with the change of the working load of the crushing main machine, effectively ensuring the working efficiency of the crushing motor and avoiding damage due to excessive load; Through the setting of the inlet fan, the inside of the frequency conversion cabinet can be continuously blown to increase the air flow rate inside the frequency conversion cabinet and perform air-cooling on the inside of the frequency conversion cabinet, enabling the frequency conversion cabinet to better maintain within the corresponding temperature range, effectively avoiding the frequency conversion cabinet from malfunctioning and alarming due to excessive temperature, and thus better maintaining stable operation; Through the setting of the dust filter, the air entering the frequency conversion cabinet can be filtered, thereby achieving the purpose of improving the inlet air quality, further ensuring the stable operation of the frequency conversion cabinet, and being able to well adapt to the harsh working environment with high dust of the mobile crushing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of a frequency conversion control system for a crushing main machine with an air-cooled structure of the present utility model.

[0016] Figure 2 is Figure 1 a partial enlarged schematic diagram at A in

[0017] Figure 3 It is a schematic diagram of the internal structure of a frequency conversion cabinet.

[0018] In the figure: 1 - frequency conversion cabinet; 11 - cabinet body; 111 - air-cooled cavity; 112 - air outlet; 113 - lifting lug; 12 - frequency converter; 13 - exhaust assembly; 131 - exhaust fan; 132 - exhaust hood; 1321 - exhaust cavity; 1322 - notch; 1323 - baffle; 2 - air-cooling device; 21 - intake fan; 22 - dust filter; 23 - first ventilation pipe; 24 - second ventilation pipe; 25 - first flange tapered reducer joint; 26 - second flange tapered reducer joint; 27 - sealing gasket; 28 - first mounting seat; 29 - second mounting seat. Specific embodiments

[0019] The present invention will be further described below through specific embodiments.

[0020] As Figures 1 to 3 shown, a frequency conversion control system for a crushing mainframe with an air-cooling structure according to the present invention includes a frequency conversion cabinet 1 and an air-cooling device 2. The frequency conversion cabinet 1 is electrically connected to the crushing motor of the crushing mainframe. The air-cooling device 2 includes an intake fan 21 and a dust filter 22. The dust filter 22, the intake fan 21 and the frequency conversion cabinet 1 are arranged and connected in sequence along the air intake direction. Both the frequency conversion cabinet 1 and the air-cooling device 2 are installed on the frame of the mobile crushing equipment.

[0021] By using the frequency conversion cabinet 1 to perform frequency conversion control on the crushing motor of the crushing mainframe, the power of the crushing motor can be changed with the change of the working load of the crushing mainframe, effectively ensuring the working efficiency of the crushing motor and avoiding damage due to overloading; by setting the intake fan 21, the frequency conversion cabinet 1 can be continuously blown to increase the air flow rate in the frequency conversion cabinet 1 and perform air-cooling on the frequency conversion cabinet 1, so that the frequency conversion cabinet 1 can better maintain within the corresponding temperature range, effectively avoiding the frequency conversion cabinet 1 from malfunctioning and alarming due to excessive temperature, and thus better maintaining stable operation; by setting the dust filter 22, the air entering the frequency conversion cabinet 1 can be filtered, so as to achieve the purpose of improving the air intake quality, further ensuring the stable operation of the frequency conversion cabinet 1, and being able to well adapt to the harsh working environment with high dust of the mobile crushing equipment.

[0022] The air inlet fan 21 is a marine axial flow fan, which has a small structure, a large air volume, low noise, and is integrally in an axial pipeline shape, facilitating subsequent installation and use. The marine axial flow fan is for positive pressure air supply, which can ensure that the inside of the frequency conversion cabinet 1 maintains positive pressure and makes it more difficult for external dust to enter the frequency conversion cabinet 1. The dust filter 22 is a desert air filter, which can be selected from products already sold in the market. The cyclone tube of the desert air filter, through its unique cyclone coarse filtration mechanism, not only effectively removes most of the dust and impurities in the air, but also significantly improves the filtration efficiency of the entire air filter system, and the filter element has a long service life. Especially in a harsh dust environment, its protective effect is more significant, so it can better adapt to the high-dust working environment of mobile crushing equipment.

[0023] In addition, the air cooling device 2 is arranged below the frequency conversion cabinet 1. A first ventilation pipe 23 is connected between the desert air filter and the marine axial flow fan, and a second ventilation pipe 24 is connected between the marine axial flow fan and the bottom of the frequency conversion cabinet 1. In this way, it is convenient to connect the desert air filter, the marine axial flow fan and the frequency conversion cabinet 1. Preferably, both the first ventilation pipe 23 and the second ventilation pipe 24 are polyurethane steel wire pipes, which have good bending and deformation capabilities and can be bent arbitrarily, thus allowing some deviation in the installation positions of the connecting components at both ends, facilitating subsequent overall installation, and being light in weight and aging-resistant.

[0024] A first flange tapered reducer joint 25 is installed between the first ventilation pipe 23 and the marine axial flow fan, and a second flange tapered reducer joint 26 is installed between the marine axial flow fan and the second ventilation pipe 24. In this way, it is convenient to realize the connection between the marine axial flow fan and the first ventilation pipe 23 and the second ventilation pipe 24 with different pipe diameters. At the same time, with the adoption of a conical structure, the air volume loss is small, so as to better ensure the air cooling effect inside the frequency conversion cabinet 1. The second flange tapered reducer joint 26 is in the shape of a 90-degree elbow, which is convenient for adjusting the installation directions of the marine axial flow fan and the desert air filter, and making the marine axial flow fan and the desert air filter perpendicular to the second ventilation pipe 24, so that the overall structure is more compact and can better adapt to the installation on mobile crushing equipment. Sealing gaskets 27 are provided between both the first flange tapered reducer joint 25 and the second flange tapered reducer joint 26 and the marine axial flow fan. The sealing gaskets 27 are made of rubber, which can effectively ensure the sealing performance of the connection.

[0025] Correspondingly, both ends of the first ventilation pipe 23 can be fixedly installed on the desert air filter and the first flange tapered reducer joint 25 respectively through heavy-duty American gasketed inner-lined hose clamps, and both ends of the second ventilation pipe 24 can be fixedly installed on the second flange tapered reducer joint 26 and the frequency conversion cabinet 1 respectively through heavy-duty American gasketed inner-lined hose clamps.

[0026] The desert air filter is fixedly installed on the frame through the first mounting seat 28. Preferably, the number of the second mounting seats 29 is two, so as to facilitate ensuring the stable installation of the desert air filter. The marine axial flow fan is fixedly installed on the frame through the second mounting seat 29. Preferably, the number of the second mounting seats 29 is two, so as to facilitate ensuring the stable installation of the marine axial flow fan. The frequency conversion cabinet 1 and the crushing motor are both fixedly installed on the frame through the mounting frame.

[0027] Therefore, by arranging the air cooling device 2 below the frequency conversion cabinet 1, adopting the desert air filter and the marine axial flow fan, and cooperating with the use of the first ventilation pipe 23, the second ventilation pipe 24, the first flange tapered reducer joint 25 and the second flange tapered reducer joint 26, it is convenient to well connect the desert air filter and the marine axial flow fan with the frequency conversion cabinet 1, and make the overall structure of the variable frequency control system of the crushing main engine more compact and small. On the basis of ensuring good air cooling effect, it can better adapt to the installation on the mobile crushing equipment, and it is not easy to cause the problems of excessive height or width in the transportation size of the mobile crushing equipment, which is convenient for the subsequent smooth transportation.

[0028] The variable-frequency cabinet 1 includes a cabinet body 11 and a frequency converter 12. An air-cooling chamber 111 is provided inside the cabinet body 11, and the frequency converter 12 is installed in the air-cooling chamber 111. An exhaust assembly 13 is provided at the top of the cabinet body 11, so that the top of the cabinet body 11 adopts an overall heat dissipation structure design. The exhaust assembly 13 includes an exhaust fan 131 and an exhaust hood 132. The exhaust hood 132 is fixedly installed on the outer top surface of the cabinet body 11. The exhaust hood 132 is adapted to the cabinet body 11. An exhaust chamber 1321 is provided inside the exhaust hood 132. A plurality of notches 1322 are provided on the outer surface around the exhaust hood 132. At least one exhaust port 112 is provided at the top of the cabinet body 11. The exhaust fan 131 is fixedly installed on the inner top surface of the cabinet body 11 at the exhaust port 112. In this way, through the exhaust function of the exhaust fan 131, the hot air in the air-cooling chamber 111 can flow upward quickly and be quickly discharged into the exhaust chamber 1321, and then be discharged to the outside through the plurality of notches 1322. Thus, it is convenient to achieve a better air-cooling and temperature-lowering effect on the frequency converter 12. In addition, through the setting of the exhaust hood 132, it can play a corresponding rain-proof role on the top of the cabinet body 11, effectively preventing rainwater from dripping into the cabinet body 11 through the exhaust fan 131. At the same time, the height of the exhaust hood 132 can be set to a relatively low value. Preferably, the height of the exhaust hood 132 is 3 cm - 5 cm. In addition, the four peripheral edges of the top of the exhaust hood 132 extend outward to form a baffle 1323. A plurality of lifting lugs 113 are fixedly provided at the top of the cabinet body 11. Correspondingly, the number of the lifting lugs 113 is four and they are respectively arranged at the four corners of the top of the cabinet body 11. Thus, it is convenient to hoist the variable-frequency cabinet 1.

[0029] Preferably, the number of the exhaust fans 131 and the exhaust ports 112 is both 2 - 4, and they correspond one by one and are evenly arranged along the length direction of the cabinet body 11. Through the setting of the plurality of exhaust fans 131, a better exhaust effect can be achieved.

[0030] The above are only several specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantive modification made to the present invention using this concept shall fall within the scope of infringement of the protection scope of the present invention.

Claims

1. A frequency conversion control system for a crushing machine with an air cooling structure, characterized in that: It includes a frequency conversion cabinet and an air cooling device, the frequency conversion cabinet is electrically connected to the crushing motor of the crushing main machine, the air cooling device includes an air intake fan and a dust filter, the dust filter, the air intake fan and the frequency conversion cabinet are arranged in sequence and connected along the air inlet direction, the air intake fan is a marine axial flow fan, the dust filter is a desert air filter, the air cooling device is arranged below the frequency conversion cabinet, a first ventilation pipe is connected between the desert air filter and the marine axial flow fan, a second ventilation pipe is connected between the marine axial flow fan and the bottom of the frequency conversion cabinet, a first flange conical reducer is installed between the first ventilation pipe and the marine axial flow fan, a second flange conical reducer is installed between the marine axial flow fan and the second ventilation pipe, the second flange conical reducer is in the shape of a 90-degree elbow, and the first flange conical reducer and the second flange conical reducer are both in a conical structure.

2. The frequency conversion control system of a crushing host with an air cooling structure according to claim 1 is characterized in that: The frequency conversion cabinet and the air cooling device are both installed on the frame of the mobile crushing equipment.

3. The frequency conversion control system of a crushing host with an air cooling structure according to claim 1 is characterized in that: The first ventilation pipe and the second ventilation pipe are both polyurethane steel wire pipes.

4. The frequency conversion control system of a crushing host with an air cooling structure according to claim 1 is characterized in that: Sealing gaskets are provided between the first flange tapered reducer and the second flange tapered reducer and the marine axial flow fan.

5. The frequency conversion control system of a crushing host with an air cooling structure according to claim 2 is characterized in that: The desert air filter is fixedly mounted on the frame via a first mounting seat, the marine axial flow fan is fixedly mounted on the frame via a second mounting seat, and the frequency conversion cabinet and the crushing motor are both fixedly mounted on the frame via a mounting frame.

6. The frequency conversion control system of a crushing host with an air cooling structure according to claim 1 is characterized in that: The frequency conversion cabinet includes a cabinet body and a frequency converter. An air cooling cavity is provided in the cabinet body. The frequency converter is installed in the air cooling cavity. An exhaust assembly is provided on the top of the cabinet body. The exhaust assembly includes an exhaust fan and an exhaust hood. The exhaust hood is fixedly installed on the outer top surface of the cabinet body. The exhaust hood is adapted to the cabinet body. An exhaust cavity is provided in the exhaust hood. Several notches are provided on the outer surfaces around the exhaust hood. At least one exhaust port is provided on the top of the cabinet body. The exhaust fan is fixedly installed on the upper top surface of the cabinet body at the exhaust port.

7. The frequency conversion control system of a crushing host with an air cooling structure according to claim 6 is characterized in that: The edges of the four sides of the top of the exhaust hood extend outwards and form baffles, and a plurality of hanging ears are fixedly provided on the top of the cabinet.

Images