Large vacuum pump motor drive device, control method and suction and pressure conveying vehicle

Abstract

The present application relates to a large vacuum pump motor drive device, a control method and a suction and pressure conveying vehicle, which relates to the technical field of suction and pressure conveying vehicles, including a vacuum pump for sucking and discharging dust; a drive motor for connecting to a vehicle battery, the drive motor being connected to a vacuum pump for driving the vacuum pump to operate; a cooling mechanism, which includes an air cooler, a cooling water tank and a cooling pipe, the cooling pipe being wrapped around the drive motor and connected to the cooling water tank, the air cooler being arranged at one end of the drive motor, the cooling water tank being located between the air cooler and the drive motor, and the air cooler being used to cool the drive motor and the cooling water tank. When the temperature of the drive motor is less than a set value, the air cooler directly cools the drive motor, and when the temperature of the drive motor is greater than a set value, the coolant starts to circulate through the cooling pipe to cool the drive motor, and the air cooler cools the coolant entering the cooling water tank, thereby ensuring a cooling effect at different temperatures. At the same time, when only a small amount of cooling is required, there is no need to start the liquid cooling cycle.

Description

Technical Field

[0001] The present invention relates to the technical field of suction and pressure-feeding vehicles, and in particular to a large vacuum pump motor drive device, a control method and a suction and pressure-feeding vehicle. Background Art

[0002] Suction and pressure conveyor trucks, also known as suction and pressure conveyor trucks, are suitable for the collection, transfer, and transportation of nearly 100 types of dust and powder materials in various industries, including metallurgy, chemical industry, energy, building materials, coal, mining, and port transportation. They can transport dusty materials such as ironmaking, steelmaking, sintering, coking, raw materials, calcium carbide furnace purification and dust removal, gas-fired lime kilns, smelting desiliconization, dephosphorization agents, coke powder, aluminum powder, cement, mineral powder, lime powder, limestone dust, and mixed dust. Suction and pressure conveyor trucks are efficient, safe, and environmentally friendly specialized vehicles for bulk material collection and transportation.

[0003] In the prior art, there is a universal AC / DC suction and pressure-feeding device with patent number CN219258881U, which mainly includes a material tank, a fluidized bed is provided at the bottom of the material tank, and the fluidized bed divides the material tank into a material loading area at the upper end and an air chamber area at the lower end, a vacuum pump, which is connected to the material loading area; an air compressor, which is connected to the air chamber area; a high-voltage battery, which is used to provide power for the vacuum pump and the air compressor; and an on-board charging pile, which is used to provide power for the vacuum pump and the air compressor, or to charge the high-voltage battery. The universal AC / DC suction and pressure-feeding device of the present application adopts a flexible and mobile power source. When there is no external power supply, the power of the chassis battery is used. When there is an external power supply, only the external power supply is used, and the battery can be charged through an external connection at the same time, that is, the purpose of charging the battery while working is achieved.

[0004] However, this AC / DC universal suction and pressure delivery device will generate heat during use, especially when a large vacuum pump is used. A cooling device needs to be installed on the AC / DC universal suction and pressure delivery device. In addition, it is difficult to adjust the power of the cooling device according to actual needs during use. The operation is complicated, and it is difficult to accurately adjust the cooling device, which may cause safety hazards. Summary of the Invention

[0005] The present application provides a large vacuum pump motor drive device, a control method and a suction and pressure delivery vehicle, which can solve the problem that the AC / DC universal suction and pressure delivery device in the prior art will generate heat during use. In particular, when a large vacuum pump is used, a cooling device needs to be installed on the AC / DC universal suction and pressure delivery device, and it is difficult to adjust the power of the cooling device according to actual needs during use. The operation is complicated, and it is difficult to accurately adjust the cooling device, which may cause safety hazards.

[0006] In a first aspect, an embodiment of the present application provides a large vacuum pump motor drive device, comprising:

[0007] Vacuum pump, which is used to absorb and exhaust dust;

[0008] a drive motor, which is connected to the vehicle battery and is connected to the vacuum pump to drive the vacuum pump to operate;

[0009] The cooling mechanism includes an air cooler, a cooling water tank and a cooling pipe. The cooling pipe is covered on the drive motor and is connected to the cooling water tank. The air cooler is arranged at one end of the drive motor. The cooling water tank is located between the air cooler and the drive motor. The air cooler is used to cool the drive motor and the cooling water tank.

[0010] In combination with the first aspect, in one embodiment, the cooling water tank is provided with a plurality of spaced-apart long holes, and the long holes are used to allow the cold air from the air cooler to pass through the cooling water tank and act on the drive motor.

[0011] In combination with the first aspect, in one embodiment, a driver is further provided on one side of the drive motor, and the driver is used to connect to the signal of the external control unit and to the drive motor. A heat exchange pipe is provided on the driver, and the heat exchange pipe is connected to the cooling water tank. The driver is used to drive the drive motor according to the target vacuum degree and control its speed to regulate the vacuum degree of the vacuum pump.

[0012] In combination with the first aspect, in one embodiment, the cooling mechanism also includes a circulating water pump, which is connected to the cooling water tank through a pipeline to provide coolant to the drive motor and the driver. When the coolant flows from the circulating water pump through the drive motor and the driver, it passes through the cooling water tank and is cooled by the air cooler before flowing back to the circulating water pump.

[0013] In combination with the first aspect, in one embodiment, the cooling mechanism further includes an expansion kettle, which is connected to the cooling water tank and the circulating water pump and is used to observe and add coolant in the cooling mechanism.

[0014] In conjunction with the first aspect, in one embodiment, the present invention further includes a mounting base, wherein the mounting base includes:

[0015] Two spaced-apart connecting rods, the connecting rods being used to connect to the vehicle chassis beam and being arranged along the vehicle chassis beam;

[0016] Two spaced-apart mounting rods, each of which is perpendicular to the connecting rod, one end of each mounting rod being connected to one of the connecting rods and the other end extending out of the other connecting rod, the drive motor being disposed at a portion of the mounting rod extending out of the other connecting rod;

[0017] A mounting plate is provided at a portion where the mounting rod and the connecting rod are connected, and the mounting plate is used for mounting the vacuum pump.

[0018] In combination with the first aspect, in one embodiment, it also includes two L-shaped plates arranged opposite to each other, the L-shaped plates are correspondingly arranged on the mounting rod, the drive motor is arranged between the two L-shaped plates, the driver is arranged at the end of the mounting rod, the air cooler is located above the driver and is connected to the L-shaped plate through a connecting assembly, the circulating water pump is arranged on the connecting assembly, and the expansion kettle is arranged on the upper side of the cooling water tank.

[0019] In combination with the first aspect, in one embodiment, the drive motor is connected to the vacuum pump via a coupling, and the coupling includes:

[0020] a first terminal connected to the rotating shaft of the drive motor, wherein a side of the first terminal away from the drive motor is provided with a plurality of first connecting columns arranged along the circumferential direction;

[0021] a second terminal connected to the vacuum pump, wherein a side of the second terminal away from the vacuum pump is provided with a plurality of second connecting columns arranged along the circumferential direction;

[0022] A buffer block is arranged between the first terminal and the second terminal. The buffer block is provided with a plurality of connecting grooves. The first connecting columns and the second connecting columns correspond to the connecting grooves one by one. The first connecting columns and the second connecting columns are arranged in the connecting grooves in a cross-spaced manner.

[0023] In a second aspect, an embodiment of the present application further provides a control method for a large vacuum pump motor drive device, which is implemented using the above-mentioned large vacuum pump motor drive device, comprising the following steps:

[0024] When the temperature of the drive motor is lower than the set value, the air cooler directly cools the drive motor;

[0025] When the temperature of the drive motor is greater than the set value, the coolant begins to circulate through the cooling pipe to cool the drive motor, and the air cooler cools the coolant entering the cooling water tank.

[0026] In a third aspect, an embodiment of the present application further provides a suction and pressure conveying vehicle, which includes the above-mentioned large vacuum pump motor drive device.

[0027] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0028] When the vacuum pump motor drive device is used, the drive motor is connected to the vehicle battery, the drive motor is connected to the vacuum pump, the cooling pipe is covered on the drive motor and is connected to the cooling water tank, the air cooler is arranged at one end of the drive motor, and the cooling water tank is located between the air cooler and the drive motor. The air cooler is used to cool the drive motor and the cooling water tank. When the temperature of the drive motor is lower than the set value, the air cooler directly cools the drive motor. When the temperature of the drive motor is higher than the set value, the coolant starts to circulate through the cooling pipe to cool the drive motor. The air cooler cools the coolant entering the cooling water tank, thereby ensuring the cooling effect at different temperatures. At the same time, when only a small amount of cooling is required, there is no need to start the liquid cooling cycle, thereby reducing energy consumption and solving the problem that the AC / DC universal suction and pressure delivery device in the prior art will generate heat during use. In particular, when a large vacuum pump is used, a cooling device needs to be installed on the AC / DC universal suction and pressure delivery device, and it is difficult to adjust the power of the cooling device according to actual needs during use. The operation is complicated, and it is difficult to accurately adjust the cooling device, which may cause safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 This is a front structural schematic diagram of an embodiment of a large vacuum pump motor drive device of the present invention.

[0031] Figure 2 This is a front view structural diagram of a vacuum pump in an embodiment of a large vacuum pump motor drive device of the present invention.

[0032] Figure 3 This is a schematic structural diagram of a vacuum pump in an embodiment of a large vacuum pump motor drive device of the present invention.

[0033] Figure 4 This is a side structural schematic diagram of an embodiment of a large vacuum pump motor drive device of the present invention.

[0034] Figure 5 This is a structural schematic diagram of an embodiment of a large vacuum pump motor drive device of the present invention.

[0035] Figure 6 This is a structural schematic diagram of the cooling mechanism in an embodiment of a large vacuum pump motor drive device of the present invention.

[0036] Figure 7This is a structural schematic diagram of a connecting assembly in an embodiment of a large vacuum pump motor drive device of the present invention.

[0037] Figure 8 This is a structural schematic diagram of an installation base frame in an embodiment of a large vacuum pump motor drive device of the present invention.

[0038] Figure 9 This is a schematic top view of the structure of the mounting base in an embodiment of a large vacuum pump motor drive device of the present invention.

[0039] Figure 10 This is a schematic structural diagram of a coupling in an embodiment of a large vacuum pump motor drive device of the present invention.

[0040] Figure 11 This is a schematic diagram of the control process in an embodiment of a large vacuum pump motor drive device of the present invention.

[0041] In the figure: 1. Vacuum pump; 2. Drive motor; 22. Driver; 3. Cooling mechanism; 31. Circulating water pump; 32. Air cooler; 33. Expansion kettle; 34. Cooling water tank; 35. Cooling pipe; 5. Mounting frame; 51. Connecting rod; 52. Mounting rod; 53. Mounting plate; 54. Support rod; 55. L-shaped plate; 551. Reinforcement plate; 56. Connecting assembly; 561. Connecting channel steel; 562. Z-shaped rod; 57. First mounting part; 58. Second mounting part; 59. Protective shell; 6. Coupling; 61. First terminal; 611. First connecting column; 62. Second terminal; 621. Second connecting column; 63. Buffer block; 631. Connecting groove. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] The embodiments of the present application provide a large vacuum pump motor drive device, a control method and a suction and pressure delivery vehicle, which can solve the problem in the prior art that the AC / DC universal suction and pressure delivery device will generate heat during use. In particular, when a large vacuum pump is used, a cooling device needs to be installed on the AC / DC universal suction and pressure delivery device, and it is difficult to adjust the power of the cooling device according to actual needs during use. The operation is complicated, and it is difficult to accurately adjust the cooling device, which may cause safety hazards.

[0044] like Figures 1-6As shown, on the one hand, the present application provides a large vacuum pump motor drive device, which includes:

[0045] A vacuum pump 1, which is used to absorb and discharge dust;

[0046] A drive motor 2 is connected to the vehicle battery and is connected to the vacuum pump 1 to drive the vacuum pump 1 to operate;

[0047] The cooling mechanism 3 includes an air cooler 32, a cooling water tank 34 and a cooling pipe 35. The cooling pipe 35 is covered on the drive motor 2 and is connected to the cooling water tank 34. The air cooler 32 is arranged at one end of the drive motor 2, and the cooling water tank 34 is located between the air cooler 32 and the drive motor 2. The air cooler 32 is used to cool the drive motor 2 and the cooling water tank 34.

[0048] When the vacuum pump motor drive device is used, the drive motor 2 is connected to the vehicle battery, the drive motor 2 is connected to the vacuum pump 1, the cooling pipe 35 is covered on the drive motor 2 and is connected to the cooling water tank 34, the air cooler 32 is set at one end of the drive motor 2, and the cooling water tank 34 is located between the air cooler 32 and the drive motor 2. The air cooler 32 is used to cool the drive motor 2 and the cooling water tank 34. When the temperature of the drive motor 2 is lower than the set value, the air cooler 32 directly cools the drive motor 2. When the temperature of the drive motor 2 is higher than the set value, the coolant starts to circulate through the cooling pipe 35 to cool the drive motor 2. The driving motor 2 and the air cooler 32 cool the coolant entering the cooling water tank 34, thereby ensuring the cooling effect at different temperatures. At the same time, when only a small amount of cooling is required, there is no need to start the liquid cooling cycle, which reduces energy consumption and solves the problem that the AC / DC universal suction and pressure delivery device in the prior art will generate heat during use. In particular, when a large vacuum pump is used, a cooling device needs to be installed on the AC / DC universal suction and pressure delivery device, and it is difficult to adjust the power of the cooling device according to actual needs during use. The operation is complicated, and it is difficult to accurately adjust the cooling device, which may cause safety hazards.

[0049] In this example, the vacuum pump 1 is a Roots vacuum pump. The air cooler 32 is connected to the cooling water tank 34. The drive motor 2 is a permanent magnet synchronous motor. The cooling water tank 34 is provided with a pipe for cooling water to pass through.

[0050] like Figure 6 As shown, in some optional embodiments, the cooling water tank 34 is provided with a plurality of spaced-apart long holes, which are used to allow the cold air from the air cooler 32 to pass through the cooling water tank 34 and act on the drive motor 2 .

[0051] In this embodiment, a plurality of long holes arranged at intervals are provided on the cooling water tank 34. The long holes are used to allow the cold air from the air cooler 32 to pass through the cooling water tank 34 and act on the drive motor 2, so that when only a small amount of cooling is required, there is no need to start the liquid cooling cycle, and the drive motor 2 can be directly cooled by the air cooler 32. The structure is simple and the effect is good. At the same time, the pipeline passes through the cooling water tank 34. When circulating liquid cooling is adopted, the air cooler 32 can also cool the cooling water tank 34 to achieve cooling of the coolant.

[0052] like Figure 1 、 Figure 4 and Figure 5 As shown, in some optional embodiments, a driver 22 is further provided on one side of the drive motor 2. The driver 22 is used to connect to the signal of the external control unit and to the drive motor 2. A heat exchange pipe is provided on the driver 22, and the heat exchange pipe is connected to the cooling water tank 34. The driver 22 is used to drive the drive motor 2 according to the target vacuum degree and control its speed to regulate the vacuum degree of the vacuum pump 1.

[0053] In this embodiment, a driver 22 is further provided on one side of the drive motor 2. The driver 22 is used to connect to the signal of the external control unit and to the drive motor 2. A heat exchange pipe is provided on the driver 22, and the heat exchange pipe is connected to the cooling water tank 34. The driver 22 is used to drive the drive motor 2 and control its speed according to the target vacuum degree to adjust the vacuum degree of the vacuum pump 1, so as to facilitate the control of the speed of the drive motor 2 by the external control unit, and then facilitate the control of the vacuum degree of the vacuum pump 1. At the same time, a heat exchange pipe is provided on the driver 22, which can facilitate the cooling of the driver 2.

[0054] like Figure 11 As shown, in this example, the external control unit is a PLC control module, which is used to control the speed of the drive motor 2 according to the target vacuum degree to adjust the vacuum degree of the vacuum pump 1, and adjust the cooling power of the cooling mechanism 3 through the cooling control system according to the target temperature of the drive motor 2. The real-time adjustment ensures the accuracy of the adjustment and avoids the situation where the vacuum degree is too large and the speed is too high and exceeds the maximum power requirement of the motor.

[0055] like Figure 5 and Figure 6 As shown, in some optional embodiments, the cooling mechanism 3 also includes a circulating water pump 31, which is connected to a cooling water tank 34 through a pipeline to provide coolant to the drive motor 2 and the driver 22. When the coolant flows from the circulating water pump 31 through the drive motor 2 and the driver 22, it passes through the cooling water tank 34 and is cooled by the air cooler 32 before flowing back to the circulating water pump 31.

[0056] In this embodiment, the cooling mechanism 3 also includes a circulating water pump 31, which is connected to the cooling water tank 34 through a pipeline to provide coolant to the drive motor 2 and the driver 22. When the coolant flows from the circulating water pump 31 through the drive motor 2 and the driver 22, it passes through the cooling water tank 34 and is cooled by the air cooler 32 before flowing back to the circulating water pump 31, facilitating liquid cooling circulation.

[0057] like Figure 5 and Figure 6 As shown, in some optional embodiments, the cooling mechanism 3 further includes an expansion kettle 33 , which is connected to the cooling water tank 34 and the circulating water pump 31 for observing and adding coolant in the cooling mechanism 3 .

[0058] In this embodiment, the cooling mechanism 3 also includes an expansion kettle 33, which is connected to the cooling water tank 34 and the circulating water pump 31 and is used to observe and add coolant in the cooling mechanism 3. The condition of the coolant can be observed in time, and when there is a lack of liquid, it can be added in time. At the same time, when the gas expansion pressure in the system is too high, the gas will be discharged in one direction.

[0059] In this example, the expansion kettle 33 is equipped with a water level sensor for liquid level control. When the water level is too low, the device will stop and an alarm will sound. The expansion kettle 33 is at the highest position of the cooling mechanism 3.

[0060] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 8 and Figure 9 As shown, in some optional embodiments, a mounting base 5 is further included, and the mounting base 5 includes:

[0061] Two spaced-apart connecting rods 51, the connecting rods 51 being used to connect to the vehicle chassis beam and being arranged along the vehicle chassis beam;

[0062] Two spaced-apart mounting rods 52 are perpendicular to the connecting rods 51 , one end of the mounting rod 52 is connected to one of the connecting rods 51 , and the other end extends out of the other connecting rod 51 . The drive motor 2 is disposed on the portion of the mounting rod 52 extending out of the other connecting rod 51 ;

[0063] The mounting plate 53 is provided at the portion where the mounting rod 52 and the connecting rod 51 are connected. The mounting plate 53 is used for mounting the vacuum pump 1 .

[0064] In this embodiment, the structure of the mounting base 5 is specifically described. The mounting base 5 includes two connecting rods 51, two mounting rods 52 and a mounting plate 53, wherein the two connecting rods 51 are arranged at intervals for connection to the vehicle chassis beam and are arranged along the vehicle chassis beam, the two mounting rods 52 are arranged at intervals, the mounting rods 52 are perpendicular to the connecting rods 51, one end of the mounting rod 52 is connected to one of the connecting rods 51, and the other end extends out of the other connecting rod 51, the drive motor 2 is arranged at the part where the mounting rod 52 extends out of the other connecting rod 51, the mounting plate 53 is arranged at the part where the mounting rod 52 is connected to the connecting rod 51, and the mounting plate 53 is used to install the vacuum pump 1, has a simple structure, is easy to manufacture, has a good integration effect, and reduces space occupancy.

[0065] In this example, the width of the mounting plate 53 along the length direction of the connecting rod 51 is greater than the distance between the two mounting rods 52. A support rod 54 is also provided between the two connecting rods 51. The support rod 54 is arranged along the length direction of the mounting rod 52 and is located on the lower side of the end of the mounting plate 53 extending out of the mounting rod 52.

[0066] In this example, one end of the connecting rod 51 is connected to the vehicle chassis frame through a first mounting member 57, and the other end is connected to the vehicle chassis frame through a second mounting member 58. The first mounting member 57 is located on the opposite side of the two connecting rods 51, and the second mounting member 58 is located on the side where the two connecting rods 51 are separated. The first mounting member 57 is divided into an upper mounting member and a lower mounting member. The upper mounting member is arranged on the connecting rod 51, and the lower mounting member is arranged on the vehicle chassis frame, and is connected by bolts. The second mounting member 58 is a fixed lock, which locks the connecting rod 51 and the vehicle chassis frame together.

[0067] like Figure 6 、 Figure 7 and Figure 8 As shown, in some optional embodiments, two relatively arranged L-shaped plates 55 are further included, and the L-shaped plates 55 are correspondingly arranged on the mounting rod 52. The drive motor 2 is arranged between the two L-shaped plates 55, and the driver 22 is arranged at the end of the mounting rod 52. The air cooler 32 is located above the driver 22 and is connected to the L-shaped plate 55 through a connecting component 56. The circulating water pump 31 is arranged on the connecting component 56, and the expansion kettle 33 is arranged on the upper side of the cooling water tank 34.

[0068] In this embodiment, the vacuum pump motor drive device also includes two relatively arranged L-shaped plates 55, the L-shaped plates 55 are correspondingly arranged on the mounting rod 52, the drive motor 2 is arranged between the two L-shaped plates 55, the driver 22 is arranged at the end of the mounting rod 52, the air cooler 32 is located above the driver 22, and is connected to the L-shaped plate 55 through a connecting component 56, the circulating water pump 31 is arranged on the connecting component 56, and the expansion kettle 33 is arranged on the upper side of the cooling water tank 34, and is integrated and installed to reduce the space occupied by the cooling mechanism 3 and the drive motor 2.

[0069] In this example, a plurality of reinforcing plates 551 are provided on the L-shaped plate 55 .

[0070] In this example, the connecting assembly 56 includes two connecting units respectively connected to the two L-shaped plates 55, and the connecting units include a connecting channel steel 561 and a Z-shaped rod 562. The connecting channel steel 561 is connected to the L-shaped plate 55 and to the cooling water tank 34. A circulating water pump 31 is provided on the connecting channel steel 561. One end of the Z-shaped rod 562 is fixed on the upper side of the connecting channel steel 561, and the other end is connected to the cooling water tank 34, which is convenient for fixing the air cooler 32 and the cooling water tank 34, so that the air cooler 32 is located above the driver 22, and the space between the air cooler 32 and the driver 22 is used for the passage of pipelines.

[0071] In this example, a protective shell 59 is further included. The protective shell 59 is provided on the driving motor 2 , and both ends of the protective shell 59 are connected to the upper side of the connecting channel steel 561 .

[0072] like Figure 6 and Figure 10 As shown, in some optional embodiments, the drive motor 2 is connected to the vacuum pump 1 through a coupling 6, and the coupling 6 includes:

[0073] A first terminal 61 connected to the rotating shaft of the drive motor 2. A side of the first terminal 61 away from the drive motor 2 is provided with a plurality of first connecting columns 611 arranged along the circumferential direction;

[0074] A second terminal 62 connected to the vacuum pump 1 . A side of the second terminal 62 away from the vacuum pump 1 is provided with a plurality of second connecting columns 621 arranged along the circumferential direction;

[0075] The buffer block 63 is arranged between the first terminal 61 and the second terminal 62. A plurality of connecting grooves 631 are provided on the buffer block 63. The first connecting column 611 and the second connecting column 621 correspond to the connecting grooves 631 one by one. The first connecting column 611 and the second connecting column 621 are cross-spaced and arranged in the connecting grooves 631.

[0076] In this embodiment, the drive motor 2 is connected to the vacuum pump 1 through a coupling 6, and the coupling 6 includes a first terminal 61, a second terminal 62 and a buffer block 63, wherein the first terminal 61 is connected to the rotating shaft of the drive motor 2, and the first terminal 61 is provided with a plurality of first connecting columns 611 arranged along the circumferential direction on the side away from the drive motor 2, the second terminal 62 is connected to the vacuum pump 1, and the second terminal 62 is provided with a plurality of second connecting columns 621 arranged along the circumferential direction on the side away from the vacuum pump 1, and the buffer block 63 is arranged between the first terminal 61 and the second terminal 62, and the buffer block 63 is provided with a plurality of connecting grooves 631, the first connecting columns 611 and the second connecting columns 621 correspond one-to-one to the connecting grooves 631, and the first connecting columns 611 and the second connecting columns 621 are cross-spaced and arranged in the connecting grooves 631, that is, the sum of the first connecting columns 611 and the second connecting columns 621 is the same as the number of connecting grooves 631, and the coupling 6 further reduces the installation space, making the distance between the vacuum pump 1 and the drive motor 2 closer.

[0077] like Figures 1-6 As shown, on the one hand, the present application also provides a control method for a large vacuum pump motor drive device, which is implemented using the above-mentioned large vacuum pump motor drive device and includes the following steps:

[0078] When the temperature of the drive motor 2 is lower than the set value, the air cooler 32 directly cools the drive motor 2;

[0079] When the temperature of the drive motor 2 is greater than a set value, the coolant begins to circulate through the cooling pipe 35 to cool the drive motor 2 , and the air cooler 32 cools the coolant entering the cooling water tank 34 .

[0080] When the vacuum pump motor drive device is used, the drive motor 2 is connected to the vehicle battery, the drive motor 2 is connected to the vacuum pump 1, the cooling pipe 35 is covered on the drive motor 2 and is connected to the cooling water tank 34, the air cooler 32 is set at one end of the drive motor 2, and the cooling water tank 34 is located between the air cooler 32 and the drive motor 2. The air cooler 32 is used to cool the drive motor 2 and the cooling water tank 34. When the temperature of the drive motor 2 is lower than the set value, the air cooler 32 directly cools the drive motor 2. When the temperature of the drive motor 2 is higher than the set value, the coolant starts to circulate through the cooling pipe 35 to cool the drive motor 2. The driving motor 2 and the air cooler 32 cool the coolant entering the cooling water tank 34, thereby ensuring the cooling effect at different temperatures. At the same time, when only a small amount of cooling is required, there is no need to start the liquid cooling cycle, which reduces energy consumption and solves the problem that the AC / DC universal suction and pressure delivery device in the prior art will generate heat during use. In particular, when a large vacuum pump is used, a cooling device needs to be installed on the AC / DC universal suction and pressure delivery device, and it is difficult to adjust the power of the cooling device according to actual needs during use. The operation is complicated, and it is difficult to accurately adjust the cooling device, which may cause safety hazards.

[0081] In this example, when the temperature is too low, the air cooler 32 stops running.

[0082] like Figures 1-6 As shown, on the other hand, the present application also provides a suction and pressure conveying vehicle, which includes the above-mentioned large vacuum pump motor drive device.

[0083] When the vacuum pump motor drive device is used, the drive motor 2 is connected to the vehicle battery, the drive motor 2 is connected to the vacuum pump 1, the cooling pipe 35 is covered on the drive motor 2 and is connected to the cooling water tank 34, the air cooler 32 is set at one end of the drive motor 2, and the cooling water tank 34 is located between the air cooler 32 and the drive motor 2. The air cooler 32 is used to cool the drive motor 2 and the cooling water tank 34. When the temperature of the drive motor 2 is lower than the set value, the air cooler 32 directly cools the drive motor 2. When the temperature of the drive motor 2 is higher than the set value, the coolant starts to circulate through the cooling pipe 35 to cool the drive motor 2. The driving motor 2 and the air cooler 32 cool the coolant entering the cooling water tank 34, thereby ensuring the cooling effect at different temperatures. At the same time, when only a small amount of cooling is required, there is no need to start the liquid cooling cycle, which reduces energy consumption and solves the problem that the AC / DC universal suction and pressure delivery device in the prior art will generate heat during use. In particular, when a large vacuum pump is used, a cooling device needs to be installed on the AC / DC universal suction and pressure delivery device, and it is difficult to adjust the power of the cooling device according to actual needs during use. The operation is complicated, and it is difficult to accurately adjust the cooling device, which may cause safety hazards.

[0084] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0085] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0086] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A large vacuum pump motor drive device, characterized in that: include: A vacuum pump (1) for sucking and discharging dust; A drive motor (2) is connected to a vehicle battery, and the drive motor (2) is connected to the vacuum pump (1) to drive the vacuum pump (1) to operate; A cooling mechanism (3), comprising an air cooler (32), a cooling water tank (34) and a cooling pipe (35), wherein the cooling pipe (35) is wrapped around the drive motor (2) and communicated with the cooling water tank (34), the air cooler (32) is arranged at one end of the drive motor (2), the cooling water tank (34) is located between the air cooler (32) and the drive motor (2), and the air cooler (32) is used to cool the drive motor (2) and the cooling water tank (34); The operating logic of the cooling mechanism (3) is as follows: when the temperature of the drive motor (2) is lower than a set value, the air cooler (32) directly cools the drive motor (2); When the temperature of the drive motor (2) is greater than a set value, the coolant begins to circulate through the cooling pipe (35) to cool the drive motor (2), and the air cooler (32) cools the coolant entering the cooling water tank (34); A driver (22) is further provided on one side of the drive motor (2), the driver (22) being used for signal connection with an external control unit and connected to the drive motor (2), the driver (22) being provided with a heat exchange pipe, the heat exchange pipe being in communication with the cooling water tank (34), the driver (22) being used for driving the drive motor (2) and controlling its rotation speed according to a target vacuum degree, so as to regulate the vacuum degree of the vacuum pump (1); The external control unit is a PLC control module, which is used to control the rotation speed of the drive motor (2) according to the target vacuum degree to adjust the vacuum degree of the vacuum pump (1), and adjust the cooling power of the cooling mechanism (3) through the cooling control system according to the target temperature of the drive motor (2); The cooling mechanism (3) further includes a circulating water pump (31), which is connected to the cooling water tank (34) through a pipeline to provide cooling liquid to the drive motor (2) and the driver (22). After the cooling liquid flows from the circulating water pump (31) through the drive motor (2) and the driver (22), it is cooled by the air cooler (32) through the cooling water tank (34) and then flows back to the circulating water pump (31). The cooling mechanism (3) further comprises an expansion kettle (33), wherein the expansion kettle (33) is in communication with the cooling water tank (34) and the circulating water pump (31), and is used for observing and adding the coolant in the cooling mechanism (3); It also includes a mounting base (5), the mounting base (5) including: Two spaced-apart connecting rods (51), the connecting rods (51) being used to connect to a vehicle chassis beam and being arranged along the vehicle chassis beam; Two spaced-apart mounting rods (52), the mounting rods (52) being perpendicular to the connecting rods (51), one end of the mounting rod (52) being connected to one of the connecting rods (51), and the other end extending out of the other connecting rod (51), the driving motor (2) being arranged at the portion of the mounting rod (52) extending out of the other connecting rod (51); A mounting plate (53) is provided at a portion where the mounting rod (52) and the connecting rod (51) are connected, and the mounting plate (53) is used to mount the vacuum pump (1); It also includes two L-shaped plates (55) arranged opposite to each other, the L-shaped plates (55) being correspondingly arranged on the mounting rod (52), the drive motor (2) being arranged between the two L-shaped plates (55), the driver (22) being arranged at the end of the mounting rod (52), the air cooler (32) being located above the driver (22) and being connected to the L-shaped plates (55) via a connecting assembly (56), the circulating water pump (31) being arranged on the connecting assembly (56), and the expansion kettle (33) being arranged on the upper side of the cooling water tank (34); The connecting assembly (56) includes two connecting units connected to the two L-shaped plates (55) respectively, and the connecting unit includes a connecting channel steel (561) and a Z-shaped rod (562). The connecting channel steel (561) is connected to the L-shaped plate (55) and is connected to the cooling water tank (34). A circulating water pump (31) is provided on the connecting channel steel (561). One end of the Z-shaped rod (562) is fixed to the upper side of the connecting channel steel (561) and the other end is connected to the cooling water tank (34), so as to facilitate the fixing of the air cooler (32) and the cooling water tank (34), so that the air cooler (32) is located above the driver (22), and the space between the air cooler (32) and the driver (22) is used for the passage of pipelines.

2. A large vacuum pump motor drive device according to claim 1, characterized in that: The cooling water tank (34) is provided with a plurality of long holes arranged at intervals, and the long holes are used to allow the cold air of the air cooler (32) to pass through the cooling water tank (34) and act on the drive motor (2).

3. A large vacuum pump motor drive device according to claim 1, characterized in that: The drive motor (2) is connected to the vacuum pump (1) via a coupling (6), and the coupling (6) comprises: a first terminal (61) connected to the rotating shaft of the drive motor (2); a side of the first terminal (61) away from the drive motor (2) being provided with a plurality of first connecting columns (611) arranged along the circumferential direction; a second terminal (62) connected to the vacuum pump (1), wherein a side of the second terminal (62) away from the vacuum pump (1) is provided with a plurality of second connecting columns (621) arranged along the circumferential direction; A buffer block (63) is arranged between the first terminal (61) and the second terminal (62), and a plurality of connection grooves (631) are provided on the buffer block (63), the first connection pillars (611) and the second connection pillars (621) correspond to the connection grooves (631) one by one, and the first connection pillars (611) and the second connection pillars (621) are arranged in a cross-spaced manner in the connection grooves (631).

4. A control method for a large vacuum pump motor drive device, characterized in that: The method is implemented using a large vacuum pump motor drive device according to any one of claims 1 to 3, comprising the following steps: When the temperature of the drive motor (2) is lower than a set value, the air cooler (32) directly cools the drive motor (2); When the temperature of the drive motor (2) is greater than a set value, the coolant begins to circulate through the cooling pipe (35) to cool the drive motor (2), and the air cooler (32) cools the coolant entering the cooling water tank (34).

5. A suction and pressure conveying vehicle, characterized in that: It comprises a large vacuum pump motor drive device as described in any one of claims 1-3.

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