Permanent magnet synchronous traction machine

Abstract

The utility model relates to the technical field of traction machines, in particular to a permanent magnet synchronous traction machine which comprises a permanent magnet synchronous traction machine body, a traction wheel for moving a steel rope is arranged on the outer side of the permanent magnet synchronous traction machine body, and a fixing frame for fixing a fan is connected to the outer portion of the permanent magnet synchronous traction machine body through bolts. A cooling cavity for absorbing heat of the permanent magnet synchronous traction machine body is formed in the fixing frame, and a heat conduction layer for transferring heat on the permanent magnet synchronous traction machine body is fixed to the outer side of the cooling cavity through screws. Through the arrangement of the fixing frame, the fan, the heat conduction cavity, the heat conduction layer, the arc frame, the air pump, the through hole and the branch pipe, the permanent magnet synchronous traction machine solves the problems that when an existing permanent magnet synchronous traction machine is used, the heat dissipation efficiency of the permanent magnet synchronous traction machine body is low, and the heat dissipation efficiency is high. And meanwhile, foreign matters on the steel rope and the traction wheel are inconvenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of traction machines, in particular to a permanent magnet synchronous traction machine. Background Art

[0002] The permanent magnet synchronous traction machine is commonly known as a non-reduction gearbox transmission. It is installed in the elevator machine room or the elevator shaft, generally above the top floor of the building or inside the shaft. It is the power device of the elevator. The permanent magnet synchronous traction machine directly drives the rope wheel by the main machine without a reduction gearbox device. The permanent magnet synchronous traction machine is a new type of bearingless motor that applies bearingless technology to the permanent magnet synchronous traction machine.

[0003] However, when the existing permanent magnet synchronous traction machine is in use, the main body of the permanent magnet synchronous traction machine will generate a relatively high temperature during operation. At the same time, the elevator shaft is in a relatively enclosed state, and the temperature on the main body of the permanent magnet synchronous traction machine cannot dissipate quickly. If the main body of the permanent magnet synchronous traction machine is in a high-temperature environment for a long time, it will have a certain impact on the service life of the main body of the permanent magnet synchronous traction machine. At the same time, when the traction wheel drives the steel rope to move, foreign objects in the elevator shaft are easily adhered to the steel rope and the traction wheel. If they are not removed in time, it will have a certain impact on the movement of the traction wheel driving the steel rope. Therefore, a permanent magnet synchronous traction machine is provided. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a permanent magnet synchronous traction machine. By setting a fixing frame, a fan, a heat conduction cavity, a heat conduction layer, an arc-shaped frame, an air pump, through holes and branch pipes, the utility model solves the problems that the heat dissipation efficiency of the main body of the existing permanent magnet synchronous traction machine is low during use, and it is inconvenient to clean foreign objects on the steel rope and the traction wheel.

[0005] The technical solution adopted by the utility model to solve its technical problems is a permanent magnet synchronous traction machine, including a permanent magnet synchronous traction machine main body. A traction wheel for moving the steel rope is arranged outside the permanent magnet synchronous traction machine main body. A fixing frame for fixing the fan is bolted to the outside of the permanent magnet synchronous traction machine main body. A cooling cavity for absorbing heat from the permanent magnet synchronous traction machine main body is arranged inside the fixing frame. A heat conduction layer for transferring the heat on the permanent magnet synchronous traction machine main body is screwed and fixed to the outside of the cooling cavity. An arc-shaped frame for protecting the traction wheel is bolted to the outside of the permanent magnet synchronous traction machine main body. An air pump for generating gas is screwed and fixed to the outside of the arc-shaped frame. A branch pipe connected to the arc-shaped frame is screwed and fixed to the outside of the air pump. A diversion cavity for making the gas generated by the air pump flow is arranged inside the arc-shaped frame. Through holes for blowing air on the surface of the traction wheel are opened on the inner side of the arc-shaped frame. A fixing block for fixing the cleaning brush is screwed and fixed to the outside of the arc-shaped frame.

[0006] By adopting the above technical solution, when the traction wheel on the permanent magnet synchronous traction machine body drives the steel rope to move, the steel rope is first passed through the fixing block outside the arc frame, then placed in the groove on the traction wheel, and then the traction wheel drives the steel rope to move. Then, as the steel rope moves in the fixing block, the cleaning brush in the fixing block brushes the surface of the steel rope, preventing foreign objects adhered to the steel rope from coming into contact with the traction wheel. At the same time, the air pump outside the arc frame transports gas through the branch pipe into the diversion cavity inside the arc frame, and then the through holes opened inside the arc frame blow air on the surfaces of the traction wheel and the steel rope, thereby preventing foreign objects from adhering to the surfaces of the traction wheel and the steel rope and reducing the heat on the surfaces of the traction wheel and the steel rope.

[0007] When the permanent magnet synchronous traction machine body works, the heat conducting layer in the fixing frame transfers the heat on the permanent magnet synchronous traction machine body. Subsequently, the heat is transferred to the cooling cavity in the fixing frame, and the heat conducting oil in the cooling cavity absorbs the heat. Then, the fan on the fixing frame speeds up the air flow rate on the surface of the cooling cavity, discharging the heat in the cooling cavity to the outside, thus facilitating the heat dissipation treatment of the permanent magnet synchronous traction machine body.

[0008] Specifically, a filter screen for preventing foreign objects from entering the fan is fixed to the outside of the fan by screws.

[0009] By adopting the above technical solution, the filter screen fixed to the outside of the fan prevents foreign objects from the outside from entering the fan, avoiding damage to the internal components of the fan.

[0010] Specifically, a fixing pipe A extending into the cooling cavity is inserted into the outside of the fixing frame, and a fixing pipe B extending to the outside of the fixing frame is inserted into the bottom of the cooling cavity.

[0011] By adopting the above technical solution, when the cooling oil in the cooling cavity needs to be replaced, open the fixing pipe B at the bottom of the fixing frame to drain the cooling oil in the cooling cavity inside the fixing frame, then close the fixing pipe B. Subsequently, open the fixing pipe A at the top of the fixing frame and add cooling oil into the fixing pipe A, and then close the fixing pipe A, thus facilitating the replacement of the cooling oil in the cooling cavity.

[0012] Specifically, the heat conducting layer is made of heat conducting fins.

[0013] By adopting the above technical solution, the heat conducting layer made of heat conducting fins in the fixing frame transfers the heat on the permanent magnet synchronous traction machine body, facilitating the heat dissipation treatment of the permanent magnet synchronous traction machine body.

[0014] Specifically, the input ends of the fan and the air pump are both electrically connected to the output end of an external power supply.

[0015] By adopting the above technical solution, by connecting to an external power supply, the electrical equipment works normally.

[0016] The beneficial effects of the present utility model:

[0017] (1) A permanent magnet synchronous traction machine described in the present utility model. When the traction wheel on the permanent magnet synchronous traction machine body drives the steel rope to move, first pass the steel rope through the fixing block outside the arc frame, then place the steel rope into the groove on the traction wheel. Subsequently, the traction wheel drives the steel rope to move, and then the steel rope moves within the fixing block. The cleaning brush in the fixing block brushes the surface of the steel rope to prevent foreign objects adhered to the steel rope from contacting the traction wheel. At the same time, the air pump outside the arc frame transports gas to the diversion cavity inside the arc frame through the branch pipe, and then the through holes opened in the arc frame blow air on the surfaces of the traction wheel and the steel rope, thereby preventing external foreign objects from adhering to the surfaces of the traction wheel and the steel rope and reducing the heat on the surfaces of the traction wheel and the steel rope.

[0018] (2) A permanent magnet synchronous traction machine described in the present utility model. When the permanent magnet synchronous traction machine body works, the heat conducting layer in the fixing frame transfers the heat on the permanent magnet synchronous traction machine body. Subsequently, the heat is transferred to the cooling cavity in the fixing frame, and the heat conducting oil in the cooling cavity absorbs the heat. Then, the fan on the fixing frame accelerates the air flow speed on the surface of the cooling cavity, enabling the heat in the cooling cavity to be discharged outward, thereby facilitating the heat dissipation treatment of the permanent magnet synchronous traction machine body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0020] Figure 1 is a schematic diagram of the overall structure of a permanent magnet synchronous traction machine of the present utility model;

[0021] Figure 2 is a schematic diagram of a partial internal structure of the fixing frame of a permanent magnet synchronous traction machine of the present utility model;

[0022] Figure 3 is a schematic diagram of the internal structure of the fixing block of a permanent magnet synchronous traction machine of the present utility model;

[0023] Figure 4 is a schematic diagram of the internal structure of the arc frame of a permanent magnet synchronous traction machine of the present utility model;

[0024] In the figure: 1, fixing frame; 2, permanent magnet synchronous traction machine body; 3, heat conducting layer; 4, cooling cavity; 5, arc frame; 6, fan; 7, branch pipe; 8, air pump; 9, through hole; 10, traction wheel; 11, cleaning brush; 12, fixing block; 13, diversion cavity; 14, fixing pipe B; 15, fixing pipe A; 16, filter screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further elaborated below in conjunction with specific embodiments.

[0026] To dissipate heat from the permanent magnet synchronous traction machine main body 2, as an embodiment of the present invention, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a permanent magnet synchronous traction machine described in the present invention includes a permanent magnet synchronous traction machine main body 2. An elevator sheave 10 for moving a steel rope is arranged outside the permanent magnet synchronous traction machine main body 2. A fixing frame 1 for fixing a fan 6 is bolted to the outside of the permanent magnet synchronous traction machine main body 2. A cooling cavity 4 for absorbing heat from the permanent magnet synchronous traction machine main body 2 is arranged inside the fixing frame 1. A heat conducting layer 3 for transferring the heat on the permanent magnet synchronous traction machine main body 2 is screwed and fixed outside the cooling cavity 4. An arc-shaped frame 5 for protecting the elevator sheave 10 is bolted to the outside of the permanent magnet synchronous traction machine main body 2. An air pump 8 for generating gas is screwed and fixed outside the arc-shaped frame 5. A branch pipe 7 connected to the arc-shaped frame 5 is screwed and fixed outside the air pump 8. A diversion cavity 13 for making the gas generated by the air pump 8 flow is arranged inside the arc-shaped frame 5. A through hole 9 for blowing air on the surface of the elevator sheave 10 is opened on the inner side of the arc-shaped frame 5. A fixing block 12 for fixing a cleaning brush 11 is screwed and fixed outside the arc-shaped frame 5.

[0027] During use, when the elevator sheave 10 on the permanent magnet synchronous traction machine main body 2 drives the steel rope to move, first pass the steel rope through the fixing block 12 outside the arc-shaped frame 5, then place the steel rope in the groove on the elevator sheave 10, and then the elevator sheave 10 drives the steel rope to move. Then, as the steel rope moves in the fixing block 12, the cleaning brush 11 in the fixing block 12 brushes the surface of the steel rope, preventing foreign matters adhered to the steel rope from coming into contact with the elevator sheave 10. At the same time, the air pump 8 outside the arc-shaped frame 5 conveys gas into the diversion cavity 13 inside the arc-shaped frame 5 through the branch pipe 7, and then the through hole 9 opened in the arc-shaped frame 5 blows air on the surfaces of the elevator sheave 10 and the steel rope, thereby preventing foreign matters from adhering to the surfaces of the elevator sheave 10 and the steel rope and reducing the heat on the surfaces of the elevator sheave 10 and the steel rope;

[0028] When the permanent magnet synchronous traction machine main body 2 is working, the heat conducting layer 3 in the fixing frame 1 transfers the heat on the permanent magnet synchronous traction machine main body 2, and then the heat is transferred into the cooling cavity 4 in the fixing frame 1. The heat conducting oil in the cooling cavity 4 absorbs the heat, and then the fan 6 on the fixing frame 1 accelerates the air flow speed on the surface of the cooling cavity 4, discharging the heat in the cooling cavity 4 to the outside, thus facilitating the heat dissipation treatment of the permanent magnet synchronous traction machine main body 2.

[0029] To prevent the internal components of the fan 6 from being damaged, exemplarily, as shown in Figure 1 shown, the present invention further includes a filter screen 16 screwed and fixed outside the fan 6 to prevent foreign matters from entering the inside of the fan 6.

[0030] During use, the filter screen 16 fixed outside the fan 6 prevents foreign objects from entering the interior of the fan 6, avoiding damage to the components inside the fan 6.

[0031] For replacing the cooling oil in the cooling cavity 4, by way of example, as Figure 1 shown, the present utility model further includes a fixing pipe A15 inserted on the outside of the fixing frame 1 and extending into the cooling cavity 4, and a fixing pipe B14 inserted at the bottom of the cooling cavity 4 and extending outside the fixing frame 1.

[0032] During use, when replacing the cooling oil in the cooling cavity 4, open the fixing pipe B14 at the bottom of the fixing frame 1 to drain the cooling oil in the cooling cavity 4 inside the fixing frame 1, then close the fixing pipe B14, and subsequently open the fixing pipe A15 at the top of the fixing frame 1, add cooling oil into the fixing pipe A15, and then close the fixing pipe A15, thus facilitating the replacement of the cooling oil in the cooling cavity 4.

[0033] For dissipating heat from the permanent magnet synchronous traction machine main body 2, by way of example, as Figure 2 shown, the present utility model further includes that the heat conducting layer 3 is made of heat conducting fins.

[0034] During use, the heat conducting layer 3 made of heat conducting fins in the fixing frame 1 transfers the heat on the permanent magnet synchronous traction machine main body 2, facilitating the heat dissipation treatment of the permanent magnet synchronous traction machine main body 2.

[0035] For enabling the electrical equipment to work properly, by way of example, as Figure 1 shown, the present utility model further includes that the input ends of the fan 6 and the air pump 8 are electrically connected to the output end of an external power supply.

[0036] During use, by connecting to an external power supply, the electrical equipment works properly.

[0037] When in use of the present utility model, when the traction wheel 10 on the permanent magnet synchronous traction machine main body 2 drives the steel rope to move, first pass the steel rope through the fixing block 12 outside the arc-shaped frame 5, then place the steel rope in the groove on the traction wheel 10, and then the traction wheel 10 drives the steel rope to move. Then, as the steel rope moves in the fixing block 12, the cleaning brush 11 in the fixing block 12 brushes the surface of the steel rope, avoiding contact between foreign objects adhering to the steel rope and the traction wheel 10. At the same time, the air pump 8 outside the arc-shaped frame 5 conveys gas into the diversion cavity 13 inside the arc-shaped frame 5 through the branch pipe 7, and then the through holes 9 formed in the arc-shaped frame 5 blow air on the surfaces of the traction wheel 10 and the steel rope, thereby preventing foreign objects from adhering to the surfaces of the traction wheel 10 and the steel rope and reducing the heat on the surfaces of the traction wheel 10 and the steel rope;

[0038] When the permanent magnet synchronous traction machine main body 2 works, the heat conduction layer 3 in the fixing frame 1 transfers the heat on the permanent magnet synchronous traction machine main body 2. Subsequently, the heat is transferred into the cooling cavity 4 in the fixing frame 1. The heat conduction oil in the cooling cavity 4 absorbs the heat. Then, the fan 6 on the fixing frame 1 accelerates the air flow speed on the surface of the cooling cavity 4, so that the heat in the cooling cavity 4 is discharged outward, thus facilitating the heat dissipation treatment of the permanent magnet synchronous traction machine main body 2;

[0039] The filter screen 16 fixed outside the fan 6 prevents foreign objects from entering the inside of the fan 6, avoiding damage to the internal components of the fan 6;

[0040] When the cooling oil in the cooling cavity 4 needs to be replaced, open the fixing pipe B14 at the bottom of the fixing frame 1 to discharge the cooling oil in the cooling cavity 4 inside the fixing frame 1. Then close the fixing pipe B14. Subsequently, open the fixing pipe A15 at the top of the fixing frame 1 and add cooling oil into the fixing pipe A15. Then close the fixing pipe A15, thus facilitating the replacement of the cooling oil in the cooling cavity 4;

[0041] The heat conduction layer 3 made of heat conduction fins in the fixing frame 1 transfers the heat on the permanent magnet synchronous traction machine main body 2, facilitating the heat dissipation treatment of the permanent magnet synchronous traction machine main body 2.

[0042] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet synchronous traction machine, characterized in that: The invention comprises a permanent magnet synchronous traction machine body (2), a traction wheel (10) for moving a steel rope is arranged outside the permanent magnet synchronous traction machine body (2), a fixing frame (1) for fixing a fan (6) is connected to the outside of the permanent magnet synchronous traction machine body (2) by bolts, a cooling chamber (4) for absorbing heat from the permanent magnet synchronous traction machine body (2) is arranged inside the fixing frame (1), a heat conducting layer (3) for transferring heat from the permanent magnet synchronous traction machine body (2) is fixed to the outside of the cooling chamber (4) by screws, and the permanent magnet synchronous traction machine body ( 2) An arc frame (5) for protecting the traction wheel (10) is connected with external bolts, an air pump (8) for generating gas is fixed to the arc frame (5) with screws on the outside, a branch pipe (7) connected to the arc frame (5) is fixed to the outside of the air pump (8) with screws, a guide cavity (13) for allowing the gas generated by the air pump (8) to flow is arranged inside the arc frame (5), a through hole (9) for blowing air to the surface of the traction wheel (10) is opened on the inside of the arc frame (5), and a fixing block (12) for fixing a cleaning brush (11) is fixed to the outside of the arc frame (5) with screws.

2. A permanent magnet synchronous traction machine according to claim 1, characterized in that: A filter (16) is screwed onto the outside of the fan (6) to prevent foreign matter from entering the inside of the fan (6).

3. A permanent magnet synchronous traction machine according to claim 1, characterized in that: A fixing pipe A (15) extending to the cooling chamber (4) is plugged into the outside of the fixing frame (1), and a fixing pipe B (14) extending to the outside of the fixing frame (1) is plugged into the bottom of the cooling chamber (4).

4. A permanent magnet synchronous traction machine according to claim 1, characterized in that: The heat-conducting layer (3) is made of heat-conducting fins.

5. A permanent magnet synchronous traction machine according to claim 1, characterized in that: The input ends of the fan (6) and the air pump (8) are both electrically connected to the output end of an external power source.

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