Mine hoist heat dissipation mechanism with built-in permanent magnet motor

Abstract

The utility model provides a permanent magnet motor built-in mine hoist heat dissipation mechanism, the heat dissipation mechanism is located in a hoist, the hoist comprises a main shaft, a stator arranged on the outer side of the main shaft and a rotor located on the outer side of the stator, the rotor is rotatably arranged on the main shaft, a winding drum is arranged on the rotor, and a shaft sleeve is arranged on the main shaft. The heat dissipation mechanism comprises a water inlet cavity and a water drainage cavity which are arranged on the shaft sleeve, and further comprises a hollow cavity communicated with the water inlet cavity and the water drainage cavity, and the hollow cavity is arranged in the side wall of the stator. By matching with the hollow cavity and the hollow cavity communicated with the hollow cavity, efficient heat dissipation operation of the elevator is achieved, it is guaranteed that the elevator can always keep the normal operation temperature under high-temperature, high-load and long-time work, and the safety and stability performance of the elevator in the lifting operation are greatly improved; the working efficiency is improved; and the service life of the elevator is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat dissipation equipment technical field, concretely relates to a mine hoist heat dissipation mechanism of permanent magnet motor built-in type. BACKGROUND

[0002] The mine hoist is the "throat" passageway connecting the upper and lower shafts, and is the key equipment for transporting mine materials, equipment and personnel. At present, the mine hoists commonly used at home and abroad are mainly composed of a motor, a speed reducer, a shaft coupling, a brake device, a main shaft device, a hydraulic station, a lubrication station, an electric control system and the like. Such mine hoists have problems such as large maintenance amount, low transmission efficiency, large equipment installation area, high energy consumption, large capital investment and the like. Based on this, the permanent magnet motor built-in type mine hoist is developed. Such mine hoist eliminates the speed reducer, the shaft coupling, the lubrication station and the like, and has higher transmission efficiency. Most of the existing permanent magnet outer rotor hoists are forced air cooling. This method is only suitable for low temperature, small load, low load, short time operation. When the hoist operates in high temperature, long time, large load or overload, the air cooling cannot meet the heat dissipation demand of the permanent magnet motor. At this time, the hoist needs to be stopped until it is cooled to a safe temperature, and then the hoist continues to operate, which greatly reduces the working efficiency of the hoist. SUMMARY

[0003] Therefore, the utility model provides a mine hoist heat dissipation mechanism of permanent magnet motor built-in type. The cooling demand of the hoist can be met by replacing the traditional air cooling method with water cooling, the stability of the permanent magnet motor under the working conditions of high temperature, high load and long time is ensured, and the safety and efficiency of the hoist are greatly improved.

[0004] To solve the above technical problems, the utility model provides a mine hoist heat dissipation mechanism of permanent magnet motor built-in type. The heat dissipation mechanism is located in the hoist. The hoist comprises a main shaft, a stator arranged on the outer side of the main shaft and a rotor arranged on the outer side of the stator. The rotor is rotatably arranged on the main shaft. The rotor is provided with a winding drum. The main shaft is provided with a shaft sleeve. The heat dissipation mechanism comprises a water inlet cavity and a drainage cavity arranged on the shaft sleeve. The heat dissipation mechanism further comprises a hollow cavity in communication with the water inlet cavity and the drainage cavity. The hollow cavity is arranged in the side wall of the stator. The utility model can inject cooling liquid into the water inlet cavity arranged on the shaft sleeve. The hollow cavity and the hollow cavity in communication with the hollow cavity can realize efficient heat dissipation of the hoist. The hoist can always maintain normal operating temperature under the working conditions of high temperature, high load and long time. The safety and stability of the hoist are greatly improved. The working efficiency and service life of the hoist are improved.

[0005] The water inlet cavity comprises a water inlet inlet arranged on the shaft sleeve outside the end cover and a water inlet outlet arranged on the shaft sleeve and communicated with the water inlet inlet inside the end cover, and the water drainage cavity comprises a water drainage inlet arranged on the shaft sleeve inside the end cover and a water drainage outlet arranged on the shaft sleeve and communicated with the water drainage inlet outside the end cover, the utility model can realize that the cooling liquid in the circulating water tank is pumped into the water inlet inlet on the water inlet cavity through the water pump, flows into the water inlet outlet through the water inlet inlet, flows into the inlet of the hollow cavity through the water inlet outlet, is discharged to the water drainage inlet of the water drainage cavity through the outlet of the hollow cavity, flows into the water drainage outlet through the water drainage inlet, and finally flows into the circulating water tank through the water drainage outlet, if necessary, cooling ice or cold air can be injected into the circulating water tank to realize efficient cooling operation of the cooling liquid in the circulating water tank and ensure that the temperature of the cooling liquid pumped by the water pump is always in the best cooling state.

[0006] The stator is provided with a connecting disc inside, the main shaft penetrates through the connecting disc, the connecting disc is welded on the main shaft, the hollow cavity is internally provided with a serpentine pipe, the hollow cavity is filled with a heat conducting medium, the water inlet end of the serpentine pipe is communicated with the water inlet outlet of the water inlet cavity, and the water outlet end of the serpentine pipe is communicated with the water drainage inlet of the water drainage cavity, the utility model can realize that the heat generated by the elevator is smoothly guided to the outer wall of the serpentine pipe through the heat conducting medium in the hollow cavity, efficient heat exchange operation is carried out in cooperation with the cooling liquid flowing in the serpentine pipe, good cooling effect is achieved, and the circulation path of the cooling liquid entering the hollow cavity is appropriately lengthened through the serpentine pipe arranged in the hollow cavity, the circulation flow path of the cooling liquid is greatly increased, the cooling effect of the cooling liquid is improved to a certain extent through the lengthened circulation flow time and path of the cooling liquid.

[0007] The both ends of the winding drum are respectively provided with end covers for sealing the main shaft, and the heat dissipation mechanism further comprises heat dissipation channels arranged on the end covers, the heat dissipation channels comprise at least two waist-shaped holes arranged on the end covers and ventilation holes uniformly distributed on the end covers, and the utility model can increase the air flow efficiency of air in the process of rotation of the winding drum through the heat dissipation channels, when the winding drum of the elevator rotates, natural wind enters the elevator through the waist-shaped holes and the ventilation holes, convective exchange operation of heat in the elevator is realized, and the effect of air cooling is achieved.

[0008] The outer side of the heat dissipation channel is provided with a ventilation cover, a through hole is arranged on the ventilation cover, and a filter screen is arranged in the through hole, the utility model can realize isolation and blocking of dust in the air through the filter screen arranged on the ventilation cover, prevent the dust from entering the elevator, avoid subsequent cleaning troubles, and prevent the heat generated in the working process of the elevator from being difficult to dissipate and discharge due to easy accumulation of the dust, the heat in the elevator cannot be efficiently dissipated, and a certain safety hazard problem exists.

[0009] The ventilation cover is detachably arranged outside the end cover outside the heat dissipation channel, which facilitates the operator to quickly detach and install the ventilation cover, and is more convenient to operate.

[0010] The outer side of the ventilation cover is provided with a handle, and the handle facilitates the operator to hold and operate.

[0011] Compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0012] 1、The water inlet cavity and the water outlet cavity and the hollow structure formed on the shaft sleeve of the main shaft constitute a complete water cooling channel, the cooling medium is injected through the water inlet cavity, flows into the hollow structure through the water inlet cavity, is discharged into the water outlet cavity through the hollow structure, and is discharged into the circulating water tank through the water outlet cavity after cooling to continue participating in the water cooling circulation operation, thereby greatly improving the cooling efficiency of the heat generated by the elevator, ensuring that the elevator is always in a safe, reliable and stable operation state, and greatly improving the service life of the elevator.

[0013] 2、The end cover arranged on the winding drum can block dust from the outside, prevent the dust from entering the inside of the elevator and causing accumulation, further affect the heat dissipation efficiency and normal work of the elevator, and can realize natural air cooling through the heat dissipation channel arranged on the winding drum, thereby greatly enhancing the heat dissipation capacity of the elevator and ensuring efficient and stable operation of the elevator.

[0014] 3、The serpentine pipe arranged in the hollow structure can extend the flow path of the cooling medium, thereby greatly improving the cooling effect of the cooling medium, and cooperating with the heat-conducting medium filled in the middle hole structure to realize efficient conduction of the heat generated by the elevator, thereby further improving the heat dissipation capacity of the cooling liquid in the serpentine pipe to the elevator.

[0015] 4、The filter screen arranged on the ventilation cover can block dust in the air, and the detachable ventilation cover can facilitate quick disassembly and cleaning of the blocked filter screen and installation operation after cleaning, thereby being more convenient and efficient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the mine elevator heat dissipation mechanism of the permanent magnet motor built-in type mine elevator of the present application;

[0017] Figure 2 is a front view of the mine elevator heat dissipation mechanism of the permanent magnet motor built-in type mine elevator of the present application;

[0018] Figure 3 is a structural schematic view of the mine elevator heat dissipation mechanism of the permanent magnet motor built-in type mine elevator of the present application;Figure 2 Sectional view at A-A;

[0019] Figure 4 The utility model discloses Figure 3 Enlarged view at B;

[0020] Figure 5 The utility model discloses Figure 3 Enlarged view at C.

[0021] The figure mark explanation: 100, main shaft, 200, stator, 300, rotor, 400, reel, 500, shaft sleeve, 510, water inlet cavity, 520, drainage cavity, 530, hollow cavity, 531, serpentine pipeline, 600, connecting disc, 700, end cover, 800, heat dissipation passage, 900, ventilating hood, 901, through -hole, 902, filter screen, 903, handle. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the following will combine the utility model embodiment's attached Figures 1-5 The technical scheme of the utility model embodiment is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the described embodiment of the utility model, all other embodiments obtained by the person skilled in the art belong to the protection scope of the utility model.

[0023] As Figure 1 And Figure 3 The utility model provides a kind of mine hoist heat dissipation mechanism of permanent magnet motor built-in, heat dissipation mechanism is located in hoist, hoist includes main shaft 100, the stator 200 of being set on the outer side of main shaft 100 and the rotor 300 located in the outer side of stator 200, rotor 300 rotationally arranged on main shaft 100, reel 400 is arranged on rotor 300, shaft sleeve 500 is arranged on main shaft 100, heat dissipation mechanism includes the water inlet cavity 510 and drainage cavity 520 of being opened in shaft sleeve 500, water inlet cavity 510 includes the water inlet of being opened in shaft sleeve 500 located in the outer side of end cover 700 and the water outlet of being opened in shaft sleeve 500 located in the inner side of end cover 700 and being communicated with water inlet, drainage cavity 520 includes the drainage inlet of being opened in shaft sleeve 500 located in the inner side of end cover 700 and the drainage outlet of being opened in shaft sleeve 500 located in the outer side of end cover 700 and being communicated with drainage inlet, further include the hollow cavity 530 being communicated with water inlet cavity 510 and drainage cavity 520, hollow cavity 530 is opened in the side wall of stator 200, as Figure 2 And Figure 3As shown, the water inlet outlet of the water inlet cavity 510 is communicated with the water inlet of the hollow cavity 530 through a Z-shaped water pipe, the two ends of the Z-shaped water pipe are respectively provided with flanges and sealing pads, and the water inlet inlet and the water inlet outlet of the water inlet cavity 510 are also provided with flanges, the flanges on the Z-shaped water pipe are detachably arranged together with the flanges at the water inlet outlet of the water inlet cavity 510 through bolts, and this connection mode realizes that the cooling liquid in the water inlet cavity 510 is guided into the inside of the hollow structure through the Z-shaped water pipe, and then realizes the water cooling operation on the elevator.

[0024] The utility model discloses can through setting the water inlet inlet of water inlet cavity 510 on the shaft sleeve 500 injects cooling liquid, and the cooling liquid is stored in the circulating water tank, is provided with circulating water pump in the circulating water tank, and circulating water pump is used to pump the cooling liquid in the circulating water tank into the water inlet inlet of water inlet cavity 510 through water guide pipe, cooperates hollow cavity 530 and the hollow cavity 530 that communicates with hollow cavity 530 realizes the high -efficient heat dissipation operation of elevator, guarantees that elevator can always keep normal operating temperature under high temperature, high load and long -time work, greatly improves the safety and stability performance of elevator lifting operation, improves work efficiency and the service life of elevator.

[0025] According to an embodiment of the utility model, as shown in Figure 3 The utility model discloses can through the circulating water tank with submersible pump such as external water source realizes the cooling liquid in the circulating water tank through the water pumping pipe and pumps into the water inlet inlet on the water inlet cavity 510, flows into the water inlet outlet through the water inlet inlet, flows into the inlet of hollow cavity 530 through the water inlet outlet, and is discharged to the drainage inlet of drainage cavity 520 through the outlet of hollow cavity 530, flows into the drainage outlet through the drainage inlet, and finally flows into the circulating water tank through the drainage outlet, if necessary, can carry out the cooling operation to the water that returns to the inside of circulating water tank before the cooling liquid returns to the circulating water tank through the form of plate heat exchanger and fan, realizes the high -efficient cooling operation of the cooling liquid in the circulating water tank, guarantees the temperature of the cooling liquid that is pumped out through submersible pump always in optimum cooling state.

[0026] According to another embodiment of the utility model, as shown in Figure 3 And Figure 4As shown, the stator 200 is provided with a connecting disc 600 on the inner side, the main shaft 100 penetrates the connecting disc 600, the connecting disc 600 is welded on the main shaft 100, the connecting disc 600 is used for realizing the firm supporting effect of the main shaft 100 on the stator 200, the inside of the hollow cavity 530 is provided with a serpentine pipe 531, the serpentine pipe 531 is inserted in the inside of the hollow cavity 530, and the serpentine pipe 531 should select a material with good heat conduction performance, the inside of the hollow cavity 530 is filled with a heat conducting medium, the heat conducting medium is heat conducting oil, the water inlet end of the serpentine pipe 531 is connected with the water inlet outlet of the water inlet cavity 510, and the water outlet end of the serpentine pipe 531 is connected with the water drainage inlet of the water drainage cavity 520, the utility model can realize that the heat generated by the elevator is smoothly guided to the outside wall of the serpentine pipe 531 through the heat conducting medium in the inside of the hollow cavity 530, cooperates with the cooling liquid circulating in the serpentine pipe 531 to carry out efficient heat exchange operation, has good cooling effect, and through the serpentine pipe 531 arranged in the inside of the hollow cavity 530, the circulation path of the cooling liquid entering the inside is appropriately lengthened, the circulation flow path of the cooling liquid is greatly increased, the circulation flow time and path of the cooling liquid are lengthened, and the cooling effect of the cooling liquid is improved to a certain extent.

[0027] According to another embodiment of the utility model, as Figure 1 and Figure 2 As shown, the two ends of the winding drum 400 are respectively provided with end covers 700 for sealing the main shaft 100, the end covers 700 are detachably arranged on the winding drum 400 through bolts, the heat dissipation mechanism further comprises heat dissipation channels 800 opened on the end covers 700, the heat dissipation channels 800 comprise at least two waist-shaped holes opened on the end covers 700 and evenly distributed ventilation holes on the end covers 700, as Figure 2 As shown, two symmetrically arranged waist-shaped holes are opened on each end cover 700, the waist-shaped holes not only facilitate the installation and removal of the rib plate inside the winding drum 400 by the operator, but also can increase the air inlet amount, facilitate efficient cooling of the rotor 300, and greatly improve the air cooling efficiency.

[0028] The utility model can realize the air circulation efficiency through the heat dissipation channels 800 during the rotation of the winding drum 400, when the winding drum 400 of the elevator rotates, the natural wind enters the elevator through the waist-shaped holes and the ventilation holes, realizes the convection exchange of the heat inside, and has the effect of air cooling.

[0029] According to another embodiment of the utility model, as Figure 5 As shown, the outside of the heat dissipation channel 800 is provided with a ventilation cover 900, the ventilation cover 900 is provided with a through hole 901, the through hole 901 is provided with a filter screen 902,

[0030] AsFigure 2 and Figure 3 As shown in the figure, the through holes 901 are 16 in total, and each of the 8 groups, that is, 8 through holes 901 are evenly arranged on each end cover 700, and the corresponding ventilation cover 900 is 16 in total, and the ventilation cover 900 is detachably arranged outside the end cover 700 and outside the heat dissipation channel 800, and the purpose is to facilitate the operator to realize the disassembly and installation operation of the ventilation cover 900,

[0031] The utility model discloses can realize the isolation and block of dust in air through the filter screen 902 set up on the ventilation cover 900, avoid its into the elevator, subsequent cleaning trouble, and easily along with the accumulation of dust causes the heat that the elevator works in process is difficult to dissipate and discharges, and the heat in the elevator cannot be dissipated efficiently, there is certain security hidden danger problem, operation is more convenient.

[0032] The outer side of the ventilation cover 900 is provided with a handle 903, the handle 903 is a semicircular ring structure, and the outer side of the handle 903 can be provided with an antiskid rubber sleeve to facilitate increasing the friction force in the gripping process of the operator, and the utility model discloses can facilitate the gripping operation of the operator through the handle 903, and operation is more convenient.

[0033] The use method of the utility model discloses:

[0034] First of all, it needs to be clear that the heat dissipation structure related to the utility model is mainly used for efficient dissipation operation of heat generated by the elevator work, and here, the rotation principle of the winding drum 400 of the elevator needs to be briefly described first, when the lifting operation is needed, the coil in the stator 200 is connected with alternating current, the coil is connected with alternating current and generates three-phase rotating magnetic field, three-phase symmetrical current generates rotating magnetic field and makes the iron core have the same magnetism with the magnet arranged on the inner side wall of the rotor 300, and then interacts to generate torque, the magnetic force drives the rotor 300 and the winding drum 400 to rotate synchronously, and then realizes the winding of the steel wire rope, completes the lifting operation of the object, in this process, if the temperature rise of the permanent magnet motor is not controlled, the deformation of the stator 200 and the rotor 300 or the motor overheating fault can be caused, the temperature needs to be controlled in the appropriate temperature that does not cause the asymmetric deformation of the stator 200, generally, it is appropriate that the temperature is not higher than 60 degrees Celsius, in order to not affect the uniformity of air gap, according to calculation, the air gap is controlled at 2mm, so that the efficiency and lifting speed of the medium and large-sized elevator can be met, and the safety factor is higher.

[0035] With the continuous promotion of the operation, the heat dissipated by the elevator will accumulate, at this time, the heat dissipation structure will participate in the dissipation of the heat generated by the elevator, the working process of the heat dissipation structure is taken as an example to elaborate the use method, the heat dissipation mode is two kinds, including air cooling and water cooling two modes, under normal working condition, the heat dissipation operation of the heat generated in the working process of the elevator can be realized by the air cooling mode, when the air cooling cannot efficiently dissipate the heat generated by the elevator, the water cooling operation participates in the heat dissipation operation of the elevator,

[0036] The circulation path of the cooling medium is described below by taking the hollow cavity 530 without the serpentine pipe 531 as an example, the cooling liquid in the circulating water tank is pumped into the water inlet on the water inlet cavity 510 through the water pump, flows into the water inlet outlet through the water inlet, flows into the inlet of the hollow cavity 530 through the water outlet, and is discharged to the water outlet of the water outlet cavity 520 through the outlet of the hollow cavity 530, flows into the water outlet through the water outlet, and finally flows into the circulating water tank, if necessary, cooling ice or cold air can be injected into the circulating water tank to realize efficient cooling operation of the cooling liquid in the circulating water tank,

[0037] The above two heat dissipation modes can meet the heat dissipation demand of the elevator during the working process when the working time of the elevator is short, the load is small, and the working environment temperature is low, the flow path of the air entering the interior of the elevator can be planned here, for example, the serpentine air duct prolongs the flow path of the air, and the auxiliary air fan accelerates the flow of the air to realize the improvement operation of the air cooling efficiency;

[0038] Conversely, when the working time is long, the load is large, and the working environment temperature is high, the efficient heat dissipation operation of the elevator is mainly realized by water cooling and air cooling;

[0039] The utility model discloses can replace the traditional air cooling mode by the water cooling mode to realize the cooling demand of the elevator, and can realize the efficient cooling operation of the elevator by combining the air cooling and water cooling mode, guarantee the safe and stable performance of the permanent magnet motor of the elevator under the working condition of high temperature, high load and long time, and greatly improve the safety and lifting efficiency of the elevator.

[0040] In addition, it also needs to be explained that, in the description of the utility model, unless another explicit provision and limitation, the terms "installation", "connection", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through the intermediate medium, can be the intercommunication of two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] The above is the preferred embodiment of the present application, it should be noted that, for those skilled in the technical field, without departing from the principles described in the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the scope of protection of the present application.

Claims

1. A heat dissipation mechanism of a permanent magnet motor built-in mine hoist, the heat dissipation mechanism is located in the hoist, the hoist comprises a main shaft (100), a stator (200) arranged outside the main shaft (100) and a rotor (300) located outside the stator (200), the rotor (300) is rotatably arranged on the main shaft (100), and a winding drum (400) is arranged on the rotor (300), characterized in that: The main shaft (100) is provided with a shaft sleeve (500), the heat dissipation mechanism comprises a water inlet cavity (510) and a water outlet cavity (520) formed in the shaft sleeve (500), and further comprises a hollow cavity (530) communicated with the water inlet cavity (510) and the water outlet cavity (520), wherein the hollow cavity (530) is formed in the side wall of the stator (200).

2. The heat dissipation mechanism of the permanent magnet mine hoist built-in type according to claim 1, characterized in that: The water inlet cavity (510) comprises a water inlet inlet formed in the shaft sleeve (500) and located outside the end cover (700) and a water inlet outlet formed in the shaft sleeve (500) and located inside the end cover (700) and communicated with the water inlet inlet, and the water outlet cavity (520) comprises a water outlet inlet formed in the shaft sleeve (500) and located inside the end cover (700) and a water outlet outlet formed in the shaft sleeve (500) and located outside the end cover (700) and communicated with the water outlet inlet.

3. The heat dissipation mechanism of the permanent magnet mine hoist built-in type according to claim 1, characterized in that: The stator (200) is provided with a connecting disc (600) inside, the main shaft (100) penetrates through the connecting disc (600), the connecting disc (600) is fixedly arranged on the main shaft (100), the hollow cavity (530) is internally provided with a serpentine pipe (531), the hollow cavity (530) is filled with a heat conducting medium, a water inlet end of the serpentine pipe (531) is communicated with a water inlet outlet of the water inlet cavity (510), and a water outlet end of the serpentine pipe (531) is communicated with a water outlet inlet of the water outlet cavity (520).

4. The heat sink mechanism of the permanent magnet mine hoist built-in type according to claim 1, characterized in that: Both ends of the winding drum (400) are respectively provided with an end cover (700) for sealing the main shaft (100), and the heat dissipation mechanism further comprises a heat dissipation channel (800) formed in the end cover (700).

5. The heat dissipating mechanism of the permanent magnet mine hoist built-in type according to claim 4, characterized in that: An outer side of the heat dissipation channel (800) is provided with a ventilation cover (900), the ventilation cover (900) is provided with a through hole (901), and the through hole (901) is provided with a filter screen (902).

6. The heat sink mechanism of the permanent magnet mine hoist built-in type according to claim 5, characterized in that: The ventilation cover (900) is detachably arranged outside the end cover (700) and outside the heat dissipation channel (800) through bolts.

7. The heat sink mechanism for a permanent magnet mine hoist machine according to claim 5 or 6, characterized in that: An outer side of the ventilation cover (900) is provided with a handle (903).

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