Energy-saving heat dissipation device for asynchronous motor of electric forklift

Abstract

The invention relates to the technical field of motor heat dissipation, and discloses an energy-saving electric forklift asynchronous motor heat dissipation device which comprises a motor body arranged on a forklift body, a cooling water tank is fixed to one side of the motor body, a water pump is arranged on the outer surface of the cooling water tank, and a water supply groove is formed in the inner wall of the cooling water tank. A water supply opening is formed in one side of the water supply groove, and a cooling water pipe used for cooling the motor body is arranged on the inner wall of the motor body; a rotating shaft is arranged on the motor body, a cooling fan is fixed at the end part of the rotating shaft, and a plurality of groups of ventilation holes are formed in one side of the motor body; according to the technical scheme, when the temperature of the motor body rises until heat dissipation is needed, liquid in the filling liquid groove expands to push the first piston plate to move, the first piston plate moves to open the cooling water pipe and open the ventilation holes, and therefore heat dissipation can be conducted in the mode of combining air cooling and water cooling at the same time, and the heat dissipation effect of the motor body is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor heat dissipation, in particular to an energy-saving electric forklift asynchronous motor heat dissipation device. BACKGROUND

[0002] The electric forklift refers to the forklift that works by electricity, and most of them are battery-powered, which is an energy-saving new energy equipment. The electric forklift needs to be driven by an asynchronous motor during use. The asynchronous motor is generally installed inside the electric forklift. In order to ensure the normal use of the asynchronous motor, the asynchronous motor needs to be cooled when the temperature of the asynchronous motor rises during use.

[0003] At present, the existing asynchronous motor generally has two ways of heat dissipation: air cooling and water cooling. Usually, the asynchronous motor selects one of the two ways to dissipate heat. When air cooling is adopted, the asynchronous motor itself is provided with a cooling fan to dissipate heat. When water cooling is adopted, the asynchronous motor is connected with a cooling water pipe to dissipate heat inside the asynchronous motor by using cooling water. However, the above two ways of heat dissipation generally start to dissipate heat when the asynchronous motor starts. Since the temperature rise of the asynchronous motor is different in different weather conditions (such as winter), the asynchronous motor needs to be kept at a certain temperature in order to enter the working state better and faster when the temperature does not reach the temperature that needs to be cooled. That is, the asynchronous motor needs to be heated. If the asynchronous motor starts to dissipate heat, the heating time of the asynchronous motor will be increased, the working time of the asynchronous motor in low temperature conditions will be prolonged, the loss of the asynchronous motor will be increased, and the service life of the asynchronous motor will be reduced. SUMMARY

[0004] The present application provides an energy-saving electric forklift asynchronous motor heat dissipation device. When the motor body does not need to be cooled after starting, the ventilation hole and the cooling water pipe are in a closed state, and at this time, no cooling treatment is performed. When cooling is needed, the liquid in the liquid tank expands to drive the first piston plate to move. The movement of the first piston plate opens the cooling water pipe and the ventilation hole, so that the inside of the motor body can be cooled. The problem that if the asynchronous motor starts to dissipate heat, the heating time of the asynchronous motor will be increased, the working time of the asynchronous motor in low temperature conditions will be prolonged, the loss of the asynchronous motor will be increased, and the service life of the asynchronous motor will be reduced is solved.

[0005] The application provides the following technical scheme: an energy-saving electric forklift asynchronous motor heat dissipation device, comprising a motor body arranged on a forklift body, the forklift body is provided with a mounting chamber for mounting the motor body, one side of the motor body is fixedly provided with a cooling water tank, the outer surface of the cooling water tank is provided with a water pump, the output end of the water pump is in communication with a water delivery pipe, the inner wall of the cooling water tank is provided with a water supply groove, one side of the water supply groove is provided with a water supply opening, the inner wall of the motor body is provided with a cooling water pipe for heat dissipation of the motor body, one end of the cooling water pipe is in communication with the inside of the cooling water tank.

[0006] The motor body is provided with a rotating shaft, the end of the rotating shaft is fixedly provided with a heat dissipation fan, the inner wall of the motor body is provided with a first sliding groove, the first sliding groove is elastically connected with a blocking strip, the blocking strip is provided with a first through groove for connecting the water supply opening and the cooling water pipe, one side of the motor body is provided with a plurality of groups of ventilation holes, and the inside of the plurality of groups of ventilation holes is elastically provided with a blocking plate.

[0007] As an optional scheme of the energy-saving electric forklift asynchronous motor heat dissipation device, a partition plate is fixedly arranged in the first sliding groove, the partition plate is provided with a filling liquid groove on one side, a first piston plate is slidably arranged in the filling liquid groove, a connecting rod is fixedly arranged between the first piston plate and the blocking strip, a first spring is fixedly arranged between the first piston plate and the partition plate, a fifth spring is arranged on one side of the filling liquid groove, and the end of the fifth spring is fixedly provided with a second piston plate.

[0008] As an optional scheme of the energy-saving electric forklift asynchronous motor heat dissipation device, a first conductive sheet is fixedly arranged on the outer surface of the blocking strip, a second conductive sheet is fixedly arranged on the inner wall of the first sliding groove, and the water pump is electrified by being in contact with the first conductive sheet and the second conductive sheet.

[0009] As an optional scheme of the energy-saving electric forklift asynchronous motor heat dissipation device, a second sliding groove is arranged in the motor body, the blocking plate is slidably arranged in the second sliding groove, a second through groove is arranged on the blocking plate and used for guiding the ventilation holes, a sliding rod is fixedly arranged at the end of the blocking plate, an inclined groove is arranged in the blocking strip and used for sliding of the sliding rod, and a second spring is arranged between the inner wall of the second sliding groove and the outer surface of the blocking plate.

[0010] As an optional scheme of the energy-saving electric forklift asynchronous motor heat dissipation device, the inside of the water supply groove is slidably provided with a moving block, a third spring is arranged between the moving block and the inner wall of the water supply groove, a plurality of groups of first heat dissipation fins are arranged at equal intervals in the inside of the cooling water tank, a plurality of groups of second heat dissipation fins are elastically connected on the plurality of groups of first heat dissipation fins, and the end of the second heat dissipation fin is arranged on the outside of the cooling water tank.

[0011] As an optional scheme of the energy-saving electric forklift asynchronous motor heat dissipation device, the surface of the moving block is fixedly provided with a first trapezoidal block, the outer surface of one side of the second heat dissipation fin is fixedly provided with a second trapezoidal block in abutment with the first trapezoidal block, the outer surface of the other side of the second heat dissipation fin is fixedly provided with a protruding block, the inside of the cooling water tank is provided with a limiting groove for sliding of the protruding block, and a fourth spring is fixedly arranged between the protruding block and the limiting groove.

[0012] As an optional scheme of the energy-saving electric forklift asynchronous motor heat dissipation device, the inside of the second heat dissipation fin is provided with a receiving groove, and a movable block is elastically connected in the receiving groove.

[0013] As an optional scheme of the energy-saving electric forklift asynchronous motor heat dissipation device, the first heat dissipation fin is fixedly provided with an insertion rod for insertion into the inside of the second heat dissipation fin, the end of the insertion rod is provided with a limiting guide groove, the surface of the movable block is fixedly provided with a protruding column, the end of the protruding column is fixedly provided with a limiting ball, and the limiting ball is slidably arranged in the limiting guide groove.

[0014] As an optional scheme of the energy-saving electric forklift asynchronous motor heat dissipation device, the inner wall of the motor body is provided with an inclined air guide groove, the top of the inclined air guide groove is communicatively provided with a ventilation pipe, the inside of the cooling water tank is provided with a ventilation groove, the end of the ventilation pipe is communicatively provided with the ventilation groove, the top of the cooling water tank is provided with a recess for heat dissipation of the top of the second heat dissipation fin, one side of the ventilation groove is provided with a plurality of groups of air outlets communicatively provided with the recess, and the inside of the cooling water tank is elastically provided with a plugging block for controlling opening and closing of the ventilation groove.

[0015] As an optional scheme of the energy-saving electric forklift asynchronous motor heat dissipation device, the inside of the cooling water tank is provided with a third sliding groove for sliding of the plugging block, one side of the moving block is fixedly provided with a transmission rod, the end of the transmission rod is fixedly provided with a push-pull rod, the end of the push-pull rod is fixedly connected with the plugging block, and one side of the third sliding groove is provided with a fourth sliding groove for movement of the push-pull rod and the transmission rod.

[0016] The present application has the following beneficial effects:

[0017] 1. In this energy-saving electric forklift asynchronous motor cooling device, when the motor body temperature has not reached the cooling temperature, the ventilation holes and cooling water pipes are closed, and there is no need to cool the motor body through the ventilation holes and cooling water pipes. When the motor body needs to cool down, that is, when the internal temperature of the motor body exceeds the normal temperature, the liquid inside the filling tank expands, which pushes the first piston plate to move. The movement of the first piston plate drives the sealing strip and sealing plate to move, so that the first channel connects the water supply port and the cooling water tank, and the second channel opens the ventilation hole. Thus, the motor body is cooled by a combination of air cooling and water cooling. Through the above process, the cooling temperature of the motor body can be adapted according to the temperature demand, instead of constantly cooling the motor body, which helps to reduce the wear of the motor body. Moreover, the combination of air cooling and water cooling improves the cooling efficiency and helps to increase the service life of the motor body.

[0018] 2. In this energy-saving electric forklift asynchronous motor cooling device, when the motor body is cooled by water cooling, the first heat sink absorbs the heat of the cooling water and transfers it to the second heat sink, which then dissipates the heat, thus facilitating the cooling water cooling process. When the cooling water enters the water supply tank, it pushes the moving block to move inside the water supply tank until the water supply port is opened. As the moving block moves, it drives the second heat sink to move upward, extending the second heat sink to the outside of the cooling water tank. At the same time, when the second heat sink extends, the internal third heat sink can be extended, thereby increasing the heat dissipation area and further improving the cooling effect of the cooling water, which is beneficial for cooling the motor body.

[0019] 3. In this energy-saving electric forklift asynchronous motor cooling device, when cooling water enters the water supply tank and pushes the moving block to move inside the water supply tank, the moving block drives the push-pull rod to move through the transmission rod. The push-pull rod moves and pulls the sealing block to move, causing the sealing block to move away from the ventilation slot and open the ventilation slot. At this time, the cold air blown out by the cooling fan enters the ventilation slot through the inclined air guide and ventilation pipe, and blows towards the second and third heat sinks through the air outlet, thereby conveniently and quickly dissipating the heat around the second and third heat sinks, increasing the heat dissipation efficiency of the second and third heat sinks. At the same time, the cooling fan blows cold air to the second and third heat sinks for cooling, increasing the utilization efficiency of the cooling fan and realizing two uses for one fan, further improving the heat dissipation efficiency of the motor body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connection structure between the motor body and the forklift body of the present invention.

[0021] Figure 2 Fig. 4 is a perspective view of the motor body and the cooling water tank portion of the present application.

[0022] Figure 3 Fig. 5 is a top sectional view of the motor body and the cooling water tank portion of the present application.

[0023] Figure 4 Fig. 6 is an enlarged view of A in Fig. 5. Figure 3

[0024] Figure 5 Fig. 7 is an enlarged view of B in Fig. 5. Figure 3

[0025] Figure 6 Fig. 8 is a longitudinal sectional view of the cooling water tank portion of the present application.

[0026] Figure 7 Fig. 9 is an enlarged view of C in Fig. 8. Figure 6

[0027] Figure 8 Fig. 10 is an enlarged view of D in Fig. 8. Figure 6

[0028] Fig. 11 is a top sectional view of the cooling water tank portion of the present application. Figure 9

[0029] Fig. 12 is an enlarged view of E in Fig. 11. Figure 10 Figure 9

[0030] Fig. 13 is a sectional view of the inclined air guide groove portion inside the motor body of the present application. Figure 11

[0031] Fig. 14 is a sectional view of the plugging block portion of the present application. Figure 12 Figure 10

[0032] ​​​​​​1, the forklift body; 2, motor body; 3, installation room; 4, cooling water tank; 5, water pump; 6, water pipe; 7, water supply tank; 8, water supply opening; 9, cooling water pipe; 10, rotating shaft; 11, cooling fan; 12, first sliding groove; 13, blocking strip; 14, first through groove; 15, ventilation hole; 16, blocking plate; 17, partition; 18, filling liquid tank; 19, first piston plate; 20, connecting rod; 21, No. 1 spring; 22, first conductive sheet; 23, second conductive sheet; 24, second sliding groove; 25, second through groove; 26, sliding rod; 27, inclined groove; 28, No. 2 spring; 29, moving block; 30, No. 3 spring; 31, first fin; 32, second fin; 33, first trapezoidal block; 34, second trapezoidal block; 35, protruding block; 36, limiting groove; 37, No. 4 spring; 38, storage groove; 39, movable block; 40, third fin; 41, insertion rod; 42, limiting guide groove; 43, protruding column; 44, limiting ball; 45, inclined air guide groove; 46, ventilation pipe; 47, ventilation groove; 48, groove; 49, air outlet; 50, blocking block; 51, third sliding groove; 52, transmission rod; 53, push-pull rod; 54, fourth sliding groove; 55, No. 5 spring; 56, second piston plate. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] Embodiment one, please refer to Figures 1-12 An energy-saving electric forklift asynchronous motor heat dissipation device, which comprises a motor body 2 arranged on a forklift body 1, and an installation room 3 for mounting the motor body 2 is arranged on the forklift body 1, and a cooling water tank 4 is fixed to one side of the motor body 2, and a water pump 5 is arranged on the outer surface of the cooling water tank 4, and a water pipe 6 is communicatively arranged at the output end of the water pump 5, and a water supply tank 7 is formed in the inner wall of the cooling water tank 4, and a water supply opening 8 is formed in one side of the water supply tank 7, and a cooling water pipe 9 for dissipating heat of the motor body 2 is arranged on the inner wall of the motor body 2, and one end of the cooling water pipe 9 is communicatively arranged with the inside of the cooling water tank 4;

[0035] A rotating shaft 10 is arranged on the motor body 2, and a cooling fan 11 is fixed to the end of the rotating shaft 10, and a first sliding groove 12 is formed in the inner wall of the motor body 2, and a blocking strip 13 is elastically connected in the first sliding groove 12, and a first through groove 14 for connecting the water supply opening 8 and the cooling water pipe 9 is formed in the blocking strip 13, and a plurality of groups of ventilation holes 15 are formed in one side of the motor body 2, and a blocking plate 16 is elastically arranged in the plurality of groups of ventilation holes 15.

[0036] The inner part of the first sliding groove 12 is fixed with a partition plate 17, one side of the partition plate 17 is provided with a filling liquid groove 18, the inner part of the filling liquid groove 18 is slidably provided with a first piston plate 19, the first piston plate 19 is fixed with a connecting rod 20 between the blocking strip 13, the first piston plate 19 is fixed with a first spring 21 between the partition plate 17, one side of the filling liquid groove 18 is provided with a fifth spring 55, the end of the fifth spring 55 is fixed with a second piston plate 56;

[0037] The outer surface of the blocking strip 13 is fixed with a first conductive sheet 22, the inner wall of the first sliding groove 12 is fixed with a second conductive sheet 23, the water pump 5 is powered through the contact of the first conductive sheet 22 and the second conductive sheet 23;

[0038] The inner part of the motor body 2 is provided with a second sliding groove 24, the blocking plate 16 is slidably arranged in the second sliding groove 24, the blocking plate 16 is provided with a second through groove 25 for guiding the ventilation hole 15, the end of the blocking plate 16 is fixed with a sliding rod 26, the inner part of the blocking strip 13 is provided with an inclined groove 27 for sliding of the sliding rod 26, the inner wall of the second sliding groove 24 and the outer surface of the blocking plate 16 are provided with a second spring 28.

[0039] In the technical scheme, before the temperature in the motor body 2 reaches the temperature that needs to be cooled, the ventilation hole 15 and the water inlet 8 are in a closed state, and the air cooling and water cooling are not needed; with the working of the motor body 2, the temperature of the motor body 2 rises, when the temperature rises to the temperature that needs to be cooled, the liquid filled in the filling liquid groove 18 has the performance of temperature induction, and can expand and deform when the temperature rises, and can restore when the temperature decreases, which can be mercury; when the temperature rises to the temperature that needs to be cooled, the mercury expands in the filling liquid groove, as shown in Figure 3 and Figure 4 The first piston plate 19 is pushed to move rightwards, the first piston plate 19 drives the connecting rod 20 to move rightwards, the first spring 21 is compressed to store power, the connecting rod 20 pushes the blocking strip 13 to move rightwards in the first sliding groove 12, the blocking strip 13 drives the first through groove 14 to move rightwards, so that the first through groove 14 connects the water inlet 8 and the cooling water pipe 9, and simultaneously as Figure 5As shown, the blocking strip 13 moves to the right, driving the sliding rod 26 to slide inside the inclined groove 27, so that the inclined groove 27 is in contact with the sliding rod 26, prompting the sliding rod 26 to move downward, the sliding rod 26 moves downward, driving the blocking plate 16 to move downward, the blocking plate 16 moves downward, driving the second through groove 25 to move downward, so that the second through groove 25 is in communication with the ventilation hole 15, and the blocking plate 16 moves downward to compress the second spring 28, so that the second spring 28 stores energy, at this time, when the rotating shaft 10 of the motor body 2 rotates, the rotating shaft 10 drives the cooling fan 11 to rotate, so that the ventilation hole 15 can be ventilated, so that the air circulates, thereby cooling the motor body 2 by air cooling;

[0040] When the blocking strip 13 moves to the right, the first conductive sheet 22 moves to the right, the first conductive sheet 22 moves to the right and contacts the second conductive sheet 23, so that the water pump 5 is powered on, at this time, the first through groove 14, the water inlet 8 and the cooling water pipe 9 are in communication, the cooling water in the cooling water tank 4 is pumped out by the water pump 5, the circulation channel of the cooling water is formed by the water inlet pipe 6, the water supply groove 7, the water inlet 8, the first through groove 14 and the cooling water pipe 9 and the cooling water tank 4, and the heat inside the motor body 2 is taken away by the circulating cooling water, thereby cooling the motor body 2 by water cooling;

[0041] After the motor body 2 is closed, the temperature does not need to be cooled, the temperature of the motor body 2 is reduced, the mercury in the filling liquid groove 18 is contracted and restored, at this time, the first spring 21 is released, the first piston plate 19 moves to the left and resets, the first piston plate 19 moves to the left and resets, driving the blocking strip 13 to move to the left and reset, the blocking strip 13 moves to the left and resets, first separates the first conductive sheet 22 and the second conductive sheet 23, so that the water pump 5 is powered off, the first through groove 14 is out of position with the water inlet 8 and the cooling water pipe 9, and the cooling water is stopped, at this time, the blocking strip 13 continues to move to the left and reset, the top of the sliding rod 26 loses the contact of the inclined groove 27, the second spring 28 is released, so that the sliding rod 26 moves upward and resets, at the same time, the blocking plate 16 moves upward and resets, so that the second through groove 25 is out of position with the ventilation hole 15, and the ventilation hole 15 is blocked, the reset action is completed;

[0042] In the technical scheme, when the first piston plate 19 is pushed to be unable to move, if the motor body 2 continues to rise to a certain temperature at this time, the mercury in the filling liquid groove 18 will drive the second piston plate 56 to move and compress the fifth spring 55 to store energy, completing the pressure relief work of the filling liquid groove 18, and the first piston plate 19 and the second piston plate 56 are both in sealed connection with the filling liquid groove 18, the blocking strip 13 is in sealed connection with the first sliding groove 12, and the blocking plate 16 is in sealed connection with the second sliding groove 24.

[0043] In the second embodiment, when the heat is dissipated by the circulating cooling water, the cooling water absorbs more heat as the working time is longer, and the temperature of the cooling water is higher. If the temperature of the cooling water is always higher, the heat dissipation effect is poor when the motor body 2 is cooled by the cooling water with a higher temperature, which is not conducive to cooling the motor body 2. To solve this problem, the present embodiment is improved on the basis of the first embodiment. For details, please refer to Figures 1-12 The inside of the water supply groove 7 is slidably provided with a moving block 29, and a third spring 30 is arranged between the moving block 29 and the inner wall of the water supply groove 7. The inside of the cooling water tank 4 is arranged with a plurality of groups of first heat dissipation fins 31 at equal intervals. The first heat dissipation fins 31 are elastically connected with a second heat dissipation fin 32. The end of the second heat dissipation fin 32 is arranged outside the cooling water tank 4.

[0044] The surface of the moving block 29 is fixed with a first trapezoidal block 33. The outer surface of one side of the second heat dissipation fin 32 is fixed with a second trapezoidal block 34 which is in contact with the first trapezoidal block 33. The outer surface of the other side of the second heat dissipation fin 32 is fixed with a protruding block 35. The inside of the cooling water tank 4 is provided with a limiting groove 36 for the sliding of the protruding block 35. The fourth spring 37 is fixed between the protruding block 35 and the limiting groove 36.

[0045] The inside of the second heat dissipation fin 32 is provided with a receiving groove 38. The receiving groove 38 is elastically connected with a movable block 39. The outer surface of the movable block 39 is fixed with a plurality of groups of third heat dissipation fins 40.

[0046] The first heat dissipation fin 31 is fixed with a plug rod 41 which is inserted into the inside of the second heat dissipation fin 32. The end of the plug rod 41 is provided with a limiting guide groove 42. The surface of the movable block 39 is fixed with a protruding column 43. The end of the protruding column 43 is fixed with a limiting ball 44 which is slidably arranged in the limiting guide groove 42.

[0047] In the technical solution, the heat of the cooling water in the cooling water tank 4 is absorbed by the first heat dissipation fin 31 and the second heat dissipation fin 32, which facilitates the cooling and heat dissipation of the cooling water by the first heat dissipation fin 31 and the second heat dissipation fin 32. When the water pump 5 supplies water to the water supply groove 7 through the water supply pipe 6, the cooling water first fills the water supply groove 7, so that the water in the water supply groove 7 is more and more, and at the same time, the moving block 29 is pushed to move left in the water supply groove 7. The third spring 30 is compressed and stored (as shown in Figure 5 When the moving block 29 moves to the left side of the water supply port 8, the cooling water is discharged through the water supply port 8 for water cooling. When the moving block 29 moves to the left, the third spring 30 is compressed and stored (as shown in Figure 6 and Figure 7As shown, at this time, the perspective of the moving block 29 is that the moving block 29 moves to the right, the moving block 29 moves to the right, the first trapezoidal block 33 moves to the right, the first trapezoidal block 33 abuts against the second trapezoidal block 34, and the second trapezoidal block 34 moves upward. Because the second heat sink 32 is in sliding connection with the first heat sink 31, the second trapezoidal block 34 can drive the second heat sink 32 to move upward, the second heat sink 32 moves upward, the protruding block 35 moves upward, the fourth spring 37 is pulled and stored, the second heat sink 32 moves upward to extend the end portion to the outside of the cooling water tank 4, thereby increasing the exposed area and increasing the heat dissipation speed;

[0048] When the second heat sink 32 moves upward, the second heat sink 32 drives the third heat sink 40 and the movable block 39 to move upward, the movable block 39 moves upward, the protruding column 43 moves upward, the protruding column 43 drives the limiting ball 44 to move upward, because the limiting guide groove 42 abuts against, the limiting ball 44 drives the protruding column 43 to move to the left (as shown), the protruding column 43 moves to the left, the movable block 39 moves to the left, the movable block 39 drives the third heat sink 40 to move to the left, the third heat sink 40 extends from the storage groove 38, the heat dissipation area is increased, and the efficiency of the heat dissipation fin is improved; Figure 7

[0049] When resetting, the water pump 5 stops working, the third spring 30 releases the force, and the moving block 29 is reset. When the moving block 29 is reset, the second trapezoidal block 34 loses the abutment of the first trapezoidal block 33, and the fourth spring 37 releases the force, so that the second heat sink 32 moves downward and resets. The second heat sink 32 moves downward and resets, so that the insertion rod 41 is inserted into the second heat sink 32 again. At this time, the slide rod 26 drives the limiting ball 44 to slide reversely in the limiting guide groove 42, drives the third heat sink 40 to be stored in the storage groove 38, completes the resetting of the second heat sink 32 and the third heat sink 40, and is beneficial to reducing the exposed length of the second heat sink 32 and the third heat sink 40 when the cooling is not needed, and increasing the protection.

[0050] In example three, because the heat emitted by the second heat sink 32 and the third heat sink 40 is generally concentrated in the groove 48 part when the heat is dissipated, the temperature around the second heat sink 32 and the third heat sink 40 is relatively high, thereby affecting the heat dissipation efficiency of the second heat sink 32 and the third heat sink 40, the heat dissipation of the second heat sink 32 and the third heat sink 40 is slow, and the heat dissipation efficiency of the motor body 2 may be affected. In view of this problem, the embodiment is improved on the basis of example two. For details, please refer to Figures 1-12 ​The inner wall of the motor body 2 is provided with an inclined air guide groove 45, the top of the inclined air guide groove 45 is provided with a ventilation pipe 46 in communication, the inside of the cooling water tank 4 is provided with a ventilation groove 47, the end of the ventilation pipe 46 is provided in communication with the ventilation groove 47, the top of the cooling water tank 4 is provided with a groove 48 for heat dissipation of the top of the second heat sink 32, the ventilation groove 47 is provided with a plurality of groups of air outlets 49 in communication with the groove 48 on one side, and the cooling water tank 4 is elastically provided with a blocking block 50 for controlling the opening and closing of the ventilation groove 47;

[0051] The inside of the cooling water tank 4 is provided with a third sliding groove 51 for sliding of the blocking block 50, one side of the moving block 29 is fixed with a transmission rod 52, the end of the transmission rod 52 is fixed with a push-pull rod 53, the end of the push-pull rod 53 is fixedly connected with the blocking block 50, and the third sliding groove 51 is provided with a fourth sliding groove 54 on one side for movement of the push-pull rod 53 and the transmission rod 52.

[0052] In the technical scheme, when the cooling water drives the moving block 29 to move, as shown in the figure, Figure 12 The moving block 29 moves to the left, at this time the moving block 29 moves to the left to drive the transmission rod 52 to move to the left, the transmission rod 52 drives the push-pull rod 53 to move to the left, the push-pull rod 53 drives the blocking block 50 to move to the left, the blocking block 50 moves to the left to open the ventilation groove 47, at this time since the inclined air guide groove 45 is arranged in front of the cooling fan 11 and is inclined, the cold air blown out by the cooling fan 11 can enter the inclined air guide groove 45, then enter the ventilation pipe 46 through the inclined air guide groove 45, and then enter the ventilation groove 47 through the ventilation pipe 46, and then blow to the second heat sink 32 and the third heat sink 40 in the groove 48 through the air outlet 49, so as to facilitate heat dissipation of the second heat sink 32 and the third heat sink 40 by the cold air blown out by the cooling fan 11, not only increase the heat dissipation efficiency of the second heat sink 32 and the third heat sink 40, but also increase the utilization efficiency of the cold air blown out by the cooling fan 11, realize one fan for two purposes, and further improve the heat dissipation efficiency of the motor body 2.

[0053] It should be noted that in this paper, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0054] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several improvements and refinements can be made without departing from the technical principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. An energy-saving electric forklift asynchronous motor cooling device, comprising a motor body (2) mounted on a forklift body (1), wherein the forklift body (1) is provided with a mounting chamber (3) for mounting the motor body (2), characterized in that: A cooling water tank (4) is fixed on one side of the motor body (2). A water pump (5) is provided on the outer surface of the cooling water tank (4). A water supply pipe (6) is connected to the output end of the water pump (5). A water supply trough (7) is provided on the inner wall of the cooling water tank (4). A water supply port (8) is provided on one side of the water supply trough (7). A cooling water pipe (9) for dissipating heat from the motor body (2) is provided on the inner wall of the motor body (2). One end of the cooling water pipe (9) is connected to the interior of the cooling water tank (4). The motor body (2) is provided with a rotating shaft (10), and a cooling fan (11) is fixed at the end of the rotating shaft (10). The inner wall of the motor body (2) is provided with a first sliding groove (12), and a sealing strip (13) is elastically connected in the first sliding groove (12). The sealing strip (13) is provided with a first through groove (14) for connecting the water supply port (8) and the cooling water pipe (9). A number of ventilation holes (15) are provided on one side of the motor body (2), and a sealing plate (16) is elastically provided inside the number of ventilation holes (15).

2. The energy-saving electric forklift asynchronous motor cooling device according to claim 1, characterized in that: A partition (17) is fixed inside the first chute (12). A filling liquid tank (18) is provided on one side of the partition (17). A first piston plate (19) is slidably arranged inside the filling liquid tank (18). A connecting rod (20) is fixed between the first piston plate (19) and the sealing strip (13). A first spring (21) is fixed between the first piston plate (19) and the partition (17). A fifth spring (55) is provided on one side of the filling liquid tank (18). A second piston plate (56) is fixed to the end of the fifth spring (55).

3. The energy-saving electric forklift asynchronous motor cooling device according to claim 2, characterized in that: The outer surface of the sealing strip (13) is fixed with a first conductive sheet (22), and the inner wall of the first groove (12) is fixed with a second conductive sheet (23). The water pump (5) is powered through the contact between the first conductive sheet (22) and the second conductive sheet (23).

4. The energy-saving electric forklift asynchronous motor cooling device according to claim 3, characterized in that: The motor body (2) has a second sliding groove (24) inside. The sealing plate (16) is slidably disposed in the second sliding groove (24). The sealing plate (16) has a second through groove (25) for guiding the ventilation hole (15). The end of the sealing plate (16) is fixed with a sliding rod (26). The sealing strip (13) has an inclined groove (27) inside for sliding the sliding rod (26). A second spring (28) is provided between the inner wall of the second sliding groove (24) and the outer surface of the sealing plate (16).

5. The energy-saving electric forklift asynchronous motor cooling device according to claim 4, characterized in that: The water supply tank (7) is slidably provided with a moving block (29), and a No. 3 spring (30) is provided between the moving block (29) and the inner wall of the water supply tank (7). The cooling water tank (4) is provided with several sets of first heat sinks (31) arranged at equal intervals. The several sets of first heat sinks (31) are elastically connected with second heat sinks (32), and the ends of the second heat sinks (32) are provided on the outside of the cooling water tank (4).

6. The energy-saving electric forklift asynchronous motor cooling device according to claim 5, characterized in that: The surface of the movable block (29) is fixed with a first trapezoidal block (33), and a second trapezoidal block (34) that abuts against the first trapezoidal block (33) is fixed on one side of the outer surface of the second heat sink (32). A protrusion (35) is fixed on the other side of the outer surface of the second heat sink (32). A limiting groove (36) for sliding of the protrusion (35) is opened inside the cooling water tank (4). A No. 4 spring (37) is fixed between the protrusion (35) and the limiting groove (36).

7. The energy-saving electric forklift asynchronous motor cooling device according to claim 6, characterized in that: The second heat sink (32) has a storage groove (38) inside, and a movable block (39) is elastically connected inside the storage groove (38). Several sets of third heat sinks (40) are fixed on the outer surface of the movable block (39).

8. The energy-saving electric forklift asynchronous motor cooling device according to claim 7, characterized in that: The first heat sink (31) is fixed with a plug (41) for inserting into the second heat sink (32). The end of the plug (41) is provided with a limiting guide groove (42). The surface of the movable block (39) is fixed with a protrusion (43). The end of the protrusion (43) is fixed with a limiting ball (44). The limiting ball (44) is slidably disposed in the limiting guide groove (42).

9. The energy-saving electric forklift asynchronous motor cooling device according to claim 8, characterized in that: An inclined air guide groove (45) is provided on the inner wall of the motor body (2). A ventilation pipe (46) is connected to the top of the inclined air guide groove (45). A ventilation groove (47) is provided inside the cooling water tank (4). The end of the ventilation pipe (46) is connected to the ventilation groove (47). A groove (48) for dissipating heat from the top of the second heat sink (32) is provided on the top of the cooling water tank (4). A number of air outlets (49) connected to the groove (48) are provided on one side of the ventilation groove (47). A sealing block (50) for controlling the opening and closing of the ventilation groove (47) is elastically provided inside the cooling water tank (4).

10. The energy-saving electric forklift asynchronous motor cooling device according to claim 9, characterized in that: The cooling water tank (4) has a third sliding groove (51) for the sealing block (50) to slide inside. A transmission rod (52) is fixed on one side of the moving block (29). A push-pull rod (53) is fixed at the end of the transmission rod (52). The end of the push-pull rod (53) is fixedly connected to the sealing block (50). A fourth sliding groove (54) is provided on one side of the third sliding groove (51) for the push-pull rod (53) and the transmission rod (52) to move.

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