Large torque counterweight flat type electric forklift motor

Abstract

The application discloses a large-torque balanced heavy flat electric forklift motor, which comprises a motor shell composed of a front end cover, a rear end cover and an outer shell, a heat dissipation fan is arranged on the inner side wall of the rear end cover, an air inlet is arranged on the rear end cover, and a plurality of through holes one are arranged on the outer shell at intervals; an inner shell is arranged on the inner side of the outer shell, the inner shell is movably arranged along the horizontal direction, a plurality of through holes two are arranged on the inner shell at intervals, the through holes one and the through holes two partially overlap under normal conditions, and the overlapping part is connected between the outside and the inside of the motor shell. Through the adjusting assembly, the temperature inside the motor shell can be monitored in real time through the temperature sensor, and the temperature information is transmitted to the controller when the temperature rises; the controller controls the driving part to abut against the inner shell, the position of the inner shell is changed, the position of the through holes two is adjusted, the heat dissipation effect is improved, the heat dissipation mode is adjusted according to the actual working condition, and the application has strong flexibility.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electric forklift motors, in particular to a large-torque counterweight flat type electric forklift motor. BACKGROUND

[0002] The large-torque counterweight flat type electric forklift motor is a specially designed motor, which is designed for the large-torque demand and smooth operation of electric forklifts. It can provide strong rotating torque to meet the demand of forklifts in heavy load lifting and handling process, and also has a balance block of appropriate mass to help improve the smoothness and safety of forklift operation.

[0003] The existing flat type motor with large torque generally has a heat dissipation structure during use. The fixed heat dissipation structure can usually only provide one heat dissipation mode and cannot be adjusted according to the actual working conditions and environmental temperature. SUMMARY

[0004] In view of the problems in the prior art, the present application proposes the following technical scheme:

[0005] The present application provides a large-torque counterweight flat type electric forklift motor, comprising:

[0006] A motor housing composed of a front end cover, a rear end cover and an outer shell, a heat dissipation fan is arranged on the inner side wall of the rear end cover, an air inlet is arranged on the rear end cover, and a plurality of through holes one are arranged on the outer shell in an interval;

[0007] An inner shell is arranged on the inner side of the outer shell, the inner shell is movably arranged along the horizontal direction, a plurality of through holes two are arranged on the inner shell in an interval, the through holes one and the through holes two partially overlap in normal state, and the overlapping part is in communication with the outside and the inside of the motor housing;

[0008] And an adjusting assembly, the adjusting assembly comprises a temperature sensor, a driving piece and a controller arranged in the motor housing, the driving piece is arranged at the position of the inner side wall of the rear end cover, and the position of the driving piece corresponds to the position of the inner shell, the temperature sensor transmits temperature information to the controller, the controller controls the driving piece to abut and push the inner shell, changes the position of the inner shell, and adjusts the positional relationship between the through holes two and the through holes one.

[0009] As a preferred embodiment of the above technical scheme, the driving piece comprises a fixed block arranged on the inner side wall of the rear end cover, the fixed block comprises a coaxially arranged annular hole, an elastic movable block is arranged on the side of the fixed block away from the rear end cover, the movable block is provided with an annular groove, the movable block closes one end of the annular hole, and the annular groove and the annular hole correspond in position to form a flow channel with variable volume, and an extension ring is further arranged on the end of the movable block away from the fixed block, and the extension ring corresponds in position to the inner shell.

[0010] As a preferred embodiment of the above technical solution, a liquid inlet pipe and a liquid outlet pipe are provided on the rear end cover at positions corresponding to the flow channel, and regulating valves are provided on both the liquid inlet pipe and the liquid outlet pipe, and the regulating valves are electrically connected to the controller.

[0011] As a preferred embodiment of the above technical solution, a mounting seat is provided on the inner side of the inner shell, a mounting groove 1 is provided on the mounting seat, one end of the inner shell is movably embedded in the mounting groove 1, and a plurality of springs 1 are provided in the mounting groove 1, and the two ends of the spring 1 are respectively connected to the inner wall of the mounting groove 1 and the inner shell.

[0012] As a preferred embodiment of the above technical solution, the fixed block and the movable block are respectively provided with a mounting groove 2 and a plug-in portion at one end close to each other, the plug-in portion is movably embedded in the mounting groove 2, and a plurality of springs 2 are provided in the mounting groove 2, and the two ends of the springs 2 are respectively connected to the inner wall of the mounting groove 2 and the plug-in portion.

[0013] The beneficial effects of the present invention are:

[0014] (1) The present invention is capable of monitoring the internal temperature of the motor housing in real time through the temperature sensor by setting an adjustment component, and transmitting the temperature information to the controller when the temperature rises. The controller controls the driving member to contact the inner housing, change the position of the inner housing, and thereby adjust the position of the through hole 2 to improve the heat dissipation effect, thereby adjusting the heat dissipation mode according to the actual working conditions, and having strong flexibility.

[0015] (2) The present invention provides a fixed block, a movable block and an extension ring, which can change the volume of the flow channel while forming a water cooling cycle, play a driving role on the inner shell, and further increase the heat dissipation effect inside the motor housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic structural diagram of a forklift motor in an embodiment;

[0017] Figure 2 Shown is the actual Figure 1 A schematic diagram of the structure at center A;

[0018] Figure 3 Shown is a schematic diagram of a fixed ring and a movable ring in an embodiment;

[0019] Figure 4 Shown is a schematic structural diagram of the side surface of the fixing ring in the embodiment;

[0020] Figure 5 Shown is Figure 1 Schematic diagram of the enlarged structure at B in the middle;

[0021] Figure 6 Shown is a schematic diagram of a through hole 1 on the housing;

[0022] 10, motor body; 11, cooling fan; 12, air inlet; 20, temperature sensor; 21, shell; 22, through hole one; 31, inner shell; 32, through hole two; 33, mounting seat; 34, mounting groove one; 35, spring one; 41, fixed block; 411, annular hole; 42, movable block; 43, flow channel; 44, extension ring; 45, liquid inlet pipe; 46, liquid outlet pipe; 451, regulating valve; 401, mounting groove two; 402, spring two; 403, plug-in part. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be described below in connection with embodiments.

[0024] EMBODIMENT

[0025] As shown in Figure 1 , Figure 6 , Figure 1 , a structural schematic diagram of a forklift motor in an embodiment is shown; Figure 6 , a schematic diagram of a through hole one on a shell is shown;

[0026] The device comprises:

[0027] A motor casing composed of a front end cover, a rear end cover, and the shell 21, a cooling fan 11 arranged on the inner side wall of the rear end cover, an air inlet 12 arranged on the rear end cover, and a plurality of through holes one 22 arranged on the shell 21 at intervals;

[0028] An inner shell 31 arranged on the inner side of the shell 21, the inner shell 31 movably arranged along the horizontal direction, and a plurality of through holes two 32 arranged on the inner shell 31 at intervals; the through holes one 22 and the through holes two 32 partially overlap and correspond to each other in the normal state, and the overlapping part communicates the outside with the inside of the motor casing;

[0029] A filter screen arranged at the air inlet 12 to prevent dust and impurities from entering, the motor body 10 arranged inside the motor casing, and the inner shell 31 movably mounted on the inner side of the shell 21, as shown in the coordinate system, the X axis represents the horizontal direction, and the Y axis represents the vertical direction, the inner shell 31 can change the position along the X axis direction, thereby changing the position correspondence of the through holes one 22 and the through holes two 32, in the normal state, the cooling fan 11 is turned on, and the through holes one 22 and the through holes two 32 are in a state of not completely aligned, i.e., partially aligned, thereby playing a role of conventional cooling and also playing a role of protection for the inside of the motor casing. Figure 1 By adjusting the position correspondence of the through holes one 22 and the through holes two 32, the cooling intensity can be adjusted, the more the overlapping part of the through holes one 22 and the through holes two 32, the greater the ventilation volume, and the faster the cooling speed and the better the cooling effect.

[0030] ​

[0031] When the inner shell 31 moves to the left, the overlapping part of the through hole one 22 and the through hole two 32 will gradually increase, and the inner shell 31 cannot continue to move to the left when it moves to the state of complete alignment of the through hole one 22 and the through hole two 32.

[0032] As shown in Figure 1 , Figure 1 , a schematic diagram of the structure of the forklift motor in the embodiment is shown.

[0033] It also includes an adjusting assembly, which includes a temperature sensor 20 arranged inside the motor shell, a driving piece arranged at the inner side wall position of the rear end cover, and a controller. The driving piece corresponds to the position of the inner shell 31 and can abut against the inner shell 31 to move it to the left. The temperature sensor 20, the driving piece, and the controller are all signal connected. The temperature sensor 20 transmits temperature information to the controller, and the controller controls the driving piece to abut against the inner shell 31, changes the position of the inner shell 31, and adjusts the position of the through hole two 32.

[0034] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , a schematic diagram of the structure of the forklift motor in the embodiment is shown. Figure 1 Figure 2 , a schematic diagram of the structure of the forklift motor in the embodiment is shown. Figure 1 Figure 3 , a schematic diagram of the structure of the forklift motor in the embodiment is shown. Figure 4

[0035] The driving piece includes a fixed block 41 arranged on the inner side wall of the rear end cover. The fixed block 41 includes a coaxially arranged annular hole 411. An elastic movable block 42 is arranged on the side of the fixed block 41 away from the rear end cover. The movable block 42 is provided with an annular groove. The movable block 42 closes one end of the annular hole 411, and the annular groove and the annular hole 411 correspond in position to form a flow channel 43 with variable volume. An extension ring 44 is further arranged at the end of the movable block 42 away from the fixed block 41, and the extension ring 44 corresponds in position to the inner shell 31.

[0036] The amount of liquid injected into the flow channel 43 is changed, the position of the movable block 42 is adjusted, the extension ring 44 is driven to abut against the inner shell 31, the position of the inner shell 31 is changed to change the position of the through hole two 32, and thus the misalignment state of the through hole one 22 and the through hole two 32 is changed.

[0037] ​​​The flow channel 43 is used to inject and circulate the cooling liquid, which plays a role in further increasing the heat dissipation effect. The fixed block 41 and the movable block 42 are both arranged in a ring shape. When the liquid injected in the flow channel 43 increases, the volume of the flow channel 43 becomes larger, that is, the movable block 42 is pushed to move towards the end close to the inner shell 31, and the extension ring 44 moves together with the movable block 42. During the movement, the extension ring 44 will push the inner shell 31 to change the position of the through hole two 32.

[0038] As shown in Figure 1 , Figure 2 , Figure 1 Fig. 3 shows a structural schematic diagram of the forklift motor in the embodiment; Figure 2 Fig. 4 shows an enlarged schematic diagram of the structure at A in the embodiment; Figure 1 Fig. 5 shows an enlarged schematic diagram of the structure at B in the embodiment;

[0039] The rear end cover is provided with the liquid inlet pipe 45 and the liquid outlet pipe 46 corresponding to the position of the flow channel 43. The liquid inlet pipe 45 and the liquid outlet pipe 46 are both provided with the adjusting valve 451.

[0040] The liquid inlet pipe 45 and the liquid outlet pipe 46 are both externally connected to the cooling source, such as a water tank. The adjusting valve 451 is electrically connected to the controller. The controller can control the adjusting valve 451 to change the flow of the liquid into or out of the flow channel 43. When the flow of the liquid inlet pipe 45 is greater than that of the liquid outlet pipe 46, the liquid in the flow channel 43 will gradually increase, thereby realizing the pushing of the movable block 42.

[0041] As shown in Figure 1 , Figure 5 , Figure 1 Fig. 3 shows a structural schematic diagram of the forklift motor in the embodiment; Figure 5 Fig. 4 shows an enlarged schematic diagram of the structure at A in the embodiment; Figure 1 Fig. 5 shows an enlarged schematic diagram of the structure at B in the embodiment;

[0042] The inner side of the inner shell 31 is provided with the mounting seat 33. The mounting seat 33 is provided with the mounting groove one 34. One end of the inner shell 31 is movably embedded in the mounting groove one 34. A plurality of springs one 35 are arranged in the mounting groove one 34. The two ends of the spring one 35 are respectively connected to the inner wall of the mounting groove one 34 and the inner shell 31.

[0043] The mounting seat 33 and the spring one 35 are arranged to realize the movable mounting of the inner shell 31. When the inner shell 31 is pushed by the driving member on the right side, the spring one 35 will be compressed, and the inner shell 31 will move to the left side.

[0044] As shown in Figure 1 , Figure 2 , Figure 1 Fig. 3 shows a structural schematic diagram of the forklift motor in the embodiment; Figure 2 Fig. 4 shows an enlarged schematic diagram of the structure at A in the embodiment; Figure 1 Fig. 5 shows an enlarged schematic diagram of the structure at B in the embodiment;

[0045] The fixed block 41 and the movable block 42 are provided with mounting slot two 401 and plug-in part 403 at the end close to each other, the plug-in part 403 is movably embedded in the mounting slot two 401, and a plurality of spring two 402 are arranged in the mounting slot two 401, and the two ends of the spring two 402 are connected with the inner wall of the mounting slot two 401 and the plug-in part 403 respectively.

[0046] By arranging the mounting slot two 401 and the plug-in part 403, the movable installation of the movable block 42 is realized,

[0047] Working principle: in normal state, the device is cooled by opening the cooling fan 11, and the through hole one 22 and the through hole two 32 are partially aligned in normal state, which plays a role in conventional cooling and can also protect the inside of the motor shell; when the effect of conventional cooling does not meet the specific working condition, the temperature of the inside of the motor shell will rise, the temperature sensor 20 will transmit the temperature information to the controller, the controller will control the adjusting valve 451 of the liquid inlet pipe 45, increase the liquid inlet flow of the liquid inlet pipe 45, so that the liquid inlet flow is greater than the liquid outlet flow, then the liquid in the flow channel 43 will gradually increase, so as to push the movable block 42, the extension ring 44 at the end of the movable block 42 will touch the inner shell 31, push the inner shell 31 to move to the left side, so that the overlapping part of the through hole one 22 and the through hole two 32 will gradually increase, until the through hole one 22 and the through hole two 32 are completely aligned, at this time, with the increase of the cooling hole, the cooling effect is enhanced, and the temperature gradually decreases, the controller will gradually reduce the liquid inlet flow of the adjusting valve 451 of the liquid inlet pipe 45 until it returns to the normal state.

[0048] The above examples are only used to illustrate the technical solutions of the present application, but not limit it.

Claims

1. High torque counterbalanced flat electric forklift motor, characterized by: include: A motor housing composed of a front cover, a rear cover and an outer shell (21), a heat dissipation fan (11) is provided on the inner side wall of the rear cover, an air inlet (12) is provided on the rear cover, and a plurality of through holes (22) are provided on the outer shell (21) at intervals; An inner shell (31), the inner shell (31) is fitted on the inner side of the outer shell (21), the inner shell (31) is movably arranged in the horizontal direction, a plurality of second through holes (32) are arranged at intervals on the inner shell (31), the first through hole (22) and the second through hole (32) partially overlap and correspond to each other under normal conditions, and the overlapping portion communicates with the outside and the interior of the motor housing; and an adjustment component, the adjustment component comprising a temperature sensor (20) arranged inside the motor housing, a driving member, and a controller, the driving member being arranged at an inner side wall position of the rear end cover, and the driving member corresponding to the position of the inner housing (31), the temperature sensor (20) transmitting temperature information to the controller, the controller controlling the driving member to contact and push the inner housing (31), changing the position of the inner housing (31), and adjusting the positional relationship between the second through hole (32) and the first through hole (22); The driving member includes a fixed block (41) arranged on the inner side wall of the rear end cover, the fixed block (41) includes a coaxially arranged annular hole (411), a movable block (42) is elastically arranged on a side of the fixed block (41) away from the rear end cover, the movable block (42) is provided with an annular groove, the movable block (42) closes one end of the annular hole (411), and the annular groove and the annular hole (411) correspond in position to form a flow channel (43) with a variable volume, and an extension ring (44) is further provided on one end of the movable block (42) away from the fixed block (41), and the extension ring (44) corresponds in position to the inner shell (31).

2. The high-torque counterbalanced flat electric forklift motor according to claim 1, characterized in that: A liquid inlet pipe (45) and a liquid outlet pipe (46) are provided on the rear end cover at positions corresponding to the flow channel (43), and a regulating valve (451) is provided on each of the liquid inlet pipe (45) and the liquid outlet pipe (46), and the regulating valve (451) is electrically connected to the controller.

3. The high-torque counterbalanced flat electric forklift motor according to claim 1, characterized in that: A mounting seat (33) is provided on the inner side of the inner shell (31), and a mounting groove (34) is provided on the mounting seat (33). One end of the inner shell (31) is movably embedded in the mounting groove (34), and a plurality of springs (35) are provided in the mounting groove (34). The two ends of the springs (35) are respectively connected to the inner wall of the mounting groove (34) and the inner shell (31).

4. The high-torque counterbalanced flat electric forklift motor according to claim 2, characterized in that: The fixed block (41) and the movable block (42) are respectively provided with a second mounting groove (401) and a plug-in portion (403) at one end close to each other. The plug-in portion (403) is movably embedded in the second mounting groove (401), and a plurality of second springs (402) are provided in the second mounting groove (401). The two ends of the second springs (402) are respectively connected to the inner wall of the second mounting groove (401) and the plug-in portion (403).

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