Motor shaft quenching device

Abstract

The invention relates to the technical field of motor shaft quenching, in particular to a motor shaft quenching device which comprises a bottom plate, a cooling barrel, a workbench, a supporting frame, a limiting ring, a limiting rod and the like. The left side of the top of the bottom plate is fixedly connected with a workbench, the right side of the workbench is fixedly connected with a supporting frame, the rear side of the left portion of the supporting frame is rotationally connected with a limiting ring, and the front side of the left portion of the supporting frame is rotationally connected with a limiting rod. Through cooperation of the placing mechanism and the pushing mechanism, a plurality of motor shaft bodies can be machined in sequence, a worker only needs to install a placing frame on a first installation frame at the beginning, the worker does not need to manually feed the motor shaft bodies one by one, and therefore the situation that the worker makes contact with an electric heating wire and is scalded is avoided, the labor intensity of the worker can be reduced, and the working efficiency is improved. And the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of motor shaft quenching, and in particular to a motor shaft quenching device. Background Art

[0002] There are tolerance matching requirements for the bearing installation of the motor shaft body. If the finish of this area is too poor, it will not be able to meet the dimensional accuracy requirements. The material that has not been quenched is relatively soft, and it is difficult to obtain a high degree of finish on the surface of the motor shaft body during processing. Therefore, the main purpose of local quenching at the position where the bearing is installed on the motor shaft body is to harden the surface of the motor shaft body, thereby making it easier to process the surface of the motor shaft body to a higher degree of finish and ensure the smooth assembly of the bearing.

[0003] The existing motor shaft quenching device is equipped with a heater, a heating wire, a limit rod and a cooling barrel. A worker manually passes the motor shaft body through the heating wire and places it on the limit rod. The heater is started to allow the heating wire to heat the motor shaft body. The limit rod is then turned to release the heated motor shaft body and the motor shaft body is allowed to fall into the cooling barrel, thereby completing the quenching process.

[0004] However, with this quenching method, workers have to add materials manually and can only take 6 to 7 motor shaft bodies at a time. The workers need to take them repeatedly, which can easily make them feel tired, thereby reducing processing efficiency. In addition, when the motor shaft body is placed in the heating wire, it will generate a lot of heat, and there is a certain risk of burns when adding materials manually. Summary of the invention

[0005] In order to overcome the shortcomings of the existing motor shaft quenching method of manual feeding, easy scalding and fatigue, the present invention provides a motor shaft quenching device capable of automatic feeding.

[0006] A motor shaft quenching device includes a base plate, a cooling barrel, a workbench, a support frame, a limit ring, a limit rod, a heater and an electric heating wire. A cooling barrel is placed on the right side of the top of the base plate, a workbench is fixedly connected to the left side of the top of the base plate, a support frame is fixedly connected to the right side of the workbench, a limit ring is rotatably connected to the rear side of the left part of the support frame, a limit rod is rotatably connected to the front side of the left part of the support frame, a heater is fixedly connected to the workbench, an electric heating wire is arranged on the right side of the heater, and a placing mechanism and a pushing mechanism are also included. The supporting frame is provided with a placing mechanism for placing a motor shaft body, and the placing mechanism is provided with a pushing mechanism for pushing the motor shaft bodies one by one.

[0007] Furthermore, the placement mechanism includes a mounting frame, a placement frame, a motor shaft body, a push plate, a baffle, a reset spring, a cross limit plate and a limit block. A mounting frame is fixedly connected to the upper part of the support frame, and a placement frame is slidably connected to the mounting frame. Multiple motor shaft bodies can be placed in the placement frame. The front and rear panels of the placement frame are symmetrically provided with strip openings, a push plate is slidably connected between the four strip openings, a baffle is slidably connected to the left side of the placement frame, a reset spring is connected between the baffle and the placement frame, a cross limit plate is fixedly connected to the left side of the baffle, and a limit block is symmetrically fixedly connected to the left side of the placement frame.

[0008] Furthermore, the pushing mechanism includes a mounting frame 2, a servo motor, a missing gear, a fixed seat 1, a rack and a push plate 2. The mounting frame 2 is fixedly connected to the right side of the top of the support frame, the servo motor 1 is fixedly connected to the upper part of the mounting frame 2, the output shaft end of the servo motor 1 is key-connected with the missing gear, the fixing seat 1 is fixedly connected to the right side of the upper part of the mounting frame 1, the fixing seat 1 is slidably connected with a rack, the missing gear can mesh with the rack, and the left end of the rack is fixedly connected to the push plate 2.

[0009] Furthermore, it also includes a fixed seat 2, a clamp and a reset spring 2. Four fixed seats 2 are symmetrically fixedly connected on the front and rear sides of the placement frame. A clamp is slidably connected between two fixed seats 2 located on the same side and at the same height. A reset spring 2 is arranged between the clamp and the adjacent fixed seat 2.

[0010] Furthermore, a side of the clamping plate away from the adjacent second fixing seat is arranged in a wave shape.

[0011] Furthermore, it also includes a sliding rod, a return spring three, a special-shaped rod, a lever and a fixed plate. The sliding rod is symmetrically slidably connected to the middle part of the second mounting frame, and a return spring three is arranged between the right end of the sliding rod and the second mounting frame. The special-shaped rod is fixedly connected between the two sliding rods, and the lever is fixedly connected to the rear side of the missing gear. The lever can contact the upper part of the special-shaped rod, and the lower end of the limit rod is fixedly connected to the fixing plate, and the fixing plate is fitted with the lower end of the special-shaped rod.

[0012] Furthermore, it also includes a limiting cylinder, a fixed seat three, a buffer plate and a reset spring four. The limiting cylinder is fixedly connected to the left side of the bottom of the support frame, and the fixed seat three is symmetrically fixedly connected to the left side of the limiting cylinder. A buffer plate is rotatably connected between the two fixed seats three, and a reset spring four is arranged at the connection between the buffer plate and the fixed seat three.

[0013] Furthermore, the buffer plate is made of high temperature resistant plastic material.

[0014] Furthermore, it also includes a servo motor 2 and a fan blade. The servo motor 2 is fixedly connected to the middle of the support frame, and the fan blade is key-connected to the end of the output shaft of the servo motor 2.

[0015] Furthermore, it also includes a protrusion, and a protrusion is arranged at the connection between the placement frame and the mounting frame 1 to increase the friction between the mounting frame 1 and the placement frame.

[0016] Compared with the prior art, the present invention has the following advantages: 1. Through the cooperation of the placement mechanism and the pushing mechanism, multiple motor shaft bodies can be processed in sequence. Workers only need to install the placement frame on the mounting frame at the beginning, and workers do not need to manually load the motor shaft bodies one by one, thereby avoiding workers from contacting with the heating wire and getting burned, and can also reduce the labor intensity of workers, thereby improving production efficiency.

[0017] 2. The lever pushes the special-shaped rod, and the special-shaped rod pushes the fixed plate to drive the limit rod to rotate, thereby releasing the limit on the motor shaft body, realizing the automation of rotating the limit rod, and there is no need for workers to manually rotate the limit rod, which improves the convenience of using the device. A buffer plate and a return spring are optimally arranged. The buffer plate decelerates the motor shaft body that is about to fall into the cooling barrel, so that the motor shaft body slides into the coolant at a lower speed, which can reduce the splash of water.

[0018] 3. The second servo motor drives the fan blades to rotate, thereby accelerating the flow rate of air above the cooling barrel, and then accelerating the heat exchange efficiency between the coolant and the air in the cooling barrel, thereby enhancing the cooling effect of the coolant on the motor shaft body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0021] Figure 3 A schematic diagram of a partial three-dimensional structure of the placement mechanism of the present invention Figure 1 .

[0022] Figure 4 A schematic diagram of a partial three-dimensional structure of the placement mechanism of the present invention Figure 2 .

[0023] Figure 5 A schematic diagram of a partial three-dimensional structure of the placement mechanism of the present invention Figure 3 .

[0024] Figure 6 A schematic diagram of a partial three-dimensional structure of the pushing mechanism of the present invention Figure 1 .

[0025] Figure 7 A schematic diagram of a partial three-dimensional structure of the pushing mechanism of the present invention Figure 2 .

[0026] Figure 8It is a schematic diagram of the three-dimensional structure of the fixing seat 2 and the clamping plate of the present invention.

[0027] Fig. 9 It is a three-dimensional structural schematic diagram of the second fixing seat, the clamping plate and the second reset spring of the present invention.

[0028] Fig.10 It is a schematic diagram of the three-dimensional structure of the sliding rod, the special-shaped rod and the shifting rod etc. of the present invention.

[0029] Fig.11 It is a schematic diagram of the three-dimensional structure of the special-shaped rod, the shift rod and the fixing plate of the present invention.

[0030] Fig.12 It is a schematic diagram of the three-dimensional structure of the limiting cylinder, the fixing seat and the buffer plate of the present invention.

[0031] Fig.13 It is a three-dimensional structural schematic diagram of the fixing seat 3, the buffer plate and the return spring 4 of the present invention.

[0032] Fig.14 It is a schematic diagram of the three-dimensional structure of the servo motor 2 and the fan blades of the present invention.

[0033] Fig.15 It is a schematic diagram of the three-dimensional structure of the bump of the present invention.

[0034] In the accompanying drawings: 1_bottom plate, 2_cooling barrel, 3_workbench, 31_support frame, 32_limiting ring, 33_limiting rod, 4_heater, 5_heating wire, 6_placing mechanism, 61_mounting frame 1, 62_placing frame, 001_motor shaft body, 63_strip opening, 64_push plate 1, 65_baffle, 66_reset spring 1, 67_cross limiting plate, 68_limiting block, 7_pushing mechanism, 71_mounting frame 2, 72_ Servo motor one, 73_missing gear, 74_fixed seat one, 75_rack, 751_push plate two, 81_fixed seat two, 82_clamp, 83_reset spring two, 91_sliding rod, 92_reset spring three, 93_special-shaped rod, 94_shift rod, 95_fixed plate, 101_limiting cylinder, 102_fixed seat three, 103_buffer plate, 104_reset spring four, 111_servo motor two, 112_fan blade, 12_bump. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0036] A motor shaft quenching device, such as Figure 1-Figure 15 As shown, it includes a base plate 1, a cooling barrel 2, a workbench 3, a support frame 31, a limit ring 32, a limit rod 33, a heater 4 and a heating wire 5. The cooling barrel 2 is placed on the top right side of the base plate 1, and the workbench 3 is connected to the top left side of the base plate 1 by bolts. The support frame 31 is welded to the right side of the workbench 3. The left rear side of the support frame 31 is rotatably connected to the limit ring 32, and the left front side of the support frame 31 is rotatably connected to the limit rod 33. The workbench 3 is connected to the heater 4 by bolts, and the heating wire 5 is arranged on the right side of the heater 4. It also includes a placing mechanism 6 and a pushing mechanism 7. The support frame 31 is provided with a placing mechanism 6 for placing the motor shaft body 001, and the placing mechanism 6 is provided with a pushing mechanism 7 for pushing the motor shaft body 001 one by one.

[0037] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the placement mechanism 6 includes a mounting frame 61, a placement frame 62, a motor shaft body 001, a push plate 64, a baffle 65, a reset spring 66, a cross limit plate 67 and a limit block 68. The upper part of the support frame 31 is welded with the mounting frame 61, and the placement frame 62 is slidably connected to the mounting frame 61. A circular hole is opened on the left side of the bottom panel of the placement frame 62, and the motor shaft body 001 can fall out of the placement frame 62 from the circular hole. Multiple motor shaft bodies 001 can be placed in the placement frame 62, and strip openings 63 are symmetrically opened on the front and rear panels of the placement frame 62. A push plate 64 is slidably connected between the four strip openings 63, and a baffle 65 is slidably connected to the left side of the placement frame 62. A reset spring 66 is connected between the baffle 65 and the placement frame 62, a cross limit plate 67 is welded on the left side of the baffle 65, and a limit block 68 is symmetrically welded on the left side of the placement frame 62.

[0038] like Figure 1 , Figure 6 and Figure 7 As shown, the pushing mechanism 7 includes a mounting frame 2 71, a servo motor 1 72, a missing gear 73, a fixing seat 1 74, a rack 75 and a push plate 2 751. The mounting frame 2 71 is welded to the right side of the top of the support frame 31, the upper part of the mounting frame 2 71 is connected to the servo motor 1 72 by bolts, the end of the output shaft of the servo motor 1 72 is keyed to the missing gear 73, the upper right side of the mounting frame 1 61 is welded to the fixing seat 1 74, the fixing seat 1 74 is slidably connected to the rack 75, the missing gear 73 can mesh with the rack 75, and the left end of the rack 75 is welded to the push plate 2 751.

[0039] Initially, the worker takes a placement frame 62, slides the push plate to the leftmost side of the placement frame 62, and sequentially arranges and places an appropriate amount of motor shaft bodies 001 in the placement frame 62 until the motor shaft body 001 on the leftmost side contacts the baffle 65, starts the heater 4, and slides the placement frame 62 onto the mounting frame 1 61. When the placement frame 62 slides downward on the mounting frame 1 61, the cross limit plate 67 moves downward with the placement frame 62, contacts the inclined surface of the limit block 68, and moves to the left along the inclined surface of the limit block 68, thereby driving the baffle 65 to move forward one motor shaft body 001. 1 diameter, at this time, the reset spring 1 66 is compressed, and the round hole on the left side of the bottom panel of the placement plate is opened, and the motor shaft body 001 can fall out of the placement frame 62 from the round hole. After the placement frame 62 is installed on the sliding frame 1, the worker can start the servo motor 1 72, and the servo motor 1 72 drives the missing gear 73 to rotate. Each rotation of the missing gear 73 pushes the rack 75 to move to the left by a distance of the motor shaft body 001 diameter, and the push plate 2 751 follows the rack 75 to move to the left, thereby pushing the push plate 1 64 to move to the left by a distance of the motor shaft body 001 diameter, and then pushing The motor shaft body 001 in the movable placement frame 62 moves to the left by a distance of the motor shaft body 001 diameter, and the motor shaft body 001 located on the far left is pushed to be located above the above-mentioned circular hole. At this time, the motor shaft body 001 falls out of the placement frame 62 from the above-mentioned circular hole, passes through the limiting ring 32 and falls on the limiting rod 33. The middle part of the motor shaft body 001 is limited by the limiting ring 32, and the upper part is located in the electric heating wire 5. Due to the heating effect of the eddy current, the part of the upper part of the motor shaft body 001 connected to the bearing is heated. After the heating is completed, the worker rotates the limiting rod 33 to release the limiting rod 33. The limit at the bottom of the motor shaft body 001 allows it to fall downward into the cooling barrel 2 for cooling. At this point, the quenching process of a single motor shaft body 001 is completed. When the motor drives the missing gear 73 to continue to rotate, the motor shaft bodies 001 are pushed down to the heating wire 5 one by one to complete the heating process. The worker only needs to rotate the limit rod 33 to allow the motor shaft body 001 to fall into the cooling barrel 2. In this way, there is no need to manually install the motor shaft bodies 001 one by one, which can avoid burns. At the same time, the automatic loading of the motor shaft body 001 can also be realized, thereby improving work efficiency. Example 2

[0040] On the basis of Example 1, Figure 1 , Figure 8 and Fig. 9As shown, it also includes a fixed seat 2 81, a clamping plate 82 and a reset spring 2 83. Four fixed seats 2 81 are symmetrically welded and connected on the front and rear sides of the placement frame 62. A clamping plate 82 is slidably connected between two fixed seats 2 81 located on the same side and at the same height. The side of the clamping plate 82 away from the adjacent fixed seat 2 81 is wavy in shape, which is convenient for stably clamping each motor shaft body 001. A reset spring 2 83 is arranged between the clamping plate 82 and the adjacent fixed seat 2 81.

[0041] The second return spring 83 presses the clamping plate 82, and the clamping plate 82 clamps the motor shaft body 001 in the placement plate, thereby preventing the motor shaft body 001 from tilting when the baffle plate 65 moves to the left, thereby preventing the unfavorable effect on the blanking.

[0042] like Figure 1 , Fig.10 and Fig.11 As shown, it also includes a sliding rod 91, a return spring three 92, a special-shaped rod 93, a lever 94 and a fixed plate 95. The sliding rod 91 is symmetrically slidably connected to the middle part of the second mounting frame 71, and a return spring three 92 is arranged between the right end of the sliding rod 91 and the second mounting frame 71. The special-shaped rod 93 is welded between the two sliding rods 91. The rear side of the missing gear 73 is welded with a lever 94, and the lever 94 can contact the upper part of the special-shaped rod 93. The lower end of the limiting rod 33 is welded with a fixed plate 95, and the fixed plate 95 is fitted with the lower end of the special-shaped rod 93.

[0043] When the missing gear 73 drives the rack 75 to move to the left, the missing gear 73 continues to rotate, thereby driving the shift rod 94 to contact and squeeze the top of the special-shaped rod 93. Since the special-shaped rod 93 is fixedly connected to the sliding rod 91, and the sliding rod 91 is slidably connected to the mounting frame 2 71, the shift rod 94 will push the special-shaped rod 93 to move to the right. At this time, the return spring three 92 is compressed. When the special-shaped rod 93 moves to the right, its bottom end drives the limit rod 33 to rotate by pushing the fixed plate 95, thereby releasing the limit on the motor shaft body 001. In this way, the automation of the rotation of the limit rod 33 is realized, and there is no need for workers to manually rotate the limit rod 33, thereby improving the convenience of using the device.

[0044] like Figure 1 , Fig.12 and Fig.13 As shown, it also includes a limiting cylinder 101, a fixed seat three 102, a buffer plate 103 and a reset spring four 104. The limiting cylinder 101 is welded to the left side of the bottom of the support frame 31, and the limiting cylinder 101 is welded to the left side of the front and back symmetrically with the fixed seat three 102. The buffer plate 103 is rotatably connected between the two fixed seats three 102. The buffer plate 103 is made of high-temperature resistant plastic material to prevent the buffer plate 103 from scratching the motor shaft body 001. A reset spring four 104 is arranged at the connection between the buffer plate 103 and the fixed seat three 102.

[0045] When the motor shaft body 001 falls downward from the limiting ring 32, the motor shaft body 001 contacts the buffer plate 103. At this time, the reset spring four 104 is twisted. Under the reset action of the reset spring four 104, the buffer plate 103 decelerates the falling motor shaft body 001, so that the motor shaft body 001 falls into the coolant at a lower speed, thereby avoiding splashing of water.

[0046] like Figure 1 and Fig.13 As shown, it also includes a servo motor 111 and a fan blade 112. The servo motor 111 is fixedly connected to the middle of the support frame 31, and the fan blade 112 is keyed to the end of the output shaft of the servo motor 111.

[0047] When multiple heated motor shaft bodies 001 fall into the cooling barrel 2, the worker can start the cabinet servo motor 111, and the servo motor 111 drives the fan blades 112 to rotate, thereby accelerating the flow speed of air above the cooling barrel 2, and then accelerating the heat exchange efficiency between the coolant and the air in the cooling barrel 2, and enhancing the cooling effect of the coolant.

[0048] like Figure 1 and Fig.15 As shown, a protrusion 12 is also included. The protrusion 12 is provided at the connection between the placement frame 62 and the mounting frame 1 61 to increase the friction between the mounting frame 1 61 and the placement frame 62.

[0049] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A motor shaft quenching device, comprising a base plate (1), a cooling barrel (2), a workbench (3), a support frame (31), a limiting ring (32), a limiting rod (33), a heater (4) and an electric heating wire (5), wherein a cooling barrel (2) is placed on the right side of the top of the base plate (1), a workbench (3) is fixedly connected to the left side of the top of the base plate (1), a support frame (31) is fixedly connected to the right side of the workbench (3), a left rear side of the support frame (31) is rotatably connected to the limiting ring (32), a left front side of the support frame (31) is rotatably connected to the limiting rod (33), a heater (4) is fixedly connected to the workbench (3), and an electric heating wire (5) is arranged on the right side of the heater (4), characterized in that: It also includes a placement mechanism (6) and a pushing mechanism (7); the support frame (31) is provided with a placement mechanism (6) for placing the motor shaft body (001); and the placement mechanism (6) is provided with a pushing mechanism (7) for pushing the motor shaft body (001) one by one.

2. A motor shaft quenching device according to claim 1, characterized in that: The placement mechanism (6) comprises a mounting frame (61), a placement frame (62), a motor shaft body (001), a push plate (64), a baffle (65), a return spring (66), a cross limit plate (67) and a limit block (68). The upper part of the support frame (31) is fixedly connected to the mounting frame (61), the mounting frame (61) is slidably connected to the placement frame (62), a plurality of motor shaft bodies (001) can be placed in the placement frame (62), the front and rear panels of the placement frame (62) are both symmetrically provided with strip openings (63) in the upper and lower directions, a push plate (64) is slidably connected between the four strip openings (63), a baffle (65) is slidably connected to the left side of the placement frame (62), a return spring (66) is connected between the baffle (65) and the placement frame (62), a cross limit plate (67) is fixedly connected to the left side of the baffle (65), and a limit block (68) is symmetrically fixedly connected to the left side of the placement frame (62).

3. A motor shaft quenching device according to claim 2, characterized in that: The pushing mechanism (7) comprises a second mounting frame (71), a servo motor (72), a missing gear (73), a fixing seat (74), a rack (75) and a second push plate (751). The second mounting frame (71) is fixedly connected to the right side of the top of the support frame (31), the servo motor (72) is fixedly connected to the upper part of the second mounting frame (71), the missing gear (73) is key-connected to the end of the output shaft of the servo motor (72), the first mounting frame (61) is fixedly connected to the right side of the upper part of the first mounting frame (61), the first fixing seat (74) is slidably connected to the first fixing seat (74), the missing gear (73) can mesh with the rack (75), and the left end of the rack (75) is fixedly connected to the second push plate (751).

4. A motor shaft quenching device according to claim 3, characterized in that: It also includes a second fixing seat (81), a clamping plate (82) and a second return spring (83). Four second fixing seats (81) are symmetrically fixedly connected on the front and rear sides of the placement frame (62). A clamping plate (82) is slidably connected between two second fixing seats (81) located on the same side and at the same height. A second return spring (83) is arranged between the clamping plate (82) and the adjacent second fixing seat (81).

5. A motor shaft quenching device according to claim 4, characterized in that: The side of the clamping plate (82) away from the adjacent second fixing seat (81) is arranged in a wave shape.

6. A motor shaft quenching device according to claim 5, characterized in that: The device also comprises a sliding rod (91), a third return spring (92), a special-shaped rod (93), a lever (94) and a fixing plate (95); the middle part of the second mounting frame (71) is symmetrically slidably connected with the sliding rod (91) in the upper and lower parts; a third return spring (92) is arranged between the right end of the sliding rod (91) and the second mounting frame (71); a special-shaped rod (93) is fixedly connected between the two sliding rods (91); a lever (94) is fixedly connected to the rear side of the missing gear (73); the lever (94) can contact the upper part of the special-shaped rod (93); the lower end of the limiting rod (33) is fixedly connected with the fixing plate (95); the fixing plate (95) is fitted with the lower end of the special-shaped rod (93).

7. A motor shaft quenching device according to claim 6, characterized in that: It also comprises a limiting cylinder (101), a third fixing seat (102), a buffer plate (103) and a fourth return spring (104); the limiting cylinder (101) is fixedly connected to the left side of the bottom of the support frame (31); the limiting cylinder (101) is symmetrically fixedly connected to the third fixing seat (102) on the left side of the limiting cylinder (101); the buffer plate (103) is rotatably connected between the two third fixing seats (102); and a fourth return spring (104) is provided at the connection between the buffer plate (103) and the third fixing seat (102).

8. A motor shaft quenching device according to claim 7, characterized in that: The buffer plate (103) is made of high temperature resistant plastic material.

9. A motor shaft quenching device according to claim 8, characterized in that: It also includes a servo motor 2 (111) and a fan blade (112). The middle part of the support frame (31) is fixedly connected to the servo motor 2 (111), and the end of the output shaft of the servo motor 2 (111) is key-connected to the fan blade (112).

10. A motor shaft quenching device according to claim 9, characterized in that: It also includes a protrusion (12), which is provided at the connection between the placement frame (62) and the mounting frame 1 (61) to increase the friction between the mounting frame 1 (61) and the placement frame (62).

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