Rotating shaft test equipment of three-phase asynchronous motor

Abstract

The utility model discloses a rotating shaft testing device of a three-phase asynchronous motor, comprising a three-phase asynchronous motor and a rotating shaft, one end of the rotating shaft far away from the three-phase asynchronous motor is plugged with a transmission cylinder, the outer side of the transmission cylinder is in threaded connection with a plurality of positioning bolts, the positioning bolts are used for fastening the rotating shaft, and the rotating shaft is connected with the transmission cylinder. Meshing teeth are installed on the outer side of the transmission cylinder, the transmission cylinder is in meshed connection with an auxiliary gear through the meshing teeth, one side of the auxiliary gear is in meshed connection with a plurality of detection gears, the specifications of the detection gears are different, a supporting plate is installed on one side of the auxiliary gear, and the supporting plate is connected with the transmission cylinder through the meshing teeth. The transmission cylinder, the auxiliary gear and the detection gear are rotationally mounted on one side of the supporting plate; according to the utility model, by detecting the rotation speed of the outmost gearwheel and then carrying out backstepping according to the gear ratio, the rotation data of the rotating shaft can be obtained, and the rotation data of the rotating shaft can be conveniently detected.

Description

Technical Field

[0001] The utility model relates to the technical field of motor detection, in particular to a shaft testing device for a three-phase asynchronous motor. Background Art

[0002] The three-phase asynchronous motor is a type of induction motor that is powered by a 380V three-phase AC current (with a phase difference of 120 degrees). The rotor and stator rotating magnetic fields rotate in the same direction but at different speeds, resulting in a slip.

[0003] In order to ensure the stability of the rotating shaft during rotation, it is necessary to perform rotation detection to ensure that its rotation speed meets the standard and ensure safety and stability during normal use. However, when using existing detection devices, they generally directly observe and detect the rotating shaft. Since the rotating shaft itself is small in size, its rotation data cannot be accurately detected when it rotates rapidly, which easily causes errors in the detection data and affects the accuracy of the detection data.

[0004] Therefore, we provide a shaft testing device for three-phase asynchronous motors. Utility Model Content

[0005] The purpose of the present invention is to provide a three-phase asynchronous motor shaft testing device to improve the accuracy of detection data in order to solve the above-mentioned technical problems.

[0006] In view of this, the utility model provides a shaft testing device for a three-phase asynchronous motor, comprising a three-phase asynchronous motor and a shaft, wherein a transmission cylinder is connected to one end of the shaft away from the three-phase asynchronous motor, and a positioning bolt is screwed on the outer side of the transmission cylinder, and there are several positioning bolts, and the positioning bolts are used to fasten the shaft, and meshing teeth are installed on the outer side of the transmission cylinder, and the transmission cylinder is meshed with an auxiliary gear through the meshing teeth, and one side of the auxiliary gear is meshed with a detection gear, and there are several detection gears, and the specifications of the several detection gears are inconsistent, and a support plate is installed on one side of the auxiliary gear, and the transmission cylinder, the auxiliary gear, and the detection gear are all rotatably installed on one side of the support plate.

[0007] Preferably, a plurality of support holes are provided through the support plate, and a rotating ring is provided through the middle of the support hole.

[0008] Preferably, a plug-in block is installed at one end of the rotating ring, the plug-in block is plugged with a plug-in slot, and the plug-in slot is opened in the middle of the auxiliary gear.

[0009] Preferably, the rotating ring is plugged with a positioning ring, and the positioning ring is located on one side of the plug-in block. The positioning ring and the plug-in block are both provided with fastening grooves for fastening support.

[0010] Preferably, the auxiliary gear and the middle portion of the detection gear are connected in the same manner, and the detection gear is plugged into the plug-in block through the plug-in slot.

[0011] Preferably, a rotating rod is installed on the side of the transmission cylinder away from the rotating shaft, and the transmission cylinder is rotatably connected to the support hole through the rotating rod.

[0012] Preferably, a support frame is provided at the lower end of the three-phase asynchronous motor, and the support frame is used for height adjustment and fastening support.

[0013] Compared with the prior art, the present invention provides a three-phase asynchronous motor shaft testing device, which has the following beneficial effects:

[0014] The utility model sets the specifications of the transmission cylinder, the auxiliary gear, and the detection gear to be larger in sequence, so that by controlling their specifications, the effect of the small gear driving the large gear can be formed. By detecting the rotation speed of the outermost large gear and then reversely deducing according to the gear ratio, the rotation data of the shaft can be obtained, which is convenient for detecting the rotation data of the shaft.

[0015] The utility model improves the diversity and convenience of device detection by using detection gears of different specifications and installing them on one side of the corresponding support hole.

[0016] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view structural diagram of a shaft testing device for a three-phase asynchronous motor proposed in the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the transmission mode of a shaft testing device for a three-phase asynchronous motor proposed in the present invention;

[0019] Figure 3 This is an exploded diagram of the fastening method of the shaft testing device of a three-phase asynchronous motor proposed in the utility model;

[0020] Figure 4 This is a schematic diagram of the front view of the transmission cylinder of the shaft testing equipment of a three-phase asynchronous motor proposed by the present invention;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of a support plate of a shaft testing device for a three-phase asynchronous motor proposed in the present invention.

[0022] In the figure: 1. three-phase asynchronous motor; 2. rotating shaft; 3. transmission cylinder; 4. positioning bolt; 5. meshing teeth; 6. rotating rod; 7. auxiliary gear; 8. plug-in slot; 9. plug-in block; 10. positioning ring; 11. rotating ring; 12. detection gear; 13. support plate; 14. support hole; 15. support frame. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] Example 1: A three-phase asynchronous motor shaft testing device, such as Figure 1-Figure 5 As shown, it includes a three-phase asynchronous motor 1 and a rotating shaft 2. A transmission cylinder 3 is inserted into the end of the rotating shaft 2 away from the three-phase asynchronous motor 1. A positioning bolt 4 is screwed on the outer side of the transmission cylinder 3. There are several positioning bolts 4. The positioning bolts 4 are used to fasten the rotating shaft 2. Meshing teeth 5 are installed on the outer side of the transmission cylinder 3. The transmission cylinder 3 is meshed with an auxiliary gear 7 through the meshing teeth 5. One side of the auxiliary gear 7 is meshed with a detection gear 12. There are several detection gears 12, and the specifications of the several detection gears 12 are inconsistent. A support plate 13 is installed on one side of the auxiliary gear 7. The transmission cylinder 3, the auxiliary gear 7, and the detection gear 12 are all rotatably installed on one side of the support plate 13.

[0026] When the device is used for detection, the rotating shaft 2 is first plugged into the transmission cylinder 3, and then the positioning bolt 4 is rotated to tighten the rotating shaft 2. Then, the three-phase asynchronous motor 1 is started to drive the rotating shaft 2 and the transmission cylinder 3 to rotate simultaneously. Based on the meshing transmission of the meshing teeth 5 and the auxiliary gear 7, and based on the meshing transmission of the auxiliary gear 7 and the detection gear 12, the transmission cylinder 3 and the auxiliary gear 7, and the auxiliary gear 7 and the detection gear 12 are sequentially driven and rotated. In addition, the specifications of the transmission cylinder 3, the auxiliary gear 7, and the detection gear 12 are set to be larger in sequence, so that by controlling their specifications, the effect of the small gear driving the large gear can be formed. By detecting the rotation speed of the outermost large gear and then reversely deducing according to the gear ratio, the rotation data of the rotating shaft 2 can be obtained. By converting the rotation of the small gear into the rotation of the large gear and observing the rotation speed of the large gear, it is convenient to detect the rotation data of the rotating shaft 2, thereby improving the stability of the observation of the detection data of the rotating shaft 2. Based on the consistency of the specifications of each positioning bolt 4, each positioning bolt 4 is rotated the same number of times, so that the rotating shaft 2 is in the accurate middle position.

[0027] like Figure 1-Figure 5 As shown, a plurality of support holes 14 are formed through the support plate 13 , and a rotating ring 11 is formed through the middle of the support hole 14 .

[0028] Under the guidance and rotation support of the support hole 14, the stability and accuracy of the use position of the auxiliary gear 7 and the detection gear 12 are guaranteed. In addition, according to the different specifications of the materials to be detected, detection gears 12 of different specifications are used and installed on one side of the corresponding support hole 14, thereby improving the diversity and convenience of the device detection.

[0029] like Figure 1-Figure 5 As shown, a plug-in block 9 is installed at one end of the rotating ring 11 , and the plug-in block 9 is plugged with a plug-in slot 8 , which is opened in the middle of the auxiliary gear 7 .

[0030] The rotating ring 11 is plugged with a positioning ring 10 , which is located on one side of the plug-in block 9 . Both the positioning ring 10 and the plug-in block 9 are provided with fastening grooves for fastening support.

[0031] First, plug the plug-in block 9, the rotating ring 11 and the plug-in groove 8, then plug the rotating ring 11 and the support hole 14, and then put the positioning ring 10 on the outside of the rotating ring 11, and use bolts to limit and fix the positioning ring 10 and the plug-in block 9. Finally, rotate the nut on the outside of the rotating ring 11 to limit the auxiliary gear 7 to one side of the support plate 13 to ensure the stability of its position during rotation transmission.

[0032] Example 2: A three-phase asynchronous motor shaft testing device, such as Figure 1-Figure 5 As shown, the auxiliary gear 7 and the middle part of the detection gear 12 are connected in the same manner, and the detection gear 12 is plugged into the plug-in block 9 through the plug-in slot 8.

[0033] The detection gear 12 and one side of the auxiliary gear 7 are limited and fixed, and are engaged with each other to ensure the stability and accuracy of their rotational positions, thereby improving the stability and accuracy of the device when detecting transmission.

[0034] like Figure 1-Figure 5 As shown, a rotating rod 6 is installed on the side of the transmission cylinder 3 away from the rotating shaft 2, and the transmission cylinder 3 is rotatably connected to the support hole 14 through the rotating rod 6.

[0035] Under the guidance and limitation of the rotating rod 6, the position of the transmission cylinder 3 is guaranteed to be stable and accurate during rotation, thereby improving the accuracy of the data during transmission.

[0036] like Figure 1-Figure 5 As shown, a support frame 15 is provided at the lower end of the three-phase asynchronous motor 1, and the support frame 15 is used for height adjustment and fastening support.

[0037] By adjusting the height of the support frame 15 and the tightness of the limit of the three-phase asynchronous motor 1, the detection position of the three-phase asynchronous motor 1 is ensured to be accurate, while improving the accuracy of the detection of three-phase asynchronous motors 1 of different specifications, thereby improving the applicability of the device for detection and use.

[0038] Working principle: First, connect the rotating shaft 2 with the transmission cylinder 3, then rotate the positioning bolt 4 to tighten the rotating shaft 2, and at the same time connect and fix the rotating rod 6 with the support plate 13, and limit the placement of the auxiliary gear 7 and the detection gear 12 in turn, and make them mesh with each other, and then start the three-phase asynchronous motor 1 to drive the rotating shaft 2 and the transmission cylinder 3 to rotate at the same time, and drive the auxiliary gear 7 and the detection gear 12 to rotate synchronously, which can form the effect of the small gear driving the large gear, so that by detecting the rotation speed of the outermost large gear and then reversely deducing according to the gear ratio, the rotation data of the rotating shaft 2 can be obtained, which is convenient for detecting the rotation data of the rotating shaft 2, thereby improving the stability of observing the detection data of the rotating shaft 2.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A three-phase asynchronous motor shaft testing device, comprising a three-phase asynchronous motor (1) and a shaft (2), wherein a transmission cylinder (3) is plugged into one end of the shaft (2) away from the three-phase asynchronous motor (1), and characterized in that: The outer side of the transmission cylinder (3) is screwed with a positioning bolt (4), and there are a plurality of positioning bolts (4). The positioning bolts (4) are used to fasten the rotating shaft (2). The outer side of the transmission cylinder (3) is equipped with meshing teeth (5). The transmission cylinder (3) is meshed with an auxiliary gear (7) through the meshing teeth (5). One side of the auxiliary gear (7) is meshed with a detection gear (12). There are a plurality of detection gears (12), and the specifications of the plurality of detection gears (12) are inconsistent. A support plate (13) is installed on one side of the auxiliary gear (7). The transmission cylinder (3), the auxiliary gear (7), and the detection gear (12) are all rotatably mounted on one side of the support plate (13).

2. The shaft testing device for a three-phase asynchronous motor according to claim 1, characterized in that: A plurality of support holes (14) are provided through the support plate (13), and a rotating ring (11) is provided through the middle of the support hole (14).

3. The shaft testing device for a three-phase asynchronous motor according to claim 2, characterized in that: A plug-in block (9) is installed at one end of the rotating ring (11), and the plug-in block (9) is plugged with a plug-in slot (8), and the plug-in slot (8) is opened in the middle of the auxiliary gear (7).

4. The shaft testing device for a three-phase asynchronous motor according to claim 3, characterized in that: The rotating ring (11) is plugged with a positioning ring (10), and the positioning ring (10) is located on one side of the plug-in block (9). The positioning ring (10) and the plug-in block (9) are both provided with fastening grooves for fastening support.

5. The shaft testing device for a three-phase asynchronous motor according to claim 3, characterized in that: The auxiliary gear (7) and the detection gear (12) are connected in the same manner in the middle, and the detection gear (12) is plugged into the plug-in block (9) through the plug-in slot (8).

6. The shaft testing device for a three-phase asynchronous motor according to claim 2, characterized in that: A rotating rod (6) is installed on the side of the transmission cylinder (3) away from the rotating shaft (2), and the transmission cylinder (3) is rotatably connected to the support hole (14) via the rotating rod (6).

7. The shaft testing device for a three-phase asynchronous motor according to claim 1, characterized in that: A support frame (15) is provided at the lower end of the three-phase asynchronous motor (1), and the support frame (15) is used for height adjustment and fastening support.

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