Motor play detection device

Abstract

The utility model discloses a motor play detection device which comprises a bottom plate, an electric cylinder support is installed on the upper surface of the bottom plate, the upper end of the electric cylinder support is connected with an electric cylinder, one end of the electric cylinder is connected with a pressure sensor, and a driving motor is installed on the upper surface of the bottom plate. The utility model mainly aims at the problem that the displacement of the existing motor is difficult to detect, not only can the axial displacement be detected, but also the displacement of the side surface of the shaft end can be detected, namely the circular run-out, the electric cylinder and the pressure sensor are combined for detection, the electric cylinder can be used for detecting the displacement after the displacement, and the pressure sensor can be used for detecting the displacement after the displacement. The pressure sensor can be used for judging whether the shaft end of the motor shifts or not when the displacement amount can not be detected by the electric cylinder when the displacement amount is detected to be small, but the displacement amount needs to be judged according to the pressure of the pressure sensor, and the two modes are combined to accurately detect the displacement amount regardless of the magnitude. And the quality of each motor is reflected.

Description

Technical Field

[0001] The utility model relates to the field of motor detection, in particular to a motor sway detection device. Background Art

[0002] Motor sway is one of the common faults of the motor output shaft. Motor sway can be caused by the following reasons: rotor imbalance, improper fit between the motor shaft and the bearing, and bearing damage. These problems are one of the main causes of sway, so it is necessary to carry out necessary inspections before leaving the factory;

[0003] The inspection direction mainly focuses on the axial movement and lateral movement of the motor. The movement detection equipment currently on the market is relatively expensive and can only detect in one direction, and cannot detect both lateral and axial directions.

[0004] To this end, we propose a motor movement detection device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a motor movement detection device to solve the problems raised in the above-mentioned background technology. The technical solution of the utility model aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A motor movement detection device comprises a base plate, an electric cylinder bracket is installed on the upper surface of the base plate, an electric cylinder is connected to the upper end of the electric cylinder bracket, a pressure sensor is connected to one end of the electric cylinder, and a driving motor is installed on the upper surface of the base plate.

[0008] In a further embodiment, the output end of the driving motor is connected with a coupling bolt, and the coupling bolt and the pressure sensor are close to and fit each other.

[0009] In a further embodiment, the output shaft of the drive motor and the telescopic end of the electric cylinder may be located on the same straight line or perpendicular to each other.

[0010] In a further embodiment, the pressure sensor is mounted on the telescopic end of the electric cylinder.

[0011] In a further embodiment, the other end of the electric cylinder is connected to an encoder.

[0012] In a further embodiment, a motor bracket is also installed on the upper surface of the base plate, and the top of the motor bracket is connected to the driving motor.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model mainly aims at the problem that the existing motor movement is difficult to detect. It can not only detect axial movement, but also detect the movement of the side of the shaft end, which can be said to be circular runout. In terms of detection, an electric cylinder and a pressure sensor are combined for detection. The electric cylinder can be used to detect the displacement after the movement, while the pressure sensor can be used to detect when the movement is small. When the electric cylinder cannot detect the displacement, it is used to determine whether there is a movement problem at the shaft end of the motor. However, the movement amount needs to be determined according to the pressure of the pressure sensor. The combination of the two methods can accurately detect the movement amount of any size, which is used to reflect the quality of each motor. Secondly, the detection device of this scheme is simple, stable, reliable and moderately priced, which realizes the motor to quickly, stably and reliably detect the axial movement amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the motor movement detection device.

[0016] Figure 2 It is a schematic diagram of the structure of the motor movement detection device from a side view.

[0017] Figure 3 It is a structural schematic diagram of lateral movement detection in a motor movement detection device.

[0018] In the figure: 1. Base plate; 2. Electric cylinder bracket; 3. Electric cylinder; 4. Encoder; 5. Pressure sensor; 6. Motor bracket; 7. Coupling bolt; 8. Driving motor. DETAILED DESCRIPTION

[0019] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0022] See also Figure 1-3 In the embodiment of the utility model, a motor movement detection device includes a base plate 1, an electric cylinder bracket 2 is installed on the upper surface of the base plate 1, an electric cylinder 3 is connected to the upper end of the electric cylinder bracket 2, and a pressure sensor 5 is connected to one end of the electric cylinder 3. A driving motor 8 is installed on the upper surface of the base plate 1, and a coupling bolt 7 is connected to the output end of the driving motor 8. The coupling bolt 7 and the pressure sensor 5 are close to and fit each other. The coupling bolt 7 is a contact medium of the motor shaft end. On the one hand, it can extend the shaft end of the driving motor, and can also reduce the output shaft from directly acting on the pressure sensor 5, causing inevitable damage to the motor shaft end.

[0023] The output shaft of the drive motor 8 and the telescopic end of the electric cylinder 3 can be located on the same straight line or perpendicular to each other. When the output shaft of the drive motor 8 and the electric cylinder 3 are located on the same straight line, the axial movement of the drive motor 8 during rotation can be measured. When the two are perpendicular to each other, the lateral movement of the shaft end of the drive motor 8 can be measured, which can also be understood as a circular runout problem.

[0024] A motor bracket 6 is also installed on the upper surface of the base plate 1. The top of the motor bracket 6 is connected to the drive motor 8. The motor bracket 6 can raise the drive motor 8 as a whole. The bottom of the electric cylinder 3 also has an electric cylinder bracket 2. The telescopic end of the electric cylinder 3 and the axial end of the drive motor 8 can be kept in the same straight line through height adjustment. Example 2

[0025] See also Figure 1-3, which is different from Example 1 in that: the pressure sensor 5 is installed at the telescopic end of the electric cylinder 3, and the pressure sensor 5 can more accurately detect a very small offset. Even if the encoder 4 does not have a displacement, it can be determined by the size of the pressure whether a displacement will occur.

[0026] The other end of the electric cylinder 3 is connected to an encoder 4, which has a calculation function. When the electric cylinder 6 produces a certain displacement, the displacement amount can be obtained, that is, the axial movement amount of the motor can be detected.

[0027] The working principle of the utility model is:

[0028] Both methods measure the motor's runout. One is to detect whether the motor will have axial runout when it is driven, and the other is to detect whether the motor will have lateral runout when it is rotating, which is circular runout.

[0029] When the drive motor 8 moves axially, the coupling bolt 7 at the output shaft end of the drive motor 8 needs to keep a close fit with the pressure sensor 5, but it is necessary to avoid extrusion. After the contact is completed, the pressure sensor 5 and the encoder 4 need to be recalibrated to zero, and finally the drive motor 8 is turned on. During the rotation of the motor, the pressure sensor 5 and the encoder 4 of the electric cylinder 3 are synchronously monitored to detect whether there is a pressure value when the motor rotates. Secondly, check whether the encoder 4 has a driving effect on the electric cylinder 3 and how much the driving effect is. The driving effect can be equal to the displacement during the movement.

[0030] Similarly, when detecting the circular runout of the side, the same method can also be used to keep the coupling bolt 7 and the pressure sensor 5 in a fitting relationship, keep the pressure sensor 5 and the encoder 4 in a zero state after contact, and then measure whether there is displacement during rotation and detect the size of the displacement.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A motor movement detection device, characterized in that: It comprises a base plate (1), an electric cylinder bracket (2) being mounted on the upper surface of the base plate (1), an electric cylinder (3) being connected to the upper end of the electric cylinder bracket (2), a pressure sensor (5) being connected to one end of the electric cylinder (3), and a drive motor (8) being mounted on the upper surface of the base plate (1).

2. A motor movement detection device according to claim 1, characterized in that: The output end of the driving motor (8) is connected to a coupling bolt (7), and the coupling bolt (7) and the pressure sensor (5) are close to and in close contact with each other.

3. A motor movement detection device according to claim 1, characterized in that: The output shaft of the drive motor (8) and the telescopic end of the electric cylinder (3) may be located on the same straight line or may be perpendicular to each other.

4. A motor movement detection device according to claim 1, characterized in that: The pressure sensor (5) is installed at the telescopic end of the electric cylinder (3).

5. The motor movement detection device according to claim 1, characterized in that: The other end of the electric cylinder (3) is connected to an encoder (4).

6. A motor movement detection device according to claim 1, characterized in that: A motor bracket (6) is also mounted on the upper surface of the base plate (1), and the top of the motor bracket (6) is connected to a drive motor (8).

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