Motor fault detection system and vibration detection equipment and mobile device thereof

Abstract

The invention relates to vibration detection equipment which comprises a moving device and a vibration sensor arranged at the top of the moving device. The moving device comprises a first displacement mechanism; the first moving mechanism comprises a moving frame, a first motor and a displacement top plate; the movable frame comprises a driving rod, a driven rod, a connecting rod and a linkage rod; the first end of the driving rod is hinged to a fixed face, and the second end of the driving rod is driven by the first motor to rotate in the first direction. The first end of the driven rod is hinged to the fixing face, the second end of the driven rod is hinged to the second end of the driving rod through the connecting rod, and the driven rod is driven by the driving rod to rotate in the first direction. The first end of the linkage rod is hinged to the middle of the driven rod. The displacement top plate is hinged to the second end of the linkage rod and the middle of the connecting rod and is driven by the linkage rod and the connecting rod to move in the first direction. The vibration detection equipment has the advantages of being small in size and high in applicability.

Description

Technical Field

[0001] The invention relates to the field of vibration detection, and in particular to a motor fault detection system and a vibration detection device and a mobile device thereof. Background Art

[0002] Motor inspection is the inspection of specified parts of motor equipment by inspectors according to certain standards and at certain intervals to ensure safe and stable operation of the equipment and prevent unnecessary losses caused by over-maintenance or under-maintenance of the motor. At present, the monitoring of the motor's operating status is mainly carried out by detecting the vibration generated during its operation.

[0003] In the existing motor vibration detection, the vibration sensor is often installed on a mobile device to achieve multi-point detection of the motor. At present, the mobile device mainly moves in the form of a guide rail. The vibration sensor is installed on the guide rail, and the movement of the vibration sensor is achieved through the guide rail.

[0004] See also Figure 1 , Figure 1 The structure diagram of a guide rail type mobile device. The mobile device includes a guide rail 01 and a slider 02. The guide rail 01 is fixed in length, and the slider 02 is slidably mounted on the guide rail 01. In the motor vibration detection, a vibration sensor is mounted on the slider 02, so that the vibration sensor can detect motor vibrations at different positions at different points as the slider 02 moves.

[0005] In the above-mentioned guide rail moving device, the movement range of the slider 02 depends on the length of the guide rail 01. However, the length of the guide rail 01 is fixed, and it needs to occupy a large amount of space in the movement direction of the slider 02; and as the distribution range of the points to be detected expands, the larger the movement range required by the moving slider 02, the longer the guide rail 01 is, and the space it needs to occupy increases. Since the actual motor operation site is often complex and the space resources are limited, it is impossible to meet the demand for the guide rail 01 to occupy a larger space, which limits the application of equipment for automatic multi-point detection of motors. At the same time, since the square guide rail is large in size and heavy in weight, in order to maintain the stability of the entire mobile device, it is also necessary to reinforce and stabilize its base, which further increases the cost. Summary of the invention

[0006] Based on this, an object of the present invention is to provide a motor fault detection system and a vibration detection device and a mobile device thereof.

[0007] A vibration detection device, comprising a moving device and a vibration sensor arranged on the top of the moving device; the moving device comprises a first displacement mechanism; the first moving mechanism comprises a moving frame, a first motor and a displacement top plate; the moving frame comprises an active rod, a driven rod, a connecting rod and a linkage rod; the first end of the active rod is hinged on a fixed surface, and the second end rotates along a first direction under the drive of the first motor; the first end of the driven rod is hinged to the fixed surface, and the second end is hinged to the second end of the active rod through the connecting rod, and is driven by the active rod to rotate along the first direction; the first end of the linkage rod is hinged to the middle part of the driven rod; the displacement top plate is hinged to the second end of the linkage rod and the middle part of the connecting rod, and is driven by the linkage rod and the connecting rod to move along the first direction; the vibration sensor is installed on the displacement top plate.

[0008] Compared with the prior art, the vibration detection equipment has improved its moving device. The design of the active rod, the driven rod, the connecting rod and the linkage rod in the first moving mechanism reduces the space occupied in its movement direction and achieves a smaller volume. It can be used in more motor working scenarios and is more convenient for transportation and installation. At the same time, the design of the connecting rod and the linkage rod keeps the vibration sensor installed on the first moving mechanism horizontal. It also simplifies the structure of the detection equipment and reduces the weight and cost of the detection equipment.

[0009] Furthermore, a first support rod and a second support rod are provided on the lower surface of the displacement top plate; the first support rod is hinged to the middle part of the connecting rod; and the second support rod is hinged to the second end of the linkage rod.

[0010] Furthermore, the first support rod is bent at a position close to the middle of the connecting rod, and its horizontal projection is located outside the displacement top plate. By bending the support rod at this position, a larger displacement range is obtained.

[0011] Furthermore, the mobile device further comprises a second displacement mechanism, which is arranged on the displacement top plate of the first displacement mechanism; the second displacement mechanism has the same structure as the first displacement mechanism, and its displacement top plate is displaced along a second direction. By adding a set of mobile devices, more degrees of freedom of movement in more directions are obtained.

[0012] Furthermore, the moving device also includes a second displacement mechanism stacked with the first displacement mechanism; the second displacement mechanism includes a displacement base, a screw rod and a second motor; the displacement base is movably mounted on the screw rod; the second motor drives the screw rod to rotate, driving the displacement base to move on the screw rod.

[0013] Furthermore, the first displacement mechanism further includes a first photoelectric sensor, which measures the position of the displacement top plate of the first displacement mechanism; and / or the second displacement mechanism further includes a second photoelectric sensor, which measures the position of the displacement top plate or the displacement base of the second displacement mechanism. The position of the displacement mechanism is measured by the photoelectric sensor to more accurately control its movement.

[0014] Furthermore, the mobile device also includes a vertical support mechanism stacked with the first displacement mechanism and the second displacement mechanism; the vertical support mechanism includes a support bottom plate, a support top plate and a telescopic rod; the telescopic rod can adjust the length; the telescopic rod is placed vertically, and its two ends are respectively connected to the support bottom plate and the support top plate.

[0015] Furthermore, the mobile device further comprises a sensor mounting seat, the sensor mounting seat is mounted on the top of the mobile device through a buffer block, and the vibration sensor is mounted on the sensor mounting seat. The sensor mounting seat is more convenient for mounting the vibration sensor.

[0016] A moving device comprises a first displacement mechanism; the first moving mechanism comprises a moving frame, a first motor and a displacement top plate; the moving frame comprises an active rod, a driven rod, a connecting rod and a linkage rod; the first end of the active rod is hinged on a fixed surface, and the second end rotates along a first direction under the drive of the first motor; the first end of the driven rod is hinged on the fixed surface, and the second end is hinged to the second end of the active rod through the connecting rod, and is driven by the active rod to rotate along the first direction; the first end of the linkage rod is hinged on the middle part of the driven rod; the displacement top plate is hinged to the second end of the linkage rod and the middle part of the connecting rod, and is driven by the linkage rod and the connecting rod to displace along the first direction.

[0017] A motor fault detection system comprises any one of the above-mentioned vibration detection devices and a fault detection processor; the vibration detection device collects vibration data at different positions of the motor; the fault detection processor receives and analyzes the vibration data, detects the operating condition of the motor, and outputs a warning signal when a fault occurs in the motor.

[0018] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of a guide rail type moving device in the background technology;

[0020] Figure 2 It is a module diagram of the motor fault detection system of the present invention;

[0021] Figure 3The overall structure diagram of the motor fault detection system according to the first embodiment of the present invention;

[0022] Figure 4 This is a structural diagram of the first displacement mechanism of the mobile device in the first embodiment of the present invention in a reset state;

[0023] Figure 5 This is a structural diagram of the first displacement mechanism of the mobile device in the first embodiment of the present invention in a working state;

[0024] Figure 6 is a structural diagram of a second displacement mechanism of a mobile device according to a first embodiment of the present invention;

[0025] Figure 7 4 is a structural diagram of a vertical support mechanism of a mobile device according to Embodiment 1 of the present invention. DETAILED DESCRIPTION

[0026] The present invention redesigns the vibration detection equipment so that the motor fault detection system of the present invention can detect the operation status of the motor by collecting the multi-point vibration status of the motor.

[0027] See also Figure 2 , Figure 2 : is a module diagram of the motor fault detection system of the present invention. The motor fault detection system 1 comprises a vibration detection device 2 and a fault detection processor 3. The vibration detection device 2 collects and outputs vibration data of multiple monitoring points on the motor. The fault detection processor 3 receives and analyzes the vibration data to detect whether the motor has a fault.

[0028] Embodiment 1

[0029] See also Figure 3 , Figure 3 The figure is an overall structural diagram of the motor fault detection system of the first embodiment of the present invention. The vibration detection device includes a mobile device 4, and a vibration sensor 5 arranged on the top of the mobile device. The mobile device 4 includes a first displacement mechanism 10, a second displacement mechanism 20, a vertical support mechanism 30 and a displacement controller 40, wherein the first displacement mechanism 10 controls the vibration sensor 5 to move in a first direction, and the second displacement mechanism 20 controls the vibration sensor 5 to move in a second direction. The first displacement mechanism 10, the second displacement mechanism 20 and the vertical support mechanism 30 are stacked in the vertical direction. The displacement controller 40 sends a displacement control signal to the first displacement mechanism 10 and the second displacement mechanism 20, thereby controlling the position of the vibration sensor 5 in the first direction and the second direction. In this embodiment, the first direction is Figure 3 The second direction is Figure 3 Landscape orientation shown.

[0030] See also Figure 4 and 5 , Figure 4 is a structural diagram of the first displacement mechanism of the mobile device of the present invention in a reset position, Figure 5 The first displacement mechanism 10 of the mobile device of the present invention is in a working position. The first displacement mechanism 10 includes a mounting base plate 11 , a mobile frame 12 , a displacement top plate 13 and a first motor 14 .

[0031] Specifically, the first displacement mechanism 10 includes two groups of moving frames 12, namely an active moving frame and a driven moving frame. The active moving frame and the driven moving frame have the same structure and are respectively arranged on a first longitudinal plane and a second longitudinal plane (the first longitudinal plane and the second longitudinal plane are both perpendicular to Figure 3 The vertical plane of the paper) is located at Figure 3 The left and right sides of the mounting base 11 are shown; each group of the moving frames 12 includes an active rod 15, a driven rod 16, a connecting rod 17 and a linkage rod 18.

[0032] The first end of the active rod 15 is hinged to the mounting base plate 11, and the second end of the active rod 15 rotates around its first end in a longitudinal plane under the drive of the first motor 14. The first end of the driven rod 16 is hinged to the mounting base plate 11, and the second end is hinged to the second end of the active rod 15 through the connecting rod 17, and is driven by the active rod 15 to rotate around its first end. The first end of the connecting rod 17 is hinged to the second end of the active rod 15, and the second end of the connecting rod 17 is hinged to the other end of the driven rod 16; the active rod 15 drives the connecting rod 17 to move, and then drives the driven rod 16 to rotate in the longitudinal plane. The first end of the linkage rod 18 is hinged to the middle part of the driven rod 16, and the angle between it and the driven rod 16 changes as the driven rod 16 rotates.

[0033] The upper surface of the displacement top plate 13 is provided with a sensor mounting seat; the lower surface of the displacement top plate 13 is provided with four vertical support rods 19, namely the first support rod (19a), the second support rod (19b), the third support rod (19c) and the fourth support rod (19d). The first support rod (19a) is hinged to the middle part of the connecting rod 17 of the active moving frame; the second support rod (19b) is hinged to the second end of the linkage rod 18 of the active moving frame; the third support rod (19c) is hinged to the middle part of the connecting rod 17 of the driven moving frame; the fourth support rod (19d) is hinged to the second end of the linkage rod 18 of the driven moving frame. Among them, the first support rod (19a) and the third support rod (19c) are bent outward along the longitudinal direction near the end of the connecting rod, and their horizontal projections are located outside the displacement top plate 13. When the first moving mechanism is located at the reset position, the horizontal projection of the displacement top plate 13 is on the installation base plate 10 ; when located at the working position, part or all of the horizontal projection of the displacement top plate 13 leaves the installation base plate 10 .

[0034] Specifically, see Figure 6 , Figure 6 The structural diagram of the second displacement mechanism of the mobile device of the present invention. The second displacement mechanism 20 includes a displacement base 21, a slide bar 22, a screw rod 23 and a second motor 24. The slide bar 22 and the screw rod 23 are mounted on a bracket. The displacement base 21 is slidably mounted on the slide bar 22 and the screw rod 23, and cooperates with the screw rod 23 through a ball bearing. The second motor 24 drives the screw rod 23 to rotate, thereby driving the displacement base 21 to move on the slide bar 22 and the screw rod 23. The reset position of the second displacement mechanism 20 is the position when the displacement base 21 is located on one side of the second motor 24.

[0035] See also Figure 7 , Figure 7 The vertical support mechanism of the mobile device of the present invention is shown in FIG. The vertical support mechanism 30 includes a support base plate 31, a telescopic rod 32 and a support top plate 33. The support base plate 31 is a square plate structure, which is fixed to the displacement base 21 of the second displacement mechanism 30. The telescopic rod 32 is vertically mounted on the upper surface of the support base plate and can be adjusted in height. The support top plate 33 is a square plate structure, and its lower surface is fixedly connected to the top of the telescopic rod 32.

[0036] Furthermore, the telescopic rod 32 includes an outer rod 34, an inner rod 35 and a knob lock 36. The inner rod 35 is installed in the outer rod 34 and can slide up and down. The knob lock 36 is installed at the connection between the inner rod 35 and the outer rod 34 to lock the positions of the two and fix the height of the telescopic rod.

[0037] Furthermore, the mobile device also includes a battery, which is wrapped in a battery box and installed in the second displacement mechanism 20 to provide power for the mobile device 4 .

[0038] The detection end of the vibration sensor 5 is provided with a magnetic head, which is mounted on the sensor mounting mechanism of the first displacement mechanism 20 .

[0039] Specifically, the second displacement mechanism 20 is located at the bottom; the support bottom plate 31 of the vertical support mechanism 30 is installed on the displacement base 21 of the second displacement mechanism 20; the mounting bottom plate 11 of the first displacement mechanism 10 is installed on the upper surface of the support top plate 33 of the vertical support mechanism 20. In the motor fault detection system, the vibration sensor 5 collects and outputs vibration data, and the fault detection processor 2 receives and analyzes the vibration data from the vibration sensor 5 in the vibration detection device 1.

[0040] Furthermore, the displacement controller 40 and the fault detection processor 4 are integrated into a main control chip. The main control chip is installed in a controller box, and the controller box is located on the second displacement mechanism 20.

[0041] Before use, adjust the height of the support top plate 33 of the vertical support mechanism 30 and the position of the vibration sensor 5 in the first direction and the second direction, and record the position of each motor vibration monitoring point at the same height in the displacement controller 40. Specifically, the displacement controller 40 records the number of electric pulse signals output to the second motor 24 and the first motor 14 when the vibration sensor 5 moves to the working position of each motor monitoring point, respectively, as the longitudinal working position and the lateral working position, and the output number of the electric pulse signal reflects the spatial coordinates of the working position.

[0042] When in use, the displacement controller 40 detects the rotation angle of the first motor 14 and the second motor 24 according to the number of electrical pulse signals outputted previously, and determines whether the displacement top plate 13 of the first displacement mechanism 10 and the displacement base 21 of the second displacement mechanism 20 are in the reset position.

[0043] When it is not in the reset position, it needs to be reset first. The displacement controller 40 sends a certain number of electric pulse signals to the first motor 14 and the second motor 24, the first motor 14 drives the active rod 15 to rotate in the opposite direction, the active rod 15 drives the driven rod 17 to rotate through the connecting rod 16, the angle between the linkage rod 18 and the driven rod 17 increases, driving the displacement top plate 13 and the vibration sensor 5 located thereon to move along the longitudinal direction to reach the reset position; in the first displacement mechanism 10, the second motor 24 drives the screw rod 23 to rotate in the opposite direction, driving the displacement base 21 to move along the transverse direction to reach the reset position, and the reset is completed.

[0044] Subsequently, the displacement controller 40 outputs a corresponding number of electric pulse signals to the first motor 14 and the second motor 24 according to the pre-stored working position of the first monitoring point. The second motor 24 drives the screw rod 23 to rotate forward, and the displacement base 21 moves horizontally following the rotation of the screw rod 23. The displacement base 21 and the vertical support mechanism 30 thereon and the first displacement mechanism 10 move away from the reset position and reach the horizontal working position of the first monitoring point. The first motor 14 accurately drives the active rod 15 to rotate forward by a certain angle according to the received electric pulse signal, and the active rod 15 drives the connecting rod 17 and then drives the driven rod 16 to rotate by a certain angle, and the angle between the linkage rod 18 and the driven rod 16 decreases, driving the displacement top plate 13 to move longitudinally, and the vibration sensor 5 thereon reaches the longitudinal working position of the first monitoring point; and the displacement top plate is kept horizontal. When the displacement base 21 of the second displacement mechanism 20 and the displacement top plate 13 of the first displacement mechanism 10 reach the specified position, the magnetic head of the detection end of the vibration sensor 5 is adsorbed on the specified position of the motor housing to detect the vibration of the motor at the first monitoring point.

[0045] Subsequently, the displacement controller 40 controls the vibration sensor 5 to move to the second monitoring point to detect the vibration of the motor through the mobile device 4 according to a preset time period. At this time, the mobile device 1 needs to be reset first. The displacement controller 40 outputs the corresponding electrical pulse signal to the first motor 14 and the second motor 24 again, so that the first displacement mechanism 10 and the second displacement mechanism 20 move to the reset position until they reach the reset position. The displacement controller 40 outputs a corresponding number of electrical pulse signals to the first motor 14 and the second motor 24 according to the position of the second monitoring point, and the first displacement mechanism 10 and the second displacement mechanism 20 move to the working position of the second monitoring point, so that the vibration sensor 5 reaches the second monitoring point and detects the vibration of the motor at the second monitoring point.

[0046] For the third and subsequent monitoring points, the displacement controller 40 repeats the above steps of resetting and moving to the corresponding working position, and moves the vibration sensor 5 to the corresponding monitoring point to perform vibration detection on the motor. At the same time, the displacement controller 40 controls the first motor 14 and the second motor 24, and moves the vibration sensor 5 to each monitoring point in turn for cyclic detection of vibration conditions.

[0047] In the process of acquiring vibration data at each detection point, the vibration sensor 5 transmits the motor vibration data collected according to the sampling frequency and sampling time length set by the system to the fault detection processor 2. The fault detection processor 2 detects the received vibration data, and when the vibration value detected exceeds the set threshold, it indicates that the motor operation is abnormal, an alarm is issued to notify the staff, and multiple groups of vibration data are saved at the same time, and the vibration sensor is turned off.

[0048] In one embodiment, the first displacement mechanism 10 further includes a first photoelectric sensor, and the second displacement mechanism 20 further includes a second photoelectric sensor. The first photoelectric sensor detects whether the displacement top plate 13 of the first displacement mechanism 10 is located at the reset position; the second photoelectric sensor detects whether the displacement base 21 of the second displacement mechanism 20 is located at the reset position. When the first photoelectric sensor detects that the displacement top plate 13 has not reached the reset position during the reset process, and / or the second photoelectric sensor detects that the displacement base 21 has not reached the reset position during the reset process, the first photoelectric sensor and / or the second photoelectric sensor sends a signal to the displacement controller 40, and the displacement controller 40 continues to output an electrical pulse signal to the transverse stepping motor 14 and / or the longitudinal stepping motor 24 to continue the reset process. When the first photoelectric sensor detects that the displacement top plate 13, and the second photoelectric sensor detects that the displacement base 21 has reached the reset position, the displacement controller 40 stops outputting the electrical pulse signal, and the reset ends.

[0049] Embodiment 2

[0050] The motor fault detection system of the second embodiment is basically the same as that of the first embodiment, and the only difference is that the structure and movement mode of the second displacement mechanism 20 are the same as those of the first displacement mechanism 10, and the second displacement mechanism 20 is arranged on the displacement top plate of the first displacement mechanism, and the displacement top plate of the second displacement mechanism 20 is displaced along the second direction; at this time, the sensor mounting seat is located on the displacement top plate of the second displacement mechanism 20. The active rod of the second displacement mechanism 20 is driven by its first motor to rotate in the transverse plane, and drives its connecting rod and driven rod to rotate in the transverse plane, so that the displacement top plate of the second displacement mechanism 20 moves in the transverse direction.

[0051] In this embodiment, the supporting bottom plate of the vertical supporting mechanism 30 is installed on the ground, the second displacement mechanism 20 is installed on the supporting top plate of the vertical supporting mechanism 30 , and the first displacement mechanism 10 is installed on the displacement top plate of the second displacement mechanism 20 .

[0052] Compared with the prior art, the vibration detection device has improved its moving device. The design of the active rod, the driven rod, the connecting rod and the linkage rod in the first moving mechanism reduces the space occupied in the direction of movement, and also achieves a smaller volume, which can be used in more motor working scenarios; at the same time, the design of the connecting rod and the linkage rod keeps the vibration sensor installed on the first moving mechanism horizontal; it also simplifies the structure of the detection equipment and reduces the weight and cost of the detection equipment. In addition, by controlling the moving device through the displacement controller, it can automatically cycle detection between multiple monitoring points, collect data in time, and improve the collection efficiency of data detection. At the same time, the fault detection processor is used to analyze the collected vibration data to detect whether the motor is operating normally in real time.

[0053] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that, unless otherwise specified, "multiple" refers to two or more; the terms "first", "second", "third", etc. are only used to distinguish, rather than to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. The term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items. When the above description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of the present application, for those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0054] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and the present invention is intended to include these modifications and modifications.

Claims

1. A vibration detection device, characterized in that: It includes a moving device and a vibration sensor arranged on the top of the moving device; the moving device includes a first displacement mechanism; the first moving mechanism includes a moving frame, a first motor and a displacement top plate; the moving frame includes an active rod, a driven rod, a connecting rod and a linkage rod; the first end of the active rod is hinged on a fixed surface, and the second end rotates along the first direction under the drive of the first motor; the first end of the driven rod is hinged to the fixed surface, and the second end is hinged to the second end of the active rod through the connecting rod, and is driven by the active rod to rotate along the first direction; the first end of the linkage rod is hinged to the middle part of the driven rod; the displacement top plate is hinged to the second end of the linkage rod and the middle part of the connecting rod, and is driven by the linkage rod and the connecting rod to move along the first direction.

2. A vibration detection device according to claim 1, characterized in that: A first support rod and a second support rod are provided on the lower surface of the displacement top plate; the first support rod is hinged to the middle part of the connecting rod; and the second support rod is hinged to the other second end of the linkage rod.

3. A vibration detection device according to claim 2, characterized in that: The first support rod is bent at a position close to the middle of the connecting rod, and a horizontal projection of the first support rod is located outside the displacement top plate.

4. A vibration detection device according to claim 3, characterized in that: The moving device further comprises a second displacement mechanism, which is arranged on the displacement top plate of the first displacement mechanism; the second displacement mechanism has the same structure as the first displacement mechanism, and its displacement top plate is displaced along a second direction.

5. A vibration detection device according to claim 3, characterized in that: The moving device also includes a second displacement mechanism stacked with the first displacement mechanism; the second displacement mechanism includes a displacement base, a screw rod and a second motor; the displacement base is movably mounted on the screw rod; the second motor drives the screw rod to rotate, driving the displacement base to move on the screw rod.

6. A vibration detection device according to any one of claims 4 or 5, characterized in that: The first displacement mechanism further includes a first photoelectric sensor, which measures the position of the displacement top plate of the first displacement mechanism; and / or the second displacement mechanism further includes a second photoelectric sensor, which measures the position of the displacement top plate or the displacement base of the second displacement mechanism.

7. A vibration detection device according to claim 6, characterized in that: The mobile device also includes a vertical support mechanism stacked with the first displacement mechanism and the second displacement mechanism; the vertical support mechanism includes a support bottom plate, a support top plate and a telescopic rod; the telescopic rod can adjust the length; The telescopic rod is placed vertically, and its two ends are respectively connected to the supporting bottom plate and the supporting top plate.

8. A vibration detection device according to claim 7, characterized in that: The mobile device further comprises a sensor mounting seat; the sensor mounting seat is mounted on the top of the mobile device through a buffer block; and the vibration sensor is mounted on the sensor mounting seat.

9. A mobile device, characterized in that: It includes a first displacement mechanism; the first moving mechanism includes a moving frame, a first motor and a displacement top plate; the moving frame includes an active rod, a driven rod, a connecting rod and a linkage rod; the first end of the active rod is hinged on a fixed surface, and the second end rotates along the first direction under the drive of the first motor; the first end of the driven rod is hinged to the fixed surface, and the second end is hinged to the second end of the active rod through the connecting rod, and is driven by the active rod to rotate along the first direction; the first end of the linkage rod is hinged to the middle part of the driven rod; the displacement top plate is hinged to the second end of the linkage rod and the middle part of the connecting rod, and is driven by the linkage rod and the connecting rod to displace along the first direction.

10. A motor fault detection system, characterized in that: The invention comprises a vibration detection device as claimed in any one of claims 1 to 8, and a fault detection processor; the vibration detection device collects vibration data at different positions of the motor; The fault detection processor receives and analyzes the vibration data, detects the operation of the motor, and outputs a warning signal when a fault occurs in the motor.

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