Motor load measurement test bench

Abstract

The utility model relates to the technical field of motor testing, and discloses a motor load measurement test bench, which comprises a main frame, a first positioning seat and a second positioning seat, the first positioning seat is fixedly arranged on the main frame, the second positioning seat is arranged on the main frame in a lifting adjustable manner, and the first positioning seat and the second positioning seat are oppositely arranged; the first positioning seat is provided with a first mounting part for fixing the direct-current motor, the second positioning seat is provided with a second mounting part for fixing the dynamometer, and a detachably connected coupler is arranged between the direct-current motor and the dynamometer; a control box is further installed on the main machine frame and provided with a first circuit, the first circuit is used for being connected with a direct-current power source and electrically connected with the direct-current motor, a voltmeter and an ampere meter are installed on the first circuit, the voltmeter is connected with the direct-current motor in parallel, and the ampere meter is connected with the direct-current motor in series. Therefore, the measurement test of the load capacity of the direct-current motor in the rated power range is realized, and the normal work after the boarding installation is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of motor testing, in particular to a motor load determination test bench. Background Art

[0002] At present, the electric motor is a common driving mechanism. Especially, the load of the DC motor on the ship is large. During ship maintenance operations, it is often necessary to disassemble and repair the damaged DC motor for various reasons.

[0003] In the inner field of the workshop, after the disassembly and repair of the DC motor are completed, usually only a simple no-load running test is carried out on the motor. However, normal no-load running does not equal the running condition under the actual load condition. Therefore, the existing maintenance technology cannot detect the running condition of the motor under the load condition, and it is difficult to ensure the normal operation after installation on the boat. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that the existing maintenance technology cannot detect the running condition of the motor under the load condition, and it is difficult to ensure the normal operation after installation on the boat.

[0005] To solve the above technical problem, the utility model provides a technical solution of a motor load determination test bench:

[0006] The motor load determination test bench includes a main frame, a first positioning seat and a second positioning seat. The first positioning seat is fixedly arranged on the upper part of the main frame. The second positioning seat is arranged on the upper part of the main frame in a liftable and adjustable manner. The first positioning seat and the second positioning seat are arranged oppositely on both sides of the main frame.

[0007] The first positioning seat is provided with a first mounting part for fixing the DC motor. The second positioning seat is provided with a second mounting part for fixing the dynamometer. And a detachable coupling is arranged between the DC motor and the dynamometer.

[0008] A control box, a voltmeter and an ammeter are also installed on the main frame. The control box is provided with a first circuit. The first circuit is used to connect to a DC power supply and is electrically connected to the DC motor. The voltmeter and the ammeter are respectively installed on the first circuit. And the voltmeter is arranged in parallel with the DC motor, and the ammeter is arranged in series with the DC motor.

[0009] Further, a load protector is also installed in the first circuit. The load protector is arranged in parallel with the DC motor.

[0010] Further, the control box is also provided with a second circuit for electrically connecting to the dynamometer. A power regulation controller is installed on the second circuit. And the power regulation controller is arranged in parallel with the dynamometer.

[0011] Furthermore, a lifting drive mechanism and a guide rod are provided between the main frame and the second positioning seat. The guide rod is vertically slidably installed on the outside of the main frame, and the upper end of the guide rod is fixedly connected to the second positioning seat.

[0012] Furthermore, the lifting drive mechanism includes a driving motor, a screw and a turbine box, the driving motor and the turbine box are both installed on the main frame, the screw is rotatably installed on the lower side of the second positioning seat, and the turbine box is transmission-connected between the driving motor and the screw.

[0013] Furthermore, a limit block is fixedly installed on the outer side of the main frame, the guide rod is slidably matched with the limit block, and a fastening bolt is also provided on the limit block, and the fastening bolt is pressed and matched with the guide rod.

[0014] Further, the first positioning seat comprises a first seat plate, two first slide rails and a plurality of first supports, the two first slide rails are laterally adjustable and mounted on the first seat plate, and the two first slide rails are arranged in parallel and spaced apart;

[0015] The plurality of first supports are respectively mounted on the two first slide rails, and the first supports are longitudinally adjustable along the extension direction of the first slide rails. The plurality of first supports constitute the first mounting portion for fixing the DC motor.

[0016] Furthermore, the second positioning seat comprises a second seat plate, two second slide rails and a plurality of second supports, the two second slide rails are laterally adjustable and mounted on the second seat plate, and the two second slide rails are arranged in parallel and spaced apart;

[0017] A plurality of the second supports are respectively mounted on the two second slide rails, and the second supports are longitudinally adjustable along the extension direction of the second slide rail. The plurality of the second supports constitute the second mounting portion for fixing the dynamometer.

[0018] Compared with the prior art, a beneficial effect of a motor load measurement test bench of the present utility model lies in that: the motor load measurement test bench adopts a design form of a main frame, a first positioning seat, a second positioning seat, a control box, a voltmeter and an ammeter. The first positioning seat is fixedly arranged on the upper part of the main frame, the second positioning seat is arranged on the upper part of the main frame in a lift-adjustable manner, and the first positioning seat and the second positioning seat are arranged oppositely on both sides of the main frame. A DC motor is fixedly installed on a first installation part of the first positioning seat, a dynamometer is fixedly installed on a second installation part of the second positioning seat, the height of the second positioning seat and the dynamometer can be adjusted up and down, so that the dynamometer and the DC motor are on the same axis, and then a coupling is used to make a non-rotating connection between the DC motor and the dynamometer, ensuring that the power output by the DC motor is effectively transmitted to the dynamometer, thereby being able to accurately detect the load operation condition of the DC motor.

[0019] Among them, a control box, a voltmeter and an ammeter are further installed on the main frame. The control box is provided with a first circuit, and the first circuit of the control box is electrically connected to a DC power supply and the DC motor respectively, and the DC power supply is used to supply DC power to the DC motor; moreover, the voltmeter and the ammeter are respectively installed on the first circuit, and the voltmeter is arranged in parallel with the DC motor, and the ammeter is arranged in series with the DC motor. By using the voltmeter and the ammeter to detect the working voltage and working current of the DC motor in real time, the load operation parameters of the DC motor can be accurately obtained.

[0020] The working process of the present utility model is as follows: first, use the control box to start the DC motor to run under no-load conditions, check the temperature rise of the motor bearings, the friction of the carbon brushes and whether there are abnormal noises during operation. After confirming that the no-load operation condition is stable and reliable; then gradually increase the power of the DC motor through the dynamometer according to technical requirements, realizing the measurement test of the load-bearing capacity of the DC motor within the rated power range. During the test, the working voltage and current of the DC motor can be directly read and confirmed through the voltmeter and ammeter of the control box, ensuring the normal operation of the motor after it is installed on the boat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a front view schematic diagram of the motor load measurement test bench in an embodiment of the present utility model;

[0022] Figure 2 is a schematic diagram of the principle of the first circuit and the second circuit of the control box in an embodiment of the present utility model;

[0023] Figure 3 is a side view schematic diagram of the motor load measurement test bench in an embodiment of the present utility model;

[0024] Figure 4 is a top view schematic diagram of the motor load measurement test bench in an embodiment of the present utility model;

[0025] In the figure: 1 - main frame, 10 - control box, 11 - voltmeter, 12 - ammeter, 13 - first circuit, 14 - second circuit, 15 - load protector, 16 - power regulation controller, 17 - accessory box, 18 - toolbox, 2 - first positioning seat, 20 - first installation part, 21 - first seat plate, 22 - first slide rail, 23 - first support, 3 - second positioning seat, 30 - second installation part, 31 - second seat plate, 32 - second slide rail, 33 - second support, 4 - DC motor, 40 - coupling, 5 - dynamometer, 6 - lifting drive mechanism, 60 - guide rod, 61 - drive motor, 62 - screw rod, 63 - turbine box, 64 - limit block, 65 - fastening bolt. Detailed implementation manners

[0026] The following combines the accompanying drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. in the present utility model is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 should not be construed as a limitation of the present utility model.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0029] In the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Such as Figures 1 to 4As shown in the figure, a motor load measurement test bench according to an embodiment of the present utility model includes a main frame 1, a first positioning seat 2, and a second positioning seat 3. The first positioning seat 2 is fixedly arranged on the upper part of the main frame 1, and the second positioning seat 3 is arranged on the upper part of the main frame 1 in a liftable and adjustable manner. The first positioning seat 2 and the second positioning seat 3 are oppositely arranged on both sides of the main frame 1. A first installation part 20 for fixing a DC motor 4 is provided on the first positioning seat 2, and a second installation part 30 for fixing a dynamometer 5 is provided on the second positioning seat 3. A detachable coupling 40 is provided between the DC motor 4 and the dynamometer 5.

[0031] A control box 10, a voltmeter 11, and an ammeter 12 are further installed on the main frame 1. The control box 10 is provided with a first circuit 13. The first circuit 13 is used to connect to a DC power supply and is electrically connected to the DC motor 4. The voltmeter 11 and the ammeter 12 are respectively installed on the first circuit 13, and the voltmeter 11 is arranged in parallel with the DC motor 4, and the ammeter 12 is arranged in series with the DC motor 4.

[0032] The motor load measurement test bench adopts the design form of the main frame 1, the first positioning seat 2, the second positioning seat 3, the control box 10, the voltmeter 11, and the ammeter 12. The first positioning seat 2 is fixedly arranged on the upper part of the main frame 1, and the second positioning seat 3 is arranged on the upper part of the main frame 1 in a liftable and adjustable manner. The first positioning seat 2 and the second positioning seat 3 are oppositely arranged on both sides of the main frame 1. The DC motor 4 is fixedly installed on the first installation part 20 of the first positioning seat 2, and the dynamometer 5 is fixedly installed on the second installation part 30 of the second positioning seat 3. The height of the second positioning seat 3 and the dynamometer 5 can be adjusted by lifting, so that the dynamometer 5 and the DC motor 4 are on the same axis. Then, the DC motor 4 and the dynamometer 5 are connected by the coupling 40 to prevent rotation, ensuring that the power output by the DC motor 4 is effectively transmitted to the dynamometer 5, so that the load operation condition of the DC motor 4 can be accurately detected.

[0033] Among them, a control box 10, a voltmeter 11, and an ammeter 12 are further installed on the main frame 1. The control box 10 is provided with a first circuit 13. The first circuit 13 of the control box 10 is electrically connected to the DC power supply and the DC motor 4 respectively, and the DC power supply is used to supply DC power to the DC motor 4. Moreover, the voltmeter 11 and the ammeter 12 are respectively installed on the first circuit 13, and the voltmeter 11 is arranged in parallel with the DC motor 4, and the ammeter 12 is arranged in series with the DC motor 4. By using the voltmeter 11 and the ammeter 12 to detect the working voltage and working current of the DC motor 4 in real time, the load operation parameters of the DC motor 4 can be accurately obtained.

[0034] The working process of the utility model is: first use the control box 10 to start the DC motor 4 to run in a no-load state, check the motor bearing temperature rise, carbon brush friction and whether there is any abnormal noise during operation, and confirm that the no-load operation condition is stable and reliable; then use the dynamometer 5 to gradually increase the power of the DC motor 4 according to technical requirements, and realize the measurement test of the load capacity of the DC motor 4 within the rated power range. During the test, the working voltage and current of the DC motor 4 can be directly confirmed by the voltmeter 11 and the ammeter 12 of the control box 10, thereby ensuring the normal operation of the motor after installation on the boat.

[0035] In this embodiment, a load protector 15 is also installed in the first circuit 13, and the load protector 15 is arranged in parallel with the DC motor 4. The load protector 15 plays an overcurrent protection role for the DC motor 4, preventing the DC motor 4 from being damaged due to excessive load current. In addition, the control box 10 is also provided with a second circuit 14 for being electrically connected to the dynamometer 5, and a power regulating controller 16 is installed on the second circuit 14, and the power regulating controller 16 is arranged in parallel with the dynamometer 5, and the load power applied to the DC motor 4 by the dynamometer 5 can be adjusted by the power regulating controller 16.

[0036] As a further preferred solution, a lifting drive mechanism 6 and a guide rod 60 are further provided between the main frame 1 and the second positioning seat 3. The guide rod 60 is vertically slidably mounted on the outer side of the main frame 1, and the upper end of the guide rod 60 is fixedly connected to the second positioning seat 3. The lifting drive mechanism 6 includes a driving motor 61, a screw 62 and a turbine box 63. The driving motor 61 and the turbine box 63 are both mounted on the main frame 1. The screw 62 is rotatably mounted on the lower side of the second positioning seat 3, and the turbine box 63 is transmission-connected between the driving motor 61 and the screw 62. The vertical sliding accuracy of the second positioning seat 3 is improved by the guide rod 60, and the driving motor 61 is used to drive the turbine box 63 to work and drive the screw 62 to perform a spiral lifting action, thereby achieving the purpose of driving the second positioning seat 3 to accurately adjust the height.

[0037] Moreover, a limit block 64 is fixedly installed on the outer side of the main frame 1, and the guide rod 60 is slidably matched with the limit block 64. A fastening bolt 65 is also provided on the limit block 64, and the fastening bolt 65 is pressed and matched with the guide rod 60. When the height of the second positioning seat 3 needs to be adjusted, the fastening bolt 65 is loosened so that the guide rod 60 can slide vertically smoothly. When the second positioning seat 3 is raised and lowered to a set height, the fastening bolt 65 is tightened to fix the guide rod 60 at the set height to prevent the second positioning seat 3 from sinking and displacement.

[0038] In this embodiment, the first positioning seat 2 includes a first seat plate 21, two first slide rails 22, and four first supports 23. The two first slide rails 22 are installed on the first seat plate 21 in a horizontally adjustable manner, and the two first slide rails 22 are arranged in parallel at intervals; the four first supports 23 are respectively installed on the two first slide rails 22, and the first supports 23 are longitudinally adjustable and assembled along the extending direction of the first slide rails 22. The multiple first supports 23 constitute a first mounting portion 20 for fixing the DC motor 4.

[0039] Specifically, two transverse guide grooves are provided on the first seat plate 21, and the two first slide rails 22 are both installed in the two transverse guide grooves. The horizontal distance between the two first slide rails 22 can be adjusted, and the position of the first slide rails 22 in the transverse guide grooves is fixed by bolts; two first supports 23 are slidably installed in the first slide rails 22, the longitudinal distance between the two first supports 23 can be adjusted, and the position of the first supports 23 on the first slide rails 22 is fixed by bolts to meet the fixing requirements of DC motors 4 of different specifications.

[0040] Correspondingly, the second positioning seat 3 includes a second seat plate 31, two second slide rails 32, and multiple second supports 33. The two second slide rails 32 are installed on the second seat plate 31 in a horizontally adjustable manner, and the two second slide rails 32 are arranged in parallel at intervals; the multiple second supports 33 are respectively installed on the two second slide rails 32, and the second supports 33 are longitudinally adjustable along the extending direction of the second slide rails 32. The multiple second supports 33 constitute a second mounting portion 30 for fixing the dynamometer 5.

[0041] Specifically, two transverse guide grooves are provided on the second seat plate 31, and the two second slide rails 32 are both installed in the two transverse guide grooves. The horizontal distance between the two second slide rails 32 can be adjusted, and the position of the second slide rails 32 in the transverse guide grooves is fixed by bolts; two second supports 33 are slidably installed in the second slide rails 32, the longitudinal distance between the two second supports 33 can be adjusted, and the position of the second supports 33 on the second slide rails 32 is fixed by bolts to meet the fixing requirements of dynamometers 5 of different specifications. In addition, an accessory box 17 and a tool box 18 are also provided on the main frame 1, which can meet the storage requirements of various parts and tools and are more convenient to use during the determination test.

[0042] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A motor load measurement test bench, characterized in that The utility model comprises a main frame, a first positioning seat and a second positioning seat, wherein the first positioning seat is fixedly arranged on the upper part of the main frame, the second positioning seat is adjustable and arranged on the upper part of the main frame, and the first positioning seat and the second positioning seat are arranged on both sides of the main frame opposite to each other; The first positioning seat is provided with a first mounting portion for fixing the DC motor, the second positioning seat is provided with a second mounting portion for fixing the dynamometer, and a detachably connected coupling is provided between the DC motor and the dynamometer; A control box, a voltmeter and an ammeter are also installed on the main frame. The control box is provided with a first circuit, and the first circuit is used to connect a DC power supply and be electrically connected to a DC motor. The voltmeter and the ammeter are respectively installed on the first circuit, and the voltmeter is arranged in parallel with the DC motor, and the ammeter is arranged in series with the DC motor.

2. The motor load measurement test bench according to claim 1, characterized in that, A load protector is also installed in the first circuit, and the load protector is arranged in parallel with the DC motor.

3. The motor load measurement test bench according to claim 1, characterized in that, The control box is also provided with a second circuit for electrically connecting to the dynamometer, a power regulating controller is installed on the second circuit, and the power regulating controller is arranged in parallel with the dynamometer.

4. The motor load measurement test bench according to claim 1, characterized in that, A lifting drive mechanism and a guide rod are also provided between the main frame and the second positioning seat. The guide rod is vertically slidably installed on the outside of the main frame, and the upper end of the guide rod is fixedly connected to the second positioning seat.

5. The motor load measurement test bench according to claim 4, characterized in that, The lifting drive mechanism includes a driving motor, a screw and a turbine box. The driving motor and the turbine box are both installed on the main frame. The screw is rotatably installed on the lower side of the second positioning seat. The turbine box is transmission-connected between the driving motor and the screw.

6. The motor load measurement test bench according to claim 4, characterized in that, A limit block is fixedly installed on the outer side of the main frame, the guide rod is slidably matched with the limit block, and a fastening bolt is also arranged on the limit block, and the fastening bolt is pressed and matched with the guide rod.

7. The motor load measurement test bench according to claim 1, characterized in that, The first positioning seat comprises a first seat plate, two first slide rails and a plurality of first supports, the two first slide rails are laterally adjustable and installed on the first seat plate, and the two first slide rails are arranged in parallel and spaced apart; The plurality of first supports are respectively mounted on the two first slide rails, and the first supports are longitudinally adjustable along the extension direction of the first slide rails. The plurality of first supports constitute the first mounting portion for fixing the DC motor.

8. The motor load measurement test bench according to claim 1, characterized in that The second positioning seat comprises a second seat plate, two second slide rails and a plurality of second supports, the two second slide rails are laterally adjustable and mounted on the second seat plate, and the two second slide rails are arranged in parallel and spaced apart; A plurality of the second supports are respectively mounted on the two second slide rails, and the second supports are longitudinally adjustable along the extension direction of the second slide rail. The plurality of the second supports constitute the second mounting portion for fixing the dynamometer.

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