A rotation load simulation device

Abstract

The present invention discloses a rotation load simulation device, which relates to motor detection and aims to solve the problem that load instability brings great troubles to the adjustment and testing of torque and speed, affecting the test results. The key points of its technical solution are: it includes a base, a reference plate made of metal material is fixedly connected to one side of the base, a detection disk for fixed connection with the output end of the motor to be tested is rotatably connected on the reference plate, a magnetic suction piece is provided on the detection disk, and the magnetic suction piece is used to provide the detection disk with resistance to adsorbing the reference plate to limit the rotation of the detection disk, and a support for fixing the motor to be tested is detachably connected on the base. The present invention uses the detection disk to adsorb the reference plate through the magnetic suction piece to simulate the load test, and the suction force of the magnetic suction piece is not easily affected by external factors such as the rotation speed, thereby improving the detection accuracy.

Description

Technical Field

[0001] The present invention relates to motor detection, and more particularly to a rotation load simulation device. Background Art

[0002] The loads carried by motors and servo mechanisms in actual applications are complex and changeable, and considering that the actual production process cannot be tested under real loads, it is necessary to provide a system that can simulate the mechanical loads in actual applications.

[0003] At present, in most motor experiments, there are three common motor loads. One is to use a DC generator connected to a resistor as a load; the second is to use the energy consumption braking of an AC asynchronous motor as a load; the third is to use an electromagnetic eddy current brake as a load. The torque of these three loads varies with the speed. In motor testing, the unstable load brings great trouble to the adjustment and testing of torque and speed, affecting the test results.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a rotational load simulation device, which uses a detection disk to adsorb a reference plate through a magnetic suction member to simulate a load test. The suction force of the magnetic suction member is not easily affected by external factors such as the rotation speed, thereby improving the detection accuracy.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: a rotational load simulation device, including a base, a reference plate made of metal is fixedly connected to one side of the base, a detection disk for being fixedly connected to the output end of the motor to be tested is rotatably connected to the reference plate, a magnetic suction part is provided on the detection disk, and the magnetic suction part is used to provide resistance for the detection disk to adsorb the reference plate to limit the rotation of the detection disk, and a support for fixing the motor to be tested is detachably connected to the base.

[0007] By adopting the above technical scheme, the support arranged on the base plays a good supporting role for the motor to be tested, and when the output end of the motor to be tested is fixedly connected to the detection disk, the magnetic suction component on the detection disk adsorbs the metal reference plate, thereby preventing the motor to be tested from driving the detection disk to rotate. Since the force of the magnetic suction component adsorbing the reference plate is related to the material of the magnetic suction component, it is not easily affected by the rotation speed and torque of the detection disk. Therefore, the load capacity of the motor to be tested can be intuitively detected through the rotation of the detection disk, which is convenient for the simulation detection of the motor to be tested and improves the accuracy of motor detection.

[0008] The present invention is further configured as follows: a ring-shaped groove is formed on one side of the detection disk facing the reference plate, the magnetic attraction component is an electromagnet embedded in the ring-shaped groove, and a plurality of positioning protrusions for limiting the rotation of the magnetic attraction component relative to the detection disk are distributed in a ring array on the inner peripheral wall of the ring-shaped groove.

[0009] By adopting the above technical scheme, the detection disk and the magnetic attraction component are clamped together by the annular groove, and the mutual rotation of the magnetic attraction component and the detection disk is limited by the clamping of the positioning protrusion and the magnetic attraction component, thereby improving the magnetic attraction force between the detection disk and the reference plate and improving the accuracy of the motor load simulation test.

[0010] The present invention is further configured as follows: a fixing cylinder arranged at the axis of the detection disk and facing away from the reference plate is provided, a cavity for accommodating the output end of the motor to be tested is provided in the fixing cylinder, and a fastener for squeezing the output end of the motor to be tested is provided on the fixing cylinder.

[0011] By adopting the above technical solution, the output end of the motor to be tested is connected to the reference plate through the fixing tube, and the output end of the motor to be tested is squeezed by a fastener, which makes it easy for people to install the motor to be tested and improves people's detection work efficiency.

[0012] The present invention is further configured as follows: the support comprises a support seat and limiting columns located on both sides of the support seat, and a pressure plate for limiting the longitudinal displacement of the motor to be tested is detachably connected between adjacent limiting columns.

[0013] By adopting the above technical solution, the motor to be tested is clamped by the support seat and the pressure plate, and the two sides of the motor to be tested are limited by the two limit columns, thereby improving the installation accuracy and stability of the motor to be tested.

[0014] The present invention is further configured as follows: a plurality of through holes and adjustment holes are arranged in an array on the base, and a fixing bolt which respectively penetrates through the through holes and the adjustment holes and is threadedly connected to the support seat and the limiting column is provided at the bottom end of the base.

[0015] By adopting the above technical solution, through the provision of through holes and adjustment holes, and connecting with fixing bolts, it is convenient for people to adjust the distance between the support seat and the limit column and the detection disk, and it is suitable for fixing motors to be tested of different specifications.

[0016] The present invention is further configured as follows: the support seat includes a plurality of support columns and a support plate fixedly connected to the top ends of the plurality of support columns, the bottom ends of the plurality of support columns are fixedly connected to the base by fixing bolts, and the edges of the support plates are fixedly connected with a plurality of triangular steels coaxially arranged with the detection disk.

[0017] By adopting the above technical solution, through the triangular steel located at the edge of the support plate and arranged in the same direction as the detection disk, when the motor to be tested is placed between the two triangular steels, the triangular steel is used to limit the motor to be tested, thereby improving the coaxiality of the motor to be tested and the detection disk, and improving the stability of the motor to be tested during operation, thereby improving the accuracy of load detection of the motor to be tested.

[0018] The present invention is further configured as follows: a threaded hole is provided at the top of the limiting column, limiting grooves connected to the threaded hole are provided on both sides of the pressing plate, and a self-locking bolt for pressing the pressing plate is threadedly connected in the threaded hole.

[0019] By adopting the above technical solution, the self-locking bolt passes through the limit groove through the threaded hole and is threadedly connected to the limit column, so that the self-locking bolt squeezes the pressure plate, thereby improving the connection strength between the motor to be tested and the support seat.

[0020] The present invention is further configured as follows: a central axis passing through a reference plate is fixedly connected to the axis center of the detection disk, a magnetic steel block is fixedly connected to one end of the central axis passing through the reference plate, and a Hall device is provided on the side of the reference plate facing away from the detection disk, and the Hall device is used to detect changes in the magnetic field of the magnetic steel block and output a pulse signal.

[0021] By adopting the above technical solution, a magnetic steel block is arranged on the peripheral wall of the central axis, and when the detection disk rotates, the magnetic steel block can be driven to rotate, and then the magnetic field change is detected by the Hall device, and the speed of the motor to be tested with load can be detected by the frequency of the output pulse signal.

[0022] The present invention is further configured as follows: a special-shaped groove for accommodating a magnetic steel block is provided at one end of the central axis facing away from the detection disk.

[0023] By adopting the above technical solution, since the special-shaped groove is set at the end of the center axis away from the detection disk, it is convenient for people to install and replace the magnetic steel block, and the connection strength between the magnetic steel block and the center axis is improved, thereby improving the accuracy of the detection rotation speed.

[0024] In summary, the present invention has the following beneficial effects:

[0025] The support is arranged on the base to provide a good support for the motor to be tested. When the output end of the motor to be tested is fixedly connected to the detection disk, the magnetic suction component on the detection disk adsorbs the metal reference plate, thereby preventing the motor to be tested from driving the detection disk to rotate. Since the force of the magnetic suction component adsorbing the reference plate is related to the material of the magnetic suction component, it is not easily affected by the rotation speed and torque of the detection disk. Therefore, the load capacity of the motor to be tested can be intuitively detected through the rotation of the detection disk, which is convenient for simulated detection of the motor to be tested and improves the accuracy of motor detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0027] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0028] Figure 3 for Figure 2 The enlarged schematic diagram of the middle A part;

[0029] Figure 4 is a cross-sectional view of the present invention;

[0030] Figure 5 for Figure 4 Enlarged schematic diagram of part B in the middle.

[0031] In the figure: 1. base; 2. reference plate; 3. detection plate; 4. annular groove; 5. fixing bolt; 6. fixing cylinder; 7. fastener; 8. support seat; 9. limit column; 10. pressure plate; 11. through hole; 12. adjustment hole; 13. support column; 14. support plate; 15. triangular steel; 16. limit groove; 17. self-locking bolt; 18. center axis; 19. magnetic steel block; 20. Hall device; 21. special-shaped groove. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] A rotation load simulation device, such as Figure 1 As shown, it includes a base 1, one side of the base 1 is fixedly connected with a reference plate 2 made of metal material, and the reference plate 2 is rotatably connected with a detection disk 3 for being fixedly connected to the output end of the motor to be tested, and a magnetic attraction member is provided on the detection disk 3. The magnetic attraction member is used to provide resistance for the detection disk 3 to adsorb the reference plate 2 to limit the rotation of the detection disk 3, and the base 1 is detachably connected with a support for fixing the motor to be tested.

[0034] like Figure 5 As shown, a circular groove 4 is formed on one side of the detection disk 3 facing the reference plate 2, and the suction piece is an electromagnet with a plate-like structure, so that the magnetic suction piece is embedded in the circular groove 4, and a plurality of positioning protrusions for limiting the rotation of the magnetic suction piece relative to the detection disk 3 are distributed in a circular array on the inner peripheral wall of the circular groove 4, and connecting holes distributed in a circular array and connected to the circular groove 4 are opened on the detection disk 3 by a punch press, and the magnetic suction piece is fixedly connected to the detection disk 3 by bolts.

[0035] like Figure 5As shown, the axis of the detection disk 3 is fixedly connected to the central axis 18 that passes through the reference plate 2, and the axis of the detection disk 3 is provided with a fixing cylinder 6 that is arranged in the direction away from the reference plate 2, and the fixing cylinder 6 is provided with a cavity for accommodating the output end of the motor to be tested, and the fixing cylinder 6 is provided with a fastener 7 for squeezing the output end of the motor to be tested. Specifically, the fastener 7 is a hexagon socket bolt, and the hexagon socket bolt passes through the fixing cylinder 6 and is clamped with the output end of the motor to be tested.

[0036] like Figure 2 As shown, the support includes a support seat 8 and limit columns 9 located on both sides of the support seat 8, and a pressure plate 10 for limiting the longitudinal displacement of the motor to be tested is detachably connected between adjacent limit columns 9. Specifically, a plurality of through holes 11 and adjustment holes 12 are arranged in an array on the base 1, and the bottom end of the base 1 is provided with fixing bolts 5 which respectively penetrate the through holes 11 and the adjustment holes 12 and are threadedly connected to the support seat 8 and the limit columns 9.

[0037] like Figure 1 As shown, the support seat 8 includes a plurality of support columns 13 and a support plate 14 fixedly connected to the top ends of the plurality of support columns 13. The bottom ends of the plurality of support columns 13 are fixedly connected to the base 1 by fixing bolts 5. A plurality of triangular steels 15 coaxially arranged with the detection disk 3 are fixedly connected to the edge of the support plate 14, and the support seat 8 and the limit column 9 are made of cast iron.

[0038] like Figure 1 As shown, a threaded hole is formed at the top of the limiting column 9, and limiting grooves 16 communicating with the threaded hole are formed on both sides of the pressing plate 10, and self-locking bolts 17 for squeezing the pressing plate 10 are threadedly connected in the threaded hole.

[0039] like Figure 3 As shown, a special-shaped groove 21 is provided on one end of the central axis 18 passing through the reference plate 2. Specifically, the special-shaped hole is T-shaped, and its large end is arranged toward the axial direction of the central axis 18, and a magnetic steel block 19 is embedded in the special-shaped groove 21. A Hall device 20 is provided on the side of the reference plate 2 facing away from the detection disk 3. The Hall device 20 is used to detect the magnetic field changes of the magnetic steel block 19 and output a pulse signal. Specifically, the Hall device 20 is an electronic accessory for sensing magnetic fields that is well known to those skilled in the art and will not be elaborated herein.

[0040] During the working process, the motor to be tested is placed on the support seat 8, and the motor to be tested is limited by the setting of two triangular steels 15, and the motor to be tested is positioned so that its output end is embedded in the fixing tube 6, and the fixing tube 6 is fixedly connected to the output end of the motor to be tested by tightening the fastener 7, and then the pressure plate 10 is placed above the motor to be tested, and the self-locking bolt 17 is rotated so that the self-locking bolt 17 passes through the limiting groove 16 and the threaded hole in turn, and a downward squeezing force is applied to the pressure plate 10, so that the motor to be tested is firmly installed on the support, and then the motor to be tested is started to rotate its output end. Since the detection disk 3 is adsorbed on the reference plate 2 through the magnetic suction piece, and the detection disk 3 is rotatably connected to the reference plate 2 through the central axis 18, the motor to be tested drives The detection disk 3 rotates, and when the detection disk 3 rotates and drives the center shaft 18 to rotate, since the magnetic steel block 19 is embedded in the center shaft 18 through the special-shaped groove 21, when the center shaft 18 rotates, the magnetic field of the magnetic steel block 19 is changed, and the change of the magnetic field is converted into a pulse signal through the Hall device 20, so that people can detect the change of the pulse signal through an oscilloscope, and then detect the rotation speed of the detection disk 3 driven by the motor to be tested. Since the through hole 11 and the adjustment hole 12 are provided on the base 1, it is convenient for people to adjust the spacing according to the model of the motor to be tested, and it is suitable for testing motors to be tested of different specifications. The threaded connection method of the fixing bolt 5 is convenient for people to adjust, and the top of the limit column 9 is threadedly connected to the self-locking bolt 17, which is convenient for people to operate the pressure plate 10.

[0041] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A rotation load simulation device, characterized in that: The invention comprises a base (1), one side of the base (1) is fixedly connected to a reference plate (2) made of a metal material, the reference plate (2) is rotatably connected to a detection disk (3) for being fixedly connected to an output end of a motor to be tested, the detection disk (3) is provided with a magnetic attraction member, the magnetic attraction member is used to provide resistance for the detection disk (3) to adsorb the reference plate (2) so as to limit the rotation of the detection disk (3), and the base (1) is detachably connected to a support for fixing the motor to be tested; The detection disk (3) is recessed on one side facing the reference plate (2) to form an annular embedding groove (4); the magnetic attraction member is an electromagnet embedded in the annular embedding groove (4); and a plurality of positioning protrusions for limiting the rotation of the magnetic attraction member relative to the detection disk (3) are distributed in an annular array on the inner peripheral wall of the annular embedding groove (4); A central axis (18) penetrating the reference plate (2) is fixedly connected at the axis center of the detection disk (3); a magnetic steel block (19) is fixedly connected to one end of the central axis (18) penetrating the reference plate (2); a Hall device (20) is provided on a side of the reference plate (2) facing away from the detection disk (3); the Hall device (20) is used to detect changes in the magnetic field of the magnetic steel block (19) and output a pulse signal.

2. A rotation load simulation device according to claim 1, characterized in that: A fixing cylinder (6) is provided at the axis of the detection disk (3) and is arranged in a direction away from the reference plate (2). A cavity for accommodating the output end of the motor to be tested is provided in the fixing cylinder (6). A fastener (7) for pressing the output end of the motor to be tested is provided on the fixing cylinder (6).

3. A rotation load simulation device according to claim 1, characterized in that: The support comprises a support seat (8) and limiting columns (9) located on both sides of the support seat (8), and a pressure plate (10) for limiting the longitudinal displacement of the motor to be tested is detachably connected between adjacent limiting columns (9).

4. A rotation load simulation device according to claim 3, characterized in that: The base (1) is provided with a plurality of through holes (11) and adjustment holes (12) arranged in an array, and the bottom end of the base (1) is provided with fixing bolts (5) respectively penetrating the through holes (11) and the adjustment holes (12) and being threadedly connected to the support seat (8) and the limiting column (9).

5. A rotation load simulation device according to claim 4, characterized in that: The support base (8) comprises a plurality of support columns (13) and a support plate (14) fixedly connected to the top ends of the plurality of support columns (13); the bottom ends of the plurality of support columns (13) are fixedly connected to the base (1) via fixing bolts (5); and a plurality of triangular steels (15) coaxially arranged with the detection disk (3) are fixedly connected to the edge of the support plate (14).

6. A rotation load simulation device according to claim 3, characterized in that: A threaded hole is formed at the top of the limiting column (9), and limiting grooves (16) communicating with the threaded hole are formed on both sides of the pressing plate (10). Self-locking bolts (17) for pressing the pressing plate (10) are threadedly connected in the threaded hole.

7. A rotation load simulation device according to claim 1, characterized in that: A special-shaped groove (21) for accommodating a magnetic steel block (19) is formed at one end of the central axis (18) facing away from the detection disk (3).

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