Double-trawling test bench of servo motor

Abstract

The utility model discloses a twin-trawling test bench of a servo motor, and belongs to the technical field of servo motor detection, the twin-trawling test bench comprises a substrate, the substrate is provided with at least one mounting seat group, the mounting seat group comprises two mounting supports which are oppositely arranged, a detection support is arranged between the two mounting supports, and the detection support is arranged on the substrate. A torque sensor is installed on the detection support, the two ends of a strain shaft of the torque sensor are connected with connecting pieces, a load motor is installed on one installation support, an output shaft of the load motor is connected with one connecting piece, and a servo motor to be detected is installed on the other installation support. And the output shaft of the servo motor to be tested is connected with the other connecting piece. The device is simple in structure, convenient to operate and universal.

Description

Technical Field

[0001] This application relates to the technical field of servo motor detection, and particularly relates to a counter-rotating test bench for servo motors. Background Art

[0002] The torque test of the motor is mainly used to verify whether the torque of the motor meets the requirements of customers and the needs of the market.

[0003] In the existing torque testing machines, in one case, a hysteresis brake or a servo motor is used for load braking. When using a hysteresis brake for load braking, it is necessary to purchase a corresponding hysteresis brake according to the corresponding test range. Different specifications of hysteresis brakes have different test ranges. Thus, for different test range situations, corresponding hysteresis brakes need to be configured separately. Therefore, the overall use cost of this kind of torque testing machine is relatively high. In another case, when using a servo motor for load braking, there is a situation of frequent load replacement, and the test accuracy is relatively low at low torque.

[0004] Subsequently, relatively improved testing devices also appeared on the market. Related prior art such as the Chinese patent application "Motor Torque Testing Device", application number: CN202323365359.2, discloses: a load assembly, which includes a motor fixing structure for fixing the motor under test, and a load wheel adapted to be driven by the output shaft of the motor under test to rotate; a pulley suspension assembly, which includes a force transmission rope adapted to be partially wound around the load wheel, a calibration piece provided at one end of the force transmission rope away from the load wheel, and a guiding piece for guiding the force transmission rope; and an induction assembly, which includes a trigger block provided on the force transmission rope, and a pair of induction pieces spaced apart for respectively sensing the trigger block. The utility model can reduce the use cost of the testing device and improve the applicability of the testing device to motors with different torques.

[0005] However, the above-mentioned prior art still has room for further improvement. The structure of the torque testing device for the motor can be optimized and improved, thereby improving the universality of the equipment, as well as improving the detection accuracy and reducing the use cost. Summary of the Utility Model

[0006] The technical problem to be solved by this application is to provide a counter-rotating test bench for servo motors, which has a simple structure, is easy to operate and has universality.

[0007] The technical solution adopted by this application is as follows: A drag test bench for a servo motor, including a base plate, on which at least one set of mounting seat groups is provided. The mounting group includes two relatively arranged mounting brackets, and a detection bracket is arranged between the two mounting brackets. A torque sensor is installed on the detection bracket, and both ends of the strain axis of the torque sensor are connected to connecting pieces. A load motor is installed on one of the mounting brackets, and the output shaft of the load motor is connected to one of the connecting pieces. A servo motor to be tested is installed on the other mounting bracket, and the output shaft of the servo motor to be tested is connected to the other connecting piece.

[0008] Compared with the prior art, the advantages of this application are as follows: Two relatively arranged mounting brackets are provided on the base plate, which are respectively used to install the load motor and the servo motor to be tested. The structure layout is relatively simple, which can effectively reduce the floor area of the entire test bench and is also convenient for the testers to operate. The load motor of this application will be connected to the servo motor to be tested. When the servo motor to be tested starts the test, the output shaft of the servo motor to be tested will drive the load motor to work. Whether rotating clockwise or counterclockwise, the output shaft of the servo motor to be tested will drive the output shaft of the load motor to rotate synchronously. And a torque sensor is connected between the two, and the torque of the servo motor to be tested can be intuitively and quickly detected through the torque sensor. Specifically, this application realizes the connection between the load motor and the torque sensor, and the connection between the torque sensor and the servo motor to be tested through connecting pieces. Different types of servo motors to be tested can be connected through different connecting pieces, and this application has universality. In actual use, the load motor, the connecting piece, and the torque sensor are all pre-installed. Then, during the detection, the operator only needs to connect the servo motor to be tested with the corresponding connecting piece to start the detection. The operation of this application is simple and convenient, the structure of the test bench is also relatively simple, and the production cost is low.

[0009] In some embodiments of this application, the mounting bracket is integrally formed and has an L-shaped structure. The mounting bracket includes a mounting base plate and a mounting side plate. The mounting base plate is fixed to the base plate, and a through hole is provided on the mounting side plate. The through hole is coaxially arranged with the strain axis of the torque sensor.

[0010] In some embodiments of this application, a mounting ring is detachably arranged on the outer periphery of the through hole of the other mounting bracket, and the mounting ring is adapted to the servo motor to be tested. In this application, a detachable mounting ring structure is added to adapt to different servo motors to be tested, thereby improving the universality of this application.

[0011] In some embodiments of this application, a plurality of connecting rods are arranged between the mounting base plate and the mounting side plate. The connecting rods are inclined, and both ends of the connecting rods are respectively connected to the mounting base plate and the mounting side plate. The mounting side plate is perpendicular to the base plate.

[0012] In this application, when installing the servo motor to be measured, coaxiality needs to be considered. Then, it is also necessary to consider ensuring the position accuracy and structural strength of the mounting bracket. Therefore, the structural strength of the mounting bracket is further enhanced through the link structure. At the same time, it is ensured that the mounting side plate is perpendicular to the substrate, and the through hole is coaxial with the torque sensor.

[0013] In some embodiments of the present application, the connecting member includes a first connecting head and a second connecting head. The first end of the first connecting head meshes with the first end of the second connecting head, and the second end of the first connecting head and the second end of the second connecting head are connected to the output shaft or the strain shaft.

[0014] In some embodiments of the present application, key grooves are provided at the second ends of the first connecting head and the second connecting head, and the output shaft or the strain shaft is inserted into the key groove and connected to the key groove.

[0015] In some embodiments of the present application, pin holes are provided on the outer peripheral surfaces of the second ends of the first connecting head and the second connecting head, and pins are provided correspondingly. The pins are inserted into the pin holes and pass through the output shaft or the strain shaft.

[0016] In this application, there are two connection schemes between the output shaft, the strain shaft and the key groove. One is that the output shaft and the strain shaft are provided with convex ridges matching the key groove on themselves. After the output shaft and the strain shaft are inserted into the key groove, their circumferential directions are already limited, realizing synchronous rotation. The other is that after the output shaft and the strain shaft are inserted into the key groove, the connection is achieved through the pins passing through. At this time, the two are completely fixed, and the circumferential direction and the axial direction are both limited. Of course, in this application, the two connection schemes can also be combined.

[0017] In some embodiments of the present application, the connecting member further includes a fitting member. The fitting member includes a ring, and 8 teeth are regularly arranged on the outer peripheral surface of the ring. The fitting member is located between the first connecting head and the second connecting head, and the fitting member meshes with the first connecting head and the second connecting head. In this application, the fitting member is added to assist the first connecting head and the second connecting head to achieve a stable and reliable connection.

[0018] In some embodiments of the present application, gear teeth are provided at the first ends of the first connecting head and the second connecting head, and the gear teeth are exactly embedded between two adjacent teeth. The two sides of the teeth are respectively connected to the gear teeth of the first connecting head and the gear teeth of the second connecting head. This is the preferred scheme of this application to achieve a stable and reliable connection of the entire connecting member.

[0019] In some embodiments of the present application, a control device is included. The torque sensor is connected to the control device, and the torque sensor converts mechanical force into an electrical signal and sends it to the control device. The operator reads the torque data of the servo motor to be measured according to the control device.

[0020] On the basis of conforming to the common knowledge in the art, the above embodiments can be combined arbitrarily. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present application will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be used to limit the scope of the present application. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0022] Figure 1 is a schematic structural diagram of the present application;

[0023] Figure 2 is a cross-sectional view of the present application;

[0024] Figure 3 is an exploded structural diagram of the connecting member.

[0025] Among them, the specific descriptions of the reference numerals are as follows: 1, substrate; 2, mounting bracket; 3, detection bracket; 4, torque sensor; 5, connecting member; 51, first connector; 52, second connector; 53, keyway; 54, fitting; 55, ring; 56, ratchet; 57, gear; 6, load motor; 7, through hole; 8, mounting ring; 9, connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present application will be described in detail below in conjunction with the drawings.

[0027] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] A servo motor counter-dragging test bench, as shown in Embodiment 1 Figure 1 、 Figure 2 : It includes a substrate 1, at least one set of mounting seat groups are arranged on the substrate 1, the mounting group includes two relatively arranged mounting brackets 2, a detection bracket 3 is arranged between the two mounting brackets 2, a torque sensor 4 is installed on the detection bracket 3, and two relatively arranged mounting brackets 2 are arranged on the substrate 1, which are respectively used for installing a load motor 6 and a servo motor to be tested. The structural layout is relatively simple, which can effectively reduce the floor area of the entire test bench and is also convenient for the detection personnel to operate.

[0029] Both ends of the strain axis of the torque sensor 4 are connected to the connecting member 5. A load motor 6 is installed on one of the mounting brackets 2, and the output shaft of the load motor 6 is connected to one of the connecting members 5. A servo motor to be measured is installed on the other mounting bracket 2, and the output shaft of the servo motor to be measured is connected to the other connecting member 5. Through different connecting members 5, the connection of various types of servo motors to be measured can be achieved, and the present application has universality. During actual use, the load motor 6, the connecting member 5, and the torque sensor 4 are all pre-installed. Then, during detection, the operator only needs to connect the servo motor to be measured to the corresponding connecting member 5 to start the detection. The operation of the present application is simple and convenient, the structure of the test bench is relatively simple, and the production cost is low.

[0030] The present application includes a control device (not shown in the drawings). The torque sensor 4 is connected to the control device, and the torque sensor 4 converts mechanical force into an electrical signal and sends it to the control device. The operator reads the torque data of the servo motor to be measured according to the control device.

[0031] Embodiment 2, as Figures 1 to 3 shown, the mounting bracket 2 is integrally formed and has an L-shaped structure. The mounting bracket 2 includes a mounting base plate and a mounting side plate. The mounting base plate is fixed to the substrate 1, and a through hole 7 is formed in the mounting side plate. The through hole 7 is coaxially arranged with the strain axis of the torque sensor 4.

[0032] A mounting ring 8 is detachably arranged on the outer periphery of the through hole 7 of the other mounting bracket 2, and the mounting ring 8 is adapted to the servo motor to be measured. In the present application, the detachable mounting ring 8 structure is added to adapt to different servo motors to be measured, thereby improving the universality of the present application.

[0033] A plurality of connecting rods 9 are arranged between the mounting base plate and the mounting side plate. The connecting rods 9 are inclined, and both ends of the connecting rods 9 are respectively connected to the mounting base plate and the mounting side plate. The mounting side plate is perpendicular to the substrate 1.

[0034] In the present application, the installation of the servo motor to be measured needs to consider the coaxiality. Then, it is also necessary to consider ensuring the position accuracy and structural strength of the mounting bracket 2. Then, the structural strength of the mounting bracket 2 is further enhanced through the connecting rod 9 structure, and at the same time, it is ensured that the mounting side plate is perpendicular to the substrate 1, and it is ensured that the through hole 7 is coaxial with the torque sensor 4.

[0035] Other contents of Embodiment 2 are the same as those of Embodiment 1.

[0036] Embodiment 3, as Figures 1 to 3 shown, the connecting member 5 includes a first connecting head 51 and a second connecting head 52. The first end of the first connecting head 51 meshes with the first end of the second connecting head 52. The second end of the first connecting head 51 and the second end of the second connecting head 52 are connected to the output shaft or the strain axis.

[0037] The second ends of the described first connector 51 and the second connector 52 are both provided with key grooves 53, and the output shaft or the strain shaft is inserted into the key grooves 53 and connected to the key grooves 53.

[0038] The outer peripheral surfaces of the second ends of the first connector 51 and the second ends of the second connector 52 are both provided with pin holes and are provided with matching pins. The pins are inserted into the pin holes and pass through the output shaft or the strain shaft.

[0039] In this application, there are two connection schemes between the output shaft, the strain shaft and the key groove 53. One is that the output shaft and the strain shaft are provided with convex ribs on themselves to match the key groove 53. Then, after the output shaft and the strain shaft are inserted into the key groove 53, their circumferential directions are already limited, realizing synchronous rotation. The other is that after the output shaft and the strain shaft are inserted into the key groove 53, the connection is realized by passing through the pins. At this time, the two are completely fixed, and the circumferential direction and the axial direction are both limited. Of course, in this application, the two connection schemes can also be combined.

[0040] The described connector 5 further includes a fitting 54. The fitting 54 includes a ring 55. The outer peripheral surface of the ring 55 is regularly arranged with 8 teeth 56. The fitting 54 is located between the first connector 51 and the second connector 52, and the fitting 54 meshes with the first connector 51 and the second connector 52. In this application, the addition of the fitting 54 helps the first connector 51 and the second connector 52 to achieve a stable and reliable connection.

[0041] The first ends of the first connector 51 and the second ends of the second connector 52 are both provided with teeth 57. The teeth 57 are just embedded between two adjacent teeth 56, and both sides of the teeth 56 are connected to the teeth 57 of the first connector 51 and the teeth 57 of the second connector 52 respectively. This is the preferred scheme of this application to achieve a stable and reliable connection of the entire connector 5.

[0042] The other contents of the third embodiment are the same as those of the first embodiment or the second embodiment.

[0043] The above has introduced this application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand this application and its core idea. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A servo motor drag test bench, characterized in that: The invention comprises a base plate (1), wherein at least one mounting seat group is arranged on the base plate (1), wherein the mounting seat group comprises two mounting brackets (2) arranged opposite to each other, wherein a detection bracket (3) is arranged between the two mounting brackets (2), wherein a torque sensor (4) is mounted on the detection bracket (3), wherein both ends of a strain axis of the torque sensor (4) are connected to connecting members (5), wherein a load motor (6) is mounted on one of the mounting brackets (2), wherein an output shaft of the load motor (6) is connected to one of the connecting members (5), and wherein a servo motor to be tested is mounted on the other mounting bracket (2), wherein an output shaft of the servo motor to be tested is connected to the other connecting member (5).

2. A servo motor drag test bench according to claim 1, characterized in that: The mounting bracket (2) is integrally formed and has an L-shaped structure. The mounting bracket (2) comprises a mounting base plate and a mounting side plate. The mounting base plate is fixed to the base plate (1). A through hole (7) is provided on the mounting side plate. The through hole (7) is coaxially arranged with the strain axis of the torque sensor (4).

3. A servo motor drag test bench according to claim 2, characterized in that: A mounting ring (8) is detachably provided on the outer periphery of the through hole (7) of the other mounting bracket (2), and the mounting ring (8) is adapted to the servo motor to be tested.

4. A servo motor drag test bench according to claim 2, characterized in that: A plurality of connecting rods (9) are arranged between the mounting bottom plate and the mounting side plates. The connecting rods (9) are arranged obliquely. The two ends of the connecting rods (9) are respectively connected to the mounting bottom plate and the mounting side plates. The mounting side plates are arranged perpendicular to the base plate (1).

5. The servo motor drag test bench according to claim 1, characterized in that: The connecting member (5) comprises a first connecting head (51) and a second connecting head (52), the first end of the first connecting head (51) meshes with the first end of the second connecting head (52), and the second end of the first connecting head (51) and the second end of the second connecting head (52) are connected to the output shaft or the strain shaft.

6. A servo motor drag test bench according to claim 5, characterized in that: The second end of the first connector (51) and the second end of the second connector (52) are both provided with a keyway (53), and the output shaft or the strain shaft is inserted into the keyway (53) and connected to the keyway (53).

7. A servo motor towing test bench according to claim 5 or 6, characterized in that: The outer circumferential surfaces of the second ends of the first connector (51) and the second connector (52) are both provided with pin holes and matched with plug pins, and the plug pins are inserted into the pin holes and pass through the output shaft or the strain shaft.

8. The servo motor pair test bench according to claim 5, characterized in that: The connecting member (5) further comprises an engaging member (54), wherein the engaging member (54) comprises a circular ring (55), and eight teeth (56) are regularly arranged on the outer peripheral surface of the circular ring (55). The engaging member (54) is located between the first connecting head (51) and the second connecting head (52), and the engaging member (54) meshes with the first connecting head (51) and the second connecting head (52).

9. The servo motor pair test bench according to claim 8, characterized in that: The first end of the first connector (51) and the first end of the second connector (52) are both provided with gear teeth (57), the gear teeth (57) being just embedded between two adjacent teeth (56), and the two sides of the teeth (56) being respectively connected to the gear teeth (57) of the first connector (51) and the gear teeth (57) of the second connector (52).

10. The servo motor pair test bench according to claim 1, characterized in that: It comprises a control device, the torque sensor (4) being connected to the control device, and the torque sensor (4) converts mechanical force into an electrical signal and sends it to the control device.

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