Roller motor performance test device

Abstract

The utility model provides a roller motor performance test device, which comprises a plurality of connecting discs, the outer diameters of the plurality of connecting discs are the same, and the inner diameters of the plurality of connecting discs are different, so that the plurality of connecting discs can be fixedly connected with end plates of to-be-tested roller motors with different sizes respectively; the first gear can be fixedly connected with the multiple connecting discs so as to move along with the connecting discs when the end plate rotates. The second gear is meshed with the first gear, and the outer diameter of the second gear is smaller than that of the first gear, so that compared with the first gear, the rotating speed of the second gear is increased, and torque is reduced; one end of a transmission shaft of the transmission shaft assembly is fixed with the second gear and is driven by the second gear to synchronously rotate; and one end of the coupler is connected with the other end of the transmission shaft, and the other end is connected with a motor shaft of the accompanying motor. The testing device is small in size, convenient to install, low in manufacturing cost and large in transmission torque, and the problem that a large-torque roller motor belt slips is solved.

Description

Technical Field

[0001] This application belongs to the field of drum motor performance testing, and specifically relates to a drum motor performance testing device. Background Technology

[0002] Currently, roller motors are widely used in the material handling (belt conveyor) industry, with huge market demand. However, performance testing of roller motors is quite difficult. This is because the mainstream testing equipment for roller motors is a belt-driven testing device (the roller motor under test and the accompanying motor are connected by a belt). Since belt-driven testing devices transmit torque via a belt, under high test torque conditions: if a wider belt is not used, slippage will occur between the belt and the roller motor; if a wider belt is used, it will consume a lot of manpower and time, and a narrower belt will need to be used for subsequent testing of narrow rollers; configuring a dedicated belt-driven testing device for high-torque roller motors is not only costly but also requires a large space. Furthermore, since the market demand for high-torque roller motors is not high, configuring a separate belt-driven testing device for this type of motor is not advisable. Therefore, it is essential to configure a testing device for this type of high-torque roller motor that is simple in structure, easy to install, compact in size, and provides high torque transmission. Utility Model Content

[0003] To address the aforementioned technical problems in the prior art, this application provides a drum motor performance testing device.

[0004] The technical solution adopted in this application embodiment is: a drum motor performance testing device, comprising:

[0005] Multiple connecting discs, the multiple connecting discs having the same outer diameter and different inner diameters, so that the multiple connecting discs can be fixedly connected to the end plates of the roller motors to be tested of different sizes respectively;

[0006] A first gear is fixedly connected to a plurality of the connecting discs respectively, so as to follow the rotation of the end plate through the connecting discs;

[0007] A second gear meshes with the first gear, and the outer diameter of the second gear is smaller than that of the first gear, so that the rotational speed of the second gear increases and the torque decreases compared to the first gear;

[0008] The drive shaft assembly has one end of its drive shaft fixed to the second gear and rotates synchronously under the drive of the second gear;

[0009] A coupling, one end of which is connected to the other end of the drive shaft, and the other end of which is connected to the motor shaft of the test motor.

[0010] In an optional embodiment, each of the connecting plates is provided with a plurality of first connecting holes forming a first circle, the first circle being concentric with the connecting plate, and the diameter of the first circle formed by the plurality of first connecting holes on different connecting plates being different; the end plate of the roller motor to be tested is provided with a plurality of third connecting holes, the plurality of third connecting holes forming a circle concentric with the motor shaft of the roller motor to be tested, and the plurality of third connecting holes corresponding one-to-one with the plurality of first connecting holes on one of the connecting plates, and connected by a first bolt passing through it.

[0011] In an optional embodiment, each of the connecting discs is provided with a plurality of second connecting holes forming a second circle. The second circle is concentric with the connecting disc. The diameter of the second circle formed by the plurality of second connecting holes on different connecting discs is the same, and the diameter of the second circle is larger than the diameter of the first circle. The inner peripheral wall of the first gear extends inward to form an annular retaining ring. The annular retaining ring is provided with a plurality of fourth connecting holes. The plurality of fourth connecting holes form a circle concentric with the first gear, and the plurality of fourth connecting holes can correspond one-to-one with the second connecting holes on the plurality of connecting discs, and are connected by second bolts passing through them.

[0012] In an optional embodiment, the roller motor performance testing device further includes a protective cover that covers both the first gear and the second gear.

[0013] In an optional embodiment, the protective cover includes an upper cover and a lower cover. The upper cover has a first chamber with its opening facing downwards, and the first chamber includes a first arc-shaped portion and a second arc-shaped portion connected together. The lower cover has a second chamber with its opening facing upwards, and the second chamber includes a third arc-shaped portion and a fourth arc-shaped portion connected together. When the openings of the upper cover and the lower cover are engaged, the first arc-shaped portion and the third arc-shaped portion connect to form a first annular cavity adapted to the first gear, and the second arc-shaped portion and the fourth arc-shaped portion connect to form a second annular cavity adapted to the second gear.

[0014] In an optional embodiment, the roller motor performance testing device further includes a first mounting base, the transmission shaft assembly is disposed on the first mounting base, and its position can be adjusted relative to the first mounting base so that the second gear can maintain meshing with the first gear.

[0015] In an optional embodiment, the drive shaft assembly further includes a bracket, which is disposed on the first mounting base and can be adjusted in position on the first mounting base. The bracket has a groove that adapts to the outer peripheral surface of the drive shaft, and the drive shaft is placed on the groove of the bracket and can rotate within the groove.

[0016] In an optional embodiment, the support includes a base plate and a frame disposed on the base plate, and the groove is formed on the frame;

[0017] The first mounting base includes a first mounting surface. A first adjusting bolt group and a second adjusting bolt group are provided on the portion of the first mounting base corresponding to the first mounting surface. The first adjusting bolt of the first adjusting bolt group can move along an axial direction perpendicular to the drive shaft and can abut against the base plate from both sides of the base plate perpendicular to the drive shaft direction. The second adjusting bolt of the second adjusting bolt group can move along an axial direction parallel to the drive shaft and can abut against the base plate from both sides of the base plate parallel to the drive shaft direction.

[0018] In an optional embodiment, the first mounting surface is provided with a plurality of first elongated holes extending along the axial direction of the drive shaft, and the base plate is provided with second elongated holes extending along the axial direction of the drive shaft and corresponding to the first elongated holes. Connecting bolts capable of moving along the length direction of the elongated holes are inserted into the corresponding first elongated holes and second elongated holes. The tail end of the connecting bolt is threaded with a fastening block for fixing the bracket in the adjusted position.

[0019] In an optional embodiment, the first mounting base further includes a second mounting surface, the height of which is higher than the height of the first mounting surface;

[0020] The roller motor performance testing device also includes a second mounting base, which includes a third mounting surface. The third mounting surface is flush with the second mounting surface, and the front and rear ends of the roller motor to be tested are respectively placed on the second mounting surface and the third mounting surface.

[0021] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows:

[0022] Compared with traditional roller motor performance testing devices that utilize belt drives, the roller motor performance testing device of this application has a smaller size, greatly reduces the required testing space, is easier to install, lowers manufacturing costs, transmits a large torque, and solves the problem of belt slippage in high-torque roller motors.

[0023] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this application.

[0024] The overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0025] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0026] Figure 1 This is a perspective view of the drum motor performance testing device according to an embodiment of this application.

[0027] Figure 2 This is an exploded view of the drum motor performance testing device according to an embodiment of this application.

[0028] Figure 3 This is a partial cross-sectional view of the drum motor performance testing device according to an embodiment of this application, in which the protective cover has been removed.

[0029] Figure 4 for Figure 3 Enlarged view of section A.

[0030] Figure 5 and Figure 6 These are schematic diagrams of two different models of connectors.

[0031] Figure 7 This is a partial cross-sectional view of the connection position between the connecting disc, the first gear, and the end plate in an embodiment of this application.

[0032] Figure 8 This is an exploded structural diagram of the transmission assembly and the first part of the first mounting base according to an embodiment of this application.

[0033] Figure label:

[0034] 1-Connecting plate; 11-First connecting hole; 12-Second connecting hole;

[0035] 2-First gear; 21-Annular retaining ring; 22-Fourth connecting hole; 23-First bolt; 24-Second bolt;

[0036] 3-Second gear;

[0037] 4-Drive shaft assembly; 41-Drive shaft; 42-Bracket; 421-Base plate; 422-Frame; 4221-Groove; 423-Second elongated hole; 424-Connecting bolt; 425-Fastening block;

[0038] 5-Protective cover; 51-Upper cover; 511-First arc-shaped part; 512-Second arc-shaped part; 52-Lower cover; 521-Third arc-shaped part; 522-Fourth arc-shaped part;

[0039] 6-First mounting base; 61-First part; 611-First mounting surface; 612-First elongated hole; 62-First adjusting bolt; 63-Second adjusting bolt; 64-Second part; 641-Second mounting surface;

[0040] 7-Second mounting base; 71-Third mounting surface;

[0041] 8-Drum motor to be tested; 81-End plate; 82-Third connecting hole. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0043] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted.

[0045] This application provides a roller motor performance testing device, which is used to transmit torque from the roller motor 8 to be tested (the roller motor whose performance needs to be tested and verified) to a test motor (a motor with known performance), and then calculate the performance parameters of the roller motor 8 to be tested through the test parameters of the test motor.

[0046] like Figures 1 to 8As shown, the roller motor performance testing device includes multiple connecting discs 1, a first gear 2, a second gear 3, a transmission shaft assembly 4, and a coupling (not shown in the figure). The multiple connecting discs 1 are of different models and sizes; that is, the outer diameters of the multiple connecting discs 1 are the same, but their inner diameters are different, so that the multiple connecting discs 1 can be fixedly connected to the end plates 81 of roller motors 8 of different sizes to be tested (the different sizes here refer to the circumferential dimensions of the roller motor 8, i.e., the dimensions of the cross-section perpendicular to its axial direction). The first gear 2 can be fixedly connected to the multiple connecting discs 1 respectively, so that it moves with the end plate 81 through the connecting discs 1 when the end plate 81 rotates.

[0047] like Figure 3 As shown, the second gear 3 meshes with the first gear 2, and the outer diameter of the second gear 3 is smaller than that of the first gear 2, so that the rotational speed of the second gear 3 increases while the torque decreases compared to the first gear 2. That is, the first gear 2 is a large gear, and the second gear 3 is a small gear. The transmission shaft assembly 4 includes a transmission shaft 41, one end of which is fixed to the second gear 3 and rotates synchronously under the drive of the second gear 3. One end of a coupling (not shown in the figure) is connected to the other end of the transmission shaft 41, and the other end of the coupling is connected to the motor shaft of the test motor (not shown in the figure). In this way, the second gear 3 can reduce the torque of the first gear 2 and increase its rotational speed, and then transmit it to the coupling and the test motor through the transmission shaft assembly 4.

[0048] The drum motor performance testing device of this application embodiment has a simple structure, is easy to install, small in size, and has a large torque transmission capacity. It can transmit the high torque and low speed of the drum motor 8 under test of different diameters to the first gear 2 through the connecting plate 1, and then to the low torque and high speed of the auxiliary test motor, thereby realizing the performance testing of the drum motor. At the same time, while keeping the other components unchanged, different connecting plates 1 can be replaced to adapt to the drum motor 8 under test of different diameters, satisfying the testing of drum motors 8 of different diameters and expanding the testing range.

[0049] Understandably, for roller motors 8 of different sizes to be tested, the diameter of their end plates 81 is different. Therefore, it is necessary to use connecting discs 1 of different models with different inner diameters to connect with the first gear 2. The inner diameter of the connecting disc 1 should be smaller than the diameter of the end plate 81 to which it is connected. That is, by using connecting discs 1 of different models, roller motors 8 of different sizes to be tested can be connected to the same first gear 2, so that when the roller motor 8 to be tested is started, the end plate 81 can drive the first gear 2 to rotate synchronously.

[0050] like Figure 5 and Figure 6As shown, the connecting disk 1 is annular, and each connecting disk 1 has a plurality of first connecting holes 11 forming a first circle. The first circle is concentric with the connecting disk 1, and the diameter of the first circle formed by the plurality of first connecting holes 11 on different connecting disks 1 is different. For example, Figure 5 The diameter of the first circle formed by the first connecting hole 11 is less than Figure 6 The diameter of the first circle formed by the first connecting hole 11. Figure 5 The size of the test roller motor 8, which is adapted to the connecting plate 1, is smaller than that of the connecting plate 1. Figure 6 The dimensions of the connecting plate 1 in the test roller motor 8 are adapted to the dimensions of the connecting plate 1.

[0051] like Figure 2 As shown, the end plate 81 of the test roller motor 8 is provided with multiple third connecting holes 82. The multiple third connecting holes 82 form a circle concentric with the motor shaft of the test roller motor 8, and the multiple third connecting holes 82 correspond one-to-one with multiple first connecting holes 11 on one of the connecting plates 1, and are connected by first bolts 23 passing through them. See Figure 7 In this way, the connecting plate 1 is connected to the end plate 81 of the roller motor 8 to be tested. This connection method is stable and reliable, and easy to assemble and disassemble.

[0052] Furthermore, such as Figure 5 and Figure 6 As shown, each connecting plate 1 is provided with a plurality of second connecting holes 12 forming a second circle. The second circle is concentric with the connecting plate 1, and the diameter of the second circle formed by the plurality of second connecting holes 12 on different connecting plates 1 is the same, so that each connecting plate 1 can be fitted with the first gear 2. The diameter of the second circle is larger than the diameter of the first circle.

[0053] like Figure 2 As shown, the inner circumferential wall of the first gear 2 extends inward to form an annular retaining ring 21. The annular retaining ring 21 has multiple fourth connecting holes 22, which form a third circle concentric with the first gear 2. The diameter of the third circle is the same as the diameter of the second circle. The multiple fourth connecting holes 22 can correspond one-to-one with the second connecting holes 12 on the multiple connecting discs 1, and are connected by second bolts 24 passing through them. (See Figure 1) Figure 3 Thus, the first gear 2 is connected to the connecting plate 1. This connection method is stable and reliable, and easy to assemble and disassemble.

[0054] When the size of the test roller motor 8 is large, a connecting plate 1 with a larger inner diameter and a larger inner diameter of the first circle formed by the first connecting hole 11 is used to connect the first gear 2 and the test roller motor 8. When the size of the test roller motor 8 is small, a connecting plate 1 with a smaller inner diameter and a smaller inner diameter of the first circle formed by the first connecting hole 11 is used to connect the first gear 2 and the test roller motor 8. In this way, it can be ensured that test roller motors 8 of different sizes can be connected to the first gear 2 of the same size through the corresponding connecting plate 1, so as to realize the performance testing of test roller motors 8 of different sizes.

[0055] This application can transmit the torque of the test roller motor 8 to the first gear 2 through the connecting plate 1. The first gear 2 then transmits the torque to the second gear 3, resulting in a decrease in torque and an increase in speed. The second gear 3 then transmits the torque to the test motor to output performance parameters, thus completing the performance test of the test roller motor 8.

[0056] In some embodiments, such as Figure 1 and Figure 2 As shown, the roller motor performance testing device also includes a protective cover 5, which covers both the first gear 2 and the second gear 3. By providing the protective cover 5, lubricating oil can be prevented from splashing out when the gears rotate.

[0057] For example, continue to combine Figure 2 The protective cover 5 includes an upper cover 51 and a lower cover 52. The upper cover 51 has a first chamber with a downward-facing opening, which includes a first arc-shaped portion 511 and a second arc-shaped portion 512 connected to each other. The lower cover 52 has a second chamber with an upward-facing opening, which includes a third arc-shaped portion 521 and a fourth arc-shaped portion 522 connected to each other. When the openings of the upper cover 51 and the lower cover 52 are aligned and fastened together (see...), the protective cover 51 and the lower cover 52 are... Figure 1 The first arc-shaped portion 511 and the third arc-shaped portion 521 are connected to form a first annular cavity adapted to the first gear 2, and the second arc-shaped portion 512 and the fourth arc-shaped portion 522 are connected to form a second annular cavity adapted to the second gear 3. The two annular cavities intersect and overlap at the meshing point of the two gears. The first gear 2 is located in the first annular cavity, and the second gear 3 is located in the second annular cavity. In this way, the first gear 2 and the second gear 3 are completely protected, preventing lubricating oil from being splashed out, and the lubricating oil can be collected in the second cavity of the lower cover 52 for recycling, avoiding waste.

[0058] In some embodiments, such as Figures 1 to 3 As shown, the roller motor performance testing device also includes a first mounting base 6, and a transmission shaft assembly 4 is mounted on the first mounting base 6 and can be adjusted relative to the first mounting base 6 to allow the second gear 3 to mesh with the first gear 2.

[0059] In some embodiments, such as Figures 1 to 4 As shown, the drive shaft assembly 4 also includes a bracket 42, which is mounted on the first mounting base 6 and its position on the first mounting base 6 is adjustable. The bracket 42 has a groove 4221 that fits the outer peripheral surface of the drive shaft 41, and the groove 4221 extends through both ends of the bracket 42 in the axial direction of the drive shaft 41. The drive shaft 41 is placed in the groove 4221 of the bracket 42 and can rotate within the groove 4221. By providing the groove 4221 on the bracket 42, not only is the drive shaft 41 supported, but the drive shaft 41 can also rotate. It is understood that the drive shaft 41 can only rotate relative to the bracket 42 and cannot move axially relative to the bracket 42, but the drive shaft 41 can move together with the bracket 42. By providing the first mounting base 6, the height of the second gear 3 can be increased so that it can mesh with the first gear 2.

[0060] In some embodiments, such as Figure 8 As shown, the bracket 42 includes a base plate 421 and a frame 422 disposed on the base plate 421, with a groove 4221 formed on the frame 422. Figure 2 As shown, the first mounting base 6 includes a first part 61 and a second part 64. The first part 61 has a first mounting surface 611, and a first adjusting bolt group and a second adjusting bolt group are provided on the first part 61. The first adjusting bolt 62 of the first adjusting bolt group can move in an axial direction perpendicular to the drive shaft 41 and can abut against the base plate 421 from both sides of the base plate 421 in the direction perpendicular to the drive shaft 41. The second adjusting bolt 63 of the second adjusting bolt group can move in an axial direction parallel to the drive shaft 41 and can abut against the base plate 421 from both sides of the base plate 421 in the direction parallel to the drive shaft 41. By setting the adjusting bolt groups, the position of the drive shaft assembly 4 driving the second gear 3 in the lateral and longitudinal directions can be adjusted.

[0061] like Figure 8 As shown, the first mounting surface 611 is provided with a plurality of first elongated holes 612 extending along the axial direction of the drive shaft 41. The bottom of the bracket 42 is provided with a second elongated hole 423 extending along the axial direction of the drive shaft 41 and corresponding to the first elongated holes 612. Connecting bolts 424 that can move along the length direction of the elongated holes are inserted into the corresponding first elongated holes 612 and second elongated holes 423. The tail end of the connecting bolt 424 is threaded with a fastening block 425 for fixing the bracket 42 in the adjusted position.

[0062] For example, continue to combine Figure 8The first mounting surface 611 has a first elongated hole 612 on each side near its axial direction parallel to the drive shaft 41. The two ends of the first elongated hole 612 extend to the two sides of the first mounting surface 611 near its axial direction perpendicular to the drive shaft 41. The bottom of the bracket 42 has a second elongated hole 423 near each of its four corners. Two of the second elongated holes 423 simultaneously face one of the first elongated holes 612 and are each fitted with a connecting bolt 424. The other two second elongated holes 423 simultaneously face another of the first elongated holes 612 and are each fitted with a connecting bolt 424. This reduces the number of holes and simplifies manufacturing.

[0063] like Figure 4 As shown, the frame 422 includes multiple vertical plates spaced apart sequentially along the axial direction of the drive shaft 41. Each vertical plate has a semi-circular groove extending downwards from its top, and the semi-circular grooves of the multiple vertical plates together form the entire groove 4221. The second elongated hole is located near the four corners of the base plate 421. When it is necessary to adjust the mounting position of the drive shaft assembly 4 on the first mounting surface 611, first loosen the four connecting bolts 424. When the drive shaft assembly 4 moves along the axial direction of the drive shaft 41 (for ease of description, this direction is defined as the lateral direction), the four connecting bolts 424 can move along the first elongated hole 612. After the drive shaft assembly 4 moves to the appropriate position, rotate the fastening block 425 so that the fastening block 425 abuts against the lower side of the first mounting surface 611, and the bolt heads of the connecting bolts 424 abut against the top surface of the base plate 421. In this way, the lateral adjustment of the drive shaft assembly 4 on the first mounting base 6 and the fixation of the drive shaft assembly 4 to the first mounting base 6 are realized.

[0064] The width of the second elongated hole 423 perpendicular to its length direction (for ease of description, this direction is defined as the longitudinal direction) is greater than the diameter of the bolt shank of the connecting bolt 424, so that the bolt shank of the connecting bolt 424 can move in the longitudinal direction within the second elongated hole 423, thereby enabling the drive shaft assembly 4 to drive the second gear 3 to make fine adjustments in the longitudinal direction on the first mounting base 6.

[0065] In some embodiments, such as Figure 1 and Figure 2 As shown, the roller motor performance testing device also includes a second mounting base 7, which includes a third mounting surface 71. The second mounting surface 64 is provided on the second part 64 of the first mounting base 6. The height of the first mounting surface 611 is lower than the height of the second mounting surface 641. The third mounting surface 71 is flush with the second mounting surface 641. The front and rear ends of the roller motor 8 to be tested are respectively placed on the second mounting surface 641 and the third mounting surface.

[0066] This application allows for lateral and longitudinal position adjustments of the drive shaft assembly 4 via the first and second adjusting bolt sets. After position adjustment, the drive shaft assembly 4 is then fixed to the first mounting base 6 by connecting bolts 424. The first mounting base 6 and the second mounting base 7 can be adjusted in distance on the test bench to accommodate test roller motors 8 of different diameters and widths.

[0067] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. A performance testing device for a drum motor, characterized in that, include: Multiple connecting discs, the multiple connecting discs having the same outer diameter and different inner diameters, so that the multiple connecting discs can be fixedly connected to the end plates of the roller motors to be tested of different sizes respectively; A first gear is fixedly connected to a plurality of the connecting discs respectively, so as to follow the rotation of the end plate through the connecting discs; A second gear meshes with the first gear, and the outer diameter of the second gear is smaller than that of the first gear, so that the rotational speed of the second gear increases and the torque decreases compared to the first gear; A drive shaft assembly, one end of which is fixed to the second gear and rotates synchronously under the drive of the second gear; A coupling, one end of which is connected to the other end of the drive shaft, and the other end of which is connected to the motor shaft of the test motor.

2. The drum motor performance testing device according to claim 1, characterized in that, Each of the connecting plates is provided with a plurality of first connecting holes forming a first circle. The first circle is concentric with the connecting plate, and the diameter of the first circle formed by the plurality of first connecting holes on different connecting plates is different. The end plate of the roller motor to be tested is provided with a plurality of third connecting holes. The plurality of third connecting holes form a circle concentric with the motor shaft of the roller motor to be tested, and the plurality of third connecting holes correspond one-to-one with the plurality of first connecting holes on one of the connecting plates, and are connected by a first bolt passing through it.

3. The drum motor performance testing device according to claim 2, characterized in that, Each of the connecting discs is provided with a plurality of second connecting holes forming a second circle. The second circle is concentric with the connecting disc. The diameter of the second circle formed by the plurality of second connecting holes on different connecting discs is the same, and the diameter of the second circle is larger than the diameter of the first circle. The inner peripheral wall of the first gear extends inward to form an annular retaining ring. The annular retaining ring is provided with a plurality of fourth connecting holes. The plurality of fourth connecting holes form a circle concentric with the first gear, and the plurality of fourth connecting holes can correspond one-to-one with the second connecting holes on the plurality of connecting discs, and are connected by second bolts passing through them.

4. The drum motor performance testing device according to claim 1, characterized in that, The performance testing device for the drum motor also includes a protective cover, which covers both the first gear and the second gear.

5. The drum motor performance testing device according to claim 4, characterized in that, The protective cover includes an upper cover and a lower cover. The upper cover has a first chamber with its opening facing downwards, and the first chamber includes a first arc-shaped portion and a second arc-shaped portion connected together. The lower cover has a second chamber with its opening facing upwards, and the second chamber includes a third arc-shaped portion and a fourth arc-shaped portion connected together. When the openings of the upper cover and the lower cover are engaged, the first arc-shaped portion and the third arc-shaped portion connect to form a first annular cavity adapted to the first gear, and the second arc-shaped portion and the fourth arc-shaped portion connect to form a second annular cavity adapted to the second gear.

6. The drum motor performance testing device according to claim 1, characterized in that, The roller motor performance testing device also includes a first mounting base, on which the transmission shaft assembly is mounted and can be adjusted relative to the first mounting base to allow the second gear to mesh with the first gear.

7. The drum motor performance testing device according to claim 6, characterized in that, The drive shaft assembly further includes a bracket, which is disposed on the first mounting base and can be adjusted in position on the first mounting base. The bracket has a groove that adapts to the outer peripheral surface of the drive shaft. The drive shaft is placed on the groove of the bracket and can rotate within the groove.

8. The drum motor performance testing device according to claim 7, characterized in that, The support includes a base plate and a frame disposed on the base plate, and the groove is formed on the frame; The first mounting base includes a first mounting surface. A first adjusting bolt group and a second adjusting bolt group are provided on the portion of the first mounting base corresponding to the first mounting surface. The first adjusting bolt of the first adjusting bolt group can move along an axial direction perpendicular to the drive shaft and can abut against the base plate from both sides of the base plate perpendicular to the drive shaft direction. The second adjusting bolt of the second adjusting bolt group can move along an axial direction parallel to the drive shaft and can abut against the base plate from both sides of the base plate parallel to the drive shaft direction.

9. The drum motor performance testing device according to claim 8, characterized in that, The first mounting surface is provided with a plurality of first elongated holes extending along the axial direction of the drive shaft. The base plate is provided with second elongated holes extending along the axial direction of the drive shaft and corresponding to the first elongated holes. Connecting bolts capable of moving along the length direction of the elongated holes are inserted into the corresponding first elongated holes and second elongated holes. The tail end of the connecting bolt is threaded with a fastening block for fixing the bracket in the adjusted position.

10. The drum motor performance testing device according to claim 9, characterized in that, The first mounting base further includes a second mounting surface, the height of which is greater than the height of the first mounting surface; The roller motor performance testing device also includes a second mounting base, which includes a third mounting surface. The third mounting surface is flush with the second mounting surface, and the front and rear ends of the roller motor to be tested are respectively placed on the second mounting surface and the third mounting surface.

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