Motor feed test device

Abstract

The utility model relates to the technical field of motor feed testing, and particularly discloses a motor feed testing device, in which a load box is provided with a first accommodating cavity for storing electrolyte, the cross sectional area of conductive members is gradually increased along the vertical upward direction, the plurality of conductive members are all connected to a support plate, and a lifting mechanism can drive the support plate to move vertically downward. The cooling box is provided with a second containing cavity, the load box is arranged in the second containing cavity, and the outer side wall of the load box and the inner wall of the second containing cavity are arranged in a spaced mode to form a cooling flow channel used for circulation of cooling liquid. When a motor feed test is carried out, the lifting mechanism drives the supporting plate to move up and down to adjust the contact area of the conductive part and electrolyte, so that different loads are formed, the feed test requirements of motors with different span design parameters are met, meanwhile, cooling liquid flows into the cooling flow channel, circulating cooling of the outer wall of the load box is achieved, local overheating is avoided, and the service life of the load box is prolonged. And the cooling effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of motor feeding test, in particular to a motor feeding test device. Background Art

[0002] The motor power feeding characteristic test measures the motor's current, voltage, resistance and other parameters online to obtain the motor's power feeding characteristics. Most existing motor power feeding tests use controller power feeding for testing. During the test, the controller needs to be selected according to the motor parameters. At the same time, with the development trend of motor diversity, the span of motor design parameters is further increased. The existing motor power feeding test method will consume a lot of controller selection time, reduce the efficiency of motor power feeding test, and further increase the test cost. Utility Model Content

[0003] The purpose of the utility model is to provide a motor feeding test device, which can avoid local overheating during the test process, has a good cooling effect, and effectively improves the efficiency of the motor feeding test.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a motor feeding test device, comprising:

[0006] base;

[0007] a load box, the load box being disposed on the base and having a first opening and a first accommodating cavity communicating with the first opening, wherein the first accommodating cavity is used for storing an electrolyte;

[0008] A plurality of conductive members, wherein the cross-sectional areas of the conductive members gradually increase in a vertically upward direction, and the plurality of conductive members are electrically connected to the motor to be tested;

[0009] A support plate and a lifting mechanism, wherein the plurality of conductive members are connected to the support plate, and the lifting mechanism is used to drive the support plate to move vertically downward so that the plurality of conductive members extend into the electrolyte;

[0010] A cooling box is arranged on the base, the cooling box has a second opening, and a second accommodating cavity connected to the second opening, the load box is placed in the second accommodating cavity, the outer wall of the load box and the inner wall of the second accommodating cavity are spaced apart to form a cooling channel, and the cooling channel is used to circulate coolant.

[0011] As an optimal technical solution for the above-mentioned motor power feeding test device, the lifting mechanism includes a screw, a fixing rod and a driving member, and a first fixing ear and a second fixing ear are respectively protruded on both sides of the support plate. The fixing rod is arranged on the base, and the fixing rod and the first fixing ear slide together in the vertical direction. The screw is rotatably connected to the base, and the screw is threadedly connected to the second fixing ear. The driving member can drive the screw to rotate to drive the support plate to move vertically downward, so that several of the conductive members extend into the electrolyte.

[0012] As an optimal technical solution of the above-mentioned motor power feeding test device, the motor power feeding test device also includes a plurality of conductive blocks and a plurality of wires, the plurality of conductive blocks are electrically connected to the plurality of conductive members in a one-to-one correspondence, the plurality of wires are arranged in a one-to-one correspondence to the plurality of conductive blocks, and the wires are electrically connected between the motor to be tested and the conductive blocks.

[0013] As an optimal technical solution of the above-mentioned motor power feeding test device, the motor power feeding test device also includes a connecting plate, and a first mounting ear and a second mounting ear are respectively protruded on both sides of the connecting plate, the first mounting ear is connected to the fixing rod, and the screw is rotatably connected to the second mounting ear, and a plurality of conductive blocks are arranged on the support plate, one end of the wire is electrically connected to the conductive block, and the other end of the wire passes through the connecting plate and is electrically connected to the motor to be tested.

[0014] As an optimal technical solution for the above-mentioned motor power feeding test device, the wire includes a connecting part and a telescopic part, the telescopic part is spiral-shaped, and the telescopic part abuts between the conductive block and the connecting plate, the connecting part is located on the connecting plate, and the connecting part is connected between the telescopic part and the motor to be tested.

[0015] As a preferred technical solution of the above-mentioned motor power feeding test device, a first slot and a second slot are respectively provided at both ends of the fixing rod, and the fixing rod is also provided with a pipe connecting the first slot and the second slot, and several of the wires pass through the first slot and the pipe in sequence and extend out of the second slot.

[0016] As an optimal technical solution of the above-mentioned motor power feeding test device, the motor power feeding test device also includes a protective cover and a support, the protective cover is arranged on the base, the fixing rod is connected to the protective cover, and the support is fixedly connected between the second mounting ear and the protective cover.

[0017] As an optimal technical solution of the above-mentioned motor power feeding test device, the motor power feeding test device also includes a first bearing and a second bearing, the outer ring of the first bearing is fixedly connected to the pillar, the inner ring of the first bearing is fixedly connected to the screw, the outer ring of the second bearing is fixedly connected to the base, and the inner ring of the second bearing is fixedly connected to the screw.

[0018] As a preferred technical solution of the above-mentioned motor power feeding test device, the support plate includes a first support part and a second support part, the first support part is connected to the bottom of the second support part, the first support part cooperates with the load box and can seal the first opening, the second support part cooperates with the cooling box and can seal the second opening, and the length of the conductive part is not greater than the depth of the first accommodating cavity.

[0019] As a preferred technical solution of the above-mentioned motor feeding test device, the inner wall of the first accommodating cavity is covered with insulating material.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides a motor power feeding test device, which includes: a base, a load box, a plurality of conductive parts, a support plate, a lifting mechanism and a cooling box. The load box is provided with a first opening and a first accommodating cavity connected to the first opening. The first accommodating cavity is used to store electrolyte. The cross-sectional area of ​​the conductive parts gradually increases in the vertical upward direction. The plurality of conductive parts are electrically connected to the motor to be tested. The plurality of conductive parts are connected to the support plate. The lifting mechanism is used to drive the support plate to move vertically downward so that the plurality of conductive parts extend into the electrolyte. The cooling box is arranged on the base. The cooling box is provided with a second opening and a second accommodating cavity connected to the second opening. The load box is placed in the second accommodating cavity. The outer wall of the load box and the inner wall of the second accommodating cavity are spaced apart to form a cooling channel. The cooling channel is used to circulate cooling liquid. With such an arrangement, during the actual motor power feeding test, the electrolyte will undergo an electrochemical reaction to form ions. These ions will move in a direction under the action of the electric field to form an electric current, thereby forming a load for the tested motor. The lifting mechanism drives the support plate to move up and down in the vertical direction, and then adjusts the contact area between the conductive part and the electrolyte to form different loads, thereby meeting the power feeding test requirements of motors with different span design parameters to complete the required speed, torque, current and related tests. It has strong versatility and effectively improves the efficiency of the motor power feeding test. At the same time, the coolant circulating in the cooling channel accelerates the circulation cooling of the outer wall of the load box to avoid local overheating during the test process, and the cooling effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1The structure diagram of the motor feeding test device provided by the utility model Figure 1 ;

[0023] Figure 2 A schematic diagram of part of the structure of the motor feeding test device provided by the utility model;

[0024] Figure 3 The structure diagram of the motor feeding test device provided by the utility model Figure 2 .

[0025] in:

[0026] 1. Base; 2. Load box; 3. Conductive parts;

[0027] 4. Support plate; 41. First support portion; 42. Second support portion;

[0028] 5. Screw; 6. Fixing rod; 7. First fixing lug; 8. Second fixing lug; 9. Cooling box; 10. Conductive block;

[0029] 11. Wire; 111. Connecting portion; 112. Telescopic portion;

[0030] 12. Connecting plate; 13. First mounting ear; 14. Second mounting ear; 15. First notch; 16. Support; 17. Water outlet; 18. Water inlet; 19. Water supply pipe; 20. Overflow pipe; 21. Drain pipe. DETAILED DESCRIPTION

[0031] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0033] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or removable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0034] Unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0036] like Figures 1 to 3As shown, this embodiment provides a motor power feeding test device, which includes: a base 1, a load box 2, several conductive members 3, a support plate 4, a lifting mechanism, and a cooling box 9. The load box 2 has a first opening and a first accommodating chamber connected to the first opening. The first accommodating chamber is used to store electrolyte. The cross-sectional area of ​​the conductive members 3 gradually increases in the vertical upward direction. The several conductive members 3 are electrically connected to the motor to be tested and are connected to the support plate 4. The lifting mechanism is used to drive the support plate 4 to move vertically downward so that the several conductive members 3 extend into the electrolyte. The cooling box 9 is disposed on the base 1 and has a second opening and a second accommodating chamber connected to the second opening. The load box 2 is placed in the second accommodating chamber. The outer wall of the load box 2 and the inner wall of the second accommodating chamber are spaced apart to form a cooling channel for circulating coolant. The cooling box 9 also has a water outlet 17 and a water inlet 18, and the cooling channel connects the water outlet 17 and the water inlet 18. Specifically, the conductive members 3 are conical. With such an arrangement, during the actual motor power feeding test, the electrolyte will undergo an electrochemical reaction to form ions. These ions will move in a direction under the action of the electric field to form an electric current, thereby forming a load for the motor under test. The lifting mechanism drives the support plate 4 to move up and down in the vertical direction, and then adjusts the contact area between the control conductive member 3 and the electrolyte to form different loads, thereby meeting the power feeding test requirements of motors with different span design parameters, so as to complete the required speed, torque, current and related tests. It has strong versatility and effectively improves the efficiency of the motor power feeding test. At the same time, the coolant circulating in the cooling channel accelerates the circulation cooling of the outer wall of the load box 2 to avoid local overheating during the test process, and the cooling effect is good.

[0037] Specifically, the electrolyte is a sodium chloride solution, and the sodium chloride in the sodium chloride solution undergoes an electrochemical reaction and is ionized into sodium ions and chloride ions. Of course, in other embodiments, the electrolyte can also be set according to actual needs, and no further limitation is made here.

[0038] Specifically, the following scheme is exemplified in this embodiment: the lifting mechanism includes a screw 5, a fixed rod 6 and a driving member, a first fixed ear 7 and a second fixed ear 8 are respectively protruded on both sides of the support plate 4, the fixed rod 6 is arranged on the base 1, and the fixed rod 6 and the first fixed ear 7 slide together in the vertical direction, the screw 5 is rotatably connected to the base 1, and the screw 5 is threadedly connected to the second fixed ear 8, and the drive motor can drive the screw 5 to rotate to drive the support plate 4 to move vertically downward, so that the plurality of conductive members 3 extend into the electrolyte. In this way, the fixed rod 6 and the screw 5 provide support for the support plate 4 at the same time to ensure its stability. During the feeding test, the screw 5 can be driven to rotate by the driving member to realize the support plate 4 moving up and down along the fixed rod, thereby adjusting the depth of the conductive member 3 extending into the electrolyte (i.e., the contact area between the conductive member 3 and the electrolyte), thereby forming different loads for the motor under test.

[0039] Furthermore, in order to facilitate the addition and discharge of electrolyte into the first accommodating chamber, the motor feeding test device also includes a water addition pipe 19, an overflow pipe 20 and a drain pipe 21. The water addition pipe 19, the overflow pipe 20 and the drain pipe 21 are all detachable and connected to the first accommodating chamber. The water addition pipe 19 is arranged upwardly and is used to add sodium chloride solution to the first accommodating chamber. The drain pipe 21 is arranged downwardly and is used to discharge the sodium chloride solution after the test is completed. The overflow pipe 20 is arranged between the water addition pipe 19 and the drain pipe 21 and is used to prevent excessive sodium chloride solution in the first accommodating chamber.

[0040] Optionally, in order to facilitate the electrical connection of several conductive parts 3 and ensure smooth transmission of electrical energy, the motor feeding test device also includes several conductive blocks 10 and several wires 11, the several conductive blocks 10 are electrically connected to the several conductive parts 3 in a one-to-one correspondence, the several wires 11 are arranged in a one-to-one correspondence with the several conductive blocks 10, and the wires 11 are electrically connected between the motor to be tested and the conductive blocks 10.

[0041] Optionally, to prevent cross-entanglement between the wires 11 during the power feeding test, the motor power feeding test device further includes a connecting plate 12, with a first mounting ear 13 and a second mounting ear 14 protruding from either side of the connecting plate 12. The first mounting ear 13 is connected to the fixing rod 6, and the screw 5 is rotatably connected to the second mounting ear 14. A plurality of conductive blocks 10 are disposed on the support plate 4, one end of the wire 11 is electrically connected to the conductive block 10, and the other end of the wire 11 passes through the connecting plate 12 and is electrically connected to the motor under test. Furthermore, the connecting plate 12 and the support plate 4 are both made of epoxy insulating material, and there are three wires 11, which are electrically connected to the three-phase power lines of the motor under test.

[0042] Specifically, this embodiment exemplifies the following solution: Wire 11 includes a connecting portion 111 and a telescopic portion 112. Telescopic portion 112 is spiral-shaped and abuts between conductive block 10 and connecting plate 12. Connecting portion 111 is located on connecting plate 12 and connects between telescopic portion 112 and the motor under test. This arrangement allows spiral-shaped telescopic portion 112 to provide a certain degree of cushioning during the vertical movement of support plate 4 and prevents wire 11 from becoming tangled.

[0043] Optionally, the fixing rod 6 is arranged in a vertical direction, and the bottom end of the fixing rod 6 extends downward from the base 1. A first slot 15 and a second slot are respectively provided at both ends of the fixing rod 6. The first slot 15 is located at the top and the second slot is located at the bottom. The fixing rod 6 also has a pipe connecting the first slot 15 and the second slot. Several wires 11 pass through the first slot 15 and the pipe in sequence and extend out of the second slot.

[0044] Optionally, to enhance overall connection stability and further prevent external environmental contamination of the sodium chloride solution, the motor feed test device further includes a protective cover and support 16. The protective cover is mounted on the base 1, the top of the fixing rod 6 is fixedly connected to the protective cover, and the support 16 is fixedly connected between the second mounting ear 14 and the protective cover. Furthermore, to prevent short circuits and safety risks caused by foreign matter, the protective cover is constructed of five panels fixedly connected to each other.

[0045] In this embodiment, in order to better support the rotation of the screw 5, reduce the friction coefficient during its movement, and ensure the rotation accuracy, the motor feeding test device also includes a first bearing and a second bearing. The outer ring of the first bearing is fixedly connected to the support 16, and the inner ring of the first bearing is fixedly connected to the screw 5. The outer ring of the second bearing is fixedly connected to the base 1, and the inner ring of the second bearing is fixedly connected to the screw 5.

[0046] Optionally, the support plate 4 includes a first support portion 41 and a second support portion 42. The first support portion 41 is connected to the bottom of the second support portion 42. The first support portion 41 cooperates with the load box 2 and can block the first opening. The second support portion 42 cooperates with the cooling box 9 and can block the second opening. The first fixing ears 7 and the second fixing ears 8 are respectively protruding from either side of the second support portion 42. The length of the conductive member 3 is no greater than the depth of the first accommodating cavity. This arrangement allows the first and second openings to be blocked simultaneously during idle intervals during power feeding tests, preventing contamination of the coolant and sodium chloride solution.

[0047] Optionally, in order to prevent the load box 2 from being charged due to the electric field during the power feeding test, the inner wall of the first accommodating cavity is covered with an insulating material.

[0048] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A motor feeding test device, characterized in that: include: Base (1); A load box (2), the load box (2) being provided with a first opening and a first accommodating cavity communicating with the first opening, wherein the first accommodating cavity is used for storing electrolyte; A plurality of conductive members (3), wherein the cross-sectional area of ​​the conductive members (3) gradually increases in a vertically upward direction, and the plurality of conductive members (3) are all electrically connected to the motor to be tested; A support plate (4) and a lifting mechanism, wherein the plurality of conductive members (3) are connected to the support plate (4), and the lifting mechanism is capable of driving the support plate (4) to move vertically downward so that the plurality of conductive members (3) extend into the electrolyte; A cooling box (9) is provided on the base (1), the cooling box (9) is provided with a second opening and a second accommodating cavity connected to the second opening, the load box (2) is placed in the second accommodating cavity, the outer wall of the load box (2) and the inner wall of the second accommodating cavity are spaced apart to form a cooling channel, and the cooling channel is used to circulate a cooling liquid.

2. The motor feeding test device according to claim 1, characterized in that: The lifting mechanism comprises a screw rod (5), a fixing rod (6) and a driving member. A first fixing ear (7) and a second fixing ear (8) are respectively provided on both sides of the support plate (4). The fixing rod (6) is arranged on the base (1), and the fixing rod (6) and the first fixing ear (7) are slidably matched in the vertical direction. The screw rod (5) is rotatably connected to the base (1), and the screw rod (5) and the second fixing ear (8) are threadedly connected. The driving member can drive the screw rod (5) to rotate, so as to drive the support plate (4) to move vertically downward, so that the plurality of the conductive members (3) extend into the electrolyte.

3. The motor feeding test device according to claim 2, characterized in that: The motor feeding test device further comprises a plurality of conductive blocks (10) and a plurality of conductive wires (11), wherein the plurality of conductive blocks (10) are electrically connected to the plurality of conductive members (3) in a one-to-one correspondence, and the plurality of conductive wires (11) are arranged in a one-to-one correspondence to the plurality of conductive blocks (10), and the conductive wires (11) are electrically connected between the motor to be tested and the conductive blocks (10).

4. The motor feeding test device according to claim 3, characterized in that: The motor feeding test device also includes a connecting plate (12), and a first mounting ear (13) and a second mounting ear (14) are respectively protruded on both sides of the connecting plate (12), the first mounting ear (13) is connected to the fixing rod (6), and the screw rod (5) is rotatably connected to the second mounting ear (14), and a plurality of conductive blocks (10) are arranged on the support plate (4), one end of the conductive wire (11) is electrically connected to the conductive block (10), and the other end of the conductive wire (11) passes through the connecting plate (12) and is electrically connected to the motor to be tested.

5. The motor feeding test device according to claim 4, characterized in that: The wire (11) comprises a connecting portion (111) and a telescopic portion (112); the telescopic portion (112) is spiral-shaped and abuts between the conductive block (10) and the connecting plate (12); the connecting portion (111) is located on the connecting plate (12) and is connected between the telescopic portion (112) and the motor to be tested.

6. The motor feeding test device according to claim 4, characterized in that: The fixing rod (6) is provided with a first notch (15) and a second notch at both ends thereof. The fixing rod (6) is also provided with a pipe connecting the first notch (15) and the second notch. The plurality of wires (11) pass through the first notch (15) and the pipe in sequence and extend out of the second notch.

7. The motor feeding test device according to claim 4, characterized in that: The motor power feeding test device further comprises a protective cover and a support (16), wherein the protective cover is arranged on the base (1), the fixing rod (6) is connected to the protective cover, and the support (16) is fixedly connected between the second mounting ear (14) and the protective cover.

8. The motor feeding test device according to claim 7, characterized in that: The motor power feeding test device further includes a first bearing and a second bearing, wherein the outer ring of the first bearing is fixedly connected to the pillar (16), the inner ring of the first bearing is fixedly connected to the screw (5), the outer ring of the second bearing is fixedly connected to the base (1), and the inner ring of the second bearing is fixedly connected to the screw (5).

9. The motor feeding test device according to any one of claims 1 to 8, characterized in that: The support plate (4) includes a first support portion (41) and a second support portion (42), wherein the first support portion (41) is connected to the bottom of the second support portion (42), the first support portion (41) cooperates with the load box (2) and is capable of sealing the first opening, and the second support portion (42) cooperates with the cooling box (9) and is capable of sealing the second opening, and the length of the conductive member (3) is not greater than the depth of the first accommodating cavity.

10. The motor feeding test device according to any one of claims 1 to 8, characterized in that: The inner wall of the first accommodating cavity is covered with insulating material.

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