Servo drive test cabinet

Abstract

The present invention discloses a servo drive device test cabinet, including a cabinet, a shelf, a circulating fan and a heater. The cabinet has a test chamber and an air duct, and the air duct is connected to the test chamber; the shelf is arranged in the test chamber, and the shelf has multiple layers of bearing members arranged at intervals, and at least two layers of the multiple layers of the bearing members are used to install the servo drive device to be tested; the circulating fan is arranged on the air duct to make the airflow circulate between the air duct and the test chamber; the heater is arranged in the air duct to heat the airflow flowing through the air duct. The servo drive device test cabinet provided according to the embodiment of the present invention can realize batch testing and greatly improve the test efficiency; in addition, the heater and the circulating fan can be used to heat the airflow to realize the high and low temperature environment simulation in the test chamber, so that the test can be completed in high temperature, low temperature and other environments, meet the test environment requirements, and make the test effect better.

Description

Technical Field

[0001] The invention relates to the technical field of servo drive, and in particular to a servo drive device test cabinet. Background Art

[0002] A servo drive generally includes a servo motor, a servo controller and an encoder, and the servo controller is used to achieve precise control of the servo motor. Servo drives are widely used in automation equipment such as industrial robots and CNC machining centers.

[0003] For servo drive devices, performance tests are generally required before they leave the factory in high temperature, low temperature and other environments. In the related art, there is no test device that can effectively and reliably simulate the test environment for testing servo drive devices, so that the test effect of servo drive devices is poor and the test efficiency is low. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one object of the present invention is to provide a servo drive device test cabinet.

[0005] To achieve the above object, a servo drive device test cabinet according to an embodiment of the present invention includes:

[0006] A cabinet, wherein the cabinet has a test chamber and an air duct, and the air duct is connected to the test chamber;

[0007] A shelf, the shelf is arranged in the test chamber, and the shelf has multiple layers of bearing members arranged at intervals, at least two layers of the multiple layers of bearing members are used to install the servo drive device to be tested;

[0008] A circulating fan, which is arranged on the air duct and is used to circulate air between the air duct and the test chamber;

[0009] A heater is disposed in the air duct and is used to heat the airflow passing through the air duct.

[0010] According to the servo drive device test cabinet provided by the embodiment of the present invention, a shelf is provided in the test room of the cabinet, and the shelf has multiple layers of load-bearing members arranged at intervals, and the load-bearing members can be used to install the servo drive device to be tested. In this way, multiple layers of servo drive devices to be tested can be installed on the load-bearing members of the shelf, thereby realizing batch testing and greatly improving the test efficiency. In addition, the airflow can be heated by using a heater and a circulating fan to realize the simulation of high and low temperature environments in the test room. In this way, testing can be completed in high temperature, low temperature and other environments, meeting the test environment requirements and achieving better test results.

[0011] In addition, the servo drive device test cabinet according to the above embodiment of the present invention may also have the following additional technical features:

[0012] According to one embodiment of the present invention, it also includes:

[0013] An electromagnetic interference device, at least one layer of the multiple layers of the carrier is used to install the electromagnetic interference device, so as to generate electromagnetic interference to the servo drive device under test through the electromagnetic interference device.

[0014] According to an embodiment of the present invention, each layer of the electromagnetic interference device is located between two adjacent layers of the servo drive devices under test.

[0015] According to one embodiment of the present invention, it also includes:

[0016] An exhaust fan is arranged on the cabinet and communicated with the air duct, so as to discharge the air flow in the air duct to the outside of the cabinet.

[0017] According to one embodiment of the present invention, it also includes:

[0018] A temperature sensor, the temperature sensor is used to collect the temperature in the test chamber;

[0019] A controller is connected to the temperature sensor, the circulating fan, the heater and the exhaust fan by signals, and is used to control the circulating fan, the heater and the exhaust fan according to the temperature.

[0020] According to one embodiment of the present invention, it also includes:

[0021] A smoke sensor, the smoke sensor is connected to the controller signal and is used to collect the smoke concentration in the test room;

[0022] an alarm, the alarm being connected to the controller by signal;

[0023] The controller is also used to control the alarm to issue an alarm prompt according to the smoke concentration.

[0024] According to one embodiment of the present invention, the air duct comprises:

[0025] A top air duct section, the top air duct section is located at the top of the test chamber;

[0026] A left side air duct section, the left side air duct section is located on the left side of the test chamber, and the upper end of the left side air duct section is connected to one end of the top air duct section;

[0027] A right side air duct section, wherein the right side air duct section is located on the right side of the test chamber, and an upper end of the right side air duct section is connected to the other end of the top air duct section;

[0028] The left air duct section is provided with an air inlet hole for air flow into the test chamber, and the right air duct section is provided with an air return hole for air flow out of the test chamber;

[0029] The circulating fan, heater and exhaust fan are arranged in the top air duct section, and the heater is located between the circulating fan and the exhaust fan.

[0030] According to one embodiment of the present invention, the electromagnetic interference device includes a time delay relay and an AC contactor, the power supply end of the time delay relay is connected to the live wire and the neutral wire, and the delay contact of the time delay relay is connected to the coil of the AC contactor to control the coil of the AC contactor to continuously power on or off to generate electromagnetic waves.

[0031] According to one embodiment of the present invention, the coil of the AC contactor is suitable for being wound around the encoder signal line of the servo drive device under test.

[0032] According to an embodiment of the present invention, the cabinet has an observation window through which the test chamber can be seen.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0035] Figure 1 is a schematic structural diagram of a servo drive device test cabinet according to an embodiment of the present invention;

[0036] Figure 2 is a front view of a servo drive device test cabinet according to an embodiment of the present invention;

[0037] Figure 3 1 is a schematic diagram of the internal structure of the servo drive device test cabinet of an embodiment of the present invention when viewed from the front;

[0038] Figure 4 Schematic diagram of the internal structure of the servo drive device test cabinet of the embodiment of the present invention when viewed from the right;

[0039] Figure 5 is a schematic diagram of the internal structure of a test cabinet of a servo drive device according to an embodiment of the present invention when viewed from above;

[0040] Figure 6 2 is a schematic diagram of the structure of a middle shelf of a servo drive device test cabinet according to an embodiment of the present invention;

[0041] Figure 7 is a schematic diagram of the structure of an electromagnetic interference device in a test cabinet of a servo drive device according to an embodiment of the present invention;

[0042] Figure 8 It is an electrical diagram of an AC contactor and a time delay relay in an electromagnetic interference device in a test cabinet of a servo drive device according to an embodiment of the present invention.

[0043] Reference numerals:

[0044] Cabinet 10;

[0045] Door 101;

[0046] Observation window 1011;

[0047] Test room P10;

[0048] Air duct P11;

[0049] Top air duct section P111;

[0050] Left side air duct section P112;

[0051] Right air duct section P113;

[0052] Shelf 20;

[0053] Carrier 201;

[0054] Circulation fan 30;

[0055] Heater 40;

[0056] Electromagnetic interference device 50;

[0057] AC contactor 501;

[0058] Coil 5011;

[0059] Delay relay 502;

[0060] Exhaust fan 60;

[0061] A servo drive device 70 under test;

[0062] Servo controller 701;

[0063] Servo motor 702;

[0064] Encoder 703.

[0065] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0066] The embodiments of the present invention are described in detail below, and 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 be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0067] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “circumferential”, “radial”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0071] The servo drive device test cabinet according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0072] Reference Figures 1 to 6 As shown, the servo drive device test cabinet provided according to an embodiment of the present invention includes a cabinet body 10 , a shelf 20 , a circulation fan 30 and a heater 40 .

[0073] Specifically, the cabinet 10 has a test chamber P10 and an air duct P11, the air duct P11 is connected to the test chamber P10, and the airflow in the air duct P11 can flow into the test chamber P10. Preferably, the cabinet 10 can be made of stainless steel, and in order to improve the heat preservation effect of the cabinet 10, a heat preservation material layer, such as heat preservation rock wool, can be set on the cabinet wall of the cabinet 10.

[0074] The shelf 20 is arranged in the test chamber P10, and the shelf 20 has multiple layers of carriers 201 arranged at intervals, and at least two layers of the multiple layers of the carriers 201 are used to install the servo drive device 70 to be tested. Exemplarily, the multiple layers of carriers 201 are arranged at intervals from top to bottom, and at least two layers of the multiple layers of carriers 201 can be used to install the servo drive device 70 to be tested, and each layer can be installed with one or more servo drive devices 70 to be tested. Multiple servo drive devices 70 to be tested can be installed in sequence along the horizontal direction (left and right direction). Each servo drive device can include a servo motor 702 and a servo controller 701. Preferably, the servo controller 701 and the servo motor 702 can be arranged relative to each other front and back, and the servo motor 702 can be configured with an encoder 703.

[0075] The circulating fan 30 is arranged on the air duct P11 to circulate the air flow between the air duct P11 and the test chamber P10. The heater 40 is arranged in the air duct P11 to heat the air flow passing through the air duct P11. Preferably, the heater 40 can be an electric heater 40. That is to say, the air flow in the air duct P11 can be blown to the test chamber P10 through the circulating fan 30, and the air flow in the test chamber P10 can flow back to the air duct P11, thus forming a closed self-circulation (such as Figure 3 In addition, the heater 40 is disposed in the air duct P11. When the airflow passes through the heater 40, the airflow can be heated by the heater 40. Thus, when the airflow circulates in the air duct P11 and the test chamber P10, it can be continuously heated, thereby making the temperature in the test chamber P10 meet the test requirements.

[0076] According to the servo drive device test cabinet provided by the embodiment of the present invention, a shelf 20 is provided in the test chamber P10 of the cabinet body 10, and the shelf 20 has a plurality of carriers 201 arranged at intervals, and the carriers 201 can be used to install the servo drive device 70 to be tested. In this way, multiple layers of the servo drive device 70 to be tested can be installed on the carriers 201 of the shelf 20, thereby realizing batch testing and greatly improving the test efficiency; in addition, the heater 40 and the circulating fan 30 can be used to heat the airflow to realize the high and low temperature environment simulation in the test chamber P10, so that the test can be completed in high temperature, low temperature and other environments to meet the test environment requirements and achieve better test results.

[0077] Optionally, the bearing member 201 may be in a plate-shaped, rod-shaped, tubular or other structure. Figure 4 In the example, the carrier 201 includes a square steel extending in the horizontal direction and an L-shaped plate, and the servo motor 702 can be fixed on the square steel by a fixing assembly, for example, the fixing assembly includes a pressing plate, bolts and nuts, the bolts pass through the pressing plate and are locked with the nuts, and the pressing plate is used to press and fix the servo motor 702 on the square steel. The servo controller 701 is fixed on the L-shaped plate by fasteners such as screws.

[0078] Reference Figure 3 to Figure 4 and Figure 6 As shown, in one embodiment of the present invention, an electromagnetic interference device 50 is further included, and at least one layer of the multi-layer carrier 201 is used to install the electromagnetic interference device 50 so as to generate electromagnetic interference to the servo drive device 70 under test through the electromagnetic interference device 50.

[0079] That is, in this embodiment, an electromagnetic interference device 50 is configured in the test chamber P10, and the electromagnetic interference device 50 is installed on at least one layer of the carrier 201. The electromagnetic interference device 50 may be one or more, for example, Figure 6 In the example, a plurality of electromagnetic interference devices 50 are provided on a layer of carrier 201 corresponding to a plurality of servo drive devices 70 under test. When working, the plurality of electromagnetic interference devices 50 can generate electromagnetic waves, and utilize the electromagnetic waves to generate electromagnetic interference to the servo drive devices 70 under test, for example, to generate electromagnetic interference to the servo controller 701 and the encoder 703.

[0080] It should be noted that in the related art, no electromagnetic interference environment is conducted for the test of the servo drive device, so that the test environment of the servo drive device is different from the actual working environment, which leads to inaccurate test results. In this embodiment, by configuring an electromagnetic interference device 50 in the test chamber P10 and using the electromagnetic interference device 50 to simulate electromagnetic wave signals, the environment of the tested servo drive device 70 during the test process is closer to the actual real environment, thereby achieving more accurate and reliable test results.

[0081] Reference Figure 3 and Figure 6 As shown, in one embodiment of the present invention, each layer of the electromagnetic interference device 50 is located between two adjacent layers of the servo drive devices 70 to be tested. Figure 3 In the example, the carrier 201 has five layers, which are the first layer, the second layer, the third layer, the fourth layer and the fifth layer from bottom to top, wherein the first layer, the second layer, the fourth layer and the fifth layer of the carrier 201 are respectively installed with the servo drive devices 70 under test, and these servo drive devices may include servo motors 702 of different power sizes, and the third layer of the carrier 201 is installed with the electromagnetic interference device 50, so that the electromagnetic interference device 50 of the third layer can be located between the servo drive devices 70 under test on the first and second layers and the servo drive devices 70 under test on the fourth and fifth layers.

[0082] That is to say, in this embodiment, the electromagnetic interference device 50 is arranged between the servo drive devices 70 under test. In this way, the electromagnetic waves generated by the electromagnetic interference device 50 can cover the servo drive devices 70 under test in each layer, thereby interfering with the servo drive devices 70 under test in each layer, so that the servo drive devices 70 under test in each layer can be tested in an environment close to the real environment, ensuring that the test results of each servo drive device 70 under test are accurate and reliable.

[0083] Reference Figures 1 to 4 As shown, in one embodiment of the present invention, an exhaust fan 60 is further included. The exhaust fan 60 is disposed in the air duct P11 to exhaust the air flow in the air duct P11 to the outside of the cabinet 10 .

[0084] That is to say, by configuring the exhaust fan 60 on the cabinet 10, the exhaust fan 60 can be used to discharge the airflow in the air duct P11 to the outside of the cabinet 10. Generally, the exhaust fan 60 can be turned on when the temperature in the test room P10 is too high, and the exhaust fan 60 can be used to discharge the hot airflow in the test room P10 to the outside of the cabinet 10, thereby reducing the temperature in the test room P10 and preventing the test environment temperature of the servo drive device 70 under test from being too high.

[0085] In some embodiments of the present invention, a temperature sensor and a controller (not shown) are also included. The temperature sensor is used to collect the temperature in the test chamber P10; the controller is connected to the temperature sensor, the circulating fan 30, the heater 40 and the exhaust fan 60 by signal, and is used to control the circulating fan 30, the heater 40 and the exhaust fan 60 according to the temperature.

[0086] That is to say, a temperature sensor is set in the test chamber P10, and the temperature in the test chamber P10 is collected by the temperature sensor. The controller can control the circulation fan 30, the heater 40 and the exhaust fan 60 to be turned on or off according to the temperature. For example, when the collected temperature is lower than the first set temperature, the controller controls the circulation fan 30 and the heater 40 to be turned on, and the airflow is circulated in the air duct P11 and the test chamber P10 through the circulation fan 30. During the flow, the heater 40 is used for heating, thereby achieving temperature increase in the test chamber P10. When the collected temperature reaches the second set temperature (the second set temperature is greater than the first set temperature), the controller can control the heater 40 to stop and / or the exhaust fan 60 to start, so as to stop heating the airflow, and / or discharge the hot airflow in the test chamber P10 to the outside of the test chamber P10 through the exhaust fan 60, so as to reduce the temperature in the test chamber P10. Therefore, the temperature in the test chamber P10 can be controlled, so that the temperature position in the test chamber P10 is stabilized within a certain range, providing a reliable and stable test environment.

[0087] Optionally, a smoke sensor and an alarm (not shown) are further included, wherein the smoke sensor is connected to the controller signal to collect the smoke concentration in the test chamber P10; the alarm is connected to the controller signal. The controller is also used to control the alarm to issue an alarm prompt according to the smoke concentration.

[0088] That is to say, by setting a smoke sensor in the test room P10, the smoke sensor is used to detect the smoke concentration in the test room P10. If the smoke concentration exceeds the set concentration, the controller controls the alarm to issue an alarm prompt. In this way, the operator can be reminded to discover it in time and avoid fire and other problems.

[0089] Reference Figure 3 As shown, in one embodiment of the present invention, the air duct P11 includes a top air duct section P111, a left air duct section P112 and a right air duct section P113, wherein the top air duct section P111 is located at the top of the test chamber P10; the left air duct section P112 is located on the left side of the test chamber P10, and the upper end of the left air duct section P112 is connected to one end of the top air duct section P111; the right air duct section P113 is located on the right side of the test chamber P10, and the upper end of the right air duct section P113 is connected to the other end of the top air duct section P111.

[0090] The left air duct section P112 is provided with an air inlet hole for air flow into the test chamber P10, and the right air duct section P113 is provided with an air return hole for air flow out of the test chamber P10. The circulating fan 30, the heater 40 and the exhaust fan 60 are arranged in the top air duct section P111, and the heater 40 is located between the circulating fan 30 and the exhaust fan 60.

[0091] That is to say, in this embodiment, the air duct P11 is mainly connected by the top air duct section P111, the left air duct section P112 and the right air duct section P113 to form a U-shaped structure. The U-shaped air duct P11 surrounds the outside of the test chamber P10, and the left air duct section P112 blows air into the inside through the air inlet, and the right air duct section P113 leads the air flow out through the return air port, and the circulation fan 30 is arranged at the top air duct section P111, so that the air flow can form a better self-circulation flow. The heater 40 is arranged between the circulation fan 30 and the exhaust fan 60, which can ensure that the air flow is heated by the heater 40 before entering the circulation fan 30. The exhaust fan 60 is close to the right air duct section P113, and the air flow refluxed from the right air duct section P113 can be smoothly discharged to the outside of the test chamber P10 by the exhaust fan 60 when the exhaust fan 60 is turned on, so as to achieve a rapid cooling effect.

[0092] Reference Figure 3 to Figure 4 , Figures 6 to 8 As shown, in some embodiments of the present invention, the electromagnetic interference device 50 includes a time delay relay 502 and an AC contactor 501, the power supply end of the time delay relay 502 is connected to the live wire and the neutral wire, and the delay contact of the time delay relay 502 is connected to the coil 5011 of the AC contactor 501, so as to control the coil 5011 of the AC contactor 501 to continuously power on or off to generate electromagnetic waves.

[0093] During the test, the delay relay 502 controls the delay node to close through the delay control, thereby energizing the coil 5011 of the AC relay. By controlling the coil 5011 of the AC relay to be continuously energized and de-energized by the delay relay 502, electromagnetic waves can be generated around the coil 5011 of the AC relay, thereby implementing electromagnetic interference on the tested servo drive device 70, so as to simulate a test environment that is closer to the real environment and improve the accuracy and reliability of the test. In addition, the electromagnetic interference device 50 has a simple structure and is easy to install.

[0094] Advantageously, the coil 5011 of the AC contactor 501 is suitable for winding around the encoder 703 signal line of the servo drive device 70 under test. Thus, by winding the coil 5011 of the AC contactor 501 around the encoder 703 signal line of the servo motor 702, the purpose of increasing the electromagnetic interference intensity can be achieved.

[0095] Optionally, the cabinet 10 has an observation window 1011 through which the test chamber P10 can be viewed. Figure 1 In the example, the cabinet 10 has front and rear double doors 101 , and transparent observation windows 1011 are provided on the front and rear double doors 101 , so that it is convenient to observe the test status and process in the test room P10 .

[0096] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0097] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A servo drive device test cabinet, characterized in that: include: A cabinet, wherein the cabinet has a test chamber and an air duct, and the air duct is connected to the test chamber; A shelf, the shelf is arranged in the test chamber, and the shelf has multiple layers of bearing members arranged at intervals, at least two layers of the multiple layers of bearing members are used to install the servo drive device to be tested; A circulating fan, which is arranged on the air duct and is used to circulate air between the air duct and the test chamber; A heater, the heater being disposed in the air duct and being used for heating the airflow passing through the air duct; An electromagnetic interference device, at least one layer of the multiple layers of the carrier is used to install the electromagnetic interference device, so as to generate electromagnetic interference to the servo drive device under test through the electromagnetic interference device; The electromagnetic interference device of each layer is located between the servo drive devices under test of two adjacent layers; an exhaust fan, the exhaust fan being arranged on the cabinet and communicating with the air duct, and being used for exhausting the airflow in the air duct to the outside of the cabinet; A temperature sensor, the temperature sensor is used to collect the temperature in the test chamber; A controller is connected to the temperature sensor, the circulating fan, the heater and the exhaust fan by signals, and is used to control the circulating fan, the heater and the exhaust fan according to the temperature.

2. The servo drive device test cabinet according to claim 1, characterized in that: Also includes: A smoke sensor, the smoke sensor is connected to the controller signal and is used to collect the smoke concentration in the test room; an alarm, the alarm being connected to the controller by signal; The controller is also used to control the alarm to issue an alarm prompt according to the smoke concentration.

3. The servo drive device test cabinet according to claim 1, characterized in that: The air duct comprises: A top air duct section, the top air duct section is located at the top of the test chamber; A left side air duct section, the left side air duct section is located on the left side of the test chamber, and the upper end of the left side air duct section is connected to one end of the top air duct section; A right side air duct section, wherein the right side air duct section is located on the right side of the test chamber, and an upper end of the right side air duct section is connected to the other end of the top air duct section; The left air duct section is provided with an air inlet hole for air flow into the test chamber, and the right air duct section is provided with an air return hole for air flow out of the test chamber; The circulating fan, heater and exhaust fan are arranged in the top air duct section, and the heater is located between the circulating fan and the exhaust fan.

4. The servo drive device test cabinet according to claim 1, characterized in that: The electromagnetic interference device includes a time delay relay and an AC contactor, wherein the power supply end of the time delay relay is connected to the live wire and the neutral wire, and the delay contact of the time delay relay is connected to the coil of the AC contactor to control the coil of the AC contactor to continuously power on or off to generate electromagnetic waves.

5. The servo drive device test cabinet according to claim 4, characterized in that: The coil of the AC contactor is suitable for being wound on the encoder signal line of the servo drive device under test.

6. The servo drive device test cabinet according to claim 1, characterized in that: The cabinet has an observation window through which the test chamber can be seen.

Images