Multi-shaft transmission type motor driver capable of being flexibly combined and used

Abstract

The utility model relates to a multi-shaft transmission type motor driver capable of being flexibly combined for use, and the motor driver comprises a motor driver main body which comprises a supporting frame body, a first heat dissipation assembly, a second heat dissipation assembly, a first interface group, a second interface group, and a DC bus cabin. The first heat dissipation assembly is installed on the rear side of the supporting frame and comprises a heat dissipation fin plate, a first heat dissipation fan and an L-shaped support, and the second heat dissipation assembly is installed at the bottom in the supporting frame and comprises a second heat dissipation fan, a first interface set, a communication port, a control power input terminal and a second interface set. Comprising a feedback encoder interface, a safety torque turn-off terminal, a fan power supply terminal, a motor band-type brake terminal and a power electric energy input or variable frequency electric energy output terminal, a bus cabin cover is installed on the front side face of the direct current bus cabin, and the bus cabin cover is fixedly connected with the upper surface of the supporting frame through a locking piece. The utility model has the beneficial effects of good heat dissipation performance, reasonable interface layout, flexible combination, convenient maintenance and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor driver, in particular to a multi-axis transmission type motor driver which can be flexibly combined. BACKGROUND

[0002] In modern industrial automation, intelligent equipment manufacturing and new energy vehicles and many other fields, motors are widely used as core power components. Motor drivers play a crucial role, which is responsible for converting control signals into power signals and accurately controlling the operation of the motor to meet the power requirements under different working conditions.

[0003] Traditional multi-axis transmission type motor drivers often have many limitations. On the one hand, the heat dissipation design is poor. The motor driver will generate a lot of heat during operation. If it cannot be effectively dissipated in time, high temperature will affect the performance, stability and even shorten the service life of electronic components. For example, some drivers rely only on simple heat sinks for natural cooling, which has low heat dissipation efficiency and is prone to failure due to overheating during high-load operation. On the other hand, the interface layout is not reasonable. Various communication, control, power and feedback interfaces are scattered and not standardized, making the wiring complex and prone to errors when connecting the driver with external devices, increasing the difficulty and cost of system integration, and reducing the reliability of the equipment. In addition, the structure of the traditional multi-axis transmission type driver is fixed and single, and the specification combination is fixed, which is difficult to adapt to diversified application scenarios and cannot meet the flexible combination configuration under different power and function requirements, limiting its expansion application in complex systems.

[0004] In view of the above problems, it is urgent to develop a multi-axis transmission type motor driver which can be flexibly combined to meet the growing industrial demand. CONTENT OF THE UTILITY MODEL

[0005] The utility model mainly aims at the above-mentioned problems existing in the prior art, and provides a multi-axis transmission type motor driver which can be flexibly combined.

[0006] The purpose of the utility model is mainly realized through the following scheme:

[0007] A motor driver which can be flexibly combined, comprising a motor driver main body, the motor driver main body comprising a support frame body with a cavity inside and an opening at the back, further comprising:

[0008] A first heat dissipation assembly is installed at the back of the support frame body, comprising a heat dissipation fin plate, a first heat dissipation fan and an L-shaped bracket, the L-shaped bracket is symmetrically provided with two, the heat dissipation fin plate is installed between the two L-shaped brackets, and the first heat dissipation fan is installed below the heat dissipation fin plate;

[0009] A second heat dissipation assembly is installed at the inner bottom of the support frame body, comprising a second heat dissipation fan;

[0010] The first interface group comprises a communication port and a control power input terminal opened on the upper surface of the support frame;

[0011] The second interface group comprises a feedback encoder interface, a safety torque off terminal, a fan power supply terminal, a motor brake terminal and a power energy input or variable frequency energy output terminal opened on the lower surface of the support frame;

[0012] The DC bus cabin is installed on the rear side of the upper surface of the support frame, and the front side of the DC bus cabin is movably installed with a bus cabin cover, and the bus cabin cover is fixedly connected with the upper surface of the support frame through a locking piece.

[0013] As a preferred, the support frame comprises two left and right fixed frames, a front panel, a left side guard plate, a right side guard plate, an upper sealing plate and a lower sealing plate, the front panel is installed between the front sides of the two fixed frames, the left side guard plate is installed on the left fixed frame, the right side guard plate is installed on the right fixed frame, and the upper and lower sealing plates are installed between the upper and lower sides of the two fixed frames, respectively.

[0014] As a preferred, at least one key display plate is installed on the upper part of the front panel, a small cover plate corresponding to the number of key display plates is installed on the lower part of the front panel, and a display cover plate is movably connected to the position of the front panel corresponding to the key display plate.

[0015] As a preferred, at least one second cooling fan is provided, and is fixedly installed on the upper surface of the lower sealing plate, and a second cooling hole is opened on the lower sealing plate corresponding to the second cooling fan, and a third cooling hole is opened on the upper sealing plate corresponding to the second cooling fan.

[0016] As a preferred, a control board and an electric energy conversion board are installed in the support frame, the control board can control up to 4 electric energy conversion boards with a single MCU, and these electric energy conversion boards can be combined according to the specific needs of the terminal application scene: freely combined according to the required current specification and the required number, and the upper end of the electric energy conversion board is connected with a copper bar receiving plate penetrating through the upper sealing plate, the DC bus cabin cover is arranged on the copper bar receiving plate, and the DC bus cabin is provided with a fourth cooling hole and a brake resistor interface.

[0017] As a preferred, the locking piece comprises a locking plate and a locking bolt, the locking plate is in an L-shaped structure, one end of which is fixedly connected with the lower surface of the upper sealing plate, the other end of which is provided with a threaded hole opening out of the upper sealing plate, the lower part of the front side of the bus cabin cover is provided with a locking block, a through hole is opened on the locking block, and the locking bolt passes through the through hole and the threaded hole to realize the fixation of the bus cabin cover.

[0018] As preferred, the lower end of the electric energy conversion plate extends out of the lower sealing plate and is provided with the power electric energy input or variable frequency electric energy output terminal, and the lower sealing plate is provided with a protective cover plate covering the power electric energy input or variable frequency electric energy output terminal.

[0019] As preferred, the protective cover plate comprises a protective cover and a fixing plate, the upper side and the front side of the protective cover are both open, the upper end of the protective cover is mounted on the opening of the lower sealing plate, the fixing plate is mounted on the front side of the protective cover, and the bottom of the protective cover is provided with an interface.

[0020] As preferred, the first heat dissipation fan is provided with at least one and is mounted on the support plate, the two ends of the support plate are fixedly mounted on the inner wall of the L-shaped support, and the support plate is provided with a first heat dissipation hole at a position corresponding to the first heat dissipation fan.

[0021] As preferred, the motor driver can be used alone or in parallel combination.

[0022] In summary, compared with the prior art, the utility model has the following beneficial technical effects:

[0023] (1) The first heat dissipation assembly and the second heat dissipation assembly are arranged, a full-dimensional three-dimensional heat dissipation system is constructed, the heat dissipation fin plate is in large-area contact with a heat source, the first heat dissipation fan and the second heat dissipation fan respectively ventilate from the back and the bottom, cooperate with multiple heat dissipation holes, accelerate air flow, quickly dissipate the internal heat of the driver, effectively reduce the working temperature of the element, greatly improve the stability and reliability of the driver under high load and long time operation, prolong the service life, reduce the downtime caused by overheating, and improve the production efficiency.

[0024] (2) The utility model divides the interface into two groups of upper and lower combination, the first interface group is above the upper support frame body, which is convenient for docking with the control system, the second interface group is on the lower surface of the support frame body, which is conducive to connecting with the motor and the surrounding auxiliary equipment, simplifies the wiring process, reduces the cross winding of the cable, reduces the risk of electromagnetic interference, not only improves the convenience of system integration, but also improves the stability of electrical connection, reduces the signal transmission error, ensures the accurate control of the motor, and provides strong support for the construction of complex automation system.

[0025] (3) The utility model can be used alone or in parallel combination, meet the multiple needs from low power to high power, from simple control to complex cooperative control, in small equipment, a single driver can meet the basic power demand, for large production line, heavy machinery and other high-power application scene, can flexibly deploy power through parallel connection of multiple drivers, realize the optimal utilization of resources, reduce the equipment cost, enhance the system adaptability, provide one-stop solution for different levels of demand in the industrial field.

[0026] (4) The utility model discloses a support frame structure is set up, and each component part can be detachably replaced between, cooperate openable bus hatch, the terminal of protective cover plate and the display cover plate of convenient opening make that driver no matter is internal circuit board troubleshooting, high -voltage component maintenance or on -the -spot parameter adjustment can be easily realized, reduce maintenance time and difficulty, reduce the degree of dependence on professional technical personnel, improve the maintenance efficiency of equipment whole life cycle, save operation and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model;

[0028] Figure 2 It is another angle structural schematic diagram of the utility model;

[0029] Figure 3 It is the front view of the utility model;

[0030] Figure 4 It is the plan view of the utility model;

[0031] Figure 5 It is the bottom view of the utility model;

[0032] Figure 6 It is the exploded schematic diagram of the utility model;

[0033] Figure 7 It is the structural schematic diagram of protective cover plate in the utility model.

[0034] Reference signs: 1 - heat dissipation fin plate, 2 - first heat dissipation fan, 3 - L-shaped support, 4 - second heat dissipation fan, 5 - communication port, 6 - control power input terminal, 7 - feedback encoder interface, 8 - safety torque off terminal, 9 - fan power supply terminal, 10 - motor brake terminal, 11 - power energy input or variable frequency energy output terminal, 12 - direct current bus cabin, 13 - bus cabin cover, 14 - fixed frame, 15 - front panel, 16, left side guard plate, 17 - right side guard plate, 18 - upper seal plate, 19 - lower seal plate, 20 - key display board, 21 - small cover plate, 22 - display cover plate, 23 - second heat dissipation hole, 24 - third heat dissipation hole, 25 - control board, 26 - electric energy conversion board, 27 - copper bar receiving plate, 28 - fourth heat dissipation hole, 29 - brake resistance interface, 30 - locking plate, 31 - locking bolt, 32 - locking block, 33 - protective cover, 34 - fixed plate, 35 - support plate, 36 - first heat dissipation hole. DETAILED DESCRIPTION

[0035] The technical scheme of the utility model will be further specifically explained below by means of specific embodiments and in conjunction with the drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of modification and / or change made to the utility model will fall within the scope of protection of the utility model.

[0036] Embodiment 1

[0037] As shown in Figure 1 , 3 , the utility model discloses a technical scheme, a multi-shaft transmission type motor driver that can be used flexibly in combination, comprising a motor driver main body, the motor driver main body comprises a support frame body with a cavity in the inside and an opening at the back side, and further comprising:

[0038] The first heat dissipation assembly is installed at the back side of the support frame body and comprises a heat dissipation fin plate 1, a first heat dissipation fan 2 and an L-shaped bracket 3, the L-shaped bracket 3 is used for fixing the driver to be installed in the electric control cabinet, the L-shaped bracket 3 is symmetrically provided with two, the heat dissipation fin plate 1 is installed between the two L-shaped brackets 3 through bolts, and the first heat dissipation fan 2 is installed below the heat dissipation fin plate 1, the heat dissipation fin plate 1 increases the heat dissipation area, the first heat dissipation fan 2 can accelerate the air flow and take away the heat on the heat dissipation fin plate 1, and the two work together to efficiently dissipate the heat generated in the driver;

[0039] The second heat dissipation assembly is installed at the inner bottom of the support frame body and comprises a second heat dissipation fan 4, further improves the heat dissipation effect, ensures that the temperature in the driver is uniform and stable, and avoids local overheating;

[0040] The first interface group, as shown in Figure 4 , comprises a communication port 5 and a control power input terminal 6 opened on the upper surface of the support frame body, is convenient for being connected with an upper control system, receives a control instruction and obtains a stable power supply, so that the driver can quickly respond to external operation; wherein the communication port 5 is connected with two kinds of communication cables of two different channels, when a plurality of motor drivers are used in combination, the communication port 5 of the first motor driver is opened and connected in series with the communication ports 5 of other motor drivers, a first channel obtains the instruction of the upper control system, a second channel carries out the state information interaction between modules, and the 24VDC control power input terminal 6 is used for accessing the control power supply of the driver;

[0041] The second interface group, as shown in Figure 5As shown, the second interface group includes a feedback encoder interface 7, a safety torque off terminal 8, a fan power supply terminal 9, a motor brake terminal 10 and a power energy input or variable frequency energy output terminal 11 opened on the lower surface of the support frame, the interfaces closely related to the motor are arranged on the lower surface, the wiring is simple and orderly, the line interference is reduced, and the modular design concept is met, facilitating direct connection with the motor; wherein the feedback encoder interface 7 is used for a cable interface for obtaining and analyzing position data from the motor angle / device position sensor, the safety torque off terminal 8 is used for receiving an externally input STO signal to realize physical locking of the PWM signal of the driver, the fan power supply terminal 9 is used for starting and stopping control of the first cooling fan 2 for air cooling of the driver cooling fin plate 1, the motor brake terminal 10 is used for attraction and release control of the motor brake, and the power energy input or variable frequency energy output terminal 11 is used for connecting a three-phase power supply, such as a three-phase 380V AC industry, in the rectifier module (also called the power supply module), and is used for connecting a three-phase power cable output to the motor in the inverter module (also called the shaft module).

[0042] The DC bus cabin 12 is fixedly installed on the upper surface of the support frame through bolts, and the front side of the DC bus cabin 12 is rotationally connected with a bus cabin cover 13 through a rotating shaft, and the bus cabin cover 13 is fixedly connected with the upper surface of the support frame through a locking member. The DC bus cabin 12 provides protection for the high-voltage DC part to avoid accidental contact by personnel, and the openable bus cabin cover 13 facilitates maintenance and repair of internal copper bars and other components.

[0043] It should be noted that the driver also has a third interface group (not shown in the figure) located inside the small cover plate 21, which includes a wired debugging communication port X4 and a digital input and output port X5, as well as a wireless debugging module communication interface X13 at the key display panel 20; the wired debugging communication port X4 is connected with a computer through a network cable to realize parameter adjustment, monitoring and other operations of the computer debugging software tool on the driver; the digital input and output port X5 can accept external digital input signals such as photoelectric sensors and proximity switches to execute response functions and output digital signals to external devices such as relays and valves; the wireless debugging communication port X13 can establish a wireless connection between the computer debugging software and the driver to realize the same parameter adjustment, monitoring and other operations as X4. When the X13 is inserted into the wireless debugging module, the X4 interface function is automatically closed, and when the X13 removes the wireless debugging module, the X4 interface function is automatically opened.

[0044] Specifically, the support frame body is composed of two left and right fixed frames 14, a front panel 15, a left side guard plate 16, a right side guard plate 17, an upper sealing plate 18 and a lower sealing plate 19. The front panel 15 is installed between the front sides of the two fixed frames 14. The left side guard plate 16 is installed on the left fixed frame 14. The right side guard plate 17 is installed on the right fixed frame 14. The upper sealing plate 18 and the lower sealing plate 19 are respectively installed between the upper sides and the lower sides of the two fixed frames 14. The above structures are detachably fixedly connected through bolts. On the one hand, it is convenient for assembly production, and also provides a stable support foundation for the installation and layout of internal components. Each plate has its own function, which is conducive to troubleshooting and maintenance replacement.

[0045] The motor driver can be used alone or in combination with multiple parallel combinations, greatly expanding its application scenarios. According to the power requirements and control complexity of different devices, higher power output and more precise collaborative control can be achieved through parallel connection to meet diversified industrial needs. When used in combination, the left side guard plate 16 or the right side guard plate 17 can be removed according to actual needs to facilitate wiring, and the connection and fixation are performed through the through holes in the side of the L-shaped support.

[0046] Embodiment 2:

[0047] As shown in Figure 1 , 3 , the utility model discloses another technical scheme, a multi-shaft transmission type motor driver that can be used flexibly in combination, which is different from embodiment 1 in that at least one key display plate 20 is installed on the upper part of the above-mentioned front panel 15. A small cover plate 21 corresponding in number to the key display plate 20 is installed on the lower part of the front panel 15. A display cover plate 22 is rotatably connected to the position corresponding to the key display plate 20 on the front panel 15 through a rotating shaft. Two key display plates 20 are provided in this embodiment. The display cover plate 22 plays a role in decoration and digital light transmission and is also used to cover the key display plate 20 to achieve a simple appearance visual effect when multiple drivers are installed side by side. The small cover plate 21 plays a role in decoration and protection of internal ports and pastes product information QR codes.

[0048] Embodiment 3:

[0049] As shown in Figure 1 , 6 , the utility model discloses another technical scheme, a multi-shaft transmission type motor driver that can be used flexibly in combination, which is different from embodiment 1 in that at least one second cooling fan 4 is provided. Two groups of second cooling fans 4 are provided in this embodiment, and each is fixedly installed on the upper surface of the lower sealing plate 19 through a bolt. A second cooling hole 23 is formed in the position on the lower sealing plate 19 corresponding to the second cooling fan 4. A third cooling hole 24 is formed in the position on the upper sealing plate 18 corresponding to the second cooling fan 4. The upper and lower corresponding cooling holes cooperate with the fan to ensure the smoothness of air circulation and optimize the cooling path to the greatest extent.

[0050] Specifically, as shown in Figure 2 The first heat dissipation fan 2 is provided with at least one, three groups in the embodiment, and is installed on the supporting plate 35 through bolts, both ends of the supporting plate 35 are fixedly installed on the inner wall of the L-shaped support 3 through bolts, and the first heat dissipation hole 36 is formed in the position corresponding to the first heat dissipation fan 2 on the supporting plate 35, the supporting plate 35 provides stable support for the first heat dissipation fan 2, the first heat dissipation hole 36 assists in ventilation and heat dissipation, and it is ensured that the wind blown by the fan can fully take away the heat of the heat dissipation fin plate 1.

[0051] Embodiment 4:

[0052] As shown in Figure 1 , 6 The utility model discloses another technical scheme, a kind of multi-shaft transmission type motor driver of flexible combination use, and it is different from embodiment 1, control board 25 and electric energy conversion board 26 are installed in above-mentioned support frame body through bolt, the upper end of electric energy conversion board 26 is connected with copper bar receiving plate 27 that passes out upper sealing plate 18, direct current busbar cabin 12 is covered on copper bar receiving plate 27, and fourth heat dissipation hole 28 and brake resistance interface 29 are formed in direct current busbar cabin 12, copper bar receiving plate 27 is used to access direct current busbar electric energy, control board 25 is the core control circuit board of motor drive control, all are weak signal, electric energy conversion board 26 is mainly AC-DC rectification part in rectification module (also called power module), for three-phase alternating current rectification into direct current, it is mainly DC-AC part in inverter module (also called axle module), for direct current is transformed into frequency variation alternating current, to drive control motor, brake resistance interface 29 is used to connect built-in or external brake resistance, realizes quick insertion replacement, fourth heat dissipation hole 28 assists heat dissipation.

[0053] Specifically, the locking member is composed of a locking plate 30 and a locking bolt 31, the locking plate 30 is in an L-shaped structure, one end of the locking plate 30 is fixedly connected to the lower surface of the upper sealing plate 18 through a bolt, the other end of the locking plate 30 is provided with a threaded hole after extending out of the upper sealing plate 18, the front lower part of the busbar cabin cover 13 is integrally provided with a locking block 32, a through hole is formed in the locking block 32, and the locking bolt 31 passes through the through hole and the threaded hole to fix the busbar cabin cover 13. This simple and reliable locking structure can not only ensure the tight closure of the busbar cabin cover 13 and prevent accidental opening, but also facilitate disassembly and maintenance of the interior of the direct current busbar cabin 12.

[0054] Specifically, a power electric energy input or variable frequency electric energy output terminal 11 is installed at the lower end of the electric energy conversion board 26 after extending out of the lower sealing plate 19, and a protective cover plate is installed on the lower sealing plate 19 through a bolt, the protective cover plate covers the power electric energy input or variable frequency electric energy output terminal, and specifically, as shown in Figure 7As shown, the protective cover plate is composed of a protective cover 33 and a fixing plate 34, the upper side and the front side of the protective cover 33 are both open, the upper end of the protective cover 33 is fixedly connected or bonded to the opening of the lower sealing plate 19 through bolts, the fixing plate 34 is installed on the front side of the protective cover 33 through bolts, and the bottom of the protective cover 33 is provided with an interface, the protective cover plate guarantees the stability and safety of electrical connection; it should be noted that the structure of the motor driver is protected in the application, the circuit connection of the electric energy conversion plate, the copper bar receiving plate, the control plate, the terminal interface and other electrical components in it is not within the protection scope of the application, so it will not be repeated here.

[0055] The multi-shaft transmission type motor driver which can be flexibly combined and used has wide application prospect and market value and can meet diversified demands in different application scenes.

[0056] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A multi-axis transmission type motor drive that can be used flexibly in combination, comprising a motor drive main body, characterized by, The motor driver body comprises a support frame with a cavity and an opening at the back, and further comprises: A first heat dissipation assembly is installed at the back of the support frame, comprising a heat dissipation fin plate (1), a first heat dissipation fan (2) and an L-shaped bracket (3). The L-shaped bracket (3) is symmetrically provided with two, the heat dissipation fin plate (1) is installed between the two L-shaped brackets (3), and the first heat dissipation fan (2) is installed below the heat dissipation fin plate (1); A second heat dissipation assembly is installed at the bottom of the support frame, comprising a second heat dissipation fan (4); A first interface group comprises a communication port (5) and a control power input terminal (6) opened on the upper surface of the support frame; A second interface group comprises a feedback encoder interface (7), a safety torque off terminal (8), a fan power supply terminal (9), a motor brake terminal (10) and a power energy input or variable frequency energy output terminal (11) opened on the lower surface of the support frame; A DC bus cabin (12) is installed on the upper surface of the support frame, and a bus cabin cover (13) is movably installed on the front side of the DC bus cabin (12), and the bus cabin cover (13) is fixedly connected with the upper surface of the support frame by a locking member.

2. The multi-axis motor drive of claim 1, wherein, The support frame comprises two left and right fixed frames (14), a front panel (15), a left side guard plate (16), a right side guard plate (17), an upper sealing plate (18) and a lower sealing plate (19). The front panel (15) is installed between the front sides of the two fixed frames (14). The left side guard plate (16) is installed on the left fixed frame (14). The right side guard plate (17) is installed on the right fixed frame (14). The upper sealing plate (18) and the lower sealing plate (19) are respectively installed between the upper sides and the lower sides of the two fixed frames (14).

3. The multi-axis motor drive of claim 2, wherein, At least one key display plate (20) is installed on the upper part of the front panel (15). A small cover plate (21) corresponding in number to the key display plate (20) is installed on the lower part of the front panel (15). A display cover plate (22) is movably connected to the position of the front panel (15) corresponding to the key display plate (20).

4. The multi-axis motor drive of claim 2, wherein, At least one second heat dissipation fan (4) is fixedly installed on the upper surface of the lower sealing plate (19). A second heat dissipation hole (23) is opened on the lower sealing plate (19) corresponding to the second heat dissipation fan (4). A third heat dissipation hole (24) is opened on the upper sealing plate (18) corresponding to the second heat dissipation fan (4).

5. The multi-axis motor drive of claim 2, wherein, A control board (25) and an electric energy conversion board (26) are installed in the support frame. The upper end of the electric energy conversion board (26) is connected with a copper bar receiving plate (27) penetrating through the upper sealing plate (18). The DC bus cabin (12) is covered on the copper bar receiving plate (27), and the DC bus cabin (12) is provided with a fourth heat dissipation hole (28) and a brake resistor interface (29).

6. The multi-axis motor drive of claim 5, wherein, The locking piece comprises a locking plate (30) and a locking bolt (31), the locking plate (30) is in L-shaped structure, one end of which is fixedly connected to the lower surface of the upper sealing plate (18), the other end of which extends out of the upper sealing plate (18) and is provided with a threaded hole, the front lower part of the busbar hatch cover (13) is provided with a locking block (32), the locking block (32) is provided with a through hole, and the locking bolt (31) passes through the through hole and the threaded hole to fix the busbar hatch cover (13).

7. The multi-axis motor drive of claim 6, wherein, The lower end of the electric energy conversion plate (26) extends out of the lower sealing plate (19) and is provided with the power electric energy input or variable frequency electric energy output terminal (11), and the lower sealing plate (19) is provided with a protective cover plate which covers the power electric energy input or variable frequency electric energy output terminal.

8. The multi-axis motor drive of claim 7, wherein, The protective cover plate comprises a protective cover (33) and a fixed plate (34), the upper side and the front side of the protective cover (33) are both open, the upper end of the protective cover (33) is installed at the opening of the lower sealing plate (19), and the fixed plate (34) is installed at the front side of the protective cover (33), and the bottom of the protective cover (33) is provided with an interface.

9. The multi-axis motor drive of claim 1, wherein, The first heat dissipation fan (2) is provided with at least one, and is installed on the supporting plate (35), both ends of the supporting plate (35) are fixedly installed on the inner wall of the L-shaped support (3), and the supporting plate (35) is provided with a first heat dissipation hole (36) at a position corresponding to the first heat dissipation fan (2).

10. The multi-axis motor drive of claim 1, wherein, The motor driver can be used alone or in parallel combination.

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