A low-voltage servo motor with high torque output

Abstract

The utility model relates to low pressure servo motor technical field especially a kind of low pressure servo motor of output high torque, including motor body, motor body is equipped with machine shell, the side wall of machine shell is equipped with pedestal, the top of machine shell is equipped with anti-collision cover, anti-collision cover is equipped with auxiliary guard and connecting strip, connecting strip is equipped with plug shaft, shaft slot is set up on pedestal, locking pin is set up on pedestal, anti-wear and ageing layer is equipped on anti-collision cover and auxiliary guard, cap handle and anti-loosening bullet are equipped on locking pin, first clamping groove and second clamping groove are set up on plug shaft, and row hole is set up on anti-collision cover. Can be overall effective comprehensive protection cover to encoder and driver, ensure the normal work of low pressure servo motor of output high torque, improve the use flexibility of anti-collision cover on low pressure servo motor of output high torque, the heat generated when encoder and driver work can be extracted from bottom to top and discharged.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage servo motor technology, and in particular to a low-voltage servo motor with high output torque. Background Technology

[0002] A low-voltage servo motor is a precision position (or speed) control actuator. Among them, the high-torque low-voltage servo motor is a special type of low-voltage servo motor, which is widely used in robotics, medical devices, aerospace and military industries, automotive industry and other fields.

[0003] A low-voltage servo motor with high output torque generally consists of a motor body (permanent magnet servo motor), an encoder, and a driver. The permanent magnet servo motor generally consists of a housing, a front cover, a rear cover, and a reducer. The housing contains a stator, rotor, and main shaft. The stator, made of laminated silicon steel sheets, is fixedly mounted on the inner wall of the housing. Winding slots are formed on the stator, and coils are wound around these slots to form windings. When current flows through these windings, a magnetic field is generated. The rotor is positioned on the main shaft and is suspended in the central cavity of the stator by bearings at both ends, allowing it to rotate freely.

[0004] The working principle of a low-voltage servo motor with high output torque is a typical closed-loop control process. The encoder detects the actual position and speed of the rotor in real time with high precision and feeds this data back to the driver. When the stator windings are energized, a magnetic field is generated. By energizing these windings in a specific sequence, a rotating magnetic field can be formed inside the stator. The driver sends a certain number of pulse commands, requiring the motor shaft to rotate to a certain target position. During the rotation of the motor shaft, the rotational force is transmitted to the reducer. The reducer converts the high-speed, low-torque rotation into low-speed, high-torque rotation and outputs it to drive the load. The encoder continuously monitors the actual rotation of the motor and reports it to the driver in real time. This is a current technology.

[0005] Currently, the encoders on existing high-torque low-voltage servo motors are generally mounted on the back cover, while the drivers are generally mounted on the top of the housing. Since both the encoder and driver are precision devices, if they are damaged by external impacts, it will affect the normal operation of the high-torque low-voltage servo motor.

[0006] To address this, we designed a low-voltage servo motor with high output torque for encoders and drivers designed to prevent impact damage from foreign objects, meeting the needs of practical applications. Utility Model Content

[0007] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a low-voltage servo motor with high output torque.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] Design a low-voltage servo motor with high output torque, including a motor body, a housing on the motor body, a heat dissipation slot and a mounting plate on the housing, an encoder at the right rear end of the housing, a driver at the upper right end of the housing, a fixed base on the side wall of the housing, a crash shield on the top of the housing, a secondary protective plate and a connecting strip on the crash shield, a shaft insert on the connecting strip, a shaft groove on the fixed base, a locking pin on the fixed base, and a wear-resistant and anti-aging layer on both the crash shield and the secondary protective plate.

[0010] The locking pin is provided with a cap and an anti-loosening spring, and the insert shaft is provided with a first slot and a second slot.

[0011] The anti-collision cover has drainage holes, and a cooling fan is provided at the top of the anti-collision cover. The cooling fan is equipped with screws.

[0012] In detail, the crash shield is a bent shield-shaped structure, and the secondary protective plates are two in number and symmetrically arranged at the lower end of the crash shield.

[0013] In detail, the fixed base and the connecting strip are a set, and there are two sets arranged symmetrically in total. The insert shaft is rotatably set in the shaft groove.

[0014] In detail, the circumferential angle between the first card slot and the second card slot is ninety degrees.

[0015] In detail, the locking pin is threadedly connected to the fixed seat, the cap handle is located at the right end of the locking pin, and the anti-loosening spring is located at the left end of the locking pin.

[0016] In detail, the wear-resistant and anti-aging layer is uniformly coated along the outer wall surface of the anti-collision cover and the sub-protective plate.

[0017] In detail, the drainage holes are located at the top of the anti-collision cover, and the cooling fan is fixed to the top of the anti-collision cover by screws.

[0018] In detail, the upper left side of the anti-collision cover has an opening slot, which is a rectangular strip-shaped inner groove structure.

[0019] The design scheme proposed in this utility model has the following beneficial effects in application:

[0020] 1. This utility model provides a fixed base with shaft groove and locking pin on the housing, and a connecting strip with insert shaft and anti-collision cover. Then, a secondary protective plate is set on the anti-collision cover. Before using the motor body, the anti-collision cover in the open state can be rotated 90 degrees and locked in place. This can effectively and comprehensively protect the encoder and driver, preventing external objects from directly colliding with the encoder and driver during the use of the motor body and causing damage. This ensures the normal operation of the low-voltage servo motor with high output torque.

[0021] 2. By setting a first slot and a second slot on the insert shaft, if it is necessary to input commands through a preset button on the encoder, the anti-collision cover can be rotated open and positioned to expose the encoder and perform command input operations, which further improves the flexibility of using the anti-collision cover on the low-voltage servo motor with high output torque.

[0022] 3. This utility model opens holes in the anti-collision cover and installs cooling fans at the holes. When the anti-collision cover completely protects the encoder and driver, the cooling fans at the top can draw away and dissipate the heat generated by the encoder and driver during operation from bottom to top. Attached Figure Description

[0023] Figure 1 This is an exploded three-dimensional schematic diagram of the anti-collision cover and cooling fan of this utility model in their uninstalled state;

[0024] Figure 2 This is a three-dimensional schematic diagram of the anti-collision cover and cooling fan of this utility model in the installed state.

[0025] Figure 3 For the present utility model Figure 1 A three-dimensional schematic diagram of the center anti-collision shield from below;

[0026] Figure 4 For the present utility model Figure 2 A first-person perspective 3D illustration of the central anti-collision shield in its rotated and opened state;

[0027] Figure 5 For the present utility model Figure 4 A second-view 3D diagram of the central anti-collision shield in its rotated and opened state;

[0028] Figure 6 For the present utility model Figure 3 A frontal perspective view of the central anti-collision shield.

[0029] In the diagram: 1 Motor body; 11 Housing; 12 Heat dissipation slot; 13 Mounting plate; 14 Encoder; 15 Driver; 2 Mounting base; 21 Shaft groove; 3 Locking pin; 31 Cap handle; 32 Anti-loosening spring; 4 Anti-collision cover; 41 Secondary protective plate; 42 Row holes; 43 Opening slot; 5 Wear-resistant and anti-aging layer; 6 Connecting strip; 7 Insert shaft; 71 First slot; 72 Second slot; 8 Cooling fan; 81 Screw. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figures 1-6 A low-voltage servo motor with high output torque includes a motor body 1, a housing 11 on the motor body 1, a heat dissipation groove 12 and a mounting plate 13 on the housing 11, an encoder 14 at the right tail end of the housing 11, a driver 15 at the upper right end of the housing 11, a fixed base 2 on the side wall of the housing 11, a crash shield 4 on the top of the housing 11, a secondary protective plate 41 and a connecting strip 6 on the crash shield 4, a shaft insert 7 on the connecting strip 6, a shaft groove 21 on the fixed base 2, a locking pin 3 on the fixed base 2, and a wear-resistant and anti-aging layer 5 on both the crash shield 4 and the secondary protective plate 41.

[0032] The locking pin 3 is provided with a cap handle 31 and an anti-loosening bullet 32, and the insert shaft 7 is provided with a first slot 71 and a second slot 72.

[0033] The anti-collision cover 4 has a drainage hole 42, and the top of the anti-collision cover 4 is equipped with a heat dissipation fan 8, and the heat dissipation fan 8 is equipped with a screw 81.

[0034] The motor body 1, housing 11, heat dissipation groove 12, mounting plate 13, encoder 14, and driver 15 described in this patent are all related structures of a low-voltage servo motor with high output torque, which are existing technologies. Some existing structures are not drawn or labeled, so there is no need to elaborate.

[0035] The base 2, locking pin 3, cap handle 31, connecting strip 6, insert shaft 7, and screw 81 described in this patent are all made of plastic steel and can be firmly bonded and fixed with epoxy resin, making them wear-resistant and durable.

[0036] It should be further explained that the overall structure of the anti-collision cover 4 is a bent cover-shaped structure. There are two auxiliary guard plates 41 symmetrically arranged at the lower end of the anti-collision cover 4. Both the anti-collision cover 4 and the auxiliary guard plates 41 are made of PVC material. The PVC material structure is transparent and impact-resistant, and the working status of the encoder 14 and the driver 15 can be directly seen through the anti-collision cover 4 and the auxiliary guard plates 41.

[0037] It should be further noted that the base 2 and the connecting strip 6 are a set, and there are two sets arranged symmetrically. The insert shaft 7 is rotatably set in the shaft groove 21, which improves the rotational limiting stability of the anti-collision cover 4.

[0038] It should be further noted that the circumferential arrangement angle between the first slot 71 and the second slot 72 is ninety degrees. (See reference...) Figure 2 and Figure 6 When the bumper cover 4 is rotated 90 degrees to the left and stopped, the second slot 72 will align with the locking pin 3, thus achieving the snap-fit ​​positioning effect of the bumper cover 4 in the later stage.

[0039] It should be further explained that the locking pin 3 is threadedly connected to the base 2. When the locking pin 3 exits the first slot 71 or the second slot 72, the locking pin 3 will still be threadedly connected to the preset screw hole on the base 2 to prevent the locking pin 3 from being lost.

[0040] The cap handle 31 is located at the right end of the locking screw 3. Six arc-shaped grooves are arranged around the circumference of the cap handle 31, which can be easily rotated by inserting a finger.

[0041] The anti-loosening bullet 32 ​​is located at the left end of the locking pin 3. The anti-loosening bullet 32 ​​is made of silicone rubber, which is wear-resistant and highly elastic. It has a cylindrical structure. When the anti-loosening bullet 32 ​​is squeezed into the first slot 71 or the second slot 72, the anti-loosening bullet 32 ​​is squeezed and generates a lateral rebound force. This lateral rebound force acts on the locking pin 3, which improves its anti-loosening effect.

[0042] It should be further noted that the wear-resistant and anti-aging layer 5 is uniformly coated along the outer wall surface of the crash shield 4 and the sub-protective plate 41. The wear-resistant and anti-aging layer 5 is a PVDF fluorocarbon resin structural layer with a thickness of thirty to forty micrometers. The PVDF fluorocarbon resin structural layer has excellent wear resistance, as well as excellent UV resistance, chemical corrosion resistance and self-cleaning properties. It is bonded to the outer wall surface of the crash shield 4 and the sub-protective plate 41 with epoxy resin adhesive.

[0043] It should be further explained that the hole 42 is opened at the top of the anti-collision cover 4, and the cooling fan 8 is installed and fixed at the top of the anti-collision cover 4 by screws 81. There is a preset screw groove (not shown) at the top of the anti-collision cover 4. The screw 81 passes vertically through the outer shell of the cooling fan 8 and is threaded and locked with the preset screw groove, so as to achieve the installation effect of the cooling fan 8.

[0044] The cooling fan 8 is a commonly used axial fan, which is quiet, has high air extraction and heat dissipation efficiency, and is durable. At the same time, dust filters (existing technology, not shown) are pre-installed at the bottom and top of the cooling fan 8 to prevent external dust from entering the cooling fan 8.

[0045] It should be further noted that the upper left side of the crash shield 4 has an opening slot 43, which is a rectangular strip-shaped inner groove structure. (See reference...) Figure 4 and Figure 5 At this time, the anti-collision cover 4 is already in the rotated open state, and the opening slot 43 provided at this time can prevent squeezing and collision with the housing 11.

[0046] Work method: See Figure 4 Before using the motor body 1, first rotate the locking pin 3 counterclockwise to disengage it from the second slot 72, then stop rotating the locking pin 3. Next, rotate the open bumper cover 4 90 degrees to the right until the locking pin 3 aligns with the first slot 71. Then, rotate the locking pin 3 clockwise. Through the threaded transmission with the preset screw hole on the base 2, the locking pin 3 will rotate clockwise and engage with the first slot 71. Stop rotating the locking pin 3. At this point, refer to... Figure 2 The anti-collision cover 4 and the auxiliary protective plate 41 have effectively and comprehensively protected the encoder 14 and the driver 15, preventing external objects from directly colliding with the encoder 14 and the driver 15 and causing damage during the use of the motor body 1, thereby ensuring the normal operation of the low-voltage servo motor with high output torque.

[0047] Furthermore, if you need to input commands using the preset buttons on encoder 14, please refer to... Figure 2 and Figure 6 Rotate the cap handle 31 counterclockwise, causing the locking screw 3 to rotate counterclockwise and disengage from the first slot 71. Stop rotating the cap handle 31, then rotate the bumper cover 4 90 degrees to the left and stop. (See reference) Figure 4 Then, rotate the cap handle 31 clockwise to drive the locking pin 3 into the second slot 72, which can lock and position the anti-collision cover 4. At this time, the encoder 14 can be exposed and the command input operation can be performed (the command input operation is the existing technology), which further improves the flexibility of using the anti-collision cover 4 on the low-voltage servo motor with high output torque.

[0048] Additionally, when the anti-collision cover 4 completely protects the encoder 14 and the driver 15, the cooling fan 8 can be connected to the preset power supply line of the driver 15 via a corrugated flexible power cable to power the cooling fan 8. A switch is preset on the cooling fan 8; turning on the switch will start the cooling fan 8. At this time, refer to... Figure 2 The cooling fan 8 at the top can draw away and dissipate the heat generated by the encoder 14 and driver 15 from bottom to top during operation.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low-voltage servo motor with high output torque, comprising a motor body (1), characterized in that: The motor body (1) is provided with a housing (11), the housing (11) is provided with a heat dissipation groove (12) and a mounting plate (13), the right tail end of the housing (11) is provided with an encoder (14), the upper right end of the housing (11) is provided with a driver (15), the side wall of the housing (11) is provided with a fixed base (2), the top of the housing (11) is provided with a crash shield (4), the crash shield (4) is provided with a secondary protective plate (41) and a connecting strip (6), the connecting strip (6) is provided with a plug shaft (7), the fixed base (2) is provided with a shaft groove (21), the fixed base (2) is provided with a locking pin (3), and the crash shield (4) and the secondary protective plate (41) are both provided with a wear-resistant and anti-aging layer (5); The locking pin (3) is provided with a cap handle (31) and an anti-loosening bullet (32), and the insert shaft (7) is provided with a first slot (71) and a second slot (72).

2. The low-voltage servo motor with high output torque according to claim 1, characterized in that: The crash shield (4) is a bent shield-shaped structure, and the secondary guard plate (41) consists of two plates symmetrically located at the lower end of the crash shield (4).

3. A low-voltage servo motor with high output torque according to claim 1, characterized in that: The fixed base (2) and the connecting strip (6) are a set, and there are two sets arranged symmetrically. The insert shaft (7) is rotatably mounted in the shaft groove (21).

4. A low-voltage servo motor with high output torque according to claim 1, characterized in that: The circumferential angle between the first card slot (71) and the second card slot (72) is ninety degrees.

5. A low-voltage servo motor with high output torque according to claim 1, characterized in that: The locking pin (3) is threadedly connected to the base (2), the cap handle (31) is located at the right end of the locking pin (3), and the anti-loosening bullet (32) is located at the left end of the locking pin (3).

6. A low-voltage servo motor with high output torque according to claim 1, characterized in that: The wear-resistant and anti-aging layer (5) is uniformly coated along the outer wall surface of the anti-collision cover (4) and the sub-protective plate (41).

7. A low-voltage servo motor with high output torque according to claim 1, characterized in that: The anti-collision cover (4) has a drainage hole (42), and a heat dissipation fan (8) is provided at the top of the anti-collision cover (4). The heat dissipation fan (8) is provided with a screw (81).

8. A low-voltage servo motor with high output torque according to claim 7, characterized in that: The drain hole (42) is opened at the top of the anti-collision cover (4), and the cooling fan (8) is fixed to the top of the anti-collision cover (4) by screws (81).

9. A low-voltage servo motor with high output torque according to claim 1, characterized in that: The upper left side of the anti-collision cover (4) is provided with an opening groove (43), and the opening groove (43) is a rectangular strip-shaped inner groove structure.

Images