A servo driver protection device

Abstract

The utility model relates to servo driver technical field, especially a kind of servo driver protection device, including bottom plate, the both sides of bottom plate top surface are equipped with guide rail, and the sliding frame is jointly slidably installed between the two, the top of sliding frame is equipped with lower limit frame, and the four corners between the two are all provided with support spring.The utility model has the advantages that by setting sliding frame, servo driver body is installed between upper limit frame and lower limit frame, and servo driver body top corner is all equipped with buffer seat, support spring, tension spring, buffer seat and damper are used to block and absorb external vibration, impact conduction servo driver body, relative to the fastener fixed of traditional, the above structure can minimize the impact damage suffered by servo driver body, so as to realize the purpose of effectively protecting servo driver body, prevent it from being impacted and effectively solve the problems existing in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of servo drive technology, and in particular to a servo drive protection device. Background Technology

[0002] A servo drive is an electronic device used to precisely control the motion of a servo motor. It adjusts the position, speed, and torque of the motor in real time through a closed-loop feedback system (such as an encoder or resolver) to achieve high dynamic response and high-precision motion control. It is widely used in automation fields that require precise motion control, such as industrial automation, semiconductor manufacturing, logistics, and packaging.

[0003] During servo drive installation, wall-mounted, DIN rail-mounted, and rack-mounted installations are commonly used. However, all of these methods require flanges and fasteners for fixation. In environments with vibration or impact, this vibration or impact can be directly transmitted to the servo drive, easily leading to issues such as unsoldered internal components, poor contact of connectors, circuit board cracking, and loose mounting screws. This can cause a decrease in servo drive control accuracy or even system failure. Therefore, a servo drive protection device is proposed to address these problems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a servo drive protection device, which effectively solves the deficiencies of the prior art.

[0005] To achieve the above objectives, one embodiment of this utility model provides a servo drive protection device, including a base plate. Guide rails are mounted on both sides of the top surface of the base plate, and a sliding frame is slidably mounted between them. A lower limiting frame is mounted on the top of the sliding frame, and support springs are provided at the four corners between the two. Four dampers are mounted in the middle of the adjacent surfaces of the sliding frame and the lower limiting frame. An upper limiting frame is mounted on the top of the lower limiting frame, and a servo drive body is mounted between them. Buffer seats are provided at each of the eight corners of the servo drive body between the upper and lower limiting frames. Connecting rods are mounted on both sides of the middle of the sliding frame. Both connecting rods are bent upwards, and threaded posts are provided at their ends. Two adjusting nuts are threadedly connected to the outer walls of the two threaded posts. Tension springs are hooked between the tops of the two threaded posts and the upper limiting frame.

[0006] Preferably, in any of the above solutions, the base plate, sliding frame, lower limiting frame, and upper limiting frame all adopt a hollow structure. Stops are installed at both corners of the base plate to block the sliding frame. A pusher is installed at the end of the base plate away from the stoppers to clamp the sliding frame. This solution facilitates reducing the relative weight of the base plate, sliding frame, lower limiting frame, and upper limiting frame. The stoppers facilitate limiting the pushing position of the sliding frame. Simultaneously, the middle of the pusher is fixedly connected to the base plate by two hexagonal socket head cap screws, thereby facilitating position locking of the sliding frame and enabling operators to perform processing and on-site assembly.

[0007] Preferably, one of the above solutions is that a pull rod is installed at one end of the sliding frame near the push frame. The pull rod is inclined upward and has a T-shape. This solution provides a gripping position for the operator to push and pull the sliding frame, thereby facilitating installation and disassembly operations and improving operational convenience.

[0008] Preferably, in any of the above solutions, the lower limiting frame and the upper limiting frame have the same external dimensions and are fixedly connected by fasteners. Limiting tubes are installed at the four corners of the bottom surface of the lower limiting frame and the four corners of the top surface of the sliding frame. The eight limiting tubes are respectively connected to the two ends of the four support springs. In this solution, the limiting tubes provide installation positions for the four support springs. At the same time, they cooperate with two tension springs and four dampers to absorb vibration, reduce external impact, and effectively prevent resonance between the servo drive body and external vibrating components, ensuring the normal operation of the servo drive body.

[0009] Preferably, in any of the above solutions, reinforcing ribs are installed on the sides of both connecting rods, and the tops of both connecting rods are bent at obtuse angles. This solution provides structural strength to the two connecting rods, allowing the connecting rods to be pulled against the upper limiting frame by two tension springs, thereby limiting the servo drive body and preventing large-scale shaking of the servo drive body.

[0010] Preferably, the tops of both threaded posts are bent, and two slots are provided on the outer wall of both threaded posts near the hook. This design facilitates the attachment of external tools such as wrenches, thereby facilitating the rotation of the adjusting nut, adjusting the length of the tension spring and support spring, finely adjusting the vibration damping frequency range, and improving the overall vibration damping applicability.

[0011] This utility model has the following advantages:

[0012] 1. This servo drive protection device, by setting a sliding frame, mounts the servo drive body between the upper and lower limiting frames, and installs buffer seats at each of the eight corners of the servo drive body. Simultaneously, four compressed support springs are installed between the sliding frame and the lower limiting frame, and extended tension springs are hooked between the threaded column and the upper limiting frame. This facilitates the installation position of the servo drive body. The support springs, tension springs, buffer seats, and dampers are used to isolate and absorb external vibrations and impacts transmitted to the servo drive body. Compared to traditional fastener fixing, this structure minimizes the impact damage to the servo drive body, thereby effectively protecting it from impact damage and effectively solving the problems existing in the prior art.

[0013] 2. This servo drive protection device includes two connecting rods, each with a threaded post at its top. A tension spring is hooked between the top of the threaded post and the upper limiting frame. Two adjusting nuts are threaded onto the outer wall of each threaded post. By rotating the adjusting nuts, the extension length of the two tension springs can be adjusted. This allows for adjustment of the tensile stability of the servo drive body according to the external working environment, ensuring stable installation of the servo drive body. Attached Figure Description

[0014] Figure 1 This is a first-view structural diagram of the entire utility model;

[0015] Figure 2 This is a second-view structural diagram of the entire utility model;

[0016] Figure 3 This is a schematic diagram of the assembly structure of the upper and lower limiting frames of this utility model;

[0017] Figure 4 This is an exploded structural diagram of the base plate and sliding frame of this utility model;

[0018] Figure 5 This is a schematic diagram of the external structure of the threaded column of this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the servo driver body of this utility model.

[0020] In the diagram: 1-base plate, 2-connecting rod, 3-adjusting nut, 4-threaded column, 5-tension spring, 6-upper limit frame, 7-servo drive body, 8-pull rod, 9-support spring, 10-push frame, 11-guide rail, 12-lower limit frame, 13-sliding frame, 14-limit tube, 15-buffer seat, 16-damper. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0022] like Figures 1 to 6 As shown, a servo drive protection device includes a base plate 1. Guide rails 11 are installed on both sides of the top surface of the base plate 1, and a sliding frame 13 is slidably installed between the two. A lower limiting frame 12 is installed on the top of the sliding frame 13, and support springs 9 are provided at the four corners between the two. The four support springs 9 are all stainless steel helical springs (stiffness 10-50N / mm) to avoid high-frequency vibration, reduce the overall vibration frequency to 2-10Hz, cancel high-frequency vibration in real time, avoid resonance points, and work with dampers 16 to absorb vibration and impact energy, reducing the impact transmitted to the servo drive body 7.

[0023] Four dampers 16 are installed in the middle of the adjacent surfaces of the sliding frame 13 and the lower limiting frame 12. An upper limiting frame 6 is set at the top of the lower limiting frame 12, and the servo drive body 7 is installed between the two. Buffer seats 15 are set at each of the eight apex corners of the servo drive body 7 between the upper limiting frame 6 and the lower limiting frame 12. The buffer seats 15 are made of natural rubber or butyl rubber, which have high damping characteristics (damping ratio ζ≈0.05~0.3), can effectively absorb high-frequency vibration energy (typical frequency band 20~1000Hz), suppress harmonic vibrations caused by the servo motor PWM switching frequency (such as 8~16kHz), and reduce fatigue failure of electronic components caused by high-frequency micro-vibration. In addition, the use of natural rubber or butyl rubber can absorb more than 90% of the impact energy under instantaneous impact (such as the instantaneous acceleration >5G during the sudden stop of the external motor or sudden load change). Eight buffer seats 15 are distributed at the octagonal positions of the servo drive body 7, which facilitates the separation of the servo drive body 7 from the upper limiting frame 6 and the lower limiting frame 12. Combined with the high dielectric properties of rubber, the cumulative resistivity is >10. 12 Ω·cm, to prevent leakage current loops between the servo drive body 7 housing and the external rack.

[0024] Connecting rods 2 are installed on both sides of the middle of the sliding frame 13. Both connecting rods 2 are bent upwards, and both ends are provided with threaded posts 4. Two adjusting nuts 3 are threaded to the outer walls of the two threaded posts 4. Tension springs 5 ​​are hooked between the top of the two threaded posts 4 and the upper limiting frame 6. Tension springs 5 ​​are also made of stainless steel and work with four support springs 9 to effectively buffer the servo drive body 7.

[0025] The base plate 1, sliding frame 13, lower limiting frame 12, and upper limiting frame 6 all adopt a hollow structure. The two corners of the base plate 1 are equipped with blocks to block the sliding frame 13. The end of the base plate 1 away from the blocks is equipped with a pusher 10 to clamp the sliding frame 13. As an optional technical solution of this utility model, this makes it easier to reduce the relative weight of the base plate 1, sliding frame 13, lower limiting frame 12, and upper limiting frame 6. The blocks can limit the pushing position of the sliding frame 13. At the same time, the middle part of the pusher 10 is fixedly connected to the base plate 1 by two internal hex bolts, which makes it easier to lock the position of the sliding frame 13 and facilitates the operator to process and assemble on site.

[0026] In addition, the base plate 1, sliding frame 13, lower limiting frame 12 and upper limiting frame 6 all adopt a hollow structure to facilitate the contact between the servo driver body 7 and the outside air, so as to avoid affecting the heat dissipation of the servo driver body 7.

[0027] A pull rod 8 is installed at one end of the sliding frame 13 near the top push frame 10. The pull rod 8 is inclined upward and has a T-shape. As an optional technical solution of this utility model, this provides a gripping position for the operator to push and pull the sliding frame 13, thereby facilitating the installation and disassembly operations through the sliding frame 13 and improving the ease of operation.

[0028] The lower limiting frame 12 and the upper limiting frame 6 have the same external dimensions and are fixedly connected by fasteners. Limiting tubes 14 are installed at the four corners of the bottom surface of the lower limiting frame 12 and the four corners of the top surface of the sliding frame 13. The eight limiting tubes 14 are respectively connected to the two ends of the four support springs 9. As an optional technical solution of this utility model, the limiting tubes 14 provide installation positions for the four support springs 9. At the same time, they cooperate with the two tension springs 5 ​​and the four dampers 16 to absorb vibration, reduce external impact, and effectively prevent the servo drive body 7 from resonating with external vibrating components, thus ensuring the normal operation of the servo drive body 7.

[0029] Both connecting rods 2 are equipped with reinforcing ribs on their sides, and the tops of both connecting rods 2 are bent at obtuse angles. As an optional technical solution of this utility model, this facilitates the structural strength of the two connecting rods 2, allowing the connecting rods 2 to be pulled against the upper limiting frame 6 by two tension springs 5, thereby limiting the servo drive body 7 and preventing large-scale shaking of the servo drive body 7. The obtuse angle bend at the top of the connecting rod 3 facilitates the installation position of the two threaded posts 4, while ensuring that the adjusting nut 3 is tightly attached to the bend position of the connecting rod 2, ensuring sufficient contact area between the two and avoiding stress concentration.

[0030] The tops of the two threaded posts 4 are both bent, and two slots are provided on the outer wall of the two threaded posts 4 near the hook. As an optional technical solution of this utility model, this facilitates the provision of a locking position for external tools such as wrenches, thereby facilitating the rotation of the adjusting nut 3, adjusting the length of the tension spring 5 and the support spring 9, making fine adjustments to the vibration damping frequency range, and improving the overall vibration damping applicability range.

[0031] This servo drive protection device requires the following steps to be used:

[0032] 1) During installation, install the servo drive body 7 between the upper limit frame 6 and the lower limit frame 12, and lock it in place using fasteners;

[0033] 2) Place the assembly from step 1) between the two connecting rods 2, and then install the damper 16 and the support spring 9;

[0034] 3) Hook the two tension springs 5 ​​to the top of the upper limiting frame 6 and the threaded post 4, then insert the threaded post 4 to the top of the connecting rod 2, and rotate the adjusting nut 3 to adjust the tension springs 5 ​​and the support spring 9 to a reasonable length;

[0035] 4) Hold the lever 8 and push the sliding bracket 13 to install it between the two guide rails 11. Finally, use the push bracket 10 and bolts to lock it in place.

[0036] In summary, during user operation, the servo drive body 7 is mounted between the upper limiting frame 6 and the lower limiting frame 12 via the sliding bracket 13. Buffer seats 15 are installed at each of the eight corners of the servo drive body 7. Four compressed support springs 9 are installed between the sliding bracket 13 and the lower limiting frame 12. Extension springs 5 ​​are hooked between the threaded post 4 and the upper limiting frame 6. This facilitates the provision of a mounting position for the servo drive body 7. Furthermore, the support springs 9, extension springs 5, buffer seats 15, and dampers 16 are used to isolate and absorb external vibrations and impacts transmitted to the servo drive body 7. Compared to traditional fastener fixation, this structure can… This design minimizes the impact damage to the servo drive body 7, effectively protecting it from impact damage and solving existing problems. Furthermore, by setting two connecting rods 2, each with a threaded post 4 at its top, and a tension spring 5 hooked between the top of the threaded post 4 and the upper limiting frame 6, and by threading two adjusting nuts 3 to the outer wall of each threaded post 4, the extension length of the two tension springs 5 ​​can be adjusted according to the external working environment, ensuring stable installation of the servo drive body 7.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A servo driver protection device, characterized in that: The system includes a base plate (1), on both sides of the top surface of the base plate (1) are equipped with guide rails (11), and a sliding frame (13) is slidably mounted between the two. A lower limiting frame (12) is mounted on the top of the sliding frame (13), and support springs (9) are provided at the four corners between the two. Four dampers (16) are installed in the middle of the adjacent surfaces of the sliding frame (13) and the lower limiting frame (12). An upper limiting frame (6) is provided on the top of the lower limiting frame (12), and a servo drive body is mounted between the two. (7) Each of the eight corners of the servo drive body (7) is provided with a buffer seat (15) between the upper limit frame (6) and the lower limit frame (12). Each side of the middle part of the sliding frame (13) is provided with a connecting rod (2). Both connecting rods (2) are bent upwards, and both ends are provided with threaded posts (4). The outer walls of the two threaded posts (4) are threaded with two adjusting nuts (3). The top of the two threaded posts (4) is hooked with a tension spring (5) between the top of the two threaded posts (4) and the upper limit frame (6).

2. The servo driver protection device according to claim 1, characterized in that: The base plate (1), sliding frame (13), lower limiting frame (12) and upper limiting frame (6) all adopt a hollow structure. The two corners of the base plate (1) are equipped with blocks to block the sliding frame (13). The end of the base plate (1) away from the blocks is equipped with a pusher (10) to clamp the sliding frame (13).

3. The servo driver protection device according to claim 2, characterized in that: A pull rod (8) is installed at one end of the sliding frame (13) near the push frame (10). The pull rod (8) is inclined upward and has a T-shaped shape.

4. A servo driver protection device according to claim 3, characterized in that: The lower limiting frame (12) and the upper limiting frame (6) have the same external dimensions and are fixedly connected by fasteners. Limiting tubes (14) are installed at the four corners of the bottom surface of the lower limiting frame (12) and the four corners of the top surface of the sliding frame (13). The eight limiting tubes (14) are respectively connected to the two ends of the four supporting springs (9).

5. A servo driver protection device according to claim 4, characterized in that: The two connecting rods (2) are each equipped with a reinforcing rib plate on their sides, and the top ends of the two connecting rods (2) are bent at an obtuse angle.

6. A servo driver protection device according to claim 5, characterized in that: The tops of the two threaded posts (4) are both bent structures, and two slots are provided on the outer wall of the two threaded posts (4) near the hook.

Images