A linear motor equipped with power failure brake mechanism

Abstract

The present invention focuses on the technical field of linear motors, and specifically discloses a linear motor equipped with power failure brake mechanism. The assembly comprises a linear motor, a workbench, a guide rail, an end plate, and a deceleration assembly. A drag chain structure is fixedly connected to the workbench, and an electromagnet is fixedly connected to the side of the workbench, with a flexible flat cable fixedly connected to the electromagnet. When the linear motor loses power, the electromagnet becomes de-energized and demagnetized, activating the deceleration assembly to perform deceleration and locking from multiple aspects. When the linear motor is energized, the electromagnet becomes magnetized, allowing the deceleration mechanism to return to its initial state. This effectively solves the problem that, in practical applications of linear motors, the mover often cannot stop immediately due to inertia after a power outage, which may not only lead to deformation or damage of the mechanical structure but may also cause the mover to fall freely in vertically or obliquely mounted scenarios, resulting in equipment damage or even personal injury. Moreover, the deceleration and locking effect is rapid, and it can be quickly released once the linear motor is re-energized.

Description

A linear motor equipped with a power-off braking mechanism Technical Field

[0001] This invention relates to the field of linear motor technology, and more specifically to a linear motor equipped with a power-off braking mechanism. Background Technology

[0002] Linear motors have a wide range of applications. For example, in automated production lines, linear motors are widely used in various automated equipment, such as automated robotic arms and automated welding equipment. They are also widely used in medical equipment, such as surgical robots and medical diagnostic equipment, to achieve precision in medical operations through precise control. Moreover, linear motors are indispensable in logistics and warehousing. They can drive automated sorting systems, stacker cranes and other equipment to achieve fast and accurate goods handling, providing great convenience to our lives.

[0003] In practical applications of linear motors, effective braking after a power outage is crucial. Linear motors, with their ability to directly generate linear motion, play a key role in many high-precision, high-efficiency transmission systems. However, in the event of a sudden power outage, the mover often fails to stop immediately due to inertia. This can lead to deformation or damage to the mechanical structure, and in vertically or at an angle, it can cause the mover to fall freely, resulting in equipment damage or even personal injury. Therefore, this paper proposes a linear motor with a power outage braking mechanism. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art that when a linear motor is powered off, its moving part often cannot stop immediately due to inertia, which may lead to deformation or damage to the mechanical structure, resulting in equipment damage or even personal injury. Therefore, this invention proposes a linear motor with a power-off braking mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A linear motor with a power-off braking mechanism includes: a linear motor, characterized in that a worktable is slidably connected to the linear motor, a spring shell and a gearbox are fixedly connected to both sides of the worktable, an electromagnetic box is provided on the worktable at a corresponding position of the spring shell, and an electromagnet is provided in the electromagnetic box, a spring is fixedly connected to the side of the spring shell away from the worktable, a rack four is fixedly connected to the side of the spring near the worktable, the rack four is slidably connected to the spring shell, and a gear one is meshed with the top of the rack four, a magnet is provided on the side of the rack four away from the spring shell, the gear one is rotatably connected to the gearbox, and a reduction assembly one is meshed with the side of the gearbox near the guide rail, the reduction assembly one including: a reduction seat, and a reduction assembly two including: a reduction plate is meshed with the bottom of the gearbox.

[0007] When the linear motor is powered on, the electromagnet inside the electromagnetic box is energized, attracting the magnet on the rack four, causing the spring to be in a stretched state. When the linear motor is powered off, the magnetic attraction disappears, and the spring causes the rack four to slide in the spring shell through elastic force, thereby driving gear one to mesh and rotate. At the same time, the rotation of gear one drives the deceleration assembly one and deceleration assembly two to work through the action of the gear set in the gearbox, so that the deceleration seat and deceleration plate simultaneously squeeze the linear motor to form a double deceleration and braking effect.

[0008] The spring housing has an opening at the top for gear one to mesh with rack four, and two fixing legs are provided on the side of the spring housing near the gearbox, which are fixed to two adjacent sides of the gearbox respectively.

[0009] The above plan further includes:

[0010] The linear motor is equipped with guide rails on both sides.

[0011] Gear 5 is located inside the gearbox near the guide rail. Gear 5 is meshed with reduction assembly 2 on the side near gear 1. A threaded rod is rotatably connected inside the gearbox and is fixedly connected to gear 1. Gear 4 is fixedly connected to the side of the threaded rod away from gear 1 and meshes with reduction assembly 1 on the side near the reduction seat.

[0012] The threaded rod is threaded only at the position where it meshes with gear five, while the rest is a smooth round rod, making it easy to disassemble and replace.

[0013] A connecting pipe is fixedly connected to the side of the gearbox near the reduction gear.

[0014] The deceleration assembly includes: a deceleration base, on the side of the deceleration base away from the guide rail, a rack two is fixedly connected, the rack two is slidably connected to the connecting pipe, and the side of the rack two away from the deceleration plate is meshed with a gear four.

[0015] The second deceleration assembly includes: a deceleration plate, a rack three fixedly connected to the side of the deceleration plate away from the guide rail, a gear three meshing with the side of the rack three near the gear one, a gear two fixedly connected to the gear three, and the gear two rotatably connected to the worktable, a rack one meshing with the side of the gear two near the gear one, and the rack one meshing with the gear five.

[0016] A drag chain structure is fixedly connected to one side of the workbench.

[0017] Cable trays are installed on both sides of the workbench.

[0018] The electromagnetic box is fixedly connected to a flexible ribbon cable on the side away from rack 2 via a ribbon cable conduit.

[0019] The size of the ribbon cable tube matches the size of the flexible ribbon cable, and the flexible ribbon cable is fixedly connected to the side of the ribbon cable tube away from the electromagnetic box at a certain distance from the interface.

[0020] The linear motor has end plates at both ends, and a buffer is provided on the side of the end plates that are close to each other.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, when the linear motor is de-energized, the electromagnet will quickly lose power and magnetism, causing the spring to work immediately, so that the deceleration component can perform deceleration and braking in a very short time. Moreover, the two deceleration components act at different positions, which makes the deceleration and braking effect faster and more effective, while reducing the wear of each deceleration component, and greatly improving the service life of the deceleration component.

[0022] 2. In this invention, end plates are provided at both ends of the linear motor, and buffers are provided on the inner walls of the end plates, which effectively reduces damage caused by friction, impact and other factors. In addition, a drag chain structure is provided between the worktable and the linear motor to avoid equipment failure caused by its loosening or entanglement. At the same time, it also makes the layout of cables and pipelines more orderly, which is convenient for subsequent maintenance and management. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the overall structure of a linear motor with a power-off braking mechanism proposed in this invention;

[0024] Figure 2 is a schematic diagram of the structure of the present invention from a bottom view;

[0025] Figure 3 is a schematic diagram of the connection structure between the gearbox and the worktable of the present invention;

[0026] Figure 4 is a schematic diagram of the deceleration assembly of the present invention;

[0027] Figure 5 is a magnified view of part A in Figure 4;

[0028] Figure 6 is a cross-sectional structural diagram of the gearbox of the present invention.

[0029] Figure 7 is a schematic diagram of the electromagnet connection structure of the present invention.

[0030] In the diagram: 1. Linear motor; 2. Worktable; 3. Guide rail; 4. Spring housing; 5. Gear 1; 6. Flexible cable; 7. End plate; 8. Buffer; 9. Cable chain structure; 10. Gear 2; 11. Rack 1; 12. Rack 2; 13. Reducer seat; 14. Gear 3; 15. Rack 3; 16. Reducer plate; 17. Rack 4; 18. Spring; 19. Threaded rod; 20. Gear 4; 21. Gear 5; 22. Electromagnetic box; 23. Gearbox; 24. Connecting pipe; 25. Cable conduit. Detailed Implementation

[0031] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1: Please refer to Figures 1-7. The present invention is a linear motor with a power-off braking mechanism, including: a linear motor 1, a worktable 2 slidably connected to the linear motor 1, a spring shell 4 and a gearbox 23 fixedly connected to both sides of the worktable 2, an electromagnetic box 22 opened at the corresponding position of the spring shell 4 on the worktable 2, and an electromagnet is set in the electromagnetic box 22, a spring 18 is fixedly connected to the side of the spring shell 4 away from the worktable 2, a rack 17 is fixedly connected to the side of the spring 18 near the worktable 2, the rack 17 is slidably connected to the spring shell 4, and a gear 5 is meshed with the top of the rack 17, a magnet is set on the side of the rack 17 away from the spring shell 4, the gear 5 is rotatably connected to the gearbox 23, and a reduction assembly 1 is meshed with the side of the gearbox 23 near the guide rail 3, the reduction assembly 1 includes: a reduction seat 13, and a reduction assembly 2 is meshed with the bottom of the gearbox 23, the reduction assembly 2 includes: a reduction plate 16;

[0033] When the linear motor is powered on, the electromagnet in the electromagnetic box 22 is energized, and the magnet on the rack 17 is magnetically attracted, causing the spring 18 to be in a stretched state. When the linear motor is powered off, the magnetic attraction effect disappears, and the spring 18 causes the rack 17 to slide towards the spring shell 4 through the elastic force, thereby driving the gear 5 to mesh and rotate. At the same time, the gear 5 rotates, and through the action of the gear set in the gearbox 23, it drives the first and second reduction components to work, so that the reduction seat 13 and the reduction plate 16 simultaneously squeeze the linear motor 1 to form a double deceleration and braking effect.

[0034] The linear motor 1 has guide rails 3 on both sides.

[0035] Gear 5 21 is provided inside the gearbox 23 on the side near the guide rail 3. Gear 5 21 is meshed with the reduction assembly 2 on the side near gear 1 5. A threaded rod 19 is provided inside the gearbox 23 and is fixedly connected to gear 1 5. Gear 4 20 is fixedly connected on the side of the threaded rod 19 away from gear 1 5. Gear 4 20 is meshed with the reduction assembly 1 on the side near 51.

[0036] A connecting pipe 24 is fixedly connected to the side of the gearbox 23 near the reduction gear 13.

[0037] The first deceleration assembly includes: a deceleration base 13, on the side of the deceleration base 13 away from the guide rail 3, a rack 12 is fixedly connected, the rack 12 is slidably connected to the connecting pipe 24, and the side of the rack 12 away from the deceleration plate 16 is meshed with a gear 20.

[0038] The second deceleration assembly includes: a deceleration plate 16, a rack 15 fixedly connected to the side of the deceleration plate 16 away from the guide rail 3, a gear 14 meshing with the side of the rack 15 near the gear 5, a gear 10 fixedly connected to the gear 14, and the gear 10 rotatably connected to the worktable 2, a rack 11 meshing with the side of the gear 10 near the gear 5, and the rack 11 meshing with the gear 21.

[0039] The working principle of the linear motor with a power-off braking mechanism proposed in this invention is as follows: When the linear motor body is de-energized, the electromagnetic box 22 loses its magnetism. At this time, the magnetic attraction between the magnet on rack 4 17 and the electromagnetic box 22 disappears, and the rack 4 17 slides horizontally towards the spring 18 due to the elastic force of the spring 18. While the spring 18 slides, the gear teeth on the spring 18 mesh with and rotate gear 5, thereby driving reduction assembly 1 and reduction assembly 2 to work simultaneously. When reduction assembly 1 works, specifically: when gear 5 rotates, it drives the threaded rod 19 to rotate, thereby causing gear 4 20 to rotate, which in turn meshes with and rotates rack 2 12, causing rack 2 12 to slide horizontally towards the guide rail 3, ultimately causing the reduction seat 13 to squeeze and decelerate the guide rail 3. When the second reduction assembly operates, it works as follows: When gear 5 rotates, it drives the threaded rod 19 to rotate, thereby engaging gear 21. Gear 21 then engages rack 11, causing it to slide vertically away from the threaded rod 19. As rack 11 slides, it engages gear 20, which in turn causes gear 3 14, which is fixedly connected to gear 20, to rotate. When gear 3 14 rotates, it engages rack 3 15, causing it to slide vertically towards the guide rail 3. Ultimately, this causes the reduction plate 16 to press against and rub against the guide rail 3, thus achieving a deceleration and braking effect. The simultaneous operation of the two reduction assemblies greatly enhances the deceleration and braking effect while also sharing the damage caused by the deceleration action, significantly reducing wear and tear on parts and extending their service life. 1. Linear motor; 2. Worktable; 3. Guide rail; 4. Spring housing; 5. Gear 1; 6. Flexible cable; 7. End plate; 8. Buffer; 9. Cable drag chain structure; 10. Gear 2; 11. Rack 1; 12. Rack 2; 13. Reducer seat; 14. Gear 3; 15. Rack 3; 16. Reducer plate; 17. Rack 4; 18. Spring; 19. Threaded rod; 20. Gear 4; 21. Gear 5; 22. Electromagnetic box; 23. Gearbox; 24. Connecting pipe; 25. Cable tray.

[0040] Example 2: Please refer to Figures 1-7. This invention is a linear motor with a power-off braking mechanism. A drag chain structure 9 is fixedly connected to one side of the worktable 2. Cable trays 25 are provided on both sides of the worktable 2. A flexible cable 6 is fixedly connected to the side of the electromagnetic box 22 away from the rack 12 through the cable trays 25. The linear motor 1 has end plates 7 at both ends, and a buffer 8 is provided on the side of the end plates 7 that is close to each other.

[0041] The working principle of the linear motor with a power-off braking mechanism proposed in this invention is as follows: When the linear motor is powered on, the electromagnetic box 22 generates magnetic force at an extremely high speed, thereby attracting the magnet on rack four 17 to slide rapidly towards the electromagnetic box 22. At this time, rack four 17 meshes with gear one 5 to rotate the threaded rod 19. The rotation of the threaded rod 19 simultaneously drives gear five 21 and gear four 20 to rotate. When gear five 21 rotates, it drives gear two 10 to rotate through rack one 11, which in turn causes gear three 14 to mesh with rack three 15, causing rack three 15 to drive the reduction plate 16 to slide away from the guide rail 3, thus canceling the braking effect of the reduction assembly one at an extremely high speed. At the same time, the rotation of gear four 20 meshes with rack two 12 to rotate rack two 12, causing rack two 12 to drive the reduction seat 13 to slide horizontally away from the guide rail 3, thus canceling the braking effect of the reduction assembly two at an extremely high speed. 1. Linear motor; 2. Worktable; 3. Guide rail; 4. Spring housing; 5. Gear 1; 6. Flexible cable; 7. End plate; 8. Buffer; 9. Cable drag chain structure; 10. Gear 2; 11. Rack 1; 12. Rack 2; 13. Reducer seat; 14. Gear 3; 15. Rack 3; 16. Reducer plate; 17. Rack 4; 18. Spring; 19. Threaded rod; 20. Gear 4; 21. Gear 5; 22. Electromagnetic box; 23. Gearbox; 24. Connecting pipe; 25. Cable tray.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A linear motor equipped with a power-off braking mechanism, comprising: A linear motor (1) is characterized in that a worktable (2) is slidably connected to the linear motor (1), and a spring shell (4) and a gearbox (23) are fixedly connected to both sides of the worktable (2). An electromagnetic box (22) is provided on the worktable (2) at the corresponding position of the spring shell (4), and an electromagnet is provided in the electromagnetic box (22). A spring (18) is fixedly connected to the side of the spring shell (4) away from the worktable (2), and a rack (17) is fixedly connected to the side of the spring (18) close to the worktable (2). The rack four (17) is slidably connected to the spring shell (4), and the top of the rack four (17) is meshed with a gear one (5). A magnet is provided on the side of the rack four (17) away from the spring shell (4). The gear one (5) is rotatably connected to the gearbox (23). The gearbox (23) is meshed with a deceleration assembly one on the side near the guide rail (3). The deceleration assembly one includes a deceleration seat (13). The bottom of the gearbox (23) is meshed with a deceleration assembly two. The deceleration assembly two includes a deceleration plate (16). When the linear motor (1) is powered on, the electromagnet in the electromagnetic box (22) is powered on and magnetically attracts the magnet on the rack four (17), so that the spring (18) is in a stretched state. When the linear motor (1) is powered off, the magnetic attraction effect disappears, and the spring (18) causes the rack four (17) to slide toward the spring shell (4) through the elastic force, thereby driving the gear one (5) to mesh and rotate. While the gear one (5) rotates, it drives the deceleration assembly one and deceleration assembly two to work through the gear set in the gearbox (23), so that the deceleration seat (13) and the deceleration plate (16) simultaneously squeeze the linear motor (1) to form a double deceleration braking effect.

2. A linear motor with a power-off braking mechanism according to claim 1, characterized in that, The linear motor (1) is provided with guide rails (3) on both sides.

3. A linear motor with a power-off braking mechanism according to claim 1, characterized in that, Gear 5 (21) is provided inside the gearbox (23) on the side near the guide rail (3). Gear 5 (21) is meshed with gear 2 on the side near gear 1 (5). A threaded rod (19) is provided inside the gearbox (23) and is fixedly connected to gear 1 (5). Gear 4 (20) is fixedly connected on the side of the threaded rod (19) away from gear 1 (5). Gear 4 (20) is meshed with gear 1 on the side near gear 1 (5).

4. A linear motor with a power-off braking mechanism according to claim 1, characterized in that, The gearbox (23) is fixedly connected to a connecting pipe (24) on the side near the reduction gear (13).

5. A linear motor with a power-off braking mechanism according to claim 4, characterized in that, The first deceleration assembly includes: a deceleration seat (13), on the side of the deceleration seat (13) away from the guide rail (3) a rack two (12) is fixedly connected, the rack two (12) is slidably connected to the connecting pipe (24), and the side of the rack two (12) away from the deceleration plate (16) is meshed with the gear four (20).

6. A linear motor with a power-off braking mechanism according to claim 3, characterized in that, The second deceleration assembly includes: a deceleration plate (16), a rack three (15) fixedly connected to the side of the deceleration plate (16) away from the guide rail (3), a gear three (14) meshing with the side of the rack three (15) close to the gear one (5), a gear two (10) fixedly connected to the gear three (14), and the gear two (10) rotatably connected to the worktable (2), a rack one (11) meshing with the side of the gear two (10) close to the gear one (5), and the rack one (11) meshing with the gear five (21).

7. A linear motor with a power-off braking mechanism according to claim 1, characterized in that, A drag chain structure (9) is fixedly connected to one side of the workbench (2).

8. A linear motor with a power-off braking mechanism according to claim 1, characterized in that, Cable trays (25) are provided on both sides of the workbench (2).

9. A linear motor with a power-off braking mechanism according to claim 1, characterized in that, The electromagnetic box (22) is fixedly connected to a flexible flat cable (6) via a flat cable tube (25) on the side away from the rack (12).

10. A linear motor with a power-off braking mechanism according to claim 1, characterized in that, The linear motor (1) has end plates (7) at both ends, and a buffer (8) is provided on the side of the end plates (7) that are close to each other.