Flexible transmission control mechanical limiting device

Abstract

The utility model relates to the field of limiting device discloses a flexible transmission control mechanical limiting device, including fixed block, the fixed block inside sliding connection has the support, the support inside is opened with a plurality of threaded holes, the fixed block outside is connected with two bolts, the fixed block inside is opened with fixed groove, the fixed groove inside sliding connection has the sliding block, the sliding block inside screw thread connection has the threaded rod, the threaded rod is connected with the rotating handle away from the fixed block one end fixedly, the sliding block outside fixed connection has the buffer shell. In the utility model, the rubber head absorbs the impact force of contact instant first, spring one bears main buffer load, spring two auxiliary relief impact, form axial double elastic buffer, pass through the radial elastic deformation of spring three and absorb lateral kinetic energy. This compound buffer design improves the anti -impact ability of device greatly, has prolonged the service life of device and the equipment of being limited significantly.

Description

Technical Field

[0001] This utility model relates to the field of limiting devices, and in particular to a flexible transmission control mechanical limiting device. Background Technology

[0002] As traditional mechanical limit devices suffer from problems such as impact and equipment wear due to rigid contact, flexible transmission control mechanical limit devices have emerged. They are mainly used in simple mechanical transmission systems such as small conveyors, lifting equipment, and material pushing mechanisms in industries such as light manufacturing, warehousing and logistics, and food processing.

[0003] The flexible transmission control mechanical limit device mainly consists of a flexible transmission device, a guide assembly, and a protective housing. Its main function is to precisely limit the movement range of mechanical parts through a purely mechanical structure, reduce impact with the help of springs and buffer structures, and is adjustable to adapt to different working conditions, thereby ensuring the safe and stable operation of the equipment and extending its service life. Currently available flexible transmission control mechanical limit devices suffer from poor buffering effect and short service life due to their limited buffering methods. Furthermore, existing flexible transmission control mechanical limit devices primarily perform coarse adjustments when adjusting their own position, making it difficult to achieve both coarse and fine adjustments. Therefore, a flexible transmission control mechanical limit device is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a flexible transmission control mechanical limit device, which aims to improve the problems of poor buffering effect, short service life and insufficient adjustment accuracy of the device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a flexible transmission control mechanical limiting device, comprising a fixed block, a bracket slidably connected inside the fixed block, multiple threaded holes inside the bracket, two bolts threadedly connected to the outside of the fixed block, a fixing groove inside the fixed block, a slider slidably connected inside the fixing groove, a threaded rod threadedly connected inside the slider, a rotating handle fixedly connected to the end of the threaded rod away from the fixed block, and a buffer shell fixedly connected to the outside of the slider.

[0006] As a further description of the above technical solution: The buffer shell is fixedly connected to the outside of a first abutment ring, the inside of the first abutment ring is slidably connected to a first guide rail, the outside of the first guide rail is fitted with a first spring, the outside of the first guide rail is slidably connected to a second abutment ring, the outside of the first guide rail is fitted with a second spring, the end of the first guide rail away from the first abutment ring is fixedly connected to a third abutment ring, and the end of the third abutment ring away from the second abutment ring is fixedly connected to a rubber head.

[0007] As a further description of the above technical solution: The buffer shell has a buffer groove inside. The guide rail one is fixedly connected to the end away from the abutment ring three. The guide rail two is slidably connected to the inner wall of the buffer groove. The guide rail two abuts against the outside of the abutment ring one. The inner wall of the buffer groove has multiple square grooves. Abutment plate is slidably connected inside the square groove. A spring three is fixedly connected to one side of the abutment plate. A buffer head is fixedly connected to the other side of the abutment plate.

[0008] As a further description of the above technical solution: The bolt is threaded into the inner wall of the threaded hole, and the threaded rod is rotatably connected inside the fixed block.

[0009] As a further description of the above technical solution: One end of the spring is fixedly connected to the outside of the first abutment ring, and the other end of the spring is fixedly connected to the outside of the second abutment ring.

[0010] As a further description of the above technical solution: One end of the second spring is fixedly connected to the outside of the second abutment ring, and the other end of the second spring is fixedly connected to the outside of the third abutment ring.

[0011] As a further description of the above technical solution: The end of the spring away from the abutment is fixedly connected to the inner wall of the square groove, and the abutment abuts against the inner wall of the square groove.

[0012] As a further description of the above technical solution: The buffer head is slidably connected to the outside of the second guide rail.

[0013] This utility model has the following beneficial effects: 1. In this invention, the rubber head first absorbs the impact force at the moment of contact, the high-stiffness spring one bears the main buffer load, and the low-stiffness spring two assists in mitigating the initial impact, forming a double elastic buffer along the axial axis; simultaneously, the guide rail two compresses the buffer head, and the radial elastic deformation of the spring three absorbs the lateral kinetic energy, achieving multi-dimensional buffering. This composite buffering design significantly improves the impact resistance of the device, reduces rigid collision losses between mechanical parts and the limiting device, and significantly extends the service life of the device and the limited equipment.

[0014] 2. In this utility model, a wide range of coarse adjustments is achieved through the relative sliding of the bracket and the fixed block, and the cooperation of the bolt with different threaded holes. The rotating handle drives the threaded rod to rotate, causing the slider to slide precisely along the fixed groove. The combination of these two adjustment methods ensures both the flexibility of the adjustment range and the accuracy of the limit position, solving the problems of the existing device's single adjustment method and insufficient accuracy, and adapting to more complex working conditions. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a flexible transmission control mechanical limiting device proposed in this utility model; Figure 2 This is a schematic diagram of the threaded rod of a flexible transmission control mechanical limiting device proposed in this utility model; Figure 3 This is a schematic diagram of the guide rail 2 of the flexible transmission control mechanical limiting device proposed in this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the structure of the rubber head of a flexible transmission control mechanical limit device proposed in this utility model.

[0016] Legend: 1. Fixing block; 2. Bracket; 3. Threaded hole; 4. Bolt; 5. Fixing groove; 6. Slider; 7. Threaded rod; 8. Rotating handle; 9. Buffer housing; 10. Abutment ring one; 11. Spring one; 12. Abutment ring two; 13. Spring two; 14. Abutment ring three; 15. Rubber head; 16. Buffer groove; 17. Square groove; 18. Abutment plate; 19. Spring three; 20. Buffer head; 21. Guide rail one; 22. Guide rail two. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1-3This utility model provides an embodiment of a flexible transmission control mechanical limiting device, comprising a fixed block 1, with a bracket 2 slidably connected inside the fixed block 1. The bracket 2 has multiple threaded holes 3 evenly distributed inside, which, in conjunction with two bolts 4 threadedly connected to the outside of the fixed block 1, allow for multi-position fixing of the bracket 2 and the fixed block 1 by screwing the bolts 4 into the threaded holes 3 at different positions. The fixed block 1 has a fixed groove 5 inside, with a slider 6 slidably connected inside the fixed groove 5. The slider 6 can slide stably along the fixed groove 5. A horizontally arranged threaded rod 7 is threadedly connected inside the slider 6. A rotating handle 8, convenient for gripping and operation, is fixedly connected to the end of the threaded rod 7 away from the fixed block 1. Rotating the rotating handle 8 drives the threaded rod 7 to rotate, enabling the slider 6 to precisely adjust its position within the fixed groove 5. A buffer shell 9 is fixedly connected to the outside of the slider 6, forming a closed buffer space. Reference Figures 1-3 The buffer shell 9 has an integrally formed annular abutment ring 10 on its exterior. A guide rail 21 slides through the abutment ring 10 and can move smoothly along the axial direction. A spring 11 is sleeved on the outside of the guide rail 12, with its two ends abutting between the abutment ring 10 and the abutment ring 22 respectively. The abutment ring 22 located outside the spring 11 is also slidably connected to the outside of the guide rail 121. A spring 23 is sleeved between the abutment ring 22 and the abutment ring 34 on the outside of the guide rail 121. The spring 11 has greater stiffness than the spring 213, forming a double elastic buffer structure. The end of the guide rail 12 away from the abutment ring 10 is fixedly connected to the abutment ring 34 by bolts. The end of the abutment ring 34 away from the abutment ring 22 is attached with an elastic rubber head 15, which can play a preliminary buffering role at the moment of contact. Reference Figures 4-5 The buffer housing 9 has a cylindrical buffer groove 16 inside. The end of the guide rail 1 21 away from the abutment ring 3 14 is integrally formed with a guide rail 22 with a slightly larger diameter. The guide rail 22 is slidably connected to the inner wall of the buffer groove 16 through clearance fit to ensure coaxiality during movement. The end of the guide rail 22 abuts against the outside of the abutment ring 10. The inner wall of the buffer groove 16 has a plurality of square grooves 17 evenly opened. Each square groove 17 is slidably connected to a radially movable abutment plate 18. A spring 3 19 is fixedly connected to one side of the abutment plate 18. The end of the spring 3 19 away from the abutment plate 18 is fixedly connected to the inner wall of the square groove 17. The other side of the abutment plate 18 is fixedly connected to the buffer head 20, the arc surface of which fits against the outer wall of the guide rail 2 22. Reference Figures 1-2 Bolt 4 is tightly connected to the inner wall of threaded hole 3 through threaded engagement, and the connection between bracket 2 and fixed block 1 is ensured by increasing the thread preload; threaded rod 7 is rotatably connected to the inside of fixed block 1 through bearing, which ensures smooth rotation and restricts axial displacement. Reference Figures 1-3One end of spring 11 is fixedly connected to the outside of abutment ring 10, and the other end is also fixed to the outside of abutment ring 2 12 to ensure stable transmission of elastic force; one end of spring 2 13 is fixedly connected to the outside of abutment ring 2 12, and the other end is fixedly connected to the outside of abutment ring 3 14, forming a series buffer structure with spring 11. Reference Figures 4-5 The end of spring 19 away from the abutment plate 18 is fixedly connected to the inner wall of square groove 17 by a buckle to ensure stable radial elastic support; the abutment plate 18 is tightly pressed against the inner wall of square groove 17 under the thrust of spring 19, and the buffer head 20 can slide flexibly along square groove 17 by the compression of guide rail 22 to achieve radial buffering. Spring 19 is compressed and absorbs the kinetic energy of guide rail 22. Working Principle: When the device is in operation, the relative positions of the bracket 2 and the fixed block 1 are adjusted, and the bolt 4 is screwed into different threaded holes 3 to achieve multiple fixing positions. The rotating handle 8 drives the threaded rod 7 to rotate, causing the slider 6 to slide along the fixed groove 5, finely adjusting the limiting device to the preset limit position. When the mechanical parts contact the rubber head 15, the impact force is initially buffered by the rubber head 15, then pushes the abutment ring 14 to compress the spring 13. The spring 13 provides auxiliary buffering, alleviating the initial impact. Simultaneously, the abutment ring 12 moves with the guide rail 21 towards the abutment ring 10, compressing the spring 11. The spring 11 has higher stiffness and bears the main buffering force. The guide rail 21 synchronously drives the guide rail 22 to slide along the inner wall of the buffer groove 16, and its outer wall presses against the buffer head 20, causing the abutment plate 18 to move along the square groove 17 and compress the spring 19. The radial elastic deformation absorbs the kinetic energy of the guide rail 22. When the elastic reaction forces of spring 11, spring 23, and spring 319 are balanced with the driving force of the mechanical components, the device achieves flexible limiting. After the external force disappears, each spring resets, driving guide rail 121, guide rail 22, and the abutment ring assembly back to their initial positions, completing one limiting cycle.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible transmission control mechanical limiting device, comprising a fixed block (1), characterized in that: The fixing block (1) has a bracket (2) slidably connected inside. The bracket (2) has multiple threaded holes (3) inside. The fixing block (1) has two bolts (4) threadedly connected to the outside. The fixing block (1) has a fixing groove (5) inside. The fixing groove (5) has a slider (6) slidably connected inside. The slider (6) has a threaded rod (7) threadedly connected inside. The end of the threaded rod (7) away from the fixing block (1) is fixedly connected to a rotating handle (8). The slider (6) has a buffer shell (9) fixedly connected to the outside.

2. The flexible transmission control mechanical limit device according to claim 1, characterized in that: The buffer shell (9) is fixedly connected to the outside of the first abutment ring (10), the inside of the first abutment ring (10) is slidably connected to the first guide rail (21), the outside of the first guide rail (21) is fitted with the first spring (11), the outside of the first guide rail (21) is slidably connected to the second abutment ring (12), the outside of the first guide rail (21) is fitted with the second spring (13), the end of the first guide rail (21) away from the first abutment ring (10) is fixedly connected to the third abutment ring (14), the end of the third abutment ring (14) away from the second abutment ring (12) is fixedly connected to the rubber head (15).

3. The flexible transmission control mechanical limit device according to claim 2, characterized in that: The buffer shell (9) has a buffer groove (16) inside. The guide rail one (21) is fixedly connected to the end away from the abutment ring three (14) by a guide rail two (22). The guide rail two (22) is slidably connected to the inner wall of the buffer groove (16). The guide rail two (22) abuts against the outside of the abutment ring one (10). The inner wall of the buffer groove (16) has multiple square grooves (17). The abutment plate (18) is slidably connected inside the square groove (17). The spring three (19) is fixedly connected to one side of the abutment plate (18). The buffer head (20) is fixedly connected to the other side of the abutment plate (18).

4. The flexible transmission control mechanical limit device according to claim 1, characterized in that: The bolt (4) is threaded to the inner wall of the threaded hole (3), and the threaded rod (7) is rotatably connected to the inside of the fixed block (1).

5. The flexible transmission control mechanical limit device according to claim 2, characterized in that: One end of the spring (11) is fixedly connected to the outside of the abutment ring (10), and the other end of the spring (11) is fixedly connected to the outside of the abutment ring (12).

6. The flexible transmission control mechanical limit device according to claim 2, characterized in that: One end of the second spring (13) is fixedly connected to the outside of the second abutment ring (12), and the other end of the second spring (13) is fixedly connected to the outside of the third abutment ring (14).

7. The flexible transmission control mechanical limit device according to claim 3, characterized in that: The end of the spring three (19) away from the abutment plate (18) is fixedly connected to the inner wall of the square groove (17), and the abutment plate (18) abuts against the inner wall of the square groove (17).

8. The flexible transmission control mechanical limit device according to claim 3, characterized in that: The buffer head (20) is slidably connected to the outside of the guide rail (22).

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