Anti-rotation locking device for electric cylinder

Abstract

The utility model relates to the technical field of electric cylinders, and provides an anti-rotation locking device for an electric cylinder, which comprises a connecting seat and anti-rotation components, one side of the connecting seat is fixedly connected with a cylinder barrel, one side of the cylinder barrel far away from a mounting plate is fixedly connected with a mounting plate, the anti-rotation components are arranged on two sides of the connecting seat, and each anti-rotation component comprises two first bumps, two first protruding blocks are symmetrically and fixedly connected to the two sides of the mounting plate, sleeves are fixedly connected to one sides of the two first protruding blocks, second protruding blocks are symmetrically and fixedly connected to the two sides of the mounting plate, the ends, away from the first protruding blocks, of the two sleeves are fixedly connected with the second protruding blocks, and movable rods are slidably connected to inner cavities of the two sleeves. And the displacement block moves in the limiting groove in a limited mode through the anti-rotating pin, meanwhile, the piston rod drives the connecting plate to move, the connecting plate synchronously drives the movable rod to slide in the sleeve in a limited mode, therefore, directional linear movement of the first spring sleeve is guaranteed, and the stability of the electric cylinder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric cylinders, in particular to an anti-rotation locking device for electric cylinders. Background Art

[0002] Electric cylinders are products designed for continuous motion, low to high loads (usually high speeds), and can be cycled many times over their service life. These products have extremely high positioning accuracy and controllability, and can achieve precise motion control under loads from several kilograms to 50 tons.

[0003] For example, publication number CN219611523U discloses an electric cylinder, which includes a toothed belt linkage, a connecting piece 1 is provided on one side of the toothed belt linkage, a reducer and an electric cylinder body are provided on the other side of the toothed belt linkage, a servo motor is provided on one side of the reducer, and a connecting piece 2 is provided on one side of the electric cylinder body. The gear inside the toothed belt linkage is driven and connected to the screw inside the electric cylinder body, and a through groove is provided on the inner wall of the connecting piece 1, and the through groove is distributed in a perfect circle. The electric cylinder achieves high energy efficiency and extremely low environmental burden by providing the toothed belt linkage, the connecting piece 1, the reducer, the servo motor and the electric cylinder body. The device solves the problem that the current electric cylinder has a relatively complex and numerous structure when in use, which occupies a large space during installation, thereby resulting in greater restrictions on the installation environment.

[0004] However, in the prior art, the traditional electric cylinder needs to accurately control the linear displacement of the piston rod when used, and does not want it to rotate. Rotational motion may cause motion instability and affect the overall performance of the system. Therefore, an anti-rotation locking device for an electric cylinder is proposed to solve this problem. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that the linear displacement of the piston rod needs to be precisely controlled when the conventional electric cylinder is used, but rotation of the piston rod is not desired, and the rotational motion may cause motion instability and affect the overall performance of the system.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an anti-rotation locking device for an electric cylinder, comprising a connecting seat and an anti-rotation component, one side of the connecting seat is fixedly connected to a cylinder, the side of the cylinder away from the mounting plate is fixedly connected to the mounting plate, the anti-rotation component is arranged on both sides of the connecting seat, the anti-rotation component comprises two first protrusions, one side of the two first protrusions are fixedly connected to a sleeve, the two sides of the mounting plate are symmetrically fixedly connected to second protrusions, one end of the two sleeves away from the first protrusions are fixedly connected to the second protrusions, the inner cavities of the two sleeves are slidably connected to movable rods, and one end of the two movable rods are fixedly connected through a connecting plate.

[0007] As a preferred embodiment, a servo motor is fixedly connected to one side of the connecting seat located above the cylinder, and the output end of the connecting seat is transmission-connected to a first transmission tooth.

[0008] As a preferred implementation, the first transmission tooth is transmission-connected to the second transmission tooth via a transmission belt, and a lead screw is transmission-connected to the axis of one side of the second transmission tooth.

[0009] As a preferred embodiment, a displacement block is threadedly connected to the surface of the screw rod, an anti-rotation pin is symmetrically fixedly connected to the outer wall of the displacement block, one end of the anti-rotation pin is fixedly connected to a piston rod, a first spring sleeve is provided on the surface of the piston rod, and one end of the first spring sleeve is fixedly connected to the mounting plate.

[0010] As a preferred embodiment, a piston hole is provided in the inner cavity of the cylinder, and limiting grooves are symmetrically provided on both sides of the piston hole in the inner cavity of the cylinder, and the anti-rotation pin is slidably connected to the limiting groove, and positioning holes are symmetrically provided on the inner wall of the limiting groove, and the positioning holes are connected with the anti-collision pad through a positioning rod.

[0011] As a preferred implementation, the connecting seat is fixedly connected to the cylinder barrel by a second bolt, and the cylinder barrel is fixedly connected to the mounting plate by a first bolt.

[0012] As a preferred implementation, a second spring sleeve is provided on the surface of the movable rod, and one end of the second spring sleeve is fixedly connected to the mounting plate.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] The utility model provides an anti-rotation component to ensure that the piston rod performs directional linear displacement. The displacement block is limited in movement in the limit groove by the anti-rotation pin. At the same time, the piston rod drives the connecting plate to move, and the connecting plate synchronously drives the movable rod to slide in the sleeve to limit position, thereby ensuring the directional linear movement of the first spring sleeve, thereby improving the stability of the electric cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the overall structure of an anti-rotation locking device for an electric cylinder provided by the utility model;

[0016] Figure 2 A schematic cross-sectional view of the structure of a connection seat of an anti-rotation locking device for an electric cylinder provided by the utility model;

[0017] Figure 3 A schematic cross-sectional view of the structure of a cylinder barrel of an anti-rotation locking device for an electric cylinder provided by the utility model;

[0018] Figure 4 The utility model provides an anti-rotation locking device for an electric cylinder Figure 3 A schematic diagram of the structure enlargement in the middle;

[0019] Legend:

[0020] 1. Connecting seat; 2. Servo motor; 3. Cylinder; 4. Mounting plate; 5. First protrusion; 6. Second protrusion; 7. Sleeve; 8. Movable rod; 9. Connecting plate; 10. First transmission tooth; 11. Transmission belt; 12. Second transmission tooth; 13. Screw; 14. Displacement block; 15. Anti-rotation pin; 16. Piston rod; 17. First spring sleeve; 18. Second spring sleeve; 19. Piston hole; 20. Limiting groove; 21. Positioning hole; 22. Positioning rod; 23. Anti-collision pad; 24. First bolt; 25. Second bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4The utility model provides a technical solution: an anti-rotation locking device for an electric cylinder, comprising a connecting seat 1 and an anti-rotation assembly, one side of the connecting seat 1 is fixedly connected to a cylinder barrel 3, and the side of the cylinder barrel 3 away from the mounting plate 4 is fixedly connected to the mounting plate 4, the anti-rotation assembly is arranged on both sides of the connecting seat 1, the anti-rotation assembly comprises two first protrusions 5, one side of the two first protrusions 5 is fixedly connected to a sleeve 7, and the two sides of the mounting plate 4 are symmetrically fixedly connected to second protrusions 6, one end of the two sleeves 7 away from the first protrusion 5 is fixedly connected to the second protrusion 6, the inner cavities of the two sleeves 7 are slidably connected to movable rods 8, one end of the two movable rods 8 is fixedly connected through a connecting plate 9, the displacement block 14 is limited in movement in the limiting groove 20 through the anti-rotation pin 15, and at the same time, the piston rod 16 drives the connecting plate 9 to move, and the connecting plate 9 synchronously drives the movable rod 8 to slide in the sleeve 7 to limit position, thereby ensuring the directional linear movement of the first spring sleeve 17.

[0023] like Figure 1-4 As shown, a servo motor 2 is fixedly connected to one side of the connecting seat 1 located above the cylinder 3, the output end of the connecting seat 1 is transmission-connected with a first transmission tooth 10, the first transmission tooth 10 is transmission-connected to the second transmission tooth 12 through a transmission belt 11, a lead screw 13 is transmission-connected to the axis of one side of the second transmission tooth 12, the connecting seat 1 is fixedly connected to the cylinder 3 through a second bolt 25, the cylinder 3 is fixedly connected to the mounting plate 4 through a first bolt 24, and the connecting seat 1, the cylinder 3 and the mounting plate 4 are assembled and fixed in a screw connection as a whole, which is convenient for disassembly and assembly, thereby facilitating the inspection and replacement of the electric cylinder.

[0024] like Figure 1-4 As shown, the surface of the screw rod 13 is threadedly connected with a displacement block 14, the outer wall of the displacement block 14 is symmetrically fixedly connected with an anti-rotation pin 15, one end of the anti-rotation pin 15 is fixedly connected to a piston rod 16, and a first spring sleeve 17 is provided on the surface of the piston rod 16, and one end of the first spring sleeve 17 is fixedly connected to the mounting plate 4, and a second spring sleeve 18 is provided on the surface of the movable rod 8, and one end of the second spring sleeve 18 is fixedly connected to the mounting plate 4, the second spring sleeve 18 and the first spring sleeve 17 can effectively prevent external dust from entering, thereby extending the service life of the entire device.

[0025] like Figure 1-4 As shown, a piston hole 19 is provided in the inner cavity of the cylinder 3, and limiting grooves 20 are symmetrically provided on both sides of the piston hole 19 in the inner cavity of the cylinder 3, and the anti-rotation pin 15 is slidably connected to the limiting groove 20, and a positioning hole 21 is symmetrically provided on the inner wall of the limiting groove 20, and the positioning hole 21 is plugged into the anti-collision pad 23 through the positioning rod 22. Due to the design of the anti-collision pad 23, when the anti-rotation pin 15 drives the piston rod 16 to contract or extend to the maximum extent, the piston rod 16 will reduce necessary collisions due to the action of the anti-collision pad 23, thereby ensuring the stability of the anti-rotation pin 15 during operation.

[0026] Working principle:

[0027] When in use, the servo motor 2 is powered by an external power supply, and the output end of the servo motor 2 drives the first transmission tooth 10 to rotate, and the first transmission tooth 10 drives the second transmission tooth 12 to rotate through the transmission belt 11, and the second transmission tooth 12 drives the screw rod 13 to rotate, and when the screw rod 13 rotates, it drives the anti-rotation pin 15 to move horizontally, and when the anti-rotation pin 15 moves, the piston rod 16 is limited in the limiting groove 20 to prevent the anti-rotation pin 15 from self-rotating when it moves. When the anti-rotation pin 15 moves, it drives the piston rod 16 to move outward, and the piston rod 16 drives the connecting plate 9 to move, and the connecting plate 9 synchronously drives the movable rod 8 in the sleeve 7 The limited sliding ensures the directional linear movement of the first spring sleeve 17. When the anti-rotation pin 15 moves in the limit groove 20 through the piston rod 16, when the anti-rotation pin 15 drives the piston rod 16 to contract or extend to the maximum extent, the piston rod 16 will reduce necessary collisions due to the action of the anti-collision pad 23, thereby ensuring the stability of the anti-rotation pin 15 during operation. At the same time, due to the action of the first spring sleeve 17 and the second spring sleeve 18, the first spring sleeve 17 and the second spring sleeve 18 will expand and contract along with the length changes of the movable rod 8 and the piston rod 16, thereby effectively avoiding the entry of external dust and extending the service life of the device.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An anti-rotation locking device for an electric cylinder, comprising a connecting seat (1) and an anti-rotation assembly, characterized in that: A cylinder (3) is fixedly connected to one side of the connecting seat (1), and a side of the cylinder (3) away from the mounting plate (4) is fixedly connected to the mounting plate (4). The anti-rotation assembly is arranged on both sides of the connecting seat (1), and the anti-rotation assembly comprises two first protrusions (5), one side of each of the two first protrusions (5) is fixedly connected to a sleeve (7), and both sides of the mounting plate (4) are symmetrically fixedly connected to second protrusions (6), one end of the two sleeves (7) away from the first protrusions (5) is fixedly connected to the second protrusions (6), and the inner cavities of the two sleeves (7) are slidably connected to movable rods (8), and one end of the two movable rods (8) is fixedly connected via a connecting plate (9).

2. The anti-rotation locking device for an electric cylinder according to claim 1, characterized in that: A servo motor (2) is fixedly connected to one side of the connection seat (1) at a position above the cylinder (3), and a first transmission tooth (10) is transmission-connected to the output end of the connection seat (1).

3. The anti-rotation locking device for an electric cylinder according to claim 2, characterized in that: The first transmission tooth (10) is transmission-connected to the second transmission tooth (12) via a transmission belt (11); a screw rod (13) is transmission-connected to the axis of one side of the second transmission tooth (12).

4. The anti-rotation locking device for an electric cylinder according to claim 3, characterized in that: The surface of the screw rod (13) is threadedly connected to a displacement block (14); an outer wall of the displacement block (14) is symmetrically fixedly connected to an anti-rotation pin (15); one end of the anti-rotation pin (15) is fixedly connected to a piston rod (16); a first spring sleeve (17) is provided on the surface of the piston rod (16); and one end of the first spring sleeve (17) is fixedly connected to the mounting plate (4).

5. The anti-rotation locking device for an electric cylinder according to claim 1, characterized in that: The inner cavity of the cylinder (3) is provided with a piston hole (19), and the inner cavity of the cylinder (3) is provided with limit grooves (20) symmetrically on both sides of the piston hole (19), and the anti-rotation pin (15) is slidably connected to the limit groove (20), and the inner wall of the limit groove (20) is symmetrically provided with positioning holes (21), and the positioning holes (21) are plugged with the anti-collision pad (23) through a positioning rod (22).

6. The anti-rotation locking device for an electric cylinder according to claim 1, characterized in that: The connecting seat (1) and the cylinder barrel (3) are fixedly connected via a second bolt (25), and the cylinder barrel (3) and the mounting plate (4) are fixedly connected via a first bolt (24).

7. The anti-rotation locking device for an electric cylinder according to claim 1, characterized in that: A second spring sleeve (18) is provided on the surface of the movable rod (8), and one end of the second spring sleeve (18) is fixedly connected to the mounting plate (4).

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