Servo cylinder anti-loose limiting device
By designing an anti-loosening limit device for the servo electric cylinder, the problem of loose connection between the piston rod and the force sensor was solved, achieving a stable connection of the servo electric cylinder and ensuring the operational reliability of the servo electric cylinder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI WENDE AUTOMATION TECH CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-06-05
AI Technical Summary
The connection between the piston rod and the force sensor in existing servo electric cylinders is prone to loosening, affecting the operational stability of the servo electric cylinder.
Design a servo electric cylinder anti-loosening limit device, including a cylinder barrel, a cylinder rod, a first anti-loosening limit device and a second anti-loosening limit device. The force sensor is installed on the second anti-loosening limit device by welding and screw fixing, and a stable connection is achieved by using the mutually limiting first and second anti-loosening limit devices.
This effectively prevents the piston rod from loosening with the force sensor, ensuring the operational stability and reliability of the servo electric cylinder.
Smart Images

Figure CN224329317U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of servo electric cylinder anti-loosening technology, specifically a servo electric cylinder anti-loosening limit device. Background Technology
[0002] Servo cylinders are modular products that integrate servo motors and lead screws, converting the rotary motion of servo motors into linear motion. They also transform the best advantages of servo motors—precise speed control, precise revolution control, and precise torque control—into precise speed control, precise position control, and precise thrust control, making them revolutionary new products that achieve high-precision linear motion.
[0003] Existing servo electric cylinders have the following drawbacks:
[0004] The connection between the piston rod and the force sensor in existing servo electric cylinders often becomes loose, which affects the operation of the servo electric cylinder.
[0005] Therefore, a solution is needed. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] To address the shortcomings of existing technologies, this utility model provides a servo electric cylinder anti-loosening limit device to solve the problems mentioned in the background art.
[0008] (II) Technical Solution
[0009] To achieve the above objectives, this utility model provides the following technical solution: a servo electric cylinder anti-loosening limiting device, comprising a device body, the device body including a cylinder barrel, a cylinder rod, a first anti-loosening limiting device, a second anti-loosening limiting device, and a force sensor. The cylinder rod is mounted on the left end of the cylinder barrel, the first anti-loosening limiting device is welded to the left end of the cylinder rod, the second anti-loosening limiting device is located outside the first anti-loosening limiting device, and the force sensor is fixed to the left end of the second anti-loosening limiting device by screws; the second anti-loosening limiting device... The positioning device includes a main limiting block, an upper gripping block, and a lower gripping block. The main limiting block, upper gripping block, and lower gripping block are smoothly transitioned and integrally formed. The main limiting block has an L-shaped structure. The upper gripping block is located at the top right side of the main limiting block and has an L-shaped structure. The lower gripping block is located at the bottom right side of the main limiting block and has an L-shaped structure. Both the upper and lower gripping blocks have a set of locking holes distributed in a horizontally symmetrical manner on their surfaces. The main limiting block has several sets of locking holes on its left side.
[0010] Preferably, the first anti-loosening limiting device has a Z-shaped structure. The first anti-loosening limiting device includes an upper limit block, a connectable block, and a lower limit block. The upper limit block, the connectable block, and the lower limit block all have rectangular structures. The upper limit block, the connectable block, and the lower limit block are all smoothly transitioned and integrally formed structures. The upper limit block is located at the top left end of the connectable block, and the lower limit block is located at the bottom right end of the connectable block. The surfaces of the upper limit block and the lower limit block are each provided with a set of locking holes distributed in a symmetrical manner. The lower limit block has a welding port on its right side.
[0011] Preferably, a first side guide block is provided on both sides of the main limiting block, and a second side guide block is provided on both sides of the cylinder barrel. A set of guide rods distributed symmetrically between the first side guide block and the second side guide block are provided. Both the first side guide block and the second side guide block have a rectangular structure. A set of guide holes distributed in a row at equal intervals are provided on the surface of both the first side guide block and the second side guide block.
[0012] Preferably, the top of the upper gripping block is provided with a first upper guide block, the top of the cylinder is provided with a second upper guide block, a set of guide rods distributed symmetrically between the first upper guide block and the second upper guide block are provided, the first upper guide block and the second upper guide block are both rectangular in shape, and a set of guide holes distributed laterally at equal intervals are opened on the surface of the first upper guide block and the second upper guide block.
[0013] (III) Beneficial Effects
[0014] This utility model provides a servo electric cylinder anti-loosening limit device. It has the following beneficial effects:
[0015] This solution provides a servo electric cylinder anti-loosening limiting device that effectively prevents loosening, thereby ensuring the stability and reliability of the servo electric cylinder's operation. In use, a force sensor is installed on the second anti-loosening limiting device, and then the first anti-loosening limiting device is welded and fixed to the cylinder rod. The first anti-loosening limiting device is then embedded within the second anti-loosening limiting device, allowing the cylinder to push against the second anti-loosening limiting device via the first anti-loosening limiting device. During retraction, the first anti-loosening limiting device drives the second anti-loosening limiting device to retract. Because the first and second anti-loosening limiting devices mutually limit and lock each other, the stability of the connection between the force sensor and the cylinder rod is ensured, achieving the purpose of limiting and preventing loosening. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the connection between the first anti-loosening limiting device and the second anti-loosening limiting device of this utility model.
[0018] In the diagram, 1. Device body; 2. Cylinder barrel; 3. Cylinder rod; 4. First anti-loosening limit device; 5. Second anti-loosening limit device; 6. Force sensor; 7. Upper limit block; 8. Connectable block; 9. Lower limit block; 10. Locking hole; 11. Weld joint; 12. Main limit block; 13. Upper gripping block; 14. Lower gripping block; 15. First side guide block; 16. Second side guide block; 17. Guide rod; 18. Guide hole; 19. First upper guide block; 20. Second upper guide block. Detailed Implementation
[0019] 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.
[0020] Please see Figure 1-2 This utility model provides a technical solution:
[0021] Example
[0022] The problem to be solved is that the connection between the piston rod and the force sensor of the existing servo electric cylinder often becomes loose, which affects the operation of the servo electric cylinder.
[0023] The solution is as follows: A servo electric cylinder anti-loosening limiting device includes a device body 1. The device body 1 includes a cylinder barrel 2, a cylinder rod 3, a first anti-loosening limiting device 4, a second anti-loosening limiting device 5, and a force sensor 6. The cylinder rod 3 is installed on the left end of the cylinder barrel 2. The first anti-loosening limiting device 4 is welded to the left end of the cylinder rod 3. The second anti-loosening limiting device 5 is located outside the first anti-loosening limiting device 4. The force sensor 6 is fixed to the left end of the second anti-loosening limiting device 5 by screws. The second anti-loosening limiting device 5 includes a main limiting block 12, an upper gripping block 13, and a lower gripping block 14. The main limiting block 12, the upper gripping block 13, and the lower gripping block 14 are smoothly transitioned and integrally machined. The molding structure includes an L-shaped main limiting block 12, an upper gripping block 13 located at the top right side of the main limiting block 12, and a lower gripping block 14 located at the bottom right side of the main limiting block 12. Both the upper and lower gripping blocks 13 and 14 have a set of horizontally symmetrical locking holes 10 on their surfaces. The main limiting block 12 also has several sets of locking holes 10 on its left side. The first anti-loosening limiting device 4 has a Z-shaped structure and includes an upper limiting block 7, a connectable block 8, and a lower limiting block 9. The upper limiting block 7, connectable block 8, and lower limiting block 9 are all rectangular in shape. The upper limit block 7, the connectable block 8, and the lower limit block 9 are all smoothly transitioned and integrally formed structures. The upper limit block 7 is located at the top left end of the connectable block 8, and the lower limit block 9 is located at the bottom right end of the connectable block 8. Both the upper limit block 7 and the lower limit block 9 have a set of symmetrically distributed locking holes 10 on their surfaces. The lower limit block 9 has a welding port 11 on its right side. In use, the force sensor 6 is installed on the main limit block 12 of the second anti-loosening limiting device 5. Then, the lower limit block 9 of the first anti-loosening limiting device welding 4 is welded and fixed to the left end of the cylinder rod 3. The first anti-loosening limiting device 4 is embedded into the second anti-loosening limiting device 5 (the upper limit block 7 can then be L-shaped). The upper gripping block 13 is used for limiting, while the lower limiting block 9 can be limited by the lower gripping block 14. After limiting, the upper limiting block 7 overlaps with the locking hole 10 of the upper gripping block 13, and the lower limiting block 9 overlaps with the locking hole 10 of the lower gripping block 14. Then, the operator uses bolts to lock the two together. Thus, the cylinder rod 3 can push the second anti-loosening limiting device 5 through the first anti-loosening limiting device 4. When retracting, the first anti-loosening limiting device 4 can drive the second anti-loosening limiting device 5 to retract. Because the first anti-loosening limiting device 4 and the second anti-loosening limiting device 5 limit and lock each other, the stability of the connection between the force sensor 6 and the cylinder rod 3 is ensured, and the purpose of limiting and preventing loosening is achieved.
[0024] The main limiting block 12 is provided with first side guide blocks 15 on both sides, and the cylinder barrel 2 is provided with second side guide blocks 16 on both sides. A set of guide rods 17 distributed symmetrically between the first side guide blocks 15 and the second side guide blocks 16 are provided. The first side guide blocks 15 and the second side guide blocks 16 are both rectangular in shape. A set of guide holes 18 distributed in a row at equal intervals are opened on the surface of the first side guide blocks 15 and the second side guide blocks 16. The guide rods 17 between the first side guide blocks 15 and the second side guide blocks 16 can improve the stability of the second anti-loosening limiting device 5 when it moves laterally.
[0025] The upper gripping block 13 is provided with a first upper guide block 19 at its top, and the cylinder barrel 2 is provided with a second upper guide block 20 at its top. A set of guide rods 17 distributed symmetrically between the first upper guide block 19 and the second upper guide block 20 are provided. Both the first upper guide block 19 and the second upper guide block 20 are rectangular in shape. A set of guide holes 18 distributed laterally at equal intervals are provided on the surface of both the first upper guide block 19 and the second upper guide block 20. When the cylinder rod 3 extends or retracts, the guide rods 17 between the first upper guide block 19 and the second upper guide block 20 can improve the stability of the top of the second anti-loosening limiting device 5 when it moves laterally.
[0026] Working principle: During operation, the force sensor 6 is installed on the main limiting block 12 of the second anti-loosening limiting device 5. Then, the lower limiting block 9 of the first anti-loosening limiting device welding 4 is welded and fixed to the left end of the cylinder rod 3. The first anti-loosening limiting device 4 is embedded in the second anti-loosening limiting device 5. (The upper limiting block 7 can be limited by the L-shaped upper gripping block 13, and the lower limiting block 9 can be limited by the lower gripping block 14. After limiting, the upper limiting block 7 overlaps with the locking hole 10 of the upper gripping block 13, and the lower limiting block 9 is limited.) Block 9 overlaps with the locking hole 10 of the lower gripping block 14, and then the workers use bolts to lock the two together. Thus, the cylinder rod 3 can push the second anti-loosening limit device 5 through the first anti-loosening limit 4. When retracting, the first anti-loosening limit device 4 can drive the second anti-loosening limit device 5 to retract. Because the first anti-loosening limit device 4 and the second anti-loosening limit device 5 limit and lock each other, the stability of the connection between the force sensor 6 and the cylinder rod 3 is guaranteed, and the purpose of limiting and preventing loosening is achieved.
[0027] The present invention comprises: 1. Device body; 2. Cylinder barrel; 3. Cylinder rod; 4. First anti-loosening limiting device; 5. Second anti-loosening limiting device; 6. Force sensor; 7. Upper limit block; 8. Connectable block; 9. Lower limit block; 10. Locking hole; 11. Weld joint; 12. Main limit block; 13. Upper gripping block; 14. Lower gripping block; 15. First side guide block; 16. Second side guide block; 17. Guide rod; 18. Guide hole; 19. First upper guide block; 20. Second upper guide block. All components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem solved by this invention is that the connection between the piston rod and the force sensor of existing servo electric cylinders often becomes loose, thus affecting the operation of the servo electric cylinder. This invention, through the combination of the above components, can effectively achieve the purpose of preventing loosening, thereby ensuring the stability and reliability of the servo electric cylinder operation.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A servo electric cylinder anti-loosening limit device, characterized in that: The device includes a main body (1), which includes a cylinder barrel (2), a cylinder rod (3), a first anti-loosening limiting device (4), a second anti-loosening limiting device (5), and a force sensor (6). The cylinder rod (3) is installed on the left end of the cylinder barrel (2), the first anti-loosening limiting device (4) is welded to the left end of the cylinder rod (3), the second anti-loosening limiting device (5) is located outside the first anti-loosening limiting device (4), and the force sensor (6) is fixed to the left end of the second anti-loosening limiting device (5) by screws. The second anti-loosening limiting device (5) includes a main limiting block (12), an upper gripping block (13) and a lower gripping block (14). The main limiting block (12), the upper gripping block (13) and the lower gripping block (14) are smoothly transitioned and integrally formed. The main limiting block (12) has an L-shaped structure. The upper gripping block (13) is located at the top right side of the main limiting block (12). The lower gripping block (14) is located at the bottom right side of the main limiting block (12). The upper gripping block (14) has an L-shaped structure. A set of locking holes (10) distributed in a horizontally symmetrical manner are opened on the surface of the upper gripping block (13) and the lower gripping block (14). Several sets of locking holes (10) are opened on the left side of the main limiting block (12).
2. The servo electric cylinder anti-loosening limit device according to claim 1, characterized in that: The first anti-loosening limiting device (4) has a Z-shaped structure. The first anti-loosening limiting device (4) includes an upper limit block (7), a connectable block (8), and a lower limit block (9). The upper limit block (7), the connectable block (8), and the lower limit block (9) all have a rectangular structure. The upper limit block (7), the connectable block (8), and the lower limit block (9) are all smoothly transitioned and integrally formed structures. The upper limit block (7) is located at the top left end of the connectable block (8), and the lower limit block (9) is located at the bottom right end of the connectable block (8). The upper limit block (7) and the lower limit block (9) both have a set of locking holes (10) distributed symmetrically on their surfaces. The lower limit block (9) has a welding port (11) on its right side.
3. The servo electric cylinder anti-loosening limit device according to claim 1, characterized in that: The main limiting block (12) is provided with a first side guide block (15) on both sides, and the cylinder barrel (2) is provided with a second side guide block (16) on both sides. A set of guide rods (17) distributed symmetrically between the first side guide block (15) and the second side guide block (16) are provided. The first side guide block (15) and the second side guide block (16) are both rectangular in shape. A set of guide holes (18) distributed in a row at equal intervals are opened on the surface of the first side guide block (15) and the second side guide block (16).
4. The servo electric cylinder anti-loosening limit device according to claim 1, characterized in that: The upper gripping block (13) is provided with a first upper guide block (19) at the top, and the cylinder (2) is provided with a second upper guide block (20) at the top. A set of guide rods (17) are provided between the first upper guide block (19) and the second upper guide block (20) in a symmetrical manner. The first upper guide block (19) and the second upper guide block (20) are both rectangular in shape. A set of guide holes (18) are provided on the surface of the first upper guide block (19) and the second upper guide block (20) in a transversely equidistant manner.