A high-precision load-bearing actuator assembly
By introducing a stiffening plate stabilizing mechanism and a brush cleaning mechanism into the actuator cylinder assembly, the problems of bending deformation and impurity entry of the telescopic cylinder under heavy loads are solved, achieving high-precision, stable, and long-life actuator cylinder motion.
Patent Information
- Application Number
- CN202522209863.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-20
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-10-20
AI Technical Summary
Existing actuators are prone to bending and deformation of telescopic components under heavy load or high dynamic response conditions, and impurities can easily enter the cylinder during movement, leading to wear and jamming, which affects motion accuracy and lifespan.
A stabilizing mechanism is provided on the outer wall of the telescopic cylinder, which is fitted with a groove on the inner wall of the actuating cylinder. A chip removal mechanism with an annular brush is installed at the port of the actuating cylinder to enhance structural rigidity and remove impurities from the outer surface.
It improves the motion accuracy and stability of the actuator under high load, prevents impurities from entering the cylinder, and extends the service life of the equipment.
Smart Images
Figure CN224944259U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of actuator technology, and in particular to a high-precision bearing actuator assembly. Background Technology
[0002] As an important actuator, the main function of the actuator is to provide precise linear telescopic motion to drive loads or perform specific actions. It is widely used in many fields such as aerospace, engineering machinery, and automated production lines.
[0003] In practical applications, especially under heavy loads or high dynamic response conditions, the telescopic component of the actuator, namely the telescopic cylinder, must not only withstand axial pushing and pulling forces, but also radial forces from lateral impact forces or uneven loads. Existing actuators are designed to mainly rely on the material rigidity of the telescopic cylinder itself and the guide sleeve inside the actuator body to resist this radial force. However, when the extension stroke of the telescopic cylinder is long or the radial impact force is large, the telescopic cylinder will undergo elastic bending or even plastic deformation relying solely on its own rigidity and limited guide support. This deformation will seriously affect the motion accuracy of the actuator, increase motion resistance, and may even cause the telescopic cylinder to jam or scratch the inner wall of the actuator body, affecting the normal operation and service life of the actuator.
[0004] Furthermore, when the actuator cylinder is extended, it is exposed to the external environment. Dust, metal shavings, and mud impurities in the environment will adhere to the outer surface of the extension cylinder. When the extension cylinder retracts into the actuator cylinder body, if these attached impurities are not effectively removed, they will be carried into the interior of the actuator cylinder. These impurities will act like abrasives, accelerating the wear of seals, guide sleeves, and the inner wall of the cylinder. This will not only cause leakage inside and outside the actuator cylinder and reduce its working performance, but in severe cases, it will also cause movement jamming and lead to equipment failure.
[0005] Therefore, this utility model proposes a high-precision bearing actuator assembly to overcome the shortcomings of the prior art. Utility Model Content
[0006] In view of the problems in the prior art, such as the telescopic component of a high-precision load-bearing actuator assembly being prone to bending and deformation when subjected to radial impact or load, affecting motion stability, and the impurities adhering during movement being easily carried into the cylinder body causing wear and low reliability, this utility model aims to provide a high-precision load-bearing actuator assembly with an improved structure that can effectively solve the above problems.
[0007] This utility model provides a high-precision load-bearing actuator assembly, including: an actuator body, and a telescopic cylinder retractably disposed within the actuator body; as well as a stabilizing mechanism and a chip removal mechanism.
[0008] The stabilizing mechanism includes a reinforcing plate fixedly connected to the outer wall of the telescopic cylinder; the chip removal mechanism includes a mounting ring sleeved and fixed to one end of the actuating cylinder body, a connecting ring II disposed within the mounting ring, and a brush disposed on the connecting ring II.
[0009] Furthermore, the inner wall of the actuating cylinder body is provided with a sliding groove that slides in conjunction with the stiffening plate of the stabilizing mechanism; the brush of the chip removal mechanism is used to clean the outer surface of the telescopic cylinder when it moves.
[0010] Preferably, there are multiple stiffening plates and multiple sliding grooves, and the multiple stiffening plates and multiple sliding grooves are in one-to-one sliding cooperation.
[0011] Preferably, the stabilizing mechanism further includes a connecting ring and a stabilizing bar, wherein the connecting ring and the stabilizing bar are connected between adjacent stiffening plates.
[0012] Preferably, the brush is arranged in a ring on the inner circumferential surface of the connecting ring two.
[0013] Preferably, the second connecting ring is provided with a rubber rod, and the mounting ring is provided with a slot for engaging and fixing the rubber rod.
[0014] Preferably, the high-precision bearing actuator assembly further includes bolts that pass through the mounting ring to fasten the mounting ring to the actuator body.
[0015] Preferably, a connector is connected to the end of the telescopic cylinder away from the actuating cylinder body.
[0016] Preferably, the stiffening plate is a plate-shaped structure distributed along the axial direction of the telescopic cylinder.
[0017] This utility model has the following beneficial effects:
[0018] 1. This utility model solves the problem in the prior art where the telescopic cylinder of the actuator has insufficient structural rigidity and will bend and deform when subjected to radial impact or load, thus affecting the motion accuracy and stability. It is achieved by setting a stiffening plate on the outer wall of the telescopic cylinder that slides and engages with the inner wall of the actuator cylinder, and connecting multiple stiffening plates into an integral reinforced structure through a connecting ring and a stabilizing strip.
[0019] 2. This utility model solves the problem in the prior art where, during the operation of the telescopic cylinder, dust and debris adhering to its outer surface are carried into the cylinder body, causing wear or jamming of internal precision components and thus shortening the service life of the equipment. By fixing a cleaning mechanism including an annular brush at the port of the actuator cylinder body, the present invention achieves the technical effect of automatically cleaning the outer surface of the telescopic cylinder during its retraction process, effectively preventing external impurities from entering the cylinder body, thereby protecting internal components, reducing the failure rate, and extending the overall service life of the actuator cylinder. Attached Figure Description
[0020] Figure 1 This is a perspective view of a high-precision load-bearing actuator cylinder assembly proposed in this utility model;
[0021] Figure 2 This is a right view of a high-precision bearing actuator assembly proposed in this utility model;
[0022] Figure 3 This is an exploded view of the stabilizing mechanism in a high-precision bearing actuator assembly proposed in this utility model;
[0023] Figure 4 This is an exploded view of the chip removal mechanism in a high-precision bearing actuator cylinder assembly proposed in this utility model.
[0024] Legend:
[0025] 1. Actuating cylinder body; 2. Mounting ring; 3. Stabilizing mechanism; 31. Telescopic cylinder; 32. Reinforcing plate; 33. Connecting ring one; 34. Stabilizing bar; 35. Slide groove; 36. Connecting piece; 4. Chip removal mechanism; 41. Connecting ring two; 42. Brush; 43. Rubber rod; 44. Slot; 45. Bolt. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0027] Example:
[0028] Please refer to Figure 1 and Figure 2A high-precision load-bearing actuator assembly includes an actuator body 1 as the main frame, and a telescopic cylinder 31 that is telescopically disposed in the inner cavity of the actuator body 1 and can reciprocate along the axial direction of the actuator body 1. To improve the working reliability of the actuator assembly under complex working conditions, the high-precision load-bearing actuator assembly also integrates a stabilizing mechanism 3 and a chip removal mechanism 4. (Refer to...) Figure 3 The stabilizing mechanism 3 is used to ensure the structural stability of the telescopic cylinder 31 during movement. The stabilizing mechanism 3 consists of multiple stiffening plates 32, which extend axially along the telescopic cylinder 31 and are uniformly fixed around its outer circumferential surface. Multiple sliding grooves 35 are correspondingly provided on the inner wall of the actuating cylinder body 1. Each stiffening plate 32 slides into a corresponding sliding groove 35. During the telescopic movement of the telescopic cylinder 31, the stiffening plates 32 slide along the sliding grooves 35, thereby providing radial support to the telescopic cylinder 31, effectively resisting external impact forces and preventing the telescopic cylinder 31 from bending. (Refer to...) Figure 4 The cleaning mechanism 4 is used to automatically clean the outer surface of the telescopic cylinder 31. The cleaning mechanism 4 includes a mounting ring 2, a connecting ring 41, and a brush 42. The mounting ring 2 is sleeved and fixed to the end of the actuating cylinder body 1 as a mounting base. The connecting ring 41 is coaxially arranged inside the mounting ring 2. The brush 42 is circumferentially fixed to the inner circumferential wall of the connecting ring 41. The bristles of the brush 42 face and elastically contact the outer surface of the telescopic cylinder 31, so that the telescopic cylinder 31 passes through the brush 42 each time it retracts, thereby removing the attached impurities.
[0029] Please refer to Figure 3 To construct a more stable overall support frame by assembling multiple stiffening plates 32 distributed along the axial direction of the telescopic cylinder 31, the stabilizing mechanism 3 also includes a connecting ring 33 and a stabilizing bar 34. The connecting ring 33 is circumferentially arranged between adjacent stiffening plates 32, while the stabilizing bar 34 is axially arranged between adjacent stiffening plates 32. The connecting ring 33 and the stabilizing bar 34 are welded or integrally formed to connect all stiffening plates 32, forming a cage-like reinforcing mesh. This structure greatly improves the overall structural rigidity and impact and bending resistance of the telescopic cylinder 31, ensuring that the telescopic cylinder 31 can still maintain extremely high linear motion accuracy when moving at high speed or bearing external loads.
[0030] Please refer to Figure 2 and Figure 4The connecting ring 41 of the chip removal mechanism 4 is positioned and connected to the mounting ring 2 via a rubber rod 43. Specifically, a slot 44 is provided on the inner wall of the mounting ring 2. The rubber rod 43 on the connecting ring 41 is snapped and fixed in the slot 44 during installation, realizing the axial and circumferential positioning of the connecting ring 41 relative to the mounting ring 2. To ensure that the connection between the entire chip removal mechanism 4 and the actuator cylinder body 1 is absolutely stable, the high-precision bearing actuator cylinder assembly is also provided with bolts 45. The bolts 45 pass through the mounting ring 2 and are screwed into the end face of the actuator cylinder body 1, thereby fastening the mounting ring 2 and the connecting ring 41 positioned by the rubber rod 43 through the slot 44 to the actuator cylinder body 1 together. This composite connection method of snapping positioning and bolt 45 locking ensures that the chip removal mechanism 4 remains stable and reliable under severe vibration conditions.
[0031] As a preferred embodiment, to achieve a reliable connection between the high-precision bearing actuator assembly and the external actuator, please refer to... Figure 1 and Figure 2 The end of the telescopic cylinder 31 away from the actuator cylinder body 1 is fixedly connected to a connector 36. The connector 36 can be designed as a connection end with an internal threaded hole, or as a flange structure with multiple mounting through holes, so that it can be easily assembled and disassembled with external loads by standard fasteners 45 bolts.
[0032] As another preferred embodiment, in order to obtain more balanced and stable radial support for the telescopic cylinder 31 during movement, the number of stiffening plates 32 can be set to four or six, and the multiple stiffening plates 32 are symmetrically distributed at ninety or sixty degrees along the circumference of the telescopic cylinder 31. The multiple sliding grooves 35 on the inner wall of the actuating cylinder body 1 also adopt a completely corresponding symmetrical layout, thereby realizing the one-to-one sliding of the stiffening plates 32 and the sliding grooves 35. This highly symmetrical support structure can effectively offset and disperse radial impact forces from any direction, and maximize the coaxiality and stability of the telescopic cylinder 31 during movement.
[0033] As another preferred embodiment, in order to achieve a highly efficient and non-destructive cleaning effect, the brush 42 in the dust removal mechanism 4 is preferably made of high-density nylon material with good wear resistance. The bristles of the brush 42 are fixed in a ring to the entire inner circumferential surface of the connecting ring 41 by a bristle implantation or one-piece injection molding process to form a continuous brush ring. The hardness and length of the bristles are set to ensure that while effectively scraping away the dust and metal shavings attached to the surface of the telescopic cylinder 31, it will not cause wear or scratches to the precision surface of the telescopic cylinder 31 or any existing anti-corrosion coating.
[0034] Working principle: The rubber rod 43 on the connecting ring 2 41 is installed in the slot 44 of the mounting ring 2. The mounting ring 2 is fixed by bolts 45, so that the chip removal mechanism 4 is stably installed on the right side of the actuator body 1. The telescopic cylinder 31 moves inside the actuator body 1. Multiple stiffening plates 32 fixedly connected to the outer wall of the telescopic cylinder 31 slide in multiple sliding grooves 35 opened inside the actuator body 1. When encountering an impact, the multiple stiffening plates 32 can effectively prevent the telescopic cylinder 31 from bending. The connecting ring 1 33 and the stabilizing bar 34 between the multiple stiffening plates 32 further enhance the impact resistance of the structure, ensure the stability of the telescopic cylinder 31 during the movement, and enable the actuator to complete the telescopic action normally. The connecting piece 36 is used to connect with other structures.
[0035] If impurities are generated on the surface of the telescopic cylinder 31 during its movement, a cleaning operation is required. When the telescopic cylinder 31 retracts into the interior of the actuator cylinder body 1, the telescopic cylinder 31 will pass through the brush 42 on the connecting ring 41 inside the mounting ring 2. The brush 42 contacts the surface of the telescopic cylinder 31. During the movement of the telescopic cylinder 31, the brush 42 will clean the surface of the telescopic cylinder 31, remove the impurities attached to the surface of the telescopic cylinder 31, and prevent the impurities from affecting the movement of the telescopic cylinder 31 or causing wear.
[0036] The stabilizing mechanism 3 ensures structural stability during the extension and retraction of the actuator cylinder, while the chip removal mechanism 4 removes impurities from the surface of the actuator cylinder, thus meeting the performance requirements of the actuator cylinder during use.
Claims
1. A high-precision load-bearing actuator assembly, comprising: Actuating cylinder body (1), and telescopic cylinder (31) retractably disposed within the actuating cylinder body (1). The high-precision bearing actuator assembly is characterized in that it further includes: The stabilizing mechanism (3) includes a stiffening plate (32) fixedly connected to the outer wall of the telescopic cylinder (31), and the inner wall of the actuating cylinder body (1) is provided with a sliding groove (35) that slides with the stiffening plate (32). And a cleaning mechanism (4), the cleaning mechanism (4) includes a mounting ring (2) sleeved and fixed to one end of the actuating cylinder body (1), a connecting ring two (41) disposed in the mounting ring (2) and a brush (42) disposed on the connecting ring two (41), the brush (42) being used to clean the outer surface of the telescopic cylinder (31) when it moves.
2. The high-precision bearing actuator cylinder assembly according to claim 1, characterized in that, There are multiple stiffening plates (32) and multiple sliding grooves (35), and the multiple stiffening plates (32) and multiple sliding grooves (35) are in one-to-one sliding cooperation.
3. A high-precision bearing actuator cylinder assembly according to claim 2, characterized in that, The stabilizing mechanism (3) further includes a connecting ring (33) and a stabilizing bar (34), which are connected between adjacent stiffening plates (32).
4. The high-precision bearing actuator cylinder assembly according to claim 1, characterized in that, The brush (42) is arranged in a ring on the inner circumferential surface of the connecting ring (41).
5. A high-precision bearing actuator cylinder assembly according to claim 1, characterized in that, The connecting ring 2 (41) is provided with a rubber rod (43), and the mounting ring (2) is provided with a slot (44) for engaging and fixing the rubber rod (43).
6. A high-precision bearing actuator cylinder assembly according to claim 5, characterized in that, The high-precision bearing actuator assembly also includes a bolt (45) that passes through the mounting ring (2) to fasten the mounting ring (2) to the actuator body (1).
7. A high-precision load-bearing actuator cylinder assembly according to claim 1, characterized in that, The telescopic cylinder (31) is connected to a connector (36) at the end away from the actuating cylinder body (1).
8. A high-precision bearing actuator cylinder assembly according to claim 1, characterized in that, The stiffening plate (32) is a plate-shaped structure distributed along the axial direction of the telescopic cylinder (31).