Electro-hydraulic push rod

Abstract

The utility model relates to hydraulic pusher technical field especially relates to a kind of electrohydraulic push rod.The electrohydraulic push rod includes electrohydraulic push rod body, the end part of piston rod in electrohydraulic push rod body is equipped with the connector of fixed connection, and the electrohydraulic push rod body is equipped with the protection assembly for covering piston rod;The protection assembly includes mounting disc and mounting ring, the mounting disc is fixedly connected between connector, the mounting ring is fixedly covered in electrohydraulic push rod body, and the mounting disc and mounting ring between erecting are equipped with the corrugated protective cover of fixed connection.The electrohydraulic push rod provided by the utility model, when using, the piston rod of extension can drive corrugated protective cover synchronous expansion, and then the outer wall of piston rod can be covered and protected, so floating object can be shielded to reduce floating dust particles in air on the outer wall of piston rod stick, the influence caused to electrohydraulic push rod body.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic actuator technology, and in particular to an electro-hydraulic actuator. Background Technology

[0002] Electro-hydraulic actuators are hydraulically driven manipulators that integrate mechanics, electricity, and hydraulics. They are suitable for applications requiring reciprocating linear motion (or reciprocating motion at a certain angle), as well as for applications requiring lifting, lowering, or clamping of workpieces. They can also enable centralized or automatic control in remote hazardous areas, and can be programmed with a computer. They are widely used in industries such as metallurgy, mining, coal, grain, and power.

[0003] When existing electro-hydraulic actuators are in use, dust particles from the air will stick to the exposed outer wall after the piston rod is extended. When the piston rod retracts, the dust particles will accelerate the scratching of the piston rod surface and wear down the sealing lip, thus accelerating the failure of the seal.

[0004] Therefore, it is necessary to provide a new electro-hydraulic actuator to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an electro-hydraulic actuator.

[0006] The electro-hydraulic actuator provided by this utility model includes: an electro-hydraulic actuator body, wherein a connector head is fixedly connected to the end of the piston rod in the electro-hydraulic actuator body, and a protective component for covering the piston rod is provided on the electro-hydraulic actuator body;

[0007] The protective assembly includes a mounting plate and a mounting ring. The mounting plate is fixedly connected to the connector. The mounting ring is fixedly sleeved on the electro-hydraulic actuator body. A corrugated protective cover is fixedly connected between the mounting plate and the mounting ring, and the corrugated protective cover is located outside the piston rod.

[0008] Preferably, the electro-hydraulic actuator body is fitted with symmetrically distributed support semi-rings, two of the support semi-rings are fixedly connected by bolts, and multiple evenly distributed docking blocks are fixedly installed between the support semi-rings.

[0009] Preferably, a rotatably connected guide roller is provided between two adjacent docking blocks, and the outer wall of the guide roller abuts against and is rotatably connected to the outer wall of the electro-hydraulic actuator body.

[0010] Preferably, a through hole is provided inside the mounting ring at the part opposite to the docking block, a docking hole is provided inside the mounting plate at the part opposite to the docking block, and a sliding auxiliary rod is inserted inside the through hole.

[0011] Preferably, both ends of the auxiliary rod are equipped with fixedly connected protruding rods, and the protruding rods at both ends are respectively inserted into the corresponding mating blocks and mating holes and extend to the outside.

[0012] Preferably, the outer side of the protruding rod is fitted with a threaded limiting nut, and the end of the limiting nut abuts against the corresponding mating block and mounting plate.

[0013] Compared with related technologies, the electro-hydraulic actuator provided by this utility model has the following advantages:

[0014] 1. When in use, the extended piston rod can drive the corrugated protective cover to unfold synchronously, thereby covering and protecting the outer wall of the piston rod. This can effectively block floating objects and reduce the adhesion of airborne dust particles to the outer wall of the piston rod, thus minimizing their impact on the electro-hydraulic actuator body.

[0015] 2. By installing auxiliary rods on the mounting plate, the auxiliary rods can move synchronously during the extension and retraction of the piston rod, thereby increasing the lateral support strength of the piston rod after it is extended. The evenly distributed auxiliary rods can also shield the outside of the piston rod, thereby reducing the phenomenon of external parts hitting the piston rod and causing damage to the outer wall of the piston rod during use. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the electro-hydraulic actuator provided by this utility model;

[0017] Figure 2 for Figure 1 A partial cross-sectional structural diagram showing the connection of the connector, protective components, and supporting semi-ring, etc.

[0018] Figure 3 for Figure 2 A schematic cross-sectional view of the connection between the connector and the protective assembly;

[0019] Figure 4 for Figure 2 The diagram shows the structure of the supporting semi-ring and auxiliary rod.

[0020] Figure 5 for Figure 4 The diagram shows the structure of the supporting semi-ring and its components.

[0021] The following are the labels in the diagram: 1. Electro-hydraulic actuator body; 2. Connector; 3. Protective component; 31. Mounting plate; 311. Docking hole; 32. Mounting ring; 321. Through hole; 33. Corrugated protective cover; 4. Support half ring; 41. Docking block; 42. Guide roller; 5. Auxiliary rod; 51. Protruding rod; 52. Limit nut. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] Please see Figures 1 to 5 The present invention provides an electro-hydraulic actuator, which includes an electro-hydraulic actuator body 1.

[0025] In the embodiments of this utility model, please refer to Figures 1 to 5 The piston rod of the electro-hydraulic actuator body 1 is fixedly connected to a connector 2, and the electro-hydraulic actuator body 1 is provided with a protective component 3 to cover the piston rod. The protective component 3 includes a mounting plate 31 and a mounting ring 32. The mounting plate 31 is fixedly connected to the connector 2, and the mounting ring 32 is fixedly sleeved on the electro-hydraulic actuator body 1. A corrugated protective cover 33 is fixedly connected between the mounting plate 31 and the mounting ring 32, and the corrugated protective cover 33 is located outside the piston rod.

[0026] It should be noted that during use, when the piston rod is extended, the corrugated protective cover 33 in the protective assembly 3 can be stretched through the connector 2, so that it can be extended synchronously with the extended piston rod, thereby covering and protecting the outer wall of the piston rod. Therefore, it can block floating objects and reduce the adhesion of airborne dust particles to the outer wall of the piston rod, thus reducing the impact on the electro-hydraulic actuator body 1.

[0027] In the embodiments of this utility model, please refer to Figures 1 to 5 The electro-hydraulic actuator body 1 is fitted with symmetrically distributed support semi-rings 4. The two support semi-rings 4 are fixedly connected by bolts, and multiple evenly distributed docking blocks 41 are fixedly installed between the support semi-rings 4. A rotatably connected guide roller 42 is mounted between two adjacent docking blocks 41, and the outer wall of the guide roller 42 abuts against and rolls against the outer wall of the electro-hydraulic actuator body 1. A through hole 321 is opened in the mounting ring 32 at the part opposite to the docking block 41. A docking hole 311 is opened in the mounting plate 31 at the part opposite to the docking block 41. An auxiliary rod 5 is slidably connected inside the through hole 321. Both ends of the auxiliary rod 5 are fixedly connected with protruding rods 51, and the protruding rods 51 at both ends are inserted into the corresponding docking block 41 and docking hole 311 and extend to the outside. A threaded limit nut 52 is fitted on the outside of the protruding rod 51, and the end of the limit nut 52 abuts against the corresponding docking block 41 and mounting plate 31.

[0028] It should be noted that: through the abutment of the guide roller 42 against the outer wall of the electro-hydraulic actuator, during use, the moving auxiliary rod 5 can drive the guide roller 42 to move synchronously through the support half ring 4. In this process, the moving guide roller 42 can support the end of the auxiliary rod 5 away from the connector 2 by being opposite to the outer wall of the electro-hydraulic actuator, thereby improving the stability of the auxiliary rod 5 and enabling the auxiliary rod 5 to stably improve the lateral support strength of the piston rod.

[0029] The working principle of the electro-hydraulic actuator provided by this utility model is as follows:

[0030] When the device is installed in the required position, the electro-hydraulic actuator can be extended as needed. The extended electro-hydraulic actuator body 1 can drive the mounting plate 31 and auxiliary rod 5 connected to it to move synchronously through the connector 2.

[0031] During the movement of the mounting plate 31, the corrugated protective cover 33 connected to it can be pulled, so that the corrugated protective cover 33 can be extended synchronously. Therefore, when the piston rod in the electro-hydraulic actuator is unfolded, the unfolded corrugated protective cover 33 can cover and shield the outside of the piston rod, thereby preventing dust particles in the air from adhering to the outer wall of the piston rod and affecting the electro-hydraulic actuator.

[0032] The auxiliary rod 5, pulled by the connector 2, can also slide inside the through hole 321. When unfolded, the ring-shaped auxiliary rod 5 can form a fence structure on the outside of the piston rod, thereby reducing the probability of the unfolded piston rod colliding with external parts and being damaged. At the same time, the ring-shaped auxiliary rod 5 can also increase the lateral support strength of the piston rod, reducing the probability of the piston rod bending and being damaged during use.

[0033] The circuits and controls involved in this utility model are all existing technologies and will not be described in detail here.

[0034] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electro-hydraulic actuator, characterized in that, include: An electro-hydraulic actuator body (1) is provided with a fixedly connected connector (2) installed at the end of the piston rod in the electro-hydraulic actuator body (1), and a protective component (3) is provided on the electro-hydraulic actuator body (1) to cover the piston rod. The protective component (3) includes a mounting plate (31) and a mounting ring (32). The mounting plate (31) is fixedly connected to the connector (2). The mounting ring (32) is fixedly sleeved on the electro-hydraulic actuator body (1). A corrugated protective cover (33) is fixedly connected between the mounting plate (31) and the mounting ring (32), and the corrugated protective cover (33) is located outside the piston rod.

2. The electro-hydraulic actuator according to claim 1, characterized in that, The electro-hydraulic actuator body (1) is fitted with symmetrically distributed support semi-rings (4), and the two support semi-rings (4) are fixedly connected by bolts, and multiple evenly distributed docking blocks (41) are fixedly installed between the support semi-rings (4).

3. The electro-hydraulic actuator according to claim 2, characterized in that, A rotatable guide roller (42) is provided between two adjacent docking blocks (41), and the outer wall of the guide roller (42) abuts against and is rotatably connected to the outer wall of the electro-hydraulic actuator body (1).

4. The electro-hydraulic actuator according to claim 3, characterized in that, The mounting ring (32) has a through hole (321) at the part opposite to the docking block (41), the mounting plate (31) has a docking hole (311) at the part opposite to the docking block (41), and an auxiliary rod (5) with sliding connection is inserted into the through hole (321).

5. The electro-hydraulic actuator according to claim 4, characterized in that, Both ends of the auxiliary rod (5) are equipped with fixedly connected protruding rods (51), and the protruding rods (51) at both ends are respectively inserted into the corresponding docking block (41) and docking hole (311) and extend to the outside.

6. The electro-hydraulic actuator according to claim 5, characterized in that, The protruding rod (51) is fitted with a threaded limiting nut (52), and the end of the limiting nut (52) abuts against the corresponding mating block (41) and mounting plate (31).

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