Electro-hydraulic servo actuator

Abstract

The utility model discloses an electro-hydraulic servo actuator, which comprises an electro-hydraulic actuator, a servo motor, a servo motor, a servo motor and a servo motor, wherein the electro-hydraulic actuator is provided with a push rod; the utility model discloses a foreign matter processing unit for cleaning foreign matters on the surface of a push rod, and a motion linkage unit, and aims to solve the problem that in the prior art, when a common electro-hydraulic servo actuator is used outdoors, especially in a building environment, foreign matters and dust in the environment are more and are easily assisted on the surface of the push rod. The foreign matter processing unit and the movement linkage unit are designed, and through cooperative use of the foreign matter processing unit and the movement linkage unit, when the push rod performs telescopic movement, the foreign matter processing unit can be automatically driven to clean auxiliary foreign matters on the surface of the push rod; therefore, the problems of abrasion damage and abnormal sound and vibration caused by the fact that foreign matter is attached to the push rod are solved, and the push rod is particularly suitable for being used in outdoor environments with much foreign matter and dust.

Description

Technical Field

[0001] The present application relates to an electro-hydraulic servo actuator. Background Art

[0002] Electro-hydraulic servo actuator, as a hydraulic actuator, plays an important role in the field of industrial automation and precision control. Electro-hydraulic servo actuator is a device that can convert hydraulic energy into mechanical energy. It can achieve precise control of the speed, direction, displacement and force of the load through servo control according to the instructions of the main controller.

[0003] The existing patent document "CN209261933U A type of electro-hydraulic servo actuator for resisting lateral force" discloses an electro-hydraulic servo actuator. Although the electro-hydraulic servo actuator in the above technical solution can be used, when applied to outdoor construction scenes, especially in environments with a lot of dust and foreign matter, foreign matter and dust are easily attached to the surface of the push rod of the electro-hydraulic servo actuator. The foreign matter may act as abrasive particles during the movement of the push rod, causing wear on the push rod and its surrounding components (such as bearings, guide rails, etc.), shortening the service life of these components, and the friction between the foreign matter and the push rod or surrounding components may produce abnormal noise, which not only affects the working environment, but also may cover up the sound signals of other potential faults;

[0004] That is, the prior art has the following technical problems: when ordinary electro-hydraulic servo actuators are used in an environment with a lot of dust and foreign matter, dust and foreign matter are easily attached to the push rod, causing wear and abnormal noise, etc. Therefore, an electro-hydraulic servo actuator is proposed to address the above problems. Summary of the invention

[0005] In this embodiment, an electro-hydraulic servo actuator is provided to solve the problem that ordinary electro-hydraulic servo actuators in the prior art are easily attached to the push rod when used in an environment with a lot of dust and foreign matter, causing wear and abnormal noise.

[0006] According to one aspect of the present application, an electro-hydraulic servo actuator is provided, the electro-hydraulic servo actuator comprising:

[0007] An electro-hydraulic actuator, wherein a push rod is provided at the electro-hydraulic actuator;

[0008] A foreign matter treatment unit for cleaning foreign matter on the push rod surface, wherein the foreign matter treatment unit is fixedly arranged at the front end of the electro-hydraulic actuator and sleeved on the push rod;

[0009] A motion linkage unit, wherein the motion linkage unit is fixedly arranged at a side position of the electro-hydraulic actuator, the motion linkage unit is connected to the foreign object handling unit, the motion linkage unit can automatically move when the push rod is extended or retracted, and the motion linkage unit can drive the foreign object handling unit to rotate.

[0010] Furthermore, the foreign matter processing unit comprises an annular rotating sleeve, a fixed bracket and a cleaning part. The annular rotating sleeve is arranged on the outer surface of the push rod, and the cleaning part is fixedly arranged on the arc-shaped inner wall of the annular rotating sleeve.

[0011] Furthermore, the cleaning part is a rubber sheet.

[0012] Furthermore, the rubber sheet is spiral-shaped, and a plurality of the rubber sheets are provided, and the plurality of the rubber sheets are fixed in an annular shape on the arc-shaped inner wall of the annular rotating sleeve.

[0013] Furthermore, an annular guide groove is opened on the side wall of the annular rotating sleeve, and three fixed brackets are provided. One end of the three fixed brackets is fixed at the electro-hydraulic actuator, and limiting cylinders are fixedly connected on both sides of the fixed bracket. The limiting cylinders extend to the annular guide groove and slide in cooperation with the annular guide groove.

[0014] Furthermore, a tooth groove is fixedly connected to the arc surface of the annular rotating sleeve.

[0015] Furthermore, the motion linkage unit includes a fixed shell, a connecting bracket, a rack, a first rotating rod, a first gear, a first bevel gear, a second rotating rod, a second gear and a second bevel gear. The outer wall of the fixed shell is fixedly connected to the connecting bracket, and the connecting bracket is fixedly arranged at the side position of the electro-hydraulic actuator.

[0016] Furthermore, an inner cavity is provided inside the fixed shell, a rack is slidably connected to the fixed shell, one end of the rack is fixedly connected to a connecting frame, one end of the connecting frame is fixedly connected to a fixing sleeve, and the fixing sleeve is fixedly provided at the front end position of the push rod.

[0017] Furthermore, a first rotating rod is rotatably connected in the inner cavity of the fixed shell, a first gear is fixedly connected to the arc-shaped wall of the first rotating rod, and the first gear is meshed with the rack.

[0018] Furthermore, a second rotating rod is rotatably connected in the inner cavity of the fixed shell, a second bevel gear is fixedly connected at one end of the second rotating rod, a first bevel gear is fixedly connected at the top end of the first rotating rod, the first bevel gear and the second bevel gear are meshed with each other, a second gear is fixedly connected at the arc-shaped wall of the second rotating rod, and the second gear and the tooth groove are meshed with each other.

[0019] Through the above-mentioned embodiments of the present application, in order to solve the problem in the prior art that when ordinary electro-hydraulic servo actuators are used outdoors, especially in construction environments, due to the large amount of foreign matter and dust in the environment, they are easily attached to the surface of the push rod, the present application designs a foreign matter handling unit and a motion linkage unit. Through the coordinated use of the foreign matter handling unit and the motion linkage unit, the foreign matter handling unit can be automatically driven to clean the foreign matter attached to the surface of the push rod when the push rod is telescopically moved, thereby avoiding the wear and damage caused by foreign matter attached to the push rod and the problem of abnormal sound and vibration. It is particularly suitable for use in outdoor environments with a lot of foreign matter and dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of a three-dimensional structure of an embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the overall structure of a foreign matter processing unit according to an embodiment of the present application;

[0024] Figure 4 A schematic cross-sectional structure diagram of a foreign matter handling unit according to an embodiment of the present application;

[0025] Figure 5 A connection diagram of a motion linkage unit according to an embodiment of the present application;

[0026] Figure 6 A schematic cross-sectional view of a motion linkage unit according to an embodiment of the present application.

[0027] In the figure:

[0028] Electro-hydraulic actuator 1, push rod 2;

[0029] Foreign matter treatment unit 3, annular rotating sleeve 301, annular guide groove 302, fixed bracket 303, limiting cylinder 304, tooth groove 305, cleaning part 306;

[0030] Motion linkage unit 4, fixed shell 401, connecting tripod 402, rack 403, first rotating rod 404, first gear 405, first bevel gear 406, second rotating rod 407, second gear 408, second bevel gear 409;

[0031] Fixed sleeve 5, connecting frame 6. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0035] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0036] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] See also Figure 1-6 As shown, the electro-hydraulic servo actuator comprises:

[0038] An electro-hydraulic actuator 1, wherein a push rod 2 is provided at the electro-hydraulic actuator 1;

[0039] A foreign matter treatment unit 3 for cleaning foreign matter on the surface of the push rod 2, wherein the foreign matter treatment unit 3 is fixedly arranged at the front end of the electro-hydraulic actuator 1, and the foreign matter treatment unit 3 is sleeved on the push rod 2;

[0040] A motion linkage unit 4, wherein the motion linkage unit 4 is fixedly arranged at a side position of the electro-hydraulic actuator 1, and is connected to the foreign matter handling unit 3. The motion linkage unit 4 can automatically move when the push rod 2 is extended or retracted, and the motion linkage unit 4 can drive the foreign matter handling unit 3 to rotate;

[0041] In order to solve the problem in the prior art that when ordinary electro-hydraulic servo actuators are used outdoors, especially in construction environments, there is a lot of foreign matter and dust in the environment, which is easy to adhere to the surface of the push rod 2, the present application designs a foreign matter handling unit 3 and a motion linkage unit 4. Through the coordinated use of the foreign matter handling unit 3 and the motion linkage unit 4, the foreign matter handling unit 3 can be automatically driven to clean the foreign matter attached to the surface of the push rod 2 when the push rod 2 performs telescopic movement, thereby avoiding the wear and damage caused by foreign matter attached to the push rod and the problem of abnormal sound and vibration. It is particularly suitable for use in outdoor environments with a lot of foreign matter and dust.

[0042] The foreign matter treatment unit 3 includes an annular rotating sleeve 301, a fixed bracket 303 and a cleaning portion 306. The annular rotating sleeve 301 is sleeved on the outer surface of the push rod 2. The cleaning portion 306 is fixedly arranged on the arc-shaped inner wall of the annular rotating sleeve 301. According to the technical solution, when the push rod 2 moves, the outer surface of the push rod 2 can be cleaned by the cleaning portion 306.

[0043] The cleaning portion 306 is a rubber sheet.

[0044] The rubber sheet is spiral-shaped, and a plurality of the rubber sheets are provided, and the plurality of the rubber sheets are annularly fixed on the arc-shaped inner wall of the annular rotating sleeve 301. Through the technical solution, the spiral-shaped rubber sheet can better fit the arc-shaped outer wall of the push rod 2, and when the spiral-shaped rubber sheet rotates, the foreign matter and dust adhering to the arc-shaped surface of the push rod 2 can be fully cleaned, further improving the cleaning effect. Compared with ordinary cleaning tools such as cleaning brushes, the spiral-shaped rubber sheet is more suitable for cleaning the arc-shaped surface of the push rod 2, making the cleaning more thorough.

[0045] An annular guide groove 302 is provided on the side wall of the annular rotating sleeve 301, and three fixed brackets 303 are provided, one end of each of the three fixed brackets 303 is fixed to the electro-hydraulic actuator 1, and both sides of the fixed bracket 303 are fixedly connected to limit cylinders 304, and the limit cylinders 304 extend to the annular guide groove 302 and slide with the annular guide groove 302. Through the technical solution, the annular rotating sleeve 301 can be made to have a rotating function through the sliding cooperation between the limit cylinder 304 and the annular guide groove 302; the arc surface of the annular rotating sleeve 301 is fixedly connected with tooth grooves 305;

[0046] The motion linkage unit 4 includes a fixed shell 401, a connecting bracket 402, a rack 403, a first rotating rod 404, a first gear 405, a first bevel gear 406, a second rotating rod 407, a second gear 408 and a second bevel gear 409. The connecting bracket 402 is fixedly connected to the outer wall of the fixed shell 401, and the connecting bracket 402 is fixedly arranged at the side position of the electro-hydraulic actuator 1.

[0047] The fixed shell 401 is provided with an inner cavity, and a rack 403 is slidably connected to the fixed shell 401. A connecting frame 6 is fixedly connected to one end of the rack 403. A fixing sleeve 5 is fixedly connected to one end of the connecting frame 6. The fixing sleeve 5 is fixedly arranged at the front end of the push rod 2.

[0048] A first rotating rod 404 is rotatably connected in the inner cavity of the fixed shell 401, and a first gear 405 is fixedly connected to the arc-shaped wall of the first rotating rod 404. The first gear 405 and the rack 403 are meshed with each other. According to the technical solution, when the rack 403 moves in the inner cavity of the fixed shell 401, the movement of the rack 403 can drive the first gear 405 to rotate, thereby driving the first rotating rod 404 to rotate;

[0049] A second rotating rod 407 is rotatably connected in the inner cavity of the fixed shell 401, and a second bevel gear 409 is fixedly connected to one end of the second rotating rod 407. A first bevel gear 406 is fixedly connected to the top of the first rotating rod 404, and the first bevel gear 406 and the second bevel gear 409 are meshed with each other. A second gear 408 is fixedly connected to the arc wall of the second rotating rod 407, and the second gear 408 and the tooth groove 305 are meshed with each other. According to the technical solution, when the push rod 2 moves, the movement of the push rod 2 can drive the rack 403 to move, so that the movement of the rack 403 can drive The first gear 405 rotates, thereby driving the first rotating rod 404 to rotate, thereby driving the first bevel gear 406 to rotate. The rotation of the first bevel gear 406 can drive the second bevel gear 409 to rotate, thereby driving the second rotating rod 407 to rotate, thereby driving the second gear 408 to rotate through the second rotating rod 407, and then driving the tooth groove 305 to rotate, thereby driving the annular rotating sleeve 301 to rotate. The rotation of the annular rotating sleeve 301 can drive the cleaning part 306 to rotate, thereby cleaning foreign matter and dust on the surface of the push rod 2, achieving the beneficial effect of automatic cleaning.

[0050] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art, and needless to say, the content protected by this application does not involve improvements to software and methods.

[0051] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Electro-hydraulic servo actuator, characterized in that: The electro-hydraulic servo actuator comprises: An electro-hydraulic actuator (1), wherein a push rod (2) is provided at the electro-hydraulic actuator (1); A foreign matter treatment unit (3) for cleaning foreign matter on the surface of the push rod (2), wherein the foreign matter treatment unit (3) is fixedly arranged at the front end of the electro-hydraulic actuator (1), and the foreign matter treatment unit (3) is sleeved on the push rod (2); A motion linkage unit (4), wherein the motion linkage unit (4) is fixedly arranged at a side position of the electro-hydraulic actuator (1), the motion linkage unit (4) is connected to the foreign matter handling unit (3), the motion linkage unit (4) can automatically move when the push rod (2) is extended or retracted, and the motion linkage unit (4) can drive the foreign matter handling unit (3) to rotate.

2. The electro-hydraulic servo actuator according to claim 1, characterized in that: The foreign matter processing unit (3) comprises an annular rotating sleeve (301), a fixed bracket (303) and a cleaning portion (306); the annular rotating sleeve (301) is sleeved on the outer surface of the push rod (2); and the cleaning portion (306) is fixedly provided on the arc-shaped inner wall of the annular rotating sleeve (301).

3. The electro-hydraulic servo actuator according to claim 2, characterized in that: The cleaning portion (306) is a rubber sheet.

4. The electro-hydraulic servo actuator according to claim 3, characterized in that: The rubber sheet is spiral-shaped, and a plurality of the rubber sheets are provided. The plurality of rubber sheets are fixed in an annular shape on the arc-shaped inner wall of the annular rotating sleeve (301).

5. The electro-hydraulic servo actuator according to claim 2, characterized in that: An annular guide groove (302) is provided on the side wall of the annular rotating sleeve (301), and three fixed brackets (303) are provided. One end of each of the three fixed brackets (303) is fixed to the electro-hydraulic actuator (1), and both sides of the fixed bracket (303) are fixedly connected to a limiting cylinder (304), and the limiting cylinder (304) extends to the annular guide groove (302) and is slidably matched with the annular guide groove (302).

6. The electro-hydraulic servo actuator according to claim 2, characterized in that: A tooth groove (305) is fixedly connected to the arc surface of the annular rotating sleeve (301).

7. The electro-hydraulic servo actuator according to claim 1, characterized in that: The motion linkage unit (4) comprises a fixed shell (401), a connecting bracket (402), a rack (403), a first rotating rod (404), a first gear (405), a first bevel gear (406), a second rotating rod (407), a second gear (408) and a second bevel gear (409); the connecting bracket (402) is fixedly connected to the outer wall of the fixed shell (401); and the connecting bracket (402) is fixedly arranged at a side position of the electro-hydraulic actuator (1).

8. The electro-hydraulic servo actuator according to claim 7, characterized in that: An inner cavity is provided inside the fixed shell (401), a rack (403) is slidably connected to the fixed shell (401), one end of the rack (403) is fixedly connected to a connecting frame (6), one end of the connecting frame (6) is fixedly connected to a fixing sleeve (5), and the fixing sleeve (5) is fixedly arranged at the front end of the push rod (2).

9. The electro-hydraulic servo actuator according to claim 7, characterized in that: A first rotating rod (404) is rotatably connected in the inner cavity of the fixed shell (401), a first gear (405) is fixedly connected to the arc-shaped wall of the first rotating rod (404), and the first gear (405) and the rack (403) are meshed with each other.

10. The electro-hydraulic servo actuator according to claim 7, characterized in that: A second rotating rod (407) is rotatably connected in the inner cavity of the fixed shell (401); a second bevel gear (409) is fixedly connected at one end of the second rotating rod (407); a first bevel gear (406) is fixedly connected at the top end of the first rotating rod (404); the first bevel gear (406) and the second bevel gear (409) are meshed with each other; a second gear (408) is fixedly connected at the arc-shaped wall of the second rotating rod (407); the second gear (408) and the tooth groove (305) are meshed with each other.

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