Servo control mechanism device

Abstract

The utility model relates to the technical field of servo control, in particular to a servo control mechanism device which comprises an electro-hydraulic servo actuator main body, a driving shaft is installed on the electro-hydraulic servo actuator main body in a matched mode, and the electro-hydraulic servo actuator main body is provided with a first sleeve, a second sleeve, a third sleeve and a fourth sleeve. The first sleeve is fixedly connected to the electro-hydraulic servo actuator body, the second sleeve is movably sleeved with the first sleeve, and the second sleeve is used for being sleeved with the driving shaft in a sliding mode. The first sleeve and the second sleeve are used for axially limiting the driving shaft, so that when the driving shaft extends, the first sleeve and the second sleeve can guide and limit the driving shaft in a short distance, and compared with the prior art in which no guiding measure is taken for the driving shaft, the driving shaft can be guided and limited in a short distance. According to the technical scheme, auxiliary supporting is carried out through the first sleeve and the second sleeve, so that the load of the driving shaft is smaller, and the stability of the driving shaft during telescopic movement is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of servo control, in particular to a servo control mechanism device. Background Art

[0002] The single-degree-of-freedom hydraulic anti-seismic simulation vibration table needs to use an electro-hydraulic servo actuator as the power source of the vibration table during operation. The electro-hydraulic servo actuator is a hydraulic actuator that can convert the hydraulic energy from the hydraulic source into mechanical energy. It can also be servo-controlled through the displacement sensor or travel switch provided by the product as needed.

[0003] When the existing electro-hydraulic servo actuator drives other components of the vibration table, the vibration table will vibrate, and no corresponding shock-absorbing structure is provided on the drive shaft of the electro-hydraulic servo actuator. As a result, the drive shaft on the electro-hydraulic servo actuator will be affected by the vibration and shake during operation, resulting in increased losses during the operation of the electro-hydraulic servo actuator and a negative impact on the service life of the electro-hydraulic servo actuator. Summary of the invention

[0004] The utility model aims to solve the problem in the prior art that the driving shaft on the electro-hydraulic servo actuator will vibrate due to vibration, which has a negative impact on the service life of the electro-hydraulic servo actuator, and proposes a servo control mechanism device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A servo control mechanism device comprises an electro-hydraulic servo actuator body, and a driving shaft is mounted on the electro-hydraulic servo actuator body, and the electro-hydraulic servo actuator body is provided with:

[0007] A first sleeve and a second sleeve, wherein the first sleeve is fixedly connected to the main body of the electro-hydraulic servo actuator, the second sleeve is movably sleeved in the first sleeve, and the second sleeve is used for slidingly sleeved the drive shaft;

[0008] A shock absorbing assembly is arranged in the second sleeve, and the shock absorbing assembly is used for shock absorbing and protecting the drive shaft.

[0009] Preferably, the first sleeve and the second sleeve are both hollow cylindrical structures with one end open, and the second sleeve is fixedly connected to a limiting clamp ring that slides against the inner wall of the first sleeve.

[0010] Preferably, the shock absorbing assembly comprises:

[0011] A resistance ring, the resistance ring is fixedly sleeved on the driving shaft, and the resistance ring movably resists against the top end of the second sleeve;

[0012] A mounting ring and a contact ball, wherein the mounting ring is fixedly connected to the inner wall of the second sleeve, and the contact ball is movably embedded in the mounting ring. At least four contact balls are provided, and one end of the contact ball movably contacts the contact ring;

[0013] The damper, the clamping plate and the limiting ball, the damper is fixedly installed on the inner wall of the second sleeve, the clamping plate is fixedly connected to the output end of the damper, and the limiting ball is movably embedded on the side of the clamping plate away from the damper.

[0014] Preferably, the mounting ring is arranged at the inner end of the interference ring, and the mounting ring and the interference ring are coaxially arranged, and the interference balls are equidistantly arranged on the mounting ring in the circumferential direction.

[0015] Preferably, two groups of the dampers and the clamping plates are provided, and the two groups of the dampers and the clamping plates are symmetrically arranged at both sides of the driving shaft.

[0016] Preferably, the clamping plate is an arc-shaped structure, and the limiting ball and the driving shaft are movably opposed to each other.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. In the utility model, the first sleeve and the second sleeve are used to limit the axial position of the drive shaft, so that when the drive shaft is extended, the first sleeve and the second sleeve can realize the guiding and limiting of the drive shaft at a close distance. Compared with the prior art that does not take any guiding measures for the drive shaft, the first sleeve and the second sleeve are used for auxiliary support in the technical solution, so that the load on the drive shaft is smaller, which helps to improve the stability of the drive shaft during telescopic movement.

[0019] 2. In the utility model, the vibration force generated by the external influence on the operation of the drive shaft is consumed through the multi-dimensional movement of the resistance ball and the limit ball and the damping force of the damper, thereby ensuring the stability of the drive shaft during operation, which helps to extend the service life of the electro-hydraulic servo actuator body and the drive shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a servo control mechanism device proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the connection structure of a driving shaft, a first sleeve and a second sleeve of a servo control mechanism device proposed by the utility model;

[0022] Figure 3 For this utility model Figure 2 A cross-sectional view of

[0023] Figure 4The utility model discloses a schematic diagram of the connection structure between a clamping plate and a limiting ball of a servo control mechanism device.

[0024] In the figure: 1. electro-hydraulic servo actuator body; 2. drive shaft; 3. first sleeve; 4. second sleeve; 5. resistance ring; 6. mounting ring; 7. resistance ball; 8. damper; 9. clamping plate; 10. limit ball. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1-Figure 4 A servo control mechanism device includes an electro-hydraulic servo actuator body 1, and a driving shaft 2 is mounted on the electro-hydraulic servo actuator body 1. A first sleeve 3, a second sleeve 4 and a shock absorbing assembly are arranged on the electro-hydraulic servo actuator body 1. The components are arranged as follows:

[0027] The first sleeve 3 is fixedly connected to the electro-hydraulic servo actuator body 1, and the second sleeve 4 is movably sleeved in the first sleeve 3. The first sleeve 3 is used to guide and limit the second sleeve 4, and provide a movable space for the horizontal telescopic movement of the second sleeve 4. The second sleeve 4 is used for slidingly sleeved on the drive shaft 2, and the second sleeve 4 is used to guide and limit the drive shaft 2, and provide a movable space for the horizontal telescopic movement of the drive shaft 2. The first sleeve 3 and the second sleeve 4 are both hollow cylindrical structures with one end open. A limiting clamp ring that slides against the inner wall of the first sleeve 3 is fixedly connected to the second sleeve 4, so that when the limiting clamp ring contacts the first sleeve 3 in the horizontal direction, the second sleeve 4 will drive the first sleeve 3 to move synchronously when it moves. It should be noted that: at least two groups of sleeve structures are provided, and the specific number of sleeve structures needs to be arranged according to the movement stroke of the drive shaft 2;

[0028] The shock absorbing assembly is arranged in the second sleeve 4, and is used to provide shock absorbing protection for the drive shaft 2, thereby reducing the loss of the drive shaft 2 due to external factors, and helping to extend the service life of the drive shaft 2 and the electro-hydraulic servo actuator body 1;

[0029] A further implementation method is that the shock absorbing assembly includes a resistance ring 5, a mounting ring 6, a resistance ball 7, a damper 8, a clamping plate 9 and a limiting ball 10, and the components are arranged as follows:

[0030] The abutment ring 5 is fixedly sleeved on the driving shaft 2, and the abutment ring 5 movably abuts against the top end of the second sleeve 4;

[0031] The mounting ring 6 is fixedly connected to the inner wall of the second sleeve 4. The mounting ring 6 is arranged at the inner end of the contact ring 5, and the mounting ring 6 and the contact ring 5 are arranged coaxially. The contact ball 7 is movably embedded in the mounting ring 6. At least four contact balls 7 are arranged, and one end of the contact ball 7 is movably abutted against the contact ring 5. The contact balls 7 are equidistantly arranged on the mounting ring 6 in the circumferential direction. The contact ring 5 is limited by the contact balls 7, so as to limit the drive shaft 2 in the vertical direction. The horizontal limit of the drive shaft 2 by the second sleeve 4 is helpful to improve the stability of the drive shaft 2 when performing horizontal telescopic movement.

[0032] The damper 8 is fixedly installed on the inner wall of the second sleeve 4, the clamping plate 9 is fixedly connected to the output end of the damper 8, and the limiting ball 10 is movably embedded on the side of the clamping plate 9 away from the damper 8. The damper 8 and the clamping plate 9 are provided with two groups, and the two groups of dampers 8 and the clamping plates 9 are symmetrically arranged on both sides of the drive shaft 2. The clamping plate 9 is an arc-shaped structure, and the limiting ball 10 and the drive shaft 2 are movably opposed to each other. The multi-dimensional rolling of the limiting ball 10 is utilized so that the limiting ball 10 does not cause motion interference to the rotation of the drive shaft 2.

[0033] It should be noted that the specific model and specifications of the damper 8 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it is not repeated here.

[0034] The functional principle of the utility model can be explained through the following operation modes:

[0035] The electro-hydraulic servo actuator body 1 drives the drive shaft 2 to extend outward, the drive shaft 2 drives the abutment ring 5 to extend outward horizontally, the abutment ring 5 drives the second sleeve 4 to extend outward horizontally, and when the limit clamp ring on the second sleeve 4 slides against the inner wall of the outer end of the first sleeve 3, the second sleeve 4 drives the first sleeve 3 to extend outward horizontally;

[0036] When the drive shaft 2 on the electro-hydraulic servo actuator body 1 is operating, the force transmitted from the drive shaft 2 to the mounting ring 6 is offset by the multi-dimensional movement of the resistance ball 7, and the setting of the limit ball 10 and the clamping plate 9 allows the drive shaft 2 to transmit the vibration force to the damper 8 through the limit ball 10 and the clamping plate 9, so that the vibration force can be consumed by the damper 8, which helps to ensure the stability of the drive shaft 2 during operation.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A servo control mechanism device, comprising an electro-hydraulic servo actuator body (1), wherein a drive shaft (2) is mounted on the electro-hydraulic servo actuator body (1), characterized in that: The electro-hydraulic servo actuator body (1) is provided with: A first sleeve (3) and a second sleeve (4), wherein the first sleeve (3) is fixedly connected to the electro-hydraulic servo actuator body (1), the second sleeve (4) is movably sleeved in the first sleeve (3), and the second sleeve (4) is used for slidably sleeved on the drive shaft (2); A shock absorbing component, wherein the shock absorbing component is arranged in the second sleeve (4), and the shock absorbing component is used to provide shock absorbing protection for the drive shaft (2).

2. A servo control mechanism device according to claim 1, characterized in that: The first sleeve (3) and the second sleeve (4) are both hollow cylindrical structures with one end open, and the second sleeve (4) is fixedly connected to a limit clamp ring that slides against the inner wall of the first sleeve (3).

3. A servo control mechanism device according to claim 1, characterized in that: The shock absorbing assembly comprises: A resistance ring (5), the resistance ring (5) is fixedly sleeved on the driving shaft (2), and the resistance ring (5) movably resists against the top end of the second sleeve (4); A mounting ring (6) and a contact ball (7), wherein the mounting ring (6) is fixedly connected to the inner wall of the second sleeve (4), and the contact ball (7) is movably embedded in the mounting ring (6). At least four contact balls (7) are provided, and one end of the contact ball (7) movably contacts the contact ring (5); A damper (8), a clamping plate (9) and a limiting ball (10), wherein the damper (8) is fixedly mounted on the inner wall of the second sleeve (4), the clamping plate (9) is fixedly connected to the output end of the damper (8), and the limiting ball (10) is movably embedded on a side of the clamping plate (9) away from the damper (8).

4. A servo control mechanism device according to claim 3, characterized in that: The mounting ring (6) is arranged at the inner end of the abutment ring (5), and the mounting ring (6) and the abutment ring (5) are arranged coaxially, and the abutment balls (7) are arranged equidistantly on the mounting ring (6) in the circumferential direction.

5. A servo control mechanism device according to claim 3, characterized in that: Two groups of the damper (8) and the clamping plate (9) are provided, and the two groups of the damper (8) and the clamping plate (9) are symmetrically arranged at two sides of the drive shaft (2).

6. A servo control mechanism device according to claim 3, characterized in that: The clamping plate (9) is an arc-shaped structure, and the limiting ball (10) movably abuts against the driving shaft (2).

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