Hydraulic actuator with self-locking structure

Abstract

The utility model provides a hydraulic actuator with a self-locking structure, and relates to the field of hydraulic actuators, the number of moving assemblies is two, the outer sides of the two moving assemblies are both oppositely and fixedly connected with two sliding blocks of protruding structures, the top end faces of the two moving assemblies are both fixedly connected with limiting frames of L-shaped structures, and the limiting frames are fixedly connected with the sliding blocks. The problem that when an existing hydraulic actuator is used, after the hydraulic actuator outputs a certain distance, in order to ensure the stability of lifted equipment and output power, a corresponding self-locking structure needs to be used for limiting and supporting the hydraulic actuator is solved. When the limiting device is used, the moving assembly and the limiting frame can be pushed towards one side of the limiting plate through the servo push rod, efficient limiting operation is achieved through contact clamping of the limiting frame and the limiting plate, and then the purpose of being more practical is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic actuators, and specifically relates to a hydraulic actuator with a self-locking structure. Background Technology

[0002] Currently, hydraulic actuators are devices that use hydraulic power transmission. The output driving force of hydraulic actuators is higher than that of pneumatic and electric actuators. Moreover, the output torque of hydraulic actuators can be precisely adjusted according to requirements and reflected through hydraulic instruments. The transmission of hydraulic actuators is more stable and reliable, with buffering and no impact phenomenon. They are suitable for working environments with high transmission requirements. Hydraulic actuators have high adjustment accuracy and fast response speed, and can achieve high-precision control.

[0003] However, when existing hydraulic actuators are used, in order to ensure the stability of the supported equipment and the output power after outputting a certain distance, a corresponding self-locking structure is required to limit and support the hydraulic actuator. Therefore, a hydraulic actuator with a self-locking structure is proposed.

[0004] Therefore, in view of the shortcomings of the above-mentioned solutions in actual production and implementation, modifications and improvements have been made. At the same time, in the spirit and concept of seeking excellence, and with the assistance of professional knowledge and experience, and after much ingenuity and experimentation, this utility model was created. It provides a hydraulic actuator with a self-locking structure to solve the problem that existing hydraulic actuators, when in use, require a corresponding self-locking structure to limit and support the hydraulic actuator in order to ensure the stability of the supported equipment and the output power after outputting a certain distance. Summary of the Invention

[0005] This utility model proposes a hydraulic actuator with a self-locking structure, which solves the problem that existing hydraulic actuators require a corresponding self-locking structure to limit and support the hydraulic actuator after it has been used for a certain distance, in order to ensure the stability of the supported equipment and the output power.

[0006] The technical solution of this utility model is implemented as follows: a hydraulic actuator with a self-locking structure includes a cylinder mechanism, the cylinder mechanism is a hollow structure, the top of the cylinder mechanism is covered with a disc-shaped shielding mechanism, and the interior of the shielding mechanism has two positioning holes that are bidirectionally connected on the upper and lower sides in a linear array.

[0007] A fixing bolt is screwed into the positioning hole. The fixing bolt is used to connect the shielding mechanism and the cylinder mechanism. Two horizontal grooves are opened opposite each other on the top surface of the shielding mechanism. A servo push rod is fixedly connected inside the horizontal groove. A rectangular block structure moving component is fixedly connected to the inner side of the servo push rod. There are two moving components. Two sliders with protruding structures are fixedly connected opposite each other on the outer side of the two moving components. An L-shaped limiting frame is fixedly connected to the top surface of the two moving components.

[0008] In a preferred embodiment, the bottom of the outer peripheral surface of the cylinder mechanism is fixedly connected to three mounting components in a ring array.

[0009] In a preferred embodiment, all three mounting components have bidirectional through mounting holes on both the top and bottom sides.

[0010] In a preferred embodiment, limit holes are provided on both the front and rear sides of the top surface of the cylinder block mechanism, and an oil supply pipe is fixedly connected to the left side of the outer peripheral surface of the cylinder block mechanism.

[0011] In a preferred embodiment, the oil supply pipe is connected to the cylinder block mechanism, and an oil supply flange is fixedly connected to the side of the oil supply pipe away from the cylinder block mechanism.

[0012] In a preferred embodiment, the oil supply flange has mounting holes arranged in a ring array inside.

[0013] In a preferred embodiment, a piston mechanism is installed inside the cylinder mechanism, and two annular sealing components are fixedly connected in a linear array on the outer circumferential surface of the piston mechanism.

[0014] In a preferred embodiment, the piston mechanism has a circular cross-section, and the outer wall of the piston mechanism is in contact with the inner wall of the cylinder mechanism.

[0015] In a preferred embodiment, a longitudinally arranged output rod is fixedly connected to the center position of the top surface of the piston mechanism.

[0016] In a preferred embodiment, longitudinal grooves are provided on both the left and right sides of the outer peripheral surface of the output rod, and a limiting plate is fixedly connected inside the longitudinal groove.

[0017] After using the above technical solution, the beneficial effects of this utility model are:

[0018] 1. In this utility model, by providing a servo push rod fixedly connected in the shielding mechanism, when in use, the moving component and the limiting frame can be pushed towards one side of the limiting plate by the servo push rod. The contact engagement between the limiting frame and the limiting plate is used to achieve efficient limiting operation, thereby achieving a more practical purpose.

[0019] 2. In this utility model, a sealing assembly is fixedly connected to the outside of the piston mechanism. There are two sealing assemblies, which are fixedly connected in a linear array to the upper and lower sides of the outer circumference of the piston mechanism. Therefore, when the piston mechanism is moving, the sealing assembly can perform a sealing operation, thereby improving the overall practicality of the device. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional front view of the hydraulic actuator of this utility model.

[0022] Figure 2 This is a top view of the hydraulic actuator of this utility model.

[0023] Figure 3 This is a schematic diagram of the combined structure of the piston mechanism and sealing assembly of the hydraulic actuator of this utility model;

[0024] Figure 4 This is a schematic diagram of the combined structure of the cylinder body mechanism and mounting components of the hydraulic actuator of this utility model;

[0025] Figure 5 This is a schematic diagram of the combined structure of the shielding mechanism and the positioning hole of the hydraulic actuator of this utility model;

[0026] Figure 6 This is a front view structural diagram of the hydraulic actuator of this utility model;

[0027] In the diagram, 1 is the cylinder block mechanism; 101 is the mounting component; 1011 is the mounting hole; 1012 is the limit hole; 102 is the oil supply pipe; 1021 is the oil supply flange; 1022 is the assembly hole; 2 is the piston mechanism; 201 is the sealing component; 202 is the output rod; 2021 is the limit plate; 3 is the shielding mechanism; 301 is the positioning hole; 3011 is the fixing bolt; 302 is the servo push rod; 3021 is the moving component; 3022 is the slider; and 3023 is the limit bracket. Detailed Implementation

[0028] 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.

[0029] like Figures 1-6 As shown, a hydraulic actuator with a self-locking structure includes: a cylinder body mechanism 1, which is a hollow internal structure, and a disc-shaped shielding mechanism 3 covering the top of the cylinder body mechanism 1. The shielding mechanism 3 has two positioning holes 301 that are bidirectionally connected on the upper and lower sides in a linear array inside.

[0030] A fixing bolt 3011 is screwed into the positioning hole 301. The fixing bolt 3011 is used to connect the shielding mechanism 3 and the cylinder mechanism 1. Two transverse grooves are opened opposite each other on the top surface of the shielding mechanism 3. A servo push rod 302 is fixedly connected inside the transverse groove. A rectangular block structure moving component 3021 is fixedly connected to the inner side of the servo push rod 302. There are two moving components 3021. Two sliders 3022 with protruding structures are fixedly connected opposite each other on the outer side of the two moving components 3021. An L-shaped limit frame 3023 is fixedly connected to the top surface of the two moving components 3021. Longitudinal grooves are opened on the left and right sides of the outer peripheral surface of the output rod 202. A limit plate 2021 is fixedly connected inside the longitudinal groove.

[0031] Among them, the bottom of the outer peripheral surface of the cylinder mechanism 1 is fixedly connected to three mounting components 101 in a ring array, and the interior of each of the three mounting components 101 is provided with mounting holes 1011 that pass through both the upper and lower sides.

[0032] Limiting holes 1012 are provided on both the front and rear sides of the top surface of the cylinder body mechanism 1. An oil supply pipe 102 is fixedly connected to the left side of the outer peripheral surface of the cylinder body mechanism 1. The oil supply pipe 102 is connected to the cylinder body mechanism 1. An oil supply flange 1021 is fixedly connected to the side of the oil supply pipe 102 away from the cylinder body mechanism 1.

[0033] Among them, the oil supply flange 1021 has assembly holes 1022 arranged in a ring array inside, the cylinder mechanism 1 has a piston mechanism 2 installed inside, and two annular sealing components 201 are fixedly connected in a linear array on the outer circumference of the piston mechanism 2.

[0034] The piston mechanism 2 has a circular cross-section, and its outer wall is in contact with the inner wall of the cylinder mechanism 1. A longitudinally arranged output rod 202 is fixedly connected to the center of the top surface of the piston mechanism 2.

[0035] In use, the cylinder body mechanism 1 is fitted with the mounting component 101 fixedly connected to its outer side surface and fixed to the base surface, and then fixed by bolts passing through the mounting holes 1011 in the mounting component 101. Then, the external oil pump is connected and assembled with the oil supply flange 1021 fixedly connected to the outside of the oil supply pipe 102, and the shielding mechanism 3 is installed on the top of the cylinder body mechanism 1 and limited by the fixing bolt 3011.

[0036] When in use, oil is supplied into the cylinder mechanism 1 and pushes the piston mechanism 2, causing the piston mechanism 2 to drive the output rod 202 fixedly connected to its top surface to move upward and perform the corresponding power output operation. When self-locking is required during the output process, the servo push rod 302 installed on the top surface of the shielding mechanism 3 can be activated to push the moving component 3021 and the limit frame 3023 toward one side of the output rod 202, so that the limit frame 3023 and the limit plate 2021 engage and limit the position to achieve a fast self-locking operation.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A hydraulic actuator with a self-locking structure, comprising a cylinder mechanism (1), wherein the cylinder mechanism (1) has an internally hollow structure, and the top of the cylinder mechanism (1) is covered by a disc-shaped shielding mechanism (3), characterized in that, The shielding mechanism (3) has two positioning holes (301) arranged in a straight line array inside, which are bidirectionally connected on the upper and lower sides. A fixing bolt (3011) is screwed into the positioning hole (301). The fixing bolt (3011) is used to connect the shielding mechanism (3) and the cylinder mechanism (1). Two transverse grooves are opened opposite each other on the top surface of the shielding mechanism (3). A servo push rod (302) is fixedly connected inside the transverse groove. A rectangular block structure moving component (3021) is fixedly connected to the inner side of the servo push rod (302). There are two moving components (3021). Two sliders with protruding structures are fixedly connected to the outer sides of the two moving components (3021) in opposite directions. An L-shaped limit frame (3023) is fixedly connected to the top surface of the two moving components (3021).

2. A hydraulic actuator with a self-locking structure according to claim 1, characterized in that, The cylinder mechanism (1) has three mounting components (101) fixedly connected in a ring array at the bottom of its outer peripheral surface.

3. A hydraulic actuator with a self-locking structure according to claim 2, characterized in that, The three mounting components (101) are all provided with bidirectional mounting holes (1011) on both the top and bottom sides.

4. A hydraulic actuator with a self-locking structure according to claim 1, characterized in that, Limiting holes (1012) are provided on both the front and rear sides of the top surface of the cylinder mechanism (1), and an oil supply pipe (102) is fixedly connected to the left side of the outer peripheral surface of the cylinder mechanism (1).

5. A hydraulic actuator with a self-locking structure according to claim 4, characterized in that, The oil supply pipe (102) is connected to the cylinder body mechanism (1), and an oil supply flange (1021) is fixedly connected to the side of the oil supply pipe (102) away from the cylinder body mechanism (1).

6. A hydraulic actuator with a self-locking structure according to claim 5, characterized in that, The oil supply flange (1021) has mounting holes (1022) arranged in a ring array inside.

7. A hydraulic actuator with a self-locking structure according to claim 1, characterized in that, The cylinder mechanism (1) is equipped with a piston mechanism (2), and two annular sealing components (201) are fixedly connected in a linear array on the outer circumferential surface of the piston mechanism (2).

8. A hydraulic actuator with a self-locking structure according to claim 7, characterized in that, The piston mechanism (2) has a circular cross-section, and the outer wall of the piston mechanism (2) is in contact with the inner wall of the cylinder mechanism (1).

9. A hydraulic actuator with a self-locking structure according to claim 8, characterized in that, The piston mechanism (2) has a longitudinally arranged output rod (202) fixedly connected at the center of its top surface.

10. A hydraulic actuator with a self-locking structure according to claim 9, characterized in that, The output rod (202) has longitudinal grooves on both the left and right sides of its outer peripheral surface, and a limiting plate (2021) is fixedly connected inside the longitudinal groove.

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