Electro-hydraulic straight stroke actuating mechanism

Abstract

The utility model discloses an electro-hydraulic straight stroke actuating mechanism which comprises an integrated valve block, one end of the integrated valve block is fixedly connected with an oil cylinder module in a threaded mode, the other end of the integrated valve block is fixedly connected with a three-phase motor in a threaded mode, and meanwhile a manual pump connecting pipe is installed on the side wall of the integrated valve block. A stable supporting and mounting assembly is fixedly mounted at the bottom of the integrated valve block and comprises a base fixed to the bottom of the integrated valve block in a screwed mode, a supporting plate is welded to the bottom of the base, meanwhile, a first mounting piece is fixedly mounted on one side of the supporting plate, and a second mounting piece is fixedly mounted on the other side of the supporting plate. The bottom of the oil cylinder module is fixedly covered with an oil cylinder supporting base. According to the electro-hydraulic straight stroke executing mechanism, the oil cylinder supporting base is fixed to the bottom of the oil cylinder module in a screwed mode, the oil cylinder supporting base can support and fix the oil cylinder module, and the amplitude generated when the oil cylinder module works is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to an electro-hydraulic linear actuator. Background Art

[0002] The working principle of the electro-hydraulic linear actuator is to convert the input standard current signal into the mechanical energy of the motor, and then convert it into the pressure energy of the hydraulic oil through hydraulic oil as the working medium, and finally drive the valve stem to complete linear motion. Specifically, the control room sends a 4-20 mA control signal, which is converted into a 0-10 volt voltage signal at the input end of the electrical control system. At the same time, the actual valve position signal detected by the displacement sensor is also converted into a 0-10 volt voltage signal. These two signals are compared in the servo amplifier, and their difference is amplified as the command signal of the electro-hydraulic servo valve, which drives the servo valve to control the servo cylinder to move in the specified direction, thereby moving the valve head. When the deviation between the input signal and the feedback signal is zero, the servo valve control current is close to zero, there is no hydraulic oil output, and the actuator stops at the position corresponding to the input signal, achieving a balance between displacement and signal.

[0003] When the cylinder assembly on the electro-hydraulic linear actuator is working, it will be affected by the vibration of the motor. Since there is no supporting anti-vibration component at the bottom, it will vibrate significantly. The vibration will loosen the connection between the cylinder and the integrated valve block, causing hydraulic oil leakage; leakage will not only affect the working performance of the actuator, but may also cause environmental pollution and safety hazards. Utility Model Content

[0004] The purpose of the present utility model is to provide an electro-hydraulic linear actuator to solve the defects mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, an electro-hydraulic linear actuator is provided, including an integrated valve block, one end of the integrated valve block is screwed and fixed with a cylinder module, and the other end of the integrated valve block is screwed and fixed with a three-phase motor, and a manual pump pipe is installed on the side wall of the integrated valve block, and a stable support and mounting assembly is fixedly installed on the bottom of the integrated valve block, the stable support and mounting assembly includes a base screwed and fixed to the bottom of the integrated valve block, and a support plate is welded to the bottom of the base, and a first mounting plate is fixedly installed on one side of the support plate, and a second mounting plate is fixedly installed on the other side of the support plate, the bottom of the cylinder module is fixedly covered with a cylinder support seat, and the bottom of the three-phase motor is fixedly covered with a motor support seat.

[0006] Preferably, the ends of the three-phase motor and the cylinder module are fixedly mounted with rectangular docking seats, and the two sets of rectangular docking seats are mounted on the side wall of the integrated valve block through four sets of fixing bolts.

[0007] Preferably, the motor support base is an arc-shaped structure made of metal material, and the motor support base is screwed and fixed to the bottom of the three-phase motor. At the same time, the axial cross-section of the motor support base and the three-phase motor is a concentric circle structure.

[0008] Preferably, the oil cylinder support seat is screwed and fixed to the bottom of the oil cylinder module, and three groups of first support rods are evenly installed on the circumferential outer wall of the oil cylinder support seat, and the ends of the three groups of first support rods are welded and fixed to the first mounting plate.

[0009] Preferably, three groups of second support rods are evenly mounted on the circumferential outer wall of the motor support seat, and the ends of the three groups of second support rods are fixedly connected to the second mounting plates.

[0010] Preferably, the support plates are provided in two groups, and mounting feet are fixedly installed on the bottom of the two groups of support plates. At the same time, two groups of mounting holes are provided on the mounting feet, and the mounting holes are arranged in a straight line.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model is screwed and fixed to the bottom of the three-phase motor through the motor support base, which can support and fix the three-phase motor and reduce the amplitude of the three-phase motor during operation; the oil cylinder support base is screwed and fixed to the bottom of the oil cylinder module, which can support and fix the oil cylinder module and reduce the amplitude of the oil cylinder module during operation;

[0013] 2. The utility model ensures the stability of the three-phase motor and the cylinder module during operation by setting the cylinder support seat and the motor support seat, and at the same time avoids vibration that may loosen the connection of the cylinder module and cause hydraulic oil leakage; avoiding hydraulic oil leakage will not only affect the working performance of the actuator, but may also cause environmental pollution and safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 Bottom view of

[0016] Figure 3 for Figure 1 A top view of

[0017] Figure 4 Schematic diagram of the structure for stable support and installation components;

[0018] Figure 5 for Figure 4 rear view.

[0019] Numbers in the figure: 1. Integrated valve block; 2. Three-phase motor; 3. Cylinder module; 4. Manual pump pipe; 5. Stable support and mounting assembly; 51. Cylinder support base; 52. First support rod; 53. First mounting plate; 54. Support plate; 55. Mounting foot; 551. Mounting hole; 552. Base; 56. Second mounting plate; 57. Second support rod; 58. Motor support base. DETAILED DESCRIPTION

[0020] See also Figure 1-5 The utility model provides an electro-hydraulic linear actuator, including an integrated valve block 1, one end of the integrated valve block 1 is screwed and fixed with a cylinder module 3, and the other end of the integrated valve block 1 is screwed and fixed with a three-phase motor 2, and a manual pump pipe 4 is installed on the side wall of the integrated valve block 1, and a stable support and mounting assembly 5 is fixedly installed on the bottom of the integrated valve block 1, and the stable support and mounting assembly 5 includes a base 552 screwed and fixed to the bottom of the integrated valve block 1, and a support plate 54 is welded to the bottom of the base 552, and a first mounting piece 53 is fixedly installed on one side of the support plate 54, and a second mounting piece 56 is fixedly installed on the other side of the support plate 54, the bottom of the cylinder module 3 is fixedly covered with a cylinder support seat 51, and the bottom of the three-phase motor 2 is fixedly covered with a motor support seat 58.

[0021] Working principle: When in use, the ends of the three-phase motor 2 and the cylinder module 3 are fixedly installed with rectangular docking seats, and the two sets of rectangular docking seats are installed on the side wall of the integrated valve block 1 through four sets of fixing bolts; the motor support seat 58 is screwed and fixed to the bottom of the three-phase motor 2, and the motor support seat 58 can support and fix the three-phase motor 2, thereby reducing the amplitude generated by the three-phase motor 2 during operation; the cylinder support seat 51 is screwed and fixed to the bottom of the cylinder module 3, and the cylinder support seat 51 can support and fix the cylinder module 3, thereby reducing the amplitude generated by the cylinder module 3 during operation; through the arrangement of the cylinder support seat 51 and the motor support seat 58, the stability of the three-phase motor 2 and the cylinder module 3 during operation can be guaranteed, and at the same time, vibration can be prevented from loosening the connection of the cylinder module 3. , resulting in hydraulic oil leakage; avoiding hydraulic oil leakage will not only affect the working performance of the actuator, but may also cause environmental pollution and safety hazards; when the cylinder support base 51 and the motor support base 58 are subjected to force, the cylinder support base 51 is fixedly connected to the first mounting plate 53 through the three groups of first support rods 52 at its bottom, ensuring the stability of the cylinder support base 51 when working under force; the motor support base 58 is fixedly connected to the second mounting plate 56 through the three groups of second support rods 57 at its bottom, ensuring the stability of the motor support base 58 when working under force; the bottom of the support plate 54 is fixedly installed with a mounting foot 55, and the mounting foot 55 is provided with two groups of mounting holes 551. The mounting holes 551 are used to facilitate fixing the equipment at the target position.

[0022] Rectangular docking seats are fixedly installed at the ends of the three-phase motor 2 and the cylinder module 3, and the two sets of rectangular docking seats are mounted on the side wall of the integrated valve block 1 through four sets of fixing bolts.

[0023] As a preferred embodiment, the motor support base 58 is an arc-shaped structure made of metal material, and the motor support base 58 is screwed and fixed to the bottom of the three-phase motor 2. At the same time, the axial section of the motor support base 58 and the three-phase motor 2 is a concentric circle structure.

[0024] The oil cylinder support base 51 is screwed and fixed to the bottom of the oil cylinder module 3 , and three groups of first support rods 52 are evenly installed on the circumferential outer wall of the oil cylinder support base 51 . At the same time, the ends of the three groups of first support rods 52 are welded and fixed to the first mounting plate 53 .

[0025] As a preferred embodiment, three groups of second support rods 57 are evenly installed on the circumferential outer wall of the motor support base 58 , and the ends of the three groups of second support rods 57 are fixedly connected to the second mounting piece 56 .

[0026] The support plates 54 are provided in two groups, and mounting feet 55 are fixedly installed on the bottom of the two groups of support plates 54. At the same time, two groups of mounting holes 551 are opened on the mounting feet 55, and the mounting holes 551 are arranged in a straight line.

Claims

1. An electro-hydraulic linear actuator, comprising an integrated valve block (1), characterized in that: One end of the integrated valve block (1) is screwed and fixed with a cylinder module (3), and the other end of the integrated valve block (1) is screwed and fixed with a three-phase motor (2). At the same time, a manual pump pipe (4) is installed on the side wall of the integrated valve block (1), and a stable support and installation component (5) is fixedly installed at the bottom of the integrated valve block (1). The stable support and installation component (5) includes a base (552) screwed and fixed to the bottom of the integrated valve block (1), and a support plate (54) is welded to the bottom of the base (552). At the same time, a first installation piece (53) is fixedly installed on one side of the support plate (54), and a second installation piece (56) is fixedly installed on the other side of the support plate (54). The bottom of the cylinder module (3) is fixedly covered with a cylinder support seat (51), and the bottom of the three-phase motor (2) is fixedly covered with a motor support seat (58).

2. The electro-hydraulic linear actuator according to claim 1, characterized in that: The ends of the three-phase motor (2) and the oil cylinder module (3) are both fixedly mounted with rectangular docking seats, and both sets of rectangular docking seats are mounted on the side wall of the integrated valve block (1) via four sets of fixing bolts.

3. The electro-hydraulic linear actuator according to claim 1, characterized in that: The motor support base (58) is an arc-shaped structure made of metal material, and the motor support base (58) is screwed and fixed to the bottom of the three-phase motor (2). At the same time, the axial sections of the motor support base (58) and the three-phase motor (2) are concentric circle structures.

4. The electro-hydraulic linear actuator according to claim 1, characterized in that: The oil cylinder support seat (51) is screwed and fixed to the bottom of the oil cylinder module (3), and three groups of first support rods (52) are evenly installed on the circumferential outer wall of the oil cylinder support seat (51), and the ends of the three groups of first support rods (52) are welded and fixed to the first mounting plate (53).

5. The electro-hydraulic linear actuator according to claim 1, characterized in that: Three groups of second support rods (57) are evenly installed on the circumferential outer wall of the motor support seat (58), and the ends of the three groups of second support rods (57) are fixedly connected to the second installation piece (56).

6. The electro-hydraulic linear actuator according to claim 1, characterized in that: The support plates (54) are arranged in two groups, and mounting feet (55) are fixedly installed at the bottom of the two groups of support plates (54). At the same time, two groups of mounting holes (551) are opened on the mounting feet (55), and the mounting holes (551) are arranged in a straight line.

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