Anti-explosion electric actuator mechanism

Abstract

The utility model discloses an anti-explosion electric actuator mechanism, which relates to the technical field of electric actuators and comprises an electric actuator body and an oil tank protection device. A hydraulic oil tank is mounted on the surface of the electric actuator body; the oil tank protection device comprises an oil tank protection shell, a sealing disc, a rubber sealing block, two sliding blocks, a spring, two arc-shaped pull rods and four fixing shafts, the oil tank protection shell is installed on the surface of the electric actuator body, the oil tank protection shell is slidably connected to the surface of the hydraulic oil tank in a sleeving mode, and the sealing disc is slidably connected to the interior of the oil tank protection shell; a rubber sealing block is fixedly connected to the surface of the sealing disc, when the hydraulic oil tank bursts, hydraulic oil in the hydraulic oil tank can flow into the oil tank protection shell, the leaked hydraulic oil is prevented from flowing to the surface of the electric actuator body, the cleanliness of the surface of the electric actuator body can be kept, and the service life of the electric actuator body is prolonged. And the waste of the hydraulic oil is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric actuators, and particularly relates to an explosion-proof electric actuator mechanism. Background Art

[0002] An electric actuator is an instrument applied to various industrial automation process control links. The electric actuator has characteristics such as safety assurance, protection devices, multiple speeds, anti-corrosion and rust prevention, and intelligent numerical control; it is divided into angular stroke and linear stroke according to the motion mode (wherein the angular stroke is divided into multi-turn and partial turn, and the linear stroke is usually a push-pull structure).

[0003] The currently disclosed patent: CN219345130U discloses a electro-hydraulic actuator. The electro-hydraulic actuator sets a shoulder on the piston rod and sets a bushing at the opening of the hydraulic cylinder, and then connects and fixes the first connecting ring of the dust cover and the shoulder, and the second connecting ring of the dust cover and the bushing through a connecting structure. Moreover, the tube body of the dust cover is set as a telescopic corrugated shape, so that the part of the piston rod extending out of the hydraulic cylinder can be sealed to realize the dust-proof function.

[0004] Based on the above search, it is found that the above patent has the following problems in use: The electro-hydraulic actuator can seal the part of the piston rod extending out of the hydraulic cylinder through the dust cover to realize the dust-proof function. However, the hydraulic oil tank of the electro-hydraulic actuator is installed on the surface of the hydraulic cylinder and is exposed outside. When the internal pressure of the hydraulic cylinder is too high, it is easy to cause the hydraulic oil tank to burst. After the hydraulic oil tank bursts and flows to the surface of the hydraulic cylinder, not only the surface of the hydraulic cylinder needs to be cleaned, but also the waste of hydraulic oil is caused. Content of the Utility Model

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide an explosion-proof electric actuator mechanism, which can solve the problems that when the internal pressure of the hydraulic cylinder is too high, it is easy to cause the hydraulic oil tank to burst, and after the hydraulic oil tank bursts and flows to the surface of the hydraulic cylinder, not only the surface of the hydraulic cylinder needs to be cleaned, but also the waste of hydraulic oil is caused.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an explosion-proof electric actuator mechanism, comprising an electric actuator body and an oil tank protection device; a hydraulic oil tank is installed on the surface of the electric actuator body; the oil tank protection device comprises an oil tank protection shell, a sealing disk, a rubber sealing block, two sliders, a spring, two arc-shaped pull rods and four fixed shafts, the oil tank protection shell is installed on the surface of the electric actuator body, the oil tank protection shell is slidably sleeved on the surface of the hydraulic oil tank, the interior of the oil tank protection shell is slidably connected with a sealing disk, the surface of the sealing disk is fixedly connected with a rubber sealing block, the inner wall of the oil tank protection shell is provided with a step, the rubber sealing block is in contact with the surface of the step, a slide groove is provided inside the sealing disk, and the two sliders are slidably connected inside the slide groove.

[0007] Preferably, a piston rod is provided inside the electric actuator body, and a drive motor is installed at the right end of the electric actuator body.

[0008] Preferably, the spring is fixedly connected to one side opposite to the two sliders, and the two arc-shaped pull rods are fixedly connected to the surface of the sliders.

[0009] Preferably, the four fixed shafts are respectively fixedly connected to the surfaces of the two sliding blocks.

[0010] Preferably, four fixing holes are opened on the surface of the oil tank protective shell, and four fixing shafts are slidably engaged in the inside of the four fixing holes respectively.

[0011] Preferably, an oil drain pipe is fixedly connected to the surface of the oil tank protective shell, and a sealing bolt is connected to the internal thread of the oil drain pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) In the explosion-proof electric actuator mechanism, when the hydraulic oil tank explodes, the hydraulic oil in the hydraulic oil tank can flow into the interior of the oil tank protective shell, and the leaked hydraulic oil is stored by the oil tank protective shell. The oil tank protective shell is sealed by a sealing disk and a rubber sealing block to prevent the leaked hydraulic oil from flowing to the surface of the electric actuator body. This not only keeps the surface of the electric actuator body clean, but also avoids the waste of hydraulic oil.

[0014] (2) In the explosion-proof electric actuator mechanism, the staff can rotate the sealing bolt with a wrench to separate it from the inside of the oil drain pipe, and the hydraulic oil leaked from the inside of the oil tank protective shell can be discharged to the outside through the oil drain pipe, which is convenient for the staff to receive the hydraulic oil inside the oil tank protective shell and reuse the leaked hydraulic oil, thereby saving hydraulic oil resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a schematic diagram of the overall structure of an explosion-proof electric actuator mechanism of the present utility model;

[0017] Figure 2 It is a schematic diagram of the surface structure of the fuel tank protective shell of the present utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the fuel tank protective shell of the present utility model;

[0019] Figure 4 It is a schematic diagram of the internal structure of the sealing disc of the present utility model.

[0020] Reference numerals: 1, electric actuator body; 2, drive motor; 3, piston rod; 4, fuel tank protective shell; 5, hydraulic oil tank; 6, sealing disc; 7, rubber sealing block; 8, step; 9, chute; 10, slider; 11, spring; 12, arc-shaped pull rod; 13, fixed shaft; 14, fixed clamping hole; 15, drain pipe; 16, sealing bolt. Detailed implementation manners

[0021] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation descriptions such as up, down, front, back, left, right, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the present utility model.

[0023] In the description of the present utility model, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence of the indicated technical features.

[0024] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0025] Please refer to Figures 1-4, the present utility model provides a technical solution: an explosion-proof electric actuator mechanism, including an electric actuator body 1 and a fuel tank protection device. A piston rod 3 is arranged inside the electric actuator body 1, a driving motor 2 is installed at the right end of the electric actuator body 1, and a hydraulic fuel tank 5 is installed on the surface of the electric actuator body 1. The fuel tank protection device includes a fuel tank protection shell 4, a sealing disc 6, a rubber sealing block 7, two sliders 10, a spring 11, two arc-shaped pull rods 12 and four fixed shafts 13. The fuel tank protection shell 4 is installed on the surface of the electric actuator body 1, the fuel tank protection shell 4 is slidably sleeved on the surface of the hydraulic fuel tank 5, a sealing disc 6 is slidably connected inside the fuel tank protection shell 4, a rubber sealing block 7 is fixedly connected to the surface of the sealing disc 6, a step 8 is opened on the inner wall of the fuel tank protection shell 4, and the rubber sealing block 7 is in contact with the surface of the step 8. A chute 9 is opened inside the sealing disc 6, both sliders 10 are slidably connected inside the chute 9, the spring 11 is fixedly connected to the opposite sides of the two sliders 10, both arc-shaped pull rods 12 are fixedly connected to the surface of the sliders 10, four fixed shafts 13 are respectively fixedly connected to the surface of the two sliders 10, and four fixed card holes 14 are opened on the surface of the fuel tank protection shell 4, and the four fixed shafts 13 are respectively slidably clamped inside the four fixed card holes 14.

[0026] After the staff installs the hydraulic fuel tank 5 inside the fuel tank protection shell 4, pick up the sealing disc 6 and use fingers to simultaneously slide the two arc-shaped pull rods 12 to drive the two sliders 10 to slide relatively and compress the spring 11. The spring 11 gives a reverse acting force to the two sliders 10. Then, the staff slides the sealing disc 6 into the fuel tank protection shell 4. The sealing disc 6 slides and drives the rubber sealing block 7 to contact the surface of the step 8, thereby sealing the connection between the sealing disc 6 and the fuel tank protection shell 4 through the rubber sealing block 7. After releasing the two arc-shaped pull rods 12, the spring 11 pushes the two sliders 10 to slide in the reverse direction and drives the four fixed shafts 13 to slide in the reverse direction and be clamped inside the four fixed card holes 14. When this explosion-proof electric actuator mechanism is in use, hydraulic oil is provided to the inside of the electric actuator body 1 through the hydraulic fuel tank 5, thereby driving the piston rod 3 to move. When the hydraulic fuel tank 5 explodes, the hydraulic oil inside the hydraulic fuel tank 5 can flow into the fuel tank protection shell 4. The fuel tank protection shell 4 stores the leaked hydraulic oil, and the fuel tank protection shell 4 is sealed through the sealing disc 6 and the rubber sealing block 7 to prevent the leaked hydraulic oil from flowing onto the surface of the electric actuator body 1. This not only keeps the surface of the electric actuator body 1 clean, but also avoids waste of hydraulic oil.

[0027] A drain pipe 15 is fixedly connected to the surface of the fuel tank protection shell 4, and a sealing bolt 16 is threadedly connected inside the drain pipe 15.

[0028] The staff uses a wrench to rotate the sealing bolt 16 and disengage it from the inside of the oil drain pipe 15, and the hydraulic oil leaked from the inside of the oil tank protective shell 4 can be discharged to the outside through the oil drain pipe 15, which makes it convenient for the staff to receive the hydraulic oil inside the oil tank protective shell 4 and reuse the leaked hydraulic oil, saving hydraulic oil resources.

[0029] Working principle: For the explosion-proof electric actuator mechanism, the staff picks up the sealing disk 6 and uses the fingers to slide the two arc-shaped pull rods 12 at the same time to drive the two sliders 10 to slide relative to each other and squeeze the spring 11. The staff slides the sealing disk 6 to the inside of the oil tank protective shell 4. The sealing disk 6 slides and drives the rubber sealing block 7 to contact the surface of the step 8, and then the connection between the sealing disk 6 and the oil tank protective shell 4 is sealed through the rubber sealing block 7. After loosening the two arc-shaped pull rods 12, the spring 11 pushes the two sliders 10 to slide in the opposite direction and drives the four fixed shafts 13 to slide in the opposite direction and get stuck in the four fixed holes 14. When the hydraulic oil tank 5 bursts, the hydraulic oil inside the hydraulic oil tank 5 can flow to the inside of the oil tank protective shell 4, and seal the oil tank protective shell 4 through the sealing disk 6 and the rubber sealing block 7. The staff rotates the sealing bolt 16 with a wrench and disengages it from the inside of the oil drain pipe 15. The hydraulic oil leaked from the inside of the oil tank protective shell 4 can be discharged to the outside through the oil drain pipe 15, and the leaked hydraulic oil can be reused.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An explosion-proof electric actuator mechanism, characterized in that: include: An electric actuator body (1) and an oil tank protection device; A hydraulic oil tank (5) is installed on the surface of the electric actuator body (1); The oil tank protection device comprises an oil tank protection shell (4), a sealing disk (6), a rubber sealing block (7), two sliders (10), a spring (11), two arc-shaped pull rods (12) and four fixed shafts (13). The oil tank protection shell (4) is mounted on the surface of the electric actuator body (1). The oil tank protection shell (4) is slidably sleeved on the surface of the hydraulic oil tank (5). The oil tank protection shell (4) is slidably connected with the sealing disk (6) inside. The surface of the sealing disk (6) is fixedly connected with the rubber sealing block (7). The inner wall of the oil tank protection shell (4) is provided with a step (8). The rubber sealing block (7) contacts the surface of the step (8). The sealing disk (6) is provided with a slide groove (9). The two sliders (10) are both slidably connected inside the slide groove (9).

2. An explosion-proof electric actuator mechanism according to claim 1, characterized in that: A piston rod (3) is arranged inside the electric actuator body (1), and a driving motor (2) is installed at the right end of the electric actuator body (1).

3. The explosion-proof electric actuator mechanism according to claim 1, characterized in that: The spring (11) is fixedly connected to the opposite side of the two sliders (10), and the two arc-shaped pull rods (12) are fixedly connected to the surface of the sliders (10).

4. An explosion-proof electric actuator mechanism according to claim 3, characterized in that: The four fixed shafts (13) are respectively fixedly connected to the surfaces of the two sliding blocks (10).

5. The explosion-proof electric actuator mechanism according to claim 4, characterized in that: The surface of the oil tank protective shell (4) is provided with four fixing holes (14), and the four fixing shafts (13) are respectively slidably engaged in the inside of the four fixing holes (14).

6. The explosion-proof electric actuator mechanism according to claim 1, characterized in that: An oil drain pipe (15) is fixedly connected to the surface of the oil tank protective shell (4), and a sealing bolt (16) is threadedly connected to the inside of the oil drain pipe (15).

Images