Electro-hydraulic control device with protective structure

Abstract

The utility model relates to the technical field of electro-hydraulic control devices, and discloses an electro-hydraulic control device with a protection structure, which comprises a main valve body, the outer wall of the upper end of the main valve body is fixedly connected with a motor seat, the outer wall of the motor seat is provided with a cable interface, and a protection assembly is arranged outside the cable interface. According to the electro-hydraulic control device with the protection structure, when an electro-hydraulic servo valve is idle, a protection shell can be pulled, then a sliding rod is rotated to enable the protection shell to cover a cable interface, when the sliding rod moves, a baffle can press an extrusion spring, and the extrusion spring generates pressure on a connecting shell, so that the protection shell can be tightly pressed on the cable interface; the cable interface is protected, the service life of the device is longer, when the electro-hydraulic servo valve needs to be used, the rotating shaft can be rotated, the protection shell is clamped into the clamping groove, the protection shell can be fixed to the upper portion of the motor base, therefore, the protection shell cannot affect connection of the cable interface and a cable, and the using effect of the device is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to electro -hydraulic control device technical field, concretely is a kind of electro -hydraulic control device with protective structure. BACKGROUND

[0002] Electro-hydraulic servo valve is the key element in electro-hydraulic servo control, it is a kind of analog electric signal after receiving, corresponding output modulated flow and pressure hydraulic control valve.Electro-hydraulic servo valve has dynamic response fast, control precision is high, service life is long etc.Advantages, has been widely used in aviation, aerospace, ship, metallurgy, chemical industry etc.Electro-hydraulic servo control system in the field.

[0003] But existing equipment in actual use, idle electro-hydraulic servo valve on cable interface is difficult to protect strictly, when encountering more humid environment, idle electro-hydraulic servo valve on cable interface is easy to rust and damage, make the service life of device decline;In view of this, we propose a kind of electro -hydraulic control device with protective structure. UTILITY MODEL CONTENT

[0004] The utility model is to provide a kind of electro -hydraulic control device with protective structure to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of electro -hydraulic control device with protective structure, including main valve body, the upper end outer wall of main valve body is fixedly connected with motor seat, the outer wall of motor seat is equipped with cable interface, the outside of cable interface is provided with protection assembly, and the protection assembly includes:

[0006] Rotary shaft, rotary shaft is rotatably connected on the outer wall of motor seat, the outer wall of rotary shaft is fixedly connected with slide rod, the outer wall of slide rod is slidably connected with connecting shell, and the inner wall of connecting shell is equipped with sliding slot;

[0007] Baffle, baffle is fixedly connected on the outer wall of one end of slide rod away from rotary shaft, extrusion spring is sleeved on the outer wall of slide rod, and the one end of protection shell away from rotary shaft of connecting shell is fixedly connected with sealing ring.

[0008] Preferably, the outer portion of the motor seat is provided with a limiting assembly, the limiting assembly includes a pressing groove, the pressing groove is provided on the outer wall of the motor seat, the inner wall of the pressing groove is slidably connected with a limiting block, the outer wall of the limiting block is provided with a limiting slot, the one end of the limiting block away from the limiting slot is fixedly connected with a return spring, the upper end of the outer wall of the motor seat is provided with a clamping groove, and the limiting slot on the limiting block is clamped with the slide rod, so that the slide rod can be fixed.

[0009] Preferably, the edge of the limiting groove is arranged as an arc surface, one end of the return spring away from the limiting block is fixedly connected with the inner wall of the pressing groove, the size of the clamping groove is consistent with the area of the sealing ring, and the return spring can push the limiting groove to be clamped with the sliding rod, so that the sliding rod is fixed.

[0010] Preferably, the area of the baffle is consistent with the sectional area of the sliding groove, the sliding rod is slidably connected with the inner wall of the sliding groove, and the baffle is slidably connected with the inner wall of the sliding groove, so that the baffle can move on the inner wall of the sliding groove when the sliding rod moves.

[0011] Preferably, one end of the extrusion spring is fixedly connected with the baffle, the other end of the extrusion spring is fixedly connected with the inner wall of the sliding groove, and the sliding rod penetrates the axis of the extrusion spring, so that the baffle can press the extrusion spring when the sliding rod moves, the extrusion spring generates pressure on the connecting shell, and the protective shell can be tightly pressed on the cable interface.

[0012] Preferably, the limiting blocks are arranged in two groups, the two groups of limiting blocks are distributed in a circumferential array on the outer wall of the motor seat with the rotating shaft as the center, and the included angle of the straight lines between the two groups of limiting blocks and the rotating shaft is a right angle, so that the sliding rod can be fixed when the sliding rod rotates to a position where the protective shell can protect the cable interface and a position above the motor seat.

[0013] Preferably, the sealing ring is made of a rubber ring, and the outer wall of the protective shell is provided with a penetrating opening, and the size of the opening is consistent with the size of the cable interface, so that the sealing ring can better seal the cable interface when the protective shell seals the cable interface.

[0014] Compared with the prior art, the utility model provides a kind of electro-hydraulic control device with protective structure, with the following beneficial effects:

[0015] 1、The electro-hydraulic control device with protective structure, when the electro-hydraulic servo valve is idle, the protective shell can be pulled to rotate the sliding rod to cover the cable interface, when the sliding rod moves, the baffle can press the extrusion spring, the extrusion spring generates pressure on the connecting shell, so that the protective shell can be tightly pressed on the cable interface, to protect the cable interface, so that the service life of the device is longer.

[0016] 2、The electro-hydraulic control device with protective structure, when the electro-hydraulic servo valve is needed, the rotating shaft can be rotated to make the protective shell clamped into the clamping groove, so that the protective shell can be fixed above the motor seat, so that the protective shell does not affect the connection between the cable interface and the cable, so that the use effect of the device is better. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0018] Figure 2The utility model discloses a cable interface structure schematic diagram;

[0019] Figure 3 The utility model discloses a protective component structure schematic diagram;

[0020] Figure 4 The utility model discloses a limiting block structure schematic diagram.

[0021] In the drawing: 1, main valve body;2, motor seat;3, cable interface;4, protective component;41, rotating shaft;42, sliding rod;43, connecting shell;44, sliding groove;45, baffle;46, extrusion spring;47, protective shell;48, sealing ring;5, limiting component;51, press groove;52, limiting block;53, limiting groove;54, reset spring;55, clamping groove. Specific implementation

[0022] As Figures 1-4 The utility model provides a kind of electro-hydraulic control device with protective structure, including main valve body 1, the upper end outer wall of main valve body 1 is fixedly connected with motor seat 2, the outer wall of motor seat 2 is equipped with cable interface 3, the outside of cable interface 3 is provided with protective component 4, and protective component 4 includes rotating shaft 41, sliding rod 42, connecting shell 43, sliding groove 44, baffle 45, extrusion spring 46, protective shell 47 and sealing ring 48.

[0023] In an embodiment of the utility model, rotating shaft 41 is rotatably connected on the outer wall of motor seat 2, and the outer wall of rotating shaft 41 is fixedly connected with sliding rod 42, and the outer wall of sliding rod 42 is slidably connected with connecting shell 43, and the inner wall of connecting shell 43 is equipped with sliding groove 44.

[0024] In an embodiment of the utility model, baffle 45 is fixedly connected on the outer wall of one end of sliding rod 42 away from rotating shaft 41, extrusion spring 46 is sleeved on the outer wall of sliding rod 42, protective shell 47 is fixedly connected on one end of connecting shell 43 away from rotating shaft 41, and sealing ring 48 is fixedly connected on one end of protective shell 47 close to cable interface 3.

[0025] In addition, the outside of motor seat 2 is provided with limiting component 5, limiting component 5 includes press groove 51, press groove 51 is equipped on the outer wall of motor seat 2, the inner wall of press groove 51 is slidably connected with limiting block 52, the outer wall of limiting block 52 is equipped with limiting groove 53, one end of limiting block 52 away from limiting groove 53 is fixedly connected with reset spring 54, the upper end outer wall of motor seat 2 is equipped with clamping groove 55, and limiting groove 53 on limiting block 52 is clamped with sliding rod 42. So that sliding rod 42 can be fixed, when needing to use electro-hydraulic servo valve, rotating rotating shaft 41 can make protective shell 47 be clamped into clamping groove 55, so that protective shell 47 can be fixed above motor seat 2, so that protective shell 47 can not affect cable interface 3 and cable connection.

[0026] In the embodiment of the utility model, the edge of the limiting groove 53 is set as an arc surface, one end of the return spring 54 away from the limiting block 52 is fixedly connected with the inner wall of the pressing groove 51, the size of the clamping groove 55 is consistent with the area of the sealing ring 48, the return spring 54 can push the limiting groove 53, so that it is clamped with the sliding rod 42, thereby the sliding rod 42 is fixed, and the clamping groove 55 can better fix the protective shell 47 above the motor base 2.

[0027] In the embodiment of the utility model, the area of the baffle 45 is consistent with the cross-sectional area of the sliding groove 44, the sliding rod 42 is slidably connected with the inner wall of the sliding groove 44, and the baffle 45 is slidably connected with the inner wall of the sliding groove 44, so that when the sliding rod 42 moves, the baffle 45 can move on the inner wall of the sliding groove 44, and the sliding groove 44 does not penetrate the connecting shell 43, so that the sliding rod 42 will not slide out of the connecting shell 43 when sliding.

[0028] In the embodiment of the utility model, one end of the extrusion spring 46 is fixedly connected with the baffle 45, the other end of the extrusion spring 46 is fixedly connected with the inner wall of the sliding groove 44, and the sliding rod 42 penetrates the axis of the extrusion spring 46, so that when the sliding rod 42 moves, the baffle 45 can press the extrusion spring 46, the extrusion spring 46 generates pressure on the connecting shell 43, the protective shell 47 can be tightly pressed on the cable interface 3, the cable interface 3 is protected, and the service life of the device is longer.

[0029] In the embodiment of the utility model, the limiting block 52 is provided with two groups, the two groups of limiting blocks 52 are distributed in a circumferential array on the outer wall of the motor base 2 with the rotating shaft 41 as the center, and the included angle of the straight line between the two groups of limiting blocks 52 and the rotating shaft 41 is a right angle, so that when the sliding rod 42 rotates to the position where the protective shell 47 can protect the cable interface 3 and the position above the motor base 2, the sliding rod 42 can be fixed.

[0030] In the embodiment of the utility model, the sealing ring 48 is made of a rubber ring, the outer wall of the protective shell 47 is provided with a penetrating opening, the size of the opening is consistent with the size of the cable interface 3, so that the sealing ring 48 can better seal the cable interface 3 by the protective shell 47, and the protective shell 47 can better protect the cable interface 3.

[0031] In the utility model, when the electro-hydraulic servo valve is idle, the protection shell 47 can cover the cable interface 3 by pulling the protection shell 47 and rotating the slide rod 42, when the slide rod 42 moves, the baffle 45 can press the extrusion spring 46, the extrusion spring 46 generates pressure on the connecting shell 43, the protection shell 47 can be tightly pressed on the cable interface 3, the cable interface 3 is protected, the service life of the device is longer, when the electro-hydraulic servo valve needs to be used, the protection shell 47 can be clamped into the clamping groove 55 by rotating the rotating shaft 41, the protection shell 47 can be fixed above the motor seat 2, so that the protection shell 47 does not affect the connection between the cable interface 3 and the cable, and the use effect of the device is better.

[0032] The utility model has been described in detail above, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. An electro-hydraulic control device with a protection structure, comprising a main valve body (1), an outer wall of an upper end of the main valve body (1) is fixedly connected with a motor seat (2), an outer wall of the motor seat (2) is provided with a cable interface (3), characterized in that: The outer part of the cable interface (3) is provided with a protection assembly (4), the protection assembly (4) comprises: A rotating shaft (41) is rotatably connected to the outer wall of the motor seat (2), the outer wall of the rotating shaft (41) is fixedly connected with a sliding rod (42), the outer wall of the sliding rod (42) is slidably connected with a connecting shell (43), and the inner wall of the connecting shell (43) is provided with a sliding groove (44); A baffle (45) is fixedly connected to the outer wall of one end of the sliding rod (42) away from the rotating shaft (41), the outer wall of the sliding rod (42) is sleeved with an extrusion spring (46), one end of the connecting shell (43) away from the rotating shaft (41) is fixedly connected with a protection shell (47), and one end of the protection shell (47) close to the cable interface (3) is fixedly connected with a sealing ring (48).

2. The electro-hydraulic control device with a protective structure according to claim 1, characterized in that: The outer part of the motor seat (2) is provided with a limiting assembly (5), the limiting assembly (5) comprises a pressing groove (51) which is arranged on the outer wall of the motor seat (2), the inner wall of the pressing groove (51) is slidably connected with a limiting block (52), the outer wall of the limiting block (52) is provided with a limiting groove (53), one end of the limiting block (52) away from the limiting groove (53) is fixedly connected with a return spring (54), and the upper end of the outer wall of the motor seat (2) is provided with a clamping groove (55).

3. The electro-hydraulic control device with a protective structure according to claim 2, characterized in that: The edge of the limiting groove (53) is arc-shaped, one end of the return spring (54) away from the limiting block (52) is fixedly connected with the inner wall of the pressing groove (51), and the size of the clamping groove (55) is consistent with the area of the sealing ring (48).

4. The electro-hydraulic control device with a protective structure according to claim 1, characterized in that: The area of the baffle (45) is consistent with the cross-sectional area of the sliding groove (44), the sliding rod (42) is slidably connected with the inner wall of the sliding groove (44), and the baffle (45) is slidably connected with the inner wall of the sliding groove (44).

5. The electro-hydraulic control device with a protective structure according to claim 1, characterized in that: One end of the extrusion spring (46) is fixedly connected with the baffle (45), the other end of the extrusion spring (46) is fixedly connected with the inner wall of the sliding groove (44), and the sliding rod (42) penetrates the axis of the extrusion spring (46).

6. The electro-hydraulic control device with a protective structure according to claim 2, characterized in that: The limiting block (52) is provided with two groups, the two groups of limiting blocks (52) are distributed in a circumferential array on the outer wall of the motor seat (2) with the rotating shaft (41) as the center, and the included angle between the straight lines between the two groups of limiting blocks (52) and the rotating shaft (41) is a right angle.

7. The electro-hydraulic control device with a protective structure according to claim 1, characterized in that: The sealing ring (48) is made of a rubber ring, the outer wall of the protection shell (47) is provided with a through opening, and the size of the opening is consistent with the size of the cable interface (3).

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