Structure for improving control precision of steering engine

Abstract

The utility model discloses a structure for improving the control precision of a steering engine, and relates to the technical field of electric steering engines, the structure comprises steering engine racks, a screw rod is rotatably connected between the steering engine racks, the rod wall of the screw rod is sleeved with a sliding block in a threaded mode, one side of the sliding block is fixedly connected with a fin shaft, the lower surface of the steering engine rack is provided with a driving mechanism, and the lower surface of the steering engine rack is provided with the driving mechanism. The lead screw rotates through a driving mechanism, a sliding rail is fixedly connected between the steering engine racks, a sliding groove is formed in one side of the sliding rail, a boss is fixedly connected to one side of the sliding block, and the boss is arranged in the sliding groove in a sliding mode. The boss slides in the sliding groove, so that the sliding block can only move in parallel along the sliding rail along with the boss, the stability of the sliding block is improved, the sliding block is prevented from rotating, and fixing of the wing shaft is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of electric steering gears, and in particular to a structure for improving the control accuracy of steering gears. Background Art

[0002] An electric servo is an executive component used to control the rotation of the control surfaces of aircraft, robots, models and other equipment in an autopilot or control system. It usually consists of key components such as an electric motor, transmission components and a clutch.

[0003] The existing control method of electric servos is that the motor drives the lead screw or worm to rotate, the lead screw drives the slider to move linearly, and the slider drives the wing shaft to move. The rotational motion of the wing is obtained by the forward and reverse motion of the motor to achieve the purpose of controlling the servo. In actual operation, since the wing shaft needs to rotate, bearings are installed on the shaft, and the two ends are fixed by overfitting. At the same time, the slider is only fixed to the lead screw by threads, which is easy to rotate, thereby affecting the fixation of the wing rotation axis. Utility Model Content

[0004] In view of the above problems existing in the existing electric steering gear, this utility model is proposed.

[0005] Therefore, the purpose of this invention is to provide a structure that improves the control accuracy of the servo, and solves the problem that the slider is only fixed on the screw rod by threads during the control of the existing electric servo, which is easy to rotate and thus affects the fixation of the blade rotation axis.

[0006] In order to achieve the above purpose, this utility provides the following technical solutions:

[0007] A structure for improving the control accuracy of a steering gear comprises a steering gear frame, wherein a screw rod is rotatably connected between the steering gear frames, a slider is threadedly sleeved on the rod wall of the screw rod, a wing shaft is fixedly connected to one side of the slider, a driving mechanism is provided on the lower surface of the steering gear frame, the screw rod is rotated by the driving mechanism, a slide rail is fixedly connected between the steering gear frames, a slide groove is provided on one side of the slide rail, a boss is fixedly connected to one side of the slider, and the boss is slidably arranged inside the slide groove.

[0008] Preferably, the driving mechanism includes a fixed frame, a motor, a rotating rod, a driving gear and a driven gear, the fixed frame is fixedly connected to the lower surface of the servo frame, the motor is fixedly connected to the lower surface of the fixed frame, the rotating rod is rotatably connected to the inside of the fixed frame, the lower end of the rotating rod passes through the lower surface of the fixed frame and is fixedly connected to the output end of the motor, the driving gear is fixedly sleeved on the rod wall of the rotating rod, the lower end of the screw rod passes through the lower surface of the servo frame and extends to the inside of the fixed frame, and the driven gear is fixedly sleeved on the rod wall at the lower end of the screw rod and meshes with the driving gear.

[0009] Preferably, the cross-sections of the boss and the slide groove are both stepped.

[0010] Preferably, the outer surface of the boss is in contact with the side wall of the chute.

[0011] Preferably, the size of the driving gear is smaller than that of the driven gear.

[0012] Preferably, an internal threaded hole matching the screw rod is provided inside the slider.

[0013] In the above technical solution, the technical effects and advantages provided by this utility are:

[0014] 1. In this utility model, the boss slides inside the slide groove, so that the slider can only move parallel to the slide rail following the boss, thereby improving the stability of the slider and preventing it from rotating, which in turn affects the fixation of the wing shaft.

[0015] 2. In this utility model, by starting the motor, the rotating rod rotates, and then the driving gear can be driven to rotate, and then the driving gear can drive the driven gear to rotate, and then the screw rod can be rotated. At the same time, because the driving gear is smaller than the driven gear, it can play a deceleration role, thereby reducing the rotation speed of the screw rod, making the movement of the slider more precise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in this utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the structure of this utility;

[0018] Figure 2 Practical Figure 1 sectional view of

[0019] Figure 3 Practical Figure 1 Top view of the middle rail and slider.

[0020] Description of reference numerals:

[0021] 1. Servo frame; 2. Screw; 3. Slider; 4. Wing shaft; 5. Slide rail; 6. Boss; 7. Fixed frame; 8. Motor; 9. Rotating rod; 10. Driving gear; 11. Driven gear. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] This practical embodiment discloses a structure for improving the control accuracy of a steering gear.

[0024] This utility provides Figure 1-3 A structure for improving the control accuracy of a servo is shown, which includes a servo frame 1, a screw rod 2 being rotatably connected between the servo frames 1, a slider 3 being threadedly sleeved on the rod wall of the screw rod 2, a wing shaft 4 being fixedly connected to one side of the slider 3, a driving mechanism being provided on the lower surface of the servo frame 1, the screw rod 2 being rotated by the driving mechanism, a slide rail 5 being fixedly connected between the servo frames 1, a slide groove being provided on one side of the slide rail 5, a boss 6 being fixedly connected to one side of the slider 3, and the boss 6 being slidably arranged inside the slide groove.

[0025] The boss 6 slides inside the slide groove, so that the slider 3 can only move parallel to the slide rail 5 following the boss 6, thereby improving the stability of the slider 3 and preventing it from rotating, which in turn affects the fixation of the wing shaft 4.

[0026] In order to make the screw 2 rotate, Figure 1-2 As shown, the driving mechanism includes a fixed frame 7, a motor 8, a rotating rod 9, a driving gear 10 and a driven gear 11. The fixed frame 7 is fixedly connected to the lower surface of the servo frame 1, the motor 8 is fixedly connected to the lower surface of the fixed frame 7, the rotating rod 9 is rotatably connected to the inside of the fixed frame 7, the lower end of the rotating rod 9 passes through the lower surface of the fixed frame 7 and is fixedly connected to the output end of the motor 8, the driving gear 10 is fixedly sleeved on the rod wall of the rotating rod 9, the lower end of the screw rod 2 passes through the lower surface of the servo frame 1 and extends to the inside of the fixed frame 7, and the driven gear 11 is fixedly sleeved on the rod wall at the lower end of the screw rod 2 and meshes with the driving gear 10.

[0027] Start the motor 8 to rotate the rotating rod 9, which can then drive the driving gear 10 to rotate, and then the driving gear 10 can drive the driven gear 11 to rotate, and then the screw rod 2 can be rotated.

[0028] In order to prevent the boss 6 from falling out of the chute, Figure 3 As shown, the cross sections of the boss 6 and the chute are both stepped, and the outer surface of the boss 6 fits in with the side wall of the chute.

[0029] Because the cross sections of the boss 6 and the chute are both stepped, the boss 6 can play a role of limiting and prevent it from falling off from the inside of the chute.

[0030] In order to reduce the speed of the screw 2, as Figure 2 As shown, the size of the driving gear 10 is smaller than that of the driven gear 11 .

[0031] Because the driving gear 10 is smaller than the driven gear 11 , it can play a role of deceleration, thereby reducing the rotation speed of the screw rod 2 and making the movement of the slider 3 more precise.

[0032] In order to make the slider 3 movable, Figure 1-2 As shown, an internal threaded hole matching the screw rod 2 is provided inside the slider 3 .

[0033] The internal threaded hole allows the slider 3 to move up and down when the screw rod 2 rotates.

[0034] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of this invention.

Claims

1. A structure for improving the control accuracy of a steering gear, comprising a steering gear frame (1), characterized in that: A screw rod (2) is rotatably connected between the servo frames (1), a slider (3) is threadedly sleeved on the rod wall of the screw rod (2), a wing shaft (4) is fixedly connected to one side of the slider (3), a driving mechanism is provided on the lower surface of the servo frame (1), the screw rod (2) is rotated by the driving mechanism, a slide rail (5) is fixedly connected between the servo frames (1), a slide groove is provided on one side of the slide rail (5), a boss (6) is fixedly connected to one side of the slider (3), and the boss (6) is slidably arranged inside the slide groove.

2. The structure for improving steering gear control accuracy according to claim 1, characterized in that: The driving mechanism comprises a fixed frame (7), a motor (8), a rotating rod (9), a driving gear (10) and a driven gear (11), wherein the fixed frame (7) is fixedly connected to the lower surface of the steering gear frame (1), the motor (8) is fixedly connected to the lower surface of the fixed frame (7), the rotating rod (9) is rotatably connected to the interior of the fixed frame (7), the lower end of the rotating rod (9) passes through the lower surface of the fixed frame (7) and is fixedly connected to the output end of the motor (8), the driving gear (10) is fixedly sleeved on the rod wall of the rotating rod (9), the lower end of the screw rod (2) passes through the lower surface of the steering gear frame (1) and extends to the interior of the fixed frame (7), and the driven gear (11) is fixedly sleeved on the rod wall of the lower end of the screw rod (2) and meshes with the driving gear (10).

3. The structure for improving steering gear control accuracy according to claim 1, characterized in that: The cross sections of the boss (6) and the chute are both stepped.

4. The structure for improving steering gear control accuracy according to claim 1, characterized in that: The outer surface of the boss (6) is in contact with the side wall of the chute.

5. The structure for improving steering gear control accuracy according to claim 2, characterized in that: The size of the driving gear (10) is smaller than the size of the driven gear (11).

6. The structure for improving steering gear control accuracy according to claim 1, characterized in that: An internal threaded hole matching the screw rod (2) is provided inside the slider (3).

Images