A cam integrated mechanism for a gear plate of a steering device

Abstract

The application discloses a kind of operating device tooth plate cam integration mechanism, including base, mounting bracket and body, base is fixed on operating device shell, mounting bracket is fixedly arranged on base, the body is integrally formed by left sector tooth plate and right cam, body is installed on mounting bracket by rotating shaft, photoelectric encoder is installed on mounting bracket, and the gear on photoelectric encoder output shaft is engaged with the tooth of sector tooth plate sector face axial direction;The cam is connected with return mechanism.The application cancels the process of matching drilling riveting pin, adopts sector tooth plate, wing type cam integration design processing, eliminates the risk of part crack caused by matching drilling in long-term working process of transmission mechanism, eliminates the hidden danger of pin drop, and the overall structure is compact, high temperature, low temperature, damp heat, vibration, impact and other performances fully meet the military standard requirements, effectively improve the reliability of transmission mechanism.

Description

Technical Field

[0001] This invention relates to an integrated gear plate and cam mechanism for a control device. Background Technology

[0002] An armored vehicle control device is an electrical product capable of controlling the horizontal and vertical movements of the gun, and it features a control torque proportional to the output control signal. Its working principle primarily involves rotating the control handle to rotate the horizontal and vertical axes, which in turn drives gears on the fixed shafts to rotate potentiometers or photoelectric encoders, outputting a parabolic control signal. Generally, the initial position of the control panel outputs zero, and the turret remains stationary. Operating the control handle allows the main body to rotate left or right; in this state, the horizontal potentiometer or photoelectric encoder rotates, and the turret rotates in the corresponding direction. The turret rotation speed is proportional to the rotation angle of the control device; this is called the horizontal control output state. Operating the control handle to rotate the pitch control outputs the pitch potentiometer or photoelectric encoder, operating on the same principle as the horizontal direction; this is called the pitch control output state.

[0003] Traditional control devices require the assembly and processing of a sector toothed plate and a cam, which are riveted together with pins. The original assembly and riveting process involves pre-positioning the sector toothed plate and the cam on the drive shaft, installing a potentiometer to determine the zero position, and then using screws to fasten the sector toothed plate and the cam to the drive shaft. Then, the potentiometer and drive shaft components are disassembled, and the sector toothed plate, the cam, and the drive shaft are fixed with pins according to the pre-positioned angle. The process is complicated, and the transmission mechanism needs to work for a long time. The drilling may cause cracks in the parts, and there is also the risk of the pins falling off. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an integrated toothed cam mechanism for a control device that is simple in structure, highly reliable, and highly adaptable to the environment.

[0005] The technical solution of this invention to solve the above-mentioned technical problems is: an integrated toothed plate and cam mechanism for a control device, comprising a base, a mounting frame, and a body. The base is fixed on the housing of the control device, and the mounting frame is fixedly mounted on the base. The body is integrally formed by a sector-shaped toothed plate on the left and a cam on the right. The body is mounted on the mounting frame via a rotating shaft. A photoelectric encoder is mounted on the mounting frame, and the gear on the output shaft of the photoelectric encoder meshes with the axial teeth of the sector-shaped toothed plate. The sector-shaped toothed plate is used to drive the photoelectric encoder to rotate and output different position grating signals. The cam is connected to a return mechanism, which is used to provide the operator with different control angle tactile feedback signals and mechanism return.

[0006] The aforementioned integrated gear plate cam mechanism of the operating device has an annular protrusion in the middle of the main body. One end of the rotating shaft is inserted into the annular protrusion and fastened with screws. The other end of the rotating shaft is fixed to the inner ring of the first bearing, and the outer ring of the first bearing is fixed on the mounting bracket.

[0007] In the aforementioned integrated gear plate and cam mechanism of the operating device, an adjustment pad is provided between the photoelectric encoder and the mounting bracket to adjust the meshing clearance between the photoelectric encoder gear and the sector gear plate.

[0008] The aforementioned integrated gear plate cam mechanism of the operating device includes a return mechanism comprising a connecting rod, a pin, and a spring. The pin is vertically fixed on the base, one end of the connecting rod is connected to the pin and can rotate around the pin, the other end of the connecting rod is fixedly connected to one end of the spring, and the other end of the spring is fixed to a column on the floor.

[0009] The aforementioned control device has an integrated toothed cam mechanism, wherein the cam is wing-shaped with a bayonet in the middle, and a second bearing is provided in the middle of the connecting rod, with the bayonet in the middle of the cam engaging with the second bearing.

[0010] The beneficial effects of this invention are as follows: 1. This invention eliminates the process of drilling and riveting pins, and adopts an integrated design and processing of fan-shaped toothed plate and airfoil-type cam, which eliminates the risk of parts cracking caused by drilling during long-term operation of the transmission mechanism, eliminates the hidden danger of pin falling off, and has a compact overall structure. Its performance in high temperature, low temperature, damp heat, vibration and impact fully meets the requirements of military standards, effectively improving the reliability of the transmission mechanism.

[0011] 2. This invention solves the problem of pre-positioning angle adjustment, eliminates the drilling and pin fixing processes, significantly improves production efficiency, reduces manufacturing costs, and eliminates the dependence of the drilling and riveting process on employee skills in terms of assembly quality.

[0012] 3. This invention has good adaptability and can meet the application needs of the transmission mechanism of the control device of the fire control system of special vehicles, and has broad application prospects. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention.

[0014] Figure 2 for Figure 1 A schematic diagram of the structure of the main body.

[0015] Figure 3 This is a schematic diagram of the working state of the present invention. Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1 , Figure 2 As shown, an integrated toothed cam mechanism for a control device includes a base 1, a mounting bracket 2, and a body 3. The base 1 is fixed to the housing 4 of the control device, and the mounting bracket 2 is fixedly mounted on the base 1. The body 3 is integrally formed by a sector-shaped toothed plate 5 on the left and a cam 6 on the right. The body 3 is mounted on the mounting bracket 2 via a rotating shaft 7. A photoelectric encoder 8 is mounted on the mounting bracket 2, and the gear on the output shaft of the photoelectric encoder 8 meshes with the axial teeth of the sector-shaped toothed plate 5. The sector-shaped toothed plate 5 is used to drive the photoelectric encoder 8 to rotate and output different position grating signals. The cam 6 is connected to a return mechanism, which is used to provide the operator with different control angle tactile feedback signals and mechanism return.

[0018] The main body 3 has an annular protrusion 9 in the middle. One end of the rotating shaft 7 is inserted into the annular protrusion 9 and fastened with screws. The other end of the rotating shaft 7 is fixed to the inner ring of the first bearing, and the outer ring of the first bearing is fixed on the mounting bracket 2.

[0019] An adjustment shim 10 is provided between the photoelectric encoder 8 and the mounting bracket 2 to adjust the meshing clearance between the gear of the photoelectric encoder 8 and the sector tooth plate 5, so as to ensure the meshing radius between the sector tooth plate 5 and the gear, thereby ensuring reliable transmission.

[0020] The return mechanism includes a connecting rod 11, a pin, and a spring 12. The pin is vertically fixed on the base 1. One end of the connecting rod 11 is connected to the pin and can rotate around the pin. The other end of the connecting rod 11 is fixedly connected to one end of the spring 12. The other end of the spring 12 is fixed to the upright of the floor.

[0021] The cam 6 is wing-shaped with a bayonet in the middle. The connecting rod 11 has a second bearing in the middle, and the bayonet in the middle of the cam 6 fits into the second bearing.

[0022] The wing-shaped cam 6, via connecting rod 11 and spring 12, ensures that the control device provides different operating feel to the operator at different rotation angles. The larger the operating rotation angle, the greater the required operating force, the larger the signal value output by photoelectric encoder 8, and the faster the fire control system adjusts the gun. Furthermore, when the operator releases the control handle, spring 12 naturally contracts, driving the control device back to the zero position with no signal output. This replaces the original cumbersome and complex process of pre-positioning the sector toothed plate 5 and cam 6 on the drive shaft, installing a potentiometer to determine the zero position, using screws to fasten cam 6 and sector toothed plate 5 to the rotating shaft 7, disassembling the potentiometer and rotating shaft 7, and then fixing sector toothed plate 5, cam 6, and rotating shaft 7 with drill pins according to the pre-positioned angle.

[0023] like Figure 3As shown, the control device housing 4 is mounted on the control device base 17. An integrated toothed cam mechanism 13 for pitch control and an integrated toothed cam mechanism 14 for horizontal control are provided for pitch and horizontal operation, respectively. 15 is a pitch photoelectric encoder, and 16 is a horizontal photoelectric encoder. The integrated toothed cam mechanism 6 relies on the photoelectric encoder 8, which has a memory function. The zero position characteristics of the photoelectric encoder 8 can be defined by software. The fan-shaped toothed plate 5 and the wing-shaped cam 6 are calculated through three-dimensional structural simulation, and their radial angular relationship and axial position relationship on the rotation axis 7 are set. After meshing with the gears of the photoelectric encoder 8, the left-right and pitch meshing rotation clearance and rotation working angle range are guaranteed. The bayonet at the center of the wing-shaped cam 6 is engaged with the second bearing, and the product transmission mechanism is assembled. At this time, with the control device in a static state without external force, the zero position of the photoelectric encoder 8 is collected and determined through the control device software, thus completing the overall setup of the control device.

Claims

1. A toothed cam integrated mechanism for a control device of a fire control system for special vehicles, comprising a base, a mounting bracket, and a body, wherein the base is fixed to the housing of the control device, and the mounting bracket is fixedly mounted on the base, characterized in that: The main body is integrally formed from a sector-shaped toothed plate on the left and a cam on the right. The main body is mounted on a mounting frame via a rotating shaft. The photoelectric encoder is mounted on the mounting frame, and the gear on the output shaft of the photoelectric encoder meshes with the axial teeth of the sector-shaped toothed plate. The sector-shaped toothed plate is used to drive the photoelectric encoder to rotate and output different position grating signals. The cam is connected to a return mechanism, which is used to provide the operator with tactile feedback signals for different operating angles and to return the mechanism to its original position. The return mechanism includes a connecting rod, a pin, and a spring. The pin is vertically fixed on the base. One end of the connecting rod is connected to the pin and can rotate around the pin. The other end of the connecting rod is fixedly connected to one end of the spring, and the other end of the spring is fixed on the column of the base. The cam is wing-shaped with a bayonet in the middle. A second bearing is provided in the middle of the connecting rod, and the bayonet in the middle of the cam fits into the second bearing.

2. The integrated gear plate and cam mechanism of the special vehicle fire control system control device according to claim 1, characterized in that: The main body has an annular protrusion in the middle. One end of the rotating shaft is inserted into the annular protrusion and fastened with screws. The other end of the rotating shaft is fixed to the inner ring of the first bearing, and the outer ring of the first bearing is fixed on the mounting bracket.

3. The integrated gear plate and cam mechanism of the special vehicle fire control system control device according to claim 1, characterized in that: An adjustment pad is provided between the photoelectric encoder and the mounting bracket to adjust the meshing clearance between the photoelectric encoder gear and the sector tooth plate.

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