CN114408223B - A fast return buffer device for power adjustment mechanism - Google Patents

Abstract

The invention discloses a rapid homing buffer device of a power adjusting mechanism, which comprises a spring cylinder cover plate, a zero-position locknut, a zero-position adjusting nut-air resistor, a boosting spring, a piston, a buffer spring, a limiting ring, a spring adjusting nut, a homing spring, a rack and a spring cylinder, wherein the spring cylinder cover plate is arranged on the upper surface of the spring cylinder cover plate; the rack is meshed with the gear of the load release mechanism, the reset spring is sleeved on the rack, a spring limiting groove on the spring adjusting nut is opposite to the reset spring, the spring adjusting nut is fixedly connected to the rack, and the spring barrel is welded on the main shell; the buffer spring and the boosting spring are arranged in the mounting groove of the zero position adjusting nut-air resistor, the buffer spring and the boosting spring are simultaneously compressed through the piston, and the central hole of the limiting ring penetrates through the rack and is fixedly connected to the zero position adjusting nut-air resistor; the zero position adjusting nut is in threaded connection with the air resistance in the spring cylinder, the zero position locknut is in threaded connection with the spring cylinder, and the spring cylinder cover plate is welded on the end face of the spring cylinder; the device has high self-adaptive performance and can realize quick buffering.

Description

A fast return buffer device for power adjustment mechanism

technical field

The invention belongs to the technical field of space power, and in particular relates to a fast return buffer device of a power adjustment mechanism.

Background technique

Space reactors can provide stable power for manned deep space flights and other deep space exploration missions that require high power. In deep space exploration, compared with solar power sources that are limited by factors such as the deployment of sails and the position of the sun, the nuclear power provided by space reactors is more powerful. Has a technical advantage. Because the space reactor needs to output stable voltage and current, it is extremely important to control the reactivity of the reactor. In order not to cause space nuclear pollution after the reactor fails, it is necessary to stop the reactor urgently in an accident state, and the shutdown has a large impact load , so it is necessary to design a buffer device that can quickly buffer large load impacts and has high adaptive performance to load changes.

Contents of the invention

In view of this, the present invention provides a fast return buffer device for the power adjustment mechanism, so that the power adjustment mechanism can buffer a large load impact within a specified time when the power adjustment mechanism returns quickly, and has high adaptive performance for load changes.

Realize the technical scheme of the present invention as follows:

A fast return buffer device for a power adjustment mechanism, including a spring cylinder cover plate, a zero lock nut, a zero adjustment nut-air resistance, a booster spring, a piston, a buffer spring, a limit ring, a spring adjustment nut, a return Springs, racks and spring barrels;

The zero adjustment nut-air resistance is provided with a coaxial booster spring installation groove and a buffer spring installation groove; the spring adjustment nut is processed with a spring limit groove on one end surface;

The rack meshes with the gear on the load release mechanism, the return spring is sleeved on the rack, the spring limit groove on the spring adjustment nut faces the return spring, the spring adjustment nut is fixedly connected to the rack, and the spring tube is welded on On the main housing; the buffer spring and the booster spring are installed in the installation groove corresponding to the zero adjustment nut-air resistance, the buffer spring and the booster spring are pressed together by the piston, and the center hole of the limit ring passes through the rack Finally, it is fixedly connected to the zero adjustment nut-air resistance; the zero adjustment nut-air resistance is threaded in the spring barrel through the external thread, and the zero locknut is threaded in the spring barrel through the external thread, which is used to connect with the zero Position adjustment nut-air resistance is used to prevent loosening, and the cover plate of the spring barrel is welded on the end face of the spring barrel.

Furthermore, the outer circumferential surface of the spring adjustment nut is processed with multiple rings of annular grooves, which can effectively improve the buffer air resistance of the mechanism.

Further, the spring adjusting nut is threadedly connected to the rack through an internal thread.

Further, the zero adjustment nut-air resistance rear end processing The round hole can effectively improve the adaptive performance of mechanism buffering.

Furthermore, the cover plate of the spring cylinder and the spring cylinder adopt a seam design, which can improve the airtightness of the mechanism after welding.

Beneficial effect:

(1) The device of the present invention can realize mechanism buffering of large load impact;

(2) The device of the present invention can realize the anti-loosening function of the mechanism carrying large impact;

(3) The device of the present invention is designed with the function of adjustable mechanism spring force and mechanism homing time;

(4) The spring tube cover plate and the spring tube of the present invention adopt a seam design, which can improve the airtightness of the device after the welding is completed;

(5) The spring adjusting nut of the present invention is designed with a multi-circle annular groove, which can effectively improve the buffer air resistance of the mechanism;

(6) The present invention is designed on the zero adjustment nut-air resistance The round hole can effectively improve the adaptive performance of mechanism buffering.

Description of drawings

Fig. 1 is a schematic structural diagram of the fast return buffer device of the power adjustment mechanism of the present invention.

Fig. 2 is a part diagram of the limiting ring of the fast return buffer device of the power adjustment mechanism of the present invention; (a) is a sectional view, and (b) is a front view.

Fig. 3 is a drawing of the zero position adjustment nut of the quick return buffer device of the power adjustment mechanism of the present invention - an air resistance part; (a) is a front view, (b) is a sectional view, and (c) is a view along the direction A.

Fig. 4 is a diagram of the piston parts of the quick return buffer device of the power adjustment mechanism of the present invention.

Among them, 1-spring barrel cover plate, 2-zero position locknut, 3-zero position adjustment nut-air resistance, 4-boosting spring, 5-piston, 6-buffer spring, 7-limiting ring, 8- Spring adjustment nut, 9-return spring, 10-rack, 11-spring barrel.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and examples.

The present invention provides a fast return buffer device for a power adjustment mechanism, as shown in Fig. 5. Buffer spring 6, limit ring 7, spring adjustment nut 8, return spring 9, rack 10, spring barrel 11.

As shown in Figure 1-Figure 4, the buffer spring and the booster spring are installed on the zero adjustment nut-air resistance, and are pressed tightly by the piston. After the limit ring passes through the rack, it is installed on the zero adjustment through the screw Nut-air resistance, to ensure that the piston slides smoothly in the zero position adjustment nut-air resistance; install the rack on the main housing of the mechanism, and mesh with the gear in the mechanism, the return spring is sleeved on the rack, and use The spring adjustment nut (the side of the spring adjustment nut processed with the spring limit groove is facing the return spring, and is installed on the rack through the internal thread) compresses the return spring; the spring tube is installed on the main body of the mechanism, Install the zero adjustment nut-air resistance assembly inside the spring barrel through threaded connection, and at the same time install the zero lock nut in the spring barrel through thread connection, and use special tooling to install the zero adjustment nut-air resistance and zero lock The nuts are tightened to form the anti-loosening effect of the double nuts; finally, the spring barrel cover plate is installed on the spring barrel through the seam and welded and sealed.

The working principle of the device of the present invention is:

The initial position of the mechanism is shown in Figure 1. When the mechanism receives the drive control command, the gear in the mechanism drives the rack 10 to move in a straight line. At this time, under the action of the spring adjustment nut 8, the return spring 9 is compressed to store energy, and the piston at the same time 5 slowly slides to the inner end surface of the limit ring 7 under the action of the buffer spring 6 and the booster spring 4; when the mechanism returns quickly, the rack 10 and the spring adjustment nut 8 return quickly under the action of the return spring 9, When the end face of the rack 10 starts to compress the piston 5, the booster spring 4 and the buffer spring 6 are compressed and start to store energy. At the same time, the gas in the cavity formed by the zero adjustment nut-air resistance 3 and the piston 5 is extremely compressed, and Through the zero adjustment nut - air resistance 3 upper The round hole is discharged into the cavity formed by the spring tube cover plate 1 and the zero position locknut 2. At this time, with the attenuation of the impact force, the The gas is discharged into the cavity formed by the zero adjustment nut-air resistance 3 and the piston 5; until the spring adjustment nut 8 contacts the end surface of the limit ring 7, it is ensured that the mechanism can buffer the large load (1000N) within the specified time (0.4S). ) impact, and has high adaptive performance to load changes.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (5)

1. A fast return buffer device for a power adjustment mechanism, characterized in that it includes a spring cylinder cover plate, a zero lock nut, a zero adjustment nut-air resistance, a booster spring, a piston, a buffer spring, a limit ring, Spring adjustment nut, return spring, rack and spring barrel; The zero adjustment nut-air resistance is provided with a coaxial booster spring installation groove and a buffer spring installation groove; the spring adjustment nut is processed with a spring limit groove on one end surface; The rack meshes with the gear on the load release mechanism, the return spring is sleeved on the rack, the spring limit groove on the spring adjustment nut faces the return spring, the spring adjustment nut is fixedly connected to the rack, and the spring tube is welded on On the main housing; the buffer spring and the booster spring are installed in the installation groove corresponding to the zero adjustment nut-air resistance, the buffer spring and the booster spring are pressed together by the piston, and the center hole of the limit ring passes through the rack Finally, it is fixedly connected to the zero adjustment nut-air resistance; the zero adjustment nut-air resistance is threaded in the spring barrel through the external thread, and the zero locknut is threaded in the spring barrel through the external thread, which is used to connect with the zero Position adjustment nut-air resistance is used to prevent loosening, and the cover plate of the spring barrel is welded on the end face of the spring barrel. 2. A fast return buffer device for a power adjustment mechanism according to claim 1, characterized in that, the outer circumferential surface of the spring adjustment nut is processed with multiple circles of annular grooves. 3. A fast return buffer device for a power adjustment mechanism according to claim 1, wherein the spring adjustment nut is threadedly connected to the rack through an internal thread. 4. A fast return buffer device for a power adjustment mechanism according to claim 1, characterized in that the zero adjustment nut-air resistance rear end is processed round hole. 5 . The fast return buffer device of the power adjustment mechanism according to claim 1 , wherein the cover plate of the spring cylinder and the spring cylinder adopt a slit design. 6 .