CN215719002U

CN215719002U - Pressure-reducing semi-nylon camshaft

Info

Publication number: CN215719002U
Application number: CN202121867218.9U
Authority: CN
Inventors: 蔡族长
Original assignee: Yuhuan Jieyu Machinery Manufacturing Co ltd
Current assignee: Taizhou Jieyu Machinery Manufacturing Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-02-01
Anticipated expiration: 2031-08-10

Abstract

The utility model discloses a decompression semi-nylon camshaft, and aims to provide a camshaft with better decompression effect and wear resistance, which comprises a main shaft and a plurality of cams, wherein the cams are fixedly arranged on the main shaft, the cams respectively comprise a sliding block, a first sliding chute and a second sliding chute, and the first sliding chute is arranged at the top end of each cam; the bottom of the first sliding chute is provided with a second sliding chute towards the axis direction of the main shaft; the sliding block is embedded with the first sliding groove, the bottom of the sliding block is provided with a sliding rod, and the sliding rod is connected with the second sliding groove in a sliding manner; the bottom of the sliding rod is fixedly connected with a first magnetic attraction block, and the bottom of the second sliding chute is fixedly connected with a second magnetic attraction block. The utility model is applicable to the field of camshafts.

Description

Pressure-reducing semi-nylon camshaft

Technical Field

The utility model belongs to the field of camshafts, and particularly relates to a pressure-reducing semi-nylon camshaft.

Background

In the patent with publication number CN210858831U and application date of 2019, 9 and 13, a camshaft with an automatic pressure reducer is disclosed, by arranging parts such as a slider and a spring in the cam, the camshaft has the effect of automatically adjusting the pressure of the camshaft along with the speed of the rotating speed in a matching manner, and the fact is that the slider centrifugally elongates the spring to slide out when the camshaft rotates, and the pressure reduction effect is realized due to conservation of angular momentum, so that the spring always has elongation under the action of the slider in the rotation process of the camshaft, namely, the spring always has disturbance in the normal working process, and the influence on the normal work of a rotating device comprises meaningless energy consumption and the reduction of the working efficiency.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a wear-resistant camshaft with better decompression effect.

In order to achieve the purpose, the utility model provides the following technical scheme: a decompression semi-nylon camshaft comprises a main shaft and a plurality of cams, wherein the cams are fixedly arranged on the main shaft, each cam comprises a sliding block, a first sliding chute and a second sliding chute, and the first sliding chutes are formed in the top ends of the cams; the bottom of the first sliding chute is provided with a second sliding chute towards the axis direction of the main shaft; the sliding block is embedded with the first sliding groove, the bottom of the sliding block is provided with a sliding rod, and the sliding rod is connected with the second sliding groove in a sliding manner; the bottom of the sliding rod is fixedly connected with a first magnetic attraction block, and the bottom of the second sliding chute is fixedly connected with a second magnetic attraction block.

The utility model is further configured to: and a third sliding groove is formed in the inner walls of the first sliding groove and the second sliding groove, a limiting block is arranged on the sliding rod, and the limiting block is connected with the third sliding groove in a sliding manner.

The utility model is further configured to: the limiting block further comprises a groove, and the groove is formed in the face, attached to the bottom of the third sliding groove, of the limiting block.

The utility model is further configured to: the slider also comprises an oil filling hole, and the oil filling hole is communicated with the groove.

The utility model is further configured to: the main shaft is also provided with a gear disc, the gear disc comprises an iron core and a nylon gear disc, and the nylon gear disc is fixedly connected with the iron core; the gear disc is arranged at one end of the main shaft.

By adopting the technical scheme, when the camshaft normally operates, the first sliding block and the second sliding block are attracted and fixed at the bottom in detail; when the rotating speed of the camshaft is too high to exceed the rated speed, the centrifugal force of the sliding block is larger than the magnetic attraction force, the sliding block and the sliding rod slide out along the first sliding groove and the second sliding groove, and the effect of reducing the pressure of the camshaft is achieved due to conservation of angular momentum; when the rotation speed of the camshaft returns to normal, the first magnetic attraction block and the second magnetic attraction block attract each other to enable the sliding block to return to the original position.

Through the cooperation of piece is inhaled to first magnetism and second magnetism, realize only that the slider is thrown away for its decompression when the camshaft rotational speed transfinites, and the slider can not disturb the normal operating that influences the camshaft when normal operating for the decompression mechanism of camshaft is more reasonable, the operation is more steady.

When the sliding block slides, the limiting block is driven to slide in the third sliding groove and limited by the limiting groove, so that the sliding block is prevented from being separated.

The sliding condition of the limiting block in the third sliding groove is optimized by balancing the internal air pressure and the external air pressure through the groove.

The surface that wants the contact can be provided lubricated for stopper and third spout through the cooperation of oil filler point and recess, optimizes the slip condition.

The torque borne by the gear disc as one of the connecting parts on the camshaft is relatively small, so that the nylon fluted disc can reduce the cost, improve the wear resistance and prolong the service life.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an internal schematic view of the cam of the present invention;

FIG. 3 is a side schematic view of the cam of the present invention;

in the drawings: 1. a main shaft; 2. a cam; 3. a first chute; 4. a second chute; 5. a third chute; 6. A slider; 7. a slide bar; 8. a first magnetic attraction block; 9. a second magnetic attraction block; 10. a limiting block; 11. a groove; 13. An iron core; 14. nylon fluted disc.

Detailed Description

The utility model is further described in the following with reference to fig. 1 to 3 in a specific embodiment:

the first embodiment is as follows:

a decompression semi-nylon camshaft comprises a main shaft 1 and a plurality of cams 2, wherein the cams 2 are fixedly arranged on the main shaft 1, each cam 2 comprises a sliding block 6, a first sliding chute 3 and a second sliding chute 4, and the first sliding chutes 3 are formed in the top ends of the cams 2; the bottom of the first sliding chute 3 is provided with a second sliding chute 4 towards the axis direction of the main shaft 1; the sliding block 6 is embedded with the first sliding chute 3, the bottom of the sliding block 6 is provided with a sliding rod 7, and the sliding rod 7 is connected with the second sliding chute 4 in a sliding manner; the bottom of the sliding rod 7 is fixedly connected with a first magnetic suction block 8, and the bottom of the second chute 4 is fixedly connected with a second magnetic suction block 9.

In the embodiment, when the camshaft normally operates, the first slide block 6 and the second slide block 6 are attracted and fixed at the bottom; when the rotating speed of the cam shaft is too high to exceed the rated speed, the centrifugal force of the sliding block 6 is larger than the magnetic attraction force, the sliding block 6 and the sliding rod 7 slide out along the first sliding groove 3 and the second sliding groove 4, and the effect of reducing the pressure of the cam shaft 2 is achieved due to conservation of angular momentum; when the rotation speed of the camshaft returns to normal, the first magnetic block 8 and the second magnetic block 9 attract each other to enable the sliding block 6 to return to the original position. Through the cooperation of first magnetism piece 8 and second magnetism piece 9 of inhaling, realize only that slider 6 is thrown away for its decompression when 2 axles of cam rotational speed transfinites, and slider 6 can not disturb the normal operating that influences the camshaft when normal operating for the decompression mechanism of camshaft is more reasonable, the operation is more steady.

Example two:

on the basis of the first embodiment, the third sliding grooves 5 are formed in the inner walls of the first sliding grooves 3 and the second sliding grooves 4, the limiting blocks 10 are arranged on the sliding rods 7, and the limiting blocks 10 are connected with the third sliding grooves 5 in a sliding mode.

In this embodiment, when the sliding block 6 slides, the limiting block 10 is driven to slide in the third sliding slot 5 and is limited by the limiting slot, so as to prevent the sliding block 6 from falling off.

Example three:

on the basis of the second embodiment, the limiting block 10 further comprises a groove 11, and the groove 11 is formed in the surface, attached to the bottom of the third sliding groove 5, of the limiting block 10.

Further, the slide block 6 further comprises an oil filling hole which is communicated with the groove 11.

In this embodiment, the sliding condition of the stopper 10 in the third sliding groove 5 is optimized by balancing the internal and external air pressures through the groove 11.

The lubricating can be provided for the contact surface between the limiting block 10 and the third sliding groove 5 through the matching of the oil injection hole and the groove 11, and the sliding condition is optimized.

Example four:

on the basis of the embodiment, the main shaft 1 is also provided with a gear disc, the gear disc comprises an iron core 13 and a nylon gear disc 14, and the nylon gear disc 14 is fixedly connected with the iron core 13; the gear disc is arranged at one end of the main shaft 1.

In this embodiment, the torque applied to the gear plate as one of the connecting parts on the camshaft is relatively small, so that the nylon toothed plate 14 can reduce the cost, improve the wear resistance and prolong the service life.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides a half nylon camshaft of decompression, includes main shaft (1) and a plurality of cam (2), cam (2) are fixed to be set up on main shaft (1), its characterized in that: a plurality of cams (2) all comprise

The first sliding chute (3), the first sliding chute (3) is arranged at the top end of the cam (2); a second sliding chute (4) is arranged at the bottom of the first sliding chute (3) towards the axis direction of the main shaft (1);

the sliding block (6), the sliding block (6) is embedded with the first sliding chute (3), a sliding rod (7) is arranged at the bottom of the sliding block (6), and the sliding rod (7) is connected with the second sliding chute (4) in a sliding manner;

the bottom of the sliding rod (7) is fixedly connected with a first magnetic suction block (8), and the bottom of the second sliding chute (4) is fixedly connected with a second magnetic suction block (9).

2. The decompression semi-nylon camshaft according to claim 1, wherein: and a third sliding groove (5) is formed in the inner walls of the first sliding groove (3) and the second sliding groove (4), a limiting block (10) is arranged on the sliding rod (7), and the limiting block (10) is connected with the third sliding groove (5) in a sliding manner.

3. A reduced pressure semi-nylon camshaft as claimed in claim 2, wherein: the limiting block (10) is further provided with

The groove (11) is arranged on the surface of the limiting block (10) attached to the bottom of the third sliding groove (5).

4. A reduced pressure semi-nylon camshaft as claimed in claim 3, wherein: the sliding block (6) is also provided with

The oil filler point, oil filler point and recess UNICOM.

5. The decompression semi-nylon camshaft according to claim 4, wherein: the main shaft (1) is also provided with

The gear disc comprises an iron core (13) and a nylon fluted disc (14), and the nylon fluted disc (14) is fixedly connected with the iron core (13); the gear disc is arranged at one end of the main shaft (1).